10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

(Mark One)

x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended December 31, 2023

OR

o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from                     to

Commission file number: 814-00704

GLADSTONE INVESTMENT CORPORATION

(Exact name of registrant as specified in its charter)

Delaware	83-0423116
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
1521 WESTBRANCH DRIVE, SUITE 100	22102
MCLEAN, VA	(Zip Code)
(Address of principal executive offices)

(703) 287-5800

(Registrant’s telephone number, including area code)

Not Applicable

(Former name, former address and former fiscal year,

if changed since last report)

Securities registered pursuant to Section 12(b) of the Act:

Title of Each Class	Trading Symbol(s)	Name of Each Exchange on Which Registered
Common Stock, $0.001 par value per share	GAIN	The Nasdaq Stock Market LLC
5.00% Notes due 2026	GAINN	The Nasdaq Stock Market LLC
4.875% Notes due 2028	GAINZ	The Nasdaq Stock Market LLC
8.00% Notes due 2028	GAINL	The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes x No o

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes x No o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer	o	Accelerated filer	o
Non-accelerated filer	x	Smaller reporting company	o
Emerging growth company	o

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes o No x

The number of shares of the issuer’s Common Stock, $0.001 par value per share, outstanding as of February 5, 2024 was 35,890,160.

GLADSTONE INVESTMENT CORPORATION

TABLE OF CONTENTS

PART I.	FINANCIAL INFORMATION:
Item 1.	Financial Statements (Unaudited)
	Consolidated Statements of Assets and Liabilities as of December 31, 2023 and March 31, 2023	2
	Consolidated Statements of Operations for the three and nine months ended December 31, 2023 and 2022	3
	Consolidated Statements of Changes in Net Assets for the three and nine months ended December 31, 2023 and 2022	4
	Consolidated Statements of Cash Flows for the nine months ended December 31, 2023 and 2022	5
	Consolidated Schedules of Investments as of December 31, 2023 and March 31, 2023	6
	Notes to Consolidated Financial Statements	16
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations
	Overview	45
	Results of Operations	49
	Liquidity and Capital Resources	60
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	68
Item 4.	Controls and Procedures	68
PART II.	OTHER INFORMATION:
Item 1.	Legal Proceedings	69
Item 1A.	Risk Factors	69
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	69
Item 3.	Defaults Upon Senior Securities	69
Item 4.	Mine Safety Disclosures	69
Item 5.	Other Information	69
Item 6.	Exhibits	70
SIGNATURE		71

PART I - FINANCIAL INFORMATION

ITEM 1. FINANCIAL STATEMENTS

GLADSTONE INVESTMENT CORPORATION

CONSOLIDATED STATEMENTS OF ASSETS AND LIABILITIES

(DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)

(UNAUDITED)

	December 31, 2023		March 31, 2023
ASSETS
Investments at fair value
Non-Control/Non-Affiliate investments (Cost of $545,299 and $429,305, respectively)	$	620,338	$	496,875
Affiliate investments (Cost of $291,146 and $276,055, respectively)	278,226		255,955
Control investments (Cost of $32,059 and $15,270, respectively)	4,244		713
Cash and cash equivalents	2,819		2,683
Restricted cash and cash equivalents	766		565
Interest receivable	6,575		3,038
Due from administrative agent	2,151		3,899
Deferred financing costs, net	1,069		431
Other assets, net	1,436		1,485
TOTAL ASSETS	$	917,624	$	765,644
LIABILITIES
Borrowings:
Line of credit at fair value (Cost of $82,600 and $35,200, respectively)	$	82,600	$	35,171
Notes payable, net	330,904		257,436
Total borrowings	413,504		292,607
Accounts payable and accrued expenses	1,596		786
Interest payable	3,545		2,309
Fees due to Adviser(A)	37,693		28,919
Fee due to Administrator(A)	575		716
Other liabilities	770		565
TOTAL LIABILITIES	$	457,683	$	325,902
Commitments and contingencies(B)
NET ASSETS	$	459,941	$	439,742
ANALYSIS OF NET ASSETS
Common stock, $0.001 par value per share, 100,000,000 shares authorized, 35,351,954 and 33,591,505 shares issued and outstanding, respectively	$	35	$	34
Capital in excess of par value	426,302		401,798
Cumulative net unrealized appreciation of investments	34,304		32,913
Cumulative net unrealized depreciation of other	—		29
Overdistributed net investment income	(16,666)		(5,527)
Accumulated net realized gain in excess of distributions	15,966		10,495
Total distributable earnings	33,604		37,910
TOTAL NET ASSETS	$	459,941	$	439,742
NET ASSET VALUE PER SHARE	$	13.01	$	13.09

(A)Refer to Note 4 — Related Party Transactions in the accompanying Notes to Consolidated Financial Statements for additional information.

(B)Refer to Note 9 — Commitments and Contingencies in the accompanying Notes to Consolidated Financial Statements for additional information.

THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED FINANCIAL STATEMENTS.

2

GLADSTONE INVESTMENT CORPORATION

CONSOLIDATED STATEMENTS OF OPERATIONS

(DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)

(UNAUDITED)

	Three Months Ended December 31,				Nine Months Ended December 31,
	2023		2022		2023		2022
INVESTMENT INCOME
Interest income
Non-Control/Non-Affiliate investments	$	15,237	$	11,357	$	41,353	$	30,007
Affiliate investments	6,351		4,689		18,285		12,985
Cash and cash equivalents	111		21		731		53
Total interest income	21,699		16,067		60,369		43,045
Dividend income
Non-Control/Non-Affiliate investments	—		—		—		4,829
Affiliate investments	—		4,466		1,907		6,018
Total dividend income	—		4,466		1,907		10,847
Success fee income
Non-Control/Non-Affiliate investments	1,382		1,061		1,382		7,794
Total success fee income	1,382		1,061		1,382		7,794
Total investment income	$	23,081	$	21,594	$	63,658	$	61,686
EXPENSES
Base management fee(A)	$	4,602	$	3,789	$	12,874	$	10,965
Loan servicing fee(A)	2,332		2,080		6,829		5,754
Incentive fee(A)	1,667		3,945		15,401		7,722
Administration fee(A)	450		410		1,306		1,352
Interest expense on borrowings	6,520		4,074		17,598		11,715
Amortization of deferred financing costs and discounts	589		452		1,708		1,350
Professional fees	411		331		1,030		1,564
Other general and administrative expenses	891		780		2,404		2,793
Expenses before credits from Adviser	17,462		15,861		59,150		43,215
Credits to base management fee – loan servicing fee(A)	(2,332)		(2,080)		(6,829)		(5,754)
Credits to fees from Adviser - other(A)	(1,793)		(756)		(5,117)		(3,131)
Total expenses, net of credits to fees	13,337		13,025		47,204		34,330
NET INVESTMENT INCOME	$	9,744	$	8,569	$	16,454	$	27,356
REALIZED AND UNREALIZED GAIN (LOSS)
Net realized gain (loss):
Non-Control/Non-Affiliate investments	$	43,459	$	473	$	43,748	$	7,504
Affiliate investments	2		3,371		275		3,371
Control investments	—		—		882		(277)
Total net realized gain	43,461		3,844		44,905		10,598
Net unrealized (depreciation) appreciation:
Non-Control/Non-Affiliate investments	(42,325)		2,683		7,470		16,687
Affiliate investments	(4,110)		683		(5,887)		(23,752)
Control investments	(99)		—		(192)		—
Other	(92)		—		(29)		—
Total net unrealized (depreciation) appreciation	(46,626)		3,366		1,362		(7,065)
Net realized and unrealized (loss) gain	(3,165)		7,210		46,267		3,533
NET INCREASE IN NET ASSETS RESULTING FROM OPERATIONS	$	6,579	$	15,779	$	62,721	$	30,889
BASIC AND DILUTED PER COMMON SHARE:
Net investment income	$	0.28	$	0.26	$	0.49	$	0.82
Net increase in net assets resulting from operations	$	0.19	$	0.47	$	1.85	$	0.93
WEIGHTED-AVERAGE SHARES OF COMMON STOCK OUTSTANDING:
Basic and diluted	34,351,597		33,316,055		33,921,300		33,246,811

(A)Refer to Note 4 — Related Party Transactions in the accompanying Notes to Consolidated Financial Statements for additional information.

THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED FINANCIAL STATEMENTS.

3

GLADSTONE INVESTMENT CORPORATION

CONSOLIDATED STATEMENTS OF CHANGES IN NET ASSETS

(IN THOUSANDS)

(UNAUDITED)

	2023		2022
NET ASSETS, MARCH 31	$	439,742	$	445,830
OPERATIONS
Net investment income	8,440		7,371
Net realized gain on investments	1,155		4,452
Net unrealized (depreciation) appreciation of investments	(820)		212
Net unrealized depreciation of other	11		—
Net increase in net assets from operations	8,786		12,035
DISTRIBUTIONS(A)
Distributions to common stockholders from net investment income ($0.21 and $0.10 per share, respectively)	(7,069)		(3,188)
Distributions to common stockholders from net realized gains ($0.15 and $0.25 per share, respectively)	(5,024)		(8,268)
Net decrease in net assets from distributions	(12,093)		(11,456)
CAPITAL ACTIVITY
Issuance of common stock	—		—
Discounts, commissions, and offering costs for issuance of common stock	—		—
Net increase in net assets from capital activity	—		—
NET (DECREASE) INCREASE IN NET ASSETS	(3,307)		579
NET ASSETS, JUNE 30	$	436,435	$	446,409
OPERATIONS
Net investment (loss) income	$	(1,730)	$	11,416
Net realized gain on investments	289		2,302
Net unrealized appreciation (depreciation) of investments	48,745		(10,643)
Net unrealized depreciation of other	52		—
Net increase in net assets from operations	47,356		3,075
DISTRIBUTIONS(A)
Distributions to common stockholders from net investment income ($0.20 and $0.14 per share, respectively)	(6,665)		(4,678)
Distributions to common stockholders from net realized gains ($0.16 and $0.08 per share, respectively)	(5,519)		(2,797)
Net decrease in net assets from distributions	(12,184)		(7,475)
CAPITAL ACTIVITY
Issuance of common stock	4,121		467
Discounts, commissions, and offering costs for issuance of common stock	(62)		(6)
Net increase in net assets from capital activity	4,059		461
NET INCREASE (DECREASE) IN NET ASSETS	39,231		(3,939)
NET ASSETS, SEPTEMBER 30	$	475,666	$	442,470
OPERATIONS
Net investment income	$	9,744	$	8,569
Net realized gain on investments	43,461		3,844
Net unrealized (depreciation) appreciation of investments	(46,534)		3,366
Net unrealized appreciation of other	(92)		—
Net increase in net assets from operations	6,579		15,779
DISTRIBUTIONS(A)
Distributions to common stockholders from net investment income ($0.43 and $0.22 per share, respectively)	(15,093)		(7,360)
Distributions to common stockholders from net realized gains ($0.81 and $0.14 per share, respectively)	(28,009)		(4,652)
Net decrease in net assets from distributions	(43,102)		(12,012)
CAPITAL ACTIVITY
Issuance of common stock	21,130		2,996
Discounts, commissions, and offering costs for issuance of common stock	(332)		(42)
Net increase in net assets from capital activity	20,798		2,954
NET (DECREASE) INCREASE IN NET ASSETS	(15,725)		6,721
NET ASSETS, DECEMBER 31	$	459,941	$	449,191

(A)Refer to Note 8 — Distributions to Common Stockholders in the accompanying Notes to Consolidated Financial Statements for additional information.

THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED FINANCIAL STATEMENTS.

4

GLADSTONE INVESTMENT CORPORATION

CONSOLIDATED STATEMENTS OF CASH FLOWS

(IN THOUSANDS)

(UNAUDITED)

	Nine Months Ended December 31,
	2023		2022
CASH FLOWS FROM OPERATING ACTIVITIES
Net increase in net assets resulting from operations	$	62,721	$	30,889
Adjustments to reconcile net increase in net assets resulting from operations to net cash (used in) provided by operating activities:
Purchase of investments	(182,988)		(133,506)
Principal repayments of investments	27,500		50,300
Net proceeds from the sale and recapitalization of investments	52,228		35,533
Net realized gain on investments	(44,905)		(10,598)
Net unrealized (appreciation) depreciation of investments	(1,391)		7,065
Net unrealized appreciation of other	29		—
Amortization of premiums, discounts, and acquisition costs, net	—		(12)
Amortization of deferred financing costs and discounts	1,708		1,350
Bad debt (recoveries) expense, net	(54)		202
Changes in assets and liabilities:
Increase in interest receivable	(3,537)		(1,036)
Decrease in due from administrative agent	1,748		4,585
Decrease (increase) in other assets, net	99		(597)
Increase in accounts payable and accrued expenses	810		964
Increase in interest payable	1,236		106
Increase in fees due to Adviser(A)	8,724		820
Decrease in fee due to Administrator(A)	(141)		(63)
Increase in other liabilities	496		593
Net cash used in operating activities	(75,717)		(13,405)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from issuance of common stock	25,251		3,463
Discounts, commissions, and offering costs for issuance of common stock	(297)		(48)
Proceeds from line of credit	231,900		82,900
Repayments on line of credit	(184,500)		(53,300)
Proceeds from issuance of notes payable	74,750		—
Deferred financing and offering costs	(3,671)		(315)
Distributions paid to common stockholders	(67,379)		(30,943)
Net cash provided by financing activities	76,054		1,757
NET INCREASE (DECREASE) IN CASH, CASH EQUIVALENTS, RESTRICTED CASH, AND RESTRICTED CASH EQUIVALENTS	337		(11,648)
CASH, CASH EQUIVALENTS, RESTRICTED CASH, AND RESTRICTED CASH EQUIVALENTS, BEGINNING OF PERIOD	3,248		14,495
CASH, CASH EQUIVALENTS, RESTRICTED CASH, AND RESTRICTED CASH EQUIVALENTS, END OF PERIOD	$	3,585	$	2,847
CASH PAID FOR INTEREST	$	15,585	$	10,329

(A)Refer to Note 4 — Related Party Transactions in the accompanying Notes to Consolidated Financial Statements for additional information.

THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED FINANCIAL STATEMENTS.

5

GLADSTONE INVESTMENT CORPORATION

CONSOLIDATED SCHEDULE OF INVESTMENTS

DECEMBER 31, 2023

(DOLLAR AMOUNTS IN THOUSANDS)

(UNAUDITED)

Company and Investment(A)(B)(D)(E)	Principal/Shares/ Units(F)(H)		Cost		Fair Value
NON-CONTROL/NON-AFFILIATE INVESTMENTS(L) – 134.9%
Secured First Lien Debt – 70.6%
Buildings and Real Estate – 8.3%
Dema/Mai Holdings, Inc. – Term Debt (SOFR+11.0%, 16.4% Cash, Due 7/2027)(J)	$	38,250	$	38,250	$	38,250
Diversified/Conglomerate Manufacturing – 1.2%
Phoenix Door Systems, Inc. – Line of Credit, $0 available (SOFR+7.0%, 12.4% Cash (0.3% Unused Fee), Due 3/2024)(J)	2,750		2,750		2,750
Phoenix Door Systems, Inc. – Term Debt (SOFR+11.0%, 16.4% Cash, Due 9/2024)(J)	3,200		3,200		2,544
			5,950		5,294
Diversified/Conglomerate Services – 18.0%
Horizon Facilities Services, Inc. – Term Debt (SOFR+7.5%, 12.9% Cash, Due 6/2026)(J)	57,700		57,700		57,700
Mason West, LLC – Term Debt (SOFR+10.0%, 15.4% Cash, Due 7/2025)(J)	25,250		25,250		25,250
			82,950		82,950
Healthcare, Education, and Childcare – 4.3%
Educators Resource, Inc. – Term Debt (SOFR+10.5%, 15.9% Cash, Due 3/2025)(J)	20,000		20,000		20,000
Home and Office Furnishings, Housewares, and Durable Consumer Products – 8.0%
Brunswick Bowling Products, Inc. – Term Debt (SOFR+10.0%, 15.4% Cash, Due 1/2026)(J)	17,700		17,700		17,700
Brunswick Bowling Products, Inc. – Term Debt (SOFR+10.0%, 15.4% Cash, Due 1/2026)(J)	6,850		6,850		6,850
Ginsey Home Solutions, Inc. – Term Debt (SOFR+10.0%, 15.4% Cash, Due 11/2025)(J)	12,200		12,200		12,153
			36,750		36,703
Hotels, Motels, Inns, and Gaming – 14.2%
Nocturne Luxury Villas, Inc. – Line of Credit, $0 available (SOFR+8.0%, 13.4% Cash, Due 6/2024)(J)	4,000		4,000		4,000
Nocturne Luxury Villas, Inc. – Term Debt (SOFR+10.5%, 14.5% Cash, Due 6/2026)(J)(P)	61,100		61,100		61,100
			65,100		65,100
Leisure, Amusement, Motion Pictures, and Entertainment – 6.1%
Schylling, Inc. – Term Debt (SOFR+11.0%, 16.4% Cash, Due 5/2025)(J)	27,981		27,981		27,981
Oil and Gas – 7.6%
The E3 Company, LLC – Line of Credit, $1,000 available (SOFR+5.5%, 10.9% Cash, Due 2/2025)(J)	1,000		1,000		1,000
The E3 Company, LLC – Term Debt (SOFR+9.0%, 14.4% Cash, Due 9/2028)(J)	33,750		33,750		33,750
			34,750		34,750
Printing and Publishing – 2.9%
Home Concepts Acquisition, Inc. – Line of Credit, $500 available (SOFR+6.0%, 11.4% Cash, Due 11/2024)(J)	1,500		1,500		1,500
Home Concepts Acquisition, Inc. – Term Debt (SOFR+9.0%, 14.4% Cash, Due 5/2028)(J)	12,000		12,000		12,000
			13,500		13,500
Total Secured First Lien Debt			$	325,231	$	324,528
Secured Second Lien Debt – 20.3%
Aerospace and Defense – 5.6%
Galaxy Technologies Holdings, Inc. – Term Debt (SOFR+4.1%, 9.5% Cash, Due 10/2026)(J)	$	6,900	$	6,900	$	6,900
Galaxy Technologies Holdings, Inc. – Term Debt (SOFR+7.0%, 12.4% Cash, Due 10/2026)(J)	18,796		18,796		18,796
			25,696		25,696
Cargo Transport – 2.8%
Diligent Delivery Systems – Term Debt (SOFR+9.0%, 14.4% Cash, Due 5/2024)(Q)	13,000		13,000		13,000

THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED FINANCIAL STATEMENTS.

6

GLADSTONE INVESTMENT CORPORATION

CONSOLIDATED SCHEDULE OF INVESTMENTS (Continued)

DECEMBER 31, 2023

(DOLLAR AMOUNTS IN THOUSANDS)

(UNAUDITED)

Company and Investment(A)(B)(D)(E)	Principal/Shares/ Units(F)(H)		Cost		Fair Value
Machinery (Non-Agriculture, Non-Construction, and Non-Electronic) – 11.9%
SFEG Holdings, Inc. – Term Debt (SOFR+7.0%, 12.5% Cash, Due 10/2028)(J)	54,644		54,644		54,644
Total Secured Second Lien Debt			$	93,340	$	93,340
Preferred Equity – 35.7%
Buildings and Real Estate – 5.7%
Dema/Mai Holdings, Inc. - Preferred Equity(C)(J)	21,000		$	21,000	$	26,102
Diversified/Conglomerate Services – 5.5%
Horizon Facilities Services, Inc. – Preferred Stock(C)(J)	10,080		—		5,382
Mason West, LLC – Preferred Stock(C)(J)	11,206		11,206		20,146
			11,206		25,528
Healthcare, Education, and Childcare – 6.6%
Educators Resource, Inc. – Preferred Stock(C)(J)	8,560		8,560		30,237
Home and Office Furnishings, Housewares, and Durable Consumer Products – 9.5%
Brunswick Bowling Products, Inc. – Preferred Stock(C)(J)	6,653		6,653		43,599
Ginsey Home Solutions, Inc. – Preferred Stock(C)(J)	19,280		9,583		—
			16,236		43,599
Hotels, Motels, Inns, and Gaming – 3.4%
Nocturne Luxury Villas, Inc. – Preferred Stock(C)(J)	6,600		6,600		15,457
Leisure, Amusement, Motion Pictures, and Entertainment – 2.2%
Schylling, Inc. – Preferred Stock(C)(J)	4,000		4,000		10,375
Oil and Gas – 2.4%
The E3 Company, LLC – Preferred Stock(C)(J)	11,233		11,233		11,233
Printing and Publishing - 0.4%
Home Concepts Acquisition, Inc. – Preferred Stock(C)(J)	3,275		3,275		1,710
Total Preferred Equity			$	82,110	$	164,241
Common Equity/Equivalents – 8.3%
Aerospace and Defense – 0.0%
Galaxy Technologies Holdings, Inc. – Common Stock(C)(J)	16,957		$	11,513	$	58
Cargo Transport – 0.1%
Diligent Delivery Systems – Common Stock Warrants(C)(Q)	8	%	500		500
Diversified/Conglomerate Manufacturing– 0.0%
Phoenix Door Systems, Inc. – Common Stock(C)(J)	4,221		1,830		—
Home and Office Furnishings, Housewares, and Durable Consumer Products – 0.0%
Ginsey Home Solutions, Inc. – Common Stock(C)(J)	63,747		8		—
Machinery (Non-Agriculture, Non-Construction, and Non-Electronic)- 8.2%
SFEG Holdings, Inc. – Common Stock(C)(J)	18,721		30,746		37,649
Personal and Non-Durable Consumer Products (Manufacturing Only) – 0.0%
Funko Acquisition Holdings, LLC(K) – Common Units(C)(O)	4,239		21		22
Total Common Equity/Equivalents			$	44,618	$	38,229
Total Non-Control/Non-Affiliate Investments			$	545,299	$	620,338

THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED FINANCIAL STATEMENTS.

7

GLADSTONE INVESTMENT CORPORATION

CONSOLIDATED SCHEDULE OF INVESTMENTS (Continued)

DECEMBER 31, 2023

(DOLLAR AMOUNTS IN THOUSANDS)

(UNAUDITED)

Company and Investment(A)(B)(D)(E)	Principal/Shares/ Units(F)(H)		Cost		Fair Value
AFFILIATE INVESTMENTS(M) – 60.5%
Secured First Lien Debt – 32.0%
Diversified/Conglomerate Services – 16.8%
ImageWorks Display and Marketing Group, Inc. – Term Debt (SOFR+11.0%, 16.4% Cash, Due 11/2025)(J)	22,000		22,000		22,000
J.R. Hobbs Co. - Atlanta, LLC – Line of Credit, $0 available (SOFR+6.0%, 11.4% Cash, Due 6/2025)(G)(J)	5,000		5,000		2,670
J.R. Hobbs Co. - Atlanta, LLC - Term Debt (SOFR+6.0%, 11.4% Cash, Due 6/2025)(G)(J)	16,500		16,500		8,810
J.R. Hobbs Co. - Atlanta, LLC – Term Debt (SOFR+10.3%, 15.6% Cash, Due 6/2025)(G)(J)	26,000		26,000		13,882
J.R. Hobbs Co. - Atlanta, LLC – Term Debt (SOFR+6.0%, 11.4% Cash, Due 6/2025)(G)(J)	2,438		2,438		1,301
The Maids International, LLC – Term Debt (SOFR+10.5%, 15.9% Cash, Due 3/2025)(J)	28,560		28,560		28,560
			100,498		77,223
Home and Office Furnishings, Housewares, and Durable Consumer Products – 9.3%
Old World Christmas, Inc. – Term Debt (SOFR+9.5%, 14.9% Cash, Due 12/2025)(J)	43,000		43,000		43,000
Mining, Steel, Iron and Non-Precious Metals – 4.0%
Utah Pacific Bridge & Steel, Ltd. – Term Debt (SOFR+10.0%, 15.4% Cash, Due 7/2026)(J)	18,250		18,250		18,250
Telecommunications – 1.9%
B+T Group Acquisition, Inc.(K) – Line of Credit, $0 available (SOFR+2.0%, 7.4% Cash, Due 12/2024)(J)	2,800		2,800		2,800
B+T Group Acquisition, Inc.(K) – Term Debt (SOFR+2.0%, 7.4% Cash, Due 12/2024)(J)	14,000		14,000		6,081
			16,800		8,881
Total Secured First Lien Debt			$	178,548	$	147,354
Secured Second Lien Debt – 9.6%
Chemicals, Plastics, and Rubber – 4.2%
PSI Molded Plastics, Inc. – Term Debt (SOFR+5.5%, 10.9% Cash, Due 1/2024)(J)	$	26,618	$	26,618	$	19,256
Diversified/Conglomerate Services – 5.4%
Nth Degree, Inc. – Term Debt (SOFR+8.5%, 13.9% Cash, Due 6/2029)(I)	25,000		25,000		24,884
Total Secured Second Lien Debt			$	51,618	$	44,140
Preferred Equity – 11.0%
Chemicals, Plastics, and Rubber – 0.0%
PSI Molded Plastics, Inc. – Preferred Stock(C)(J)	158,598		$	19,730	$	—
Diversified/Conglomerate Services – 1.8%
ImageWorks Display and Marketing Group, Inc. – Preferred Stock(C)(J)	67,490		6,749		1,855
J.R. Hobbs Co. – Atlanta, LLC – Preferred Stock(C)(J)	10,920		10,920		—
The Maids International, LLC – Preferred Stock(C)(J)	6,640		6,640		6,392
			24,309		8,247
Home and Office Furnishings, Housewares, and Durable Consumer Products – 7.1%
Old World Christmas, Inc. – Preferred Stock(C)(J)	6,180		—		32,595
Mining, Steel, Iron and Non-Precious Metals – 2.1%
Utah Pacific Bridge & Steel, Ltd. - Preferred Stock(C)(J)	6,000		6,000		9,581
Telecommunications – 0.0%
B+T Group Acquisition, Inc.(K) – Preferred Stock(C)(J)	14,304		4,722		—
Total Preferred Equity			$	54,761	$	50,423

THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED FINANCIAL STATEMENTS.

8

GLADSTONE INVESTMENT CORPORATION

CONSOLIDATED SCHEDULE OF INVESTMENTS (Continued)

DECEMBER 31, 2023

(DOLLAR AMOUNTS IN THOUSANDS)

(UNAUDITED)

Company and Investment(A)(B)(D)(E)	Principal/Shares/ Units(F)(H)			Cost		Fair Value
Common Equity/Equivalents – 7.9%
Diversified/Conglomerate Services – 7.9%
Nth Degree Investment Group, LLC – Common Stock(C)(J)	17,216,976			$	6,219	$	36,309
Telecommunications – 0.0%
B+T Group Acquisition, Inc.(K) – Common Stock Warrants(C)(J)	3.5		%	—		—
Total Common Equity/Equivalents				$	6,219	$	36,309
Total Affiliate Investments				$	291,146	$	278,226
CONTROL INVESTMENTS(N) – 0.9%
Secured First Lien Debt – 0.9%
Diversified/Conglomerate Manufacturing – 0.9%
Edge Adhesives Holdings, Inc.(K) – Term Debt (SOFR+5.5%, 10.9%Cash, Due 8/2024)(G)(J)	9,210			9,210		4,244
Personal and Non-Durable Consumer Products (Manufacturing Only) – 0.0%
The Mountain Corporation – Line of Credit, $0 available (SOFR+5.0%, 10.4% Cash, Due 5/2023)(G)(J)	4,550			4,550		—
Total Secured First Lien Debt				$	13,760	$	4,244
Secured Second Lien Debt – 0.0%
Personal and Non-Durable Consumer Products (Manufacturing Only) – 0.0%
The Mountain Corporation – Term Debt (SOFR+4.0%, 9.4% Cash, Due 4/2024)(G)(J)	$	3,200		$	3,200	$	—
Total Secured Second Lien Debt				$	3,200	$	—
Preferred Equity – 0.0%
Diversified/Conglomerate Manufacturing – 0.0%
Edge Adhesives Holdings, Inc.(K) – Preferred Stock(C)(J)	8,199			$	8,199	$	—
Personal and Non-Durable Consumer Products (Manufacturing Only) – 0.0%
The Mountain Corporation – Preferred Stock(C)(J)	6,899			6,899		$	—
Total Preferred Equity				$	15,098	$	—
Common Equity/Equivalents – 0.0%
Personal and Non-Durable Consumer Products (Manufacturing Only) – 0.0%
The Mountain Corporation – Common Stock(C)(J)	751			$	1	$	—
Total Common Equity/Equivalents				$	1	$	—
Total Control Investments				$	32,059	$	4,244
TOTAL INVESTMENTS – 196.3%				$	868,504	$	902,808

(A)Certain of the securities listed are issued by affiliate(s) of the indicated portfolio company. The majority of the securities listed, totaling $702.9 million at fair value, are pledged as collateral to our revolving line of credit, as described further in Note 5—Borrowings in the accompanying Notes to Consolidated Financial Statements. Additionally, under Section 55 of the Investment Company Act of 1940, as amended (the "1940 Act"), we may not acquire any non-qualifying assets unless, at the time such acquisition is made, qualifying assets represent at least 70% of our total assets. As of December 31, 2023, our investment in Funko Acquisition Holdings, LLC ("Funko") was considered a non-qualifying asset under Section 55 of the 1940 Act and represented less than 0.1% of total investments, at fair value.

(B)Unless indicated otherwise, all cash interest rates are indexed to 30 day Secured Overnight Financing Rate ("SOFR"), which was 5.4% as of December 31, 2023. If applicable, paid-in-kind interest rates are noted separately from the cash interest rate. Certain securities are subject to an interest rate floor. The cash interest rate is the greater of the floor or the reference rate plus a spread. Due dates represent the contractual maturity date.

(C)Security is non-income producing.

THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED FINANCIAL STATEMENTS.

9

GLADSTONE INVESTMENT CORPORATION

CONSOLIDATED SCHEDULE OF INVESTMENTS (Continued)

DECEMBER 31, 2023

(DOLLAR AMOUNTS IN THOUSANDS)

(UNAUDITED)

(D)Category percentages represent the fair value of each category and subcategory as a percentage of net assets as of December 31, 2023.

(E)Unless indicated otherwise, all of our investments are valued using Level 3 inputs within the Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") Topic 820, "Fair Value Measurements and Disclosures" ("ASC 820") fair value hierarchy. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.

(F)Where applicable, aggregates all shares of a class of stock owned without regard to specific series owned within such class (some series of which may or may not be voting shares) or aggregates all warrants to purchase shares of a class of stock owned without regard to specific series of such class of stock such warrants allow us to purchase.

(G)Debt security is on non-accrual status.

(H)Represents the principal balance, presented in thousands, for debt investments and the number of shares/units held for equity investments. Warrants are represented as a percentage of ownership, as applicable.

(I)Fair value was based on an internal yield analysis or on estimates of value submitted by a third-party valuation firm. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.

(J)Fair value was based on the total enterprise value of the portfolio company, which is generally allocated to the portfolio company’s securities in order of their relative priority in the capital structure. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.

(K)One of our affiliated funds, Gladstone Capital Corporation, co-invested with us in this portfolio company pursuant to an exemptive order granted by the U.S. Securities and Exchange Commission.

(L)Non-Control/Non-Affiliate investments, as defined by the 1940 Act, are those that are neither Control nor Affiliate investments and in which we own less than 5.0% of the issued and outstanding voting securities.

(M)Affiliate investments, as defined by the 1940 Act, are those that are not Control investments and in which we own, with the power to vote, between and inclusive of 5.0% and 25.0% of the issued and outstanding voting securities.

(N)Control investments, as defined by the 1940 Act, are those where we have the power to exercise a controlling influence over the management or policies of the portfolio company, which may include owning, with the power to vote, more than 25.0% of the issued and outstanding voting securities.

(O)Our investment in Funko was valued using Level 2 inputs within the ASC 820 fair value hierarchy. Our common units in Funko are convertible into class A common stock in Funko, Inc. upon meeting certain requirements. Fair value was based on the closing market price of shares of Funko, Inc. as of the reporting date, less a discount for lack of marketability. Funko, Inc. is traded on the Nasdaq Global Select Market under the trading symbol “FNKO.” Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.

(P)Debt security is subject to an interest rate ceiling.

(Q)Fair value was based on the expected exit or payoff amount, where such even has occurred or is expected to occur imminently.

THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED FINANCIAL STATEMENTS.

10

GLADSTONE INVESTMENT CORPORATION

CONSOLIDATED SCHEDULE OF INVESTMENTS

MARCH 31, 2023

(DOLLAR AMOUNTS IN THOUSANDS)

Company and Investment(A)(B)(D)(E)	Principal/Shares/ Units(F)(H)		Cost		Fair Value
NON-CONTROL/NON-AFFILIATE INVESTMENTS(L) – 113.0%
Secured First Lien Debt – 63.6%
Buildings and Real Estate – 8.7%
Dema/Mai Holdings, Inc. – Term Debt (L+11.0%, 15.9% Cash, Due 7/2027)(J)	$	38,250	$	38,250	$	38,250
Diversified/Conglomerate Manufacturing – 1.2%
Phoenix Door Systems, Inc – Line of Credit, $0 available (L+7.0%, 11.9% Cash (0.3% Unused Fee), Due 3/2024)(I)	2,550		2,550		2,391
Phoenix Door Systems, Inc. – Term Debt (L+11.0%, 15.9% Cash, Due 9/2024)(I)	3,200		3,200		3,000
			5,750		5,391
Diversified/Conglomerate Services – 25.1%
Counsel Press, Inc. – Term Debt (L+11.8%, 16.6% Cash, Due 3/2024)(J)	21,100		21,100		21,100
Counsel Press, Inc. – Term Debt (L+13.0%, 17.9% Cash, Due 3/2024)(J)	6,400		6,400		6,400
Horizon Facilities Services, Inc. – Term Debt (L+7.5%, 12.4% Cash, Due 6/2026)(J)	57,700		57,700		57,700
Mason West, LLC – Term Debt (L+10.0%, 14.9% Cash, Due 7/2025)(J)	25,250		25,250		25,250
			110,450		110,450
Healthcare, Education, and Childcare – 4.5%
Educators Resource, Inc. – Term Debt (L+10.5%, 15.4% Cash, Due 11/2023)(J)	20,000		20,000		20,000
Home and Office Furnishings, Housewares, and Durable Consumer Products – 8.0%
Brunswick Bowling Products, Inc. – Term Debt (L+10.0%, 14.9% Cash, Due 1/2026) (J)	17,700		17,700		17,700
Brunswick Bowling Products, Inc. – Term Debt (L+10.0%, 14.9% Cash, Due 1/2026) (J)	6,850		6,850		6,850
Ginsey Home Solutions, Inc. – Term Debt (L+10.0%, 14.9% Cash, Due 11/2025)(J)	12,200		12,200		10,676
			36,750		35,226
Hotels, Motels, Inns, and Gaming – 9.7%
Nocturne Luxury Villas, Inc. – Line of Credit, $2,000 available (L+8.0%, 12.9% Cash, Due 6/2024)(J)	—		—		—
Nocturne Luxury Villas, Inc. – Term Debt (L+10.5%, 15.4% Cash, Due 6/2026)(J)	42,450		42,450		42,450
			42,450		42,450
Leisure, Amusement, Motion Pictures, and Entertainment – 6.4%
Schylling, Inc. – Term Debt (L+11.0%, 15.9% Cash, Due 5/2025)(J)	27,981		27,981		27,981
Total Secured First Lien Debt			$	281,631	$	279,748
Secured Second Lien Debt – 11.6%
Aerospace and Defense – 5.0%
Galaxy Technologies Holdings, Inc. – Term Debt (L+4.1%, 9.0% Cash, Due 10/2026)(J)	$	6,900	$	6,900	$	5,965
Galaxy Technologies Holdings, Inc. – Term Debt (L+7.0%, 11.9% Cash, Due 10/2026)(J)	18,796		18,796		16,250
			25,696		22,215
Cargo Transport – 3.0%
Diligent Delivery Systems – Term Debt (L+9.0%, 13.9% Cash, Due 5/2024)(I)	13,000		13,000		12,983
Machinery (Non-Agriculture, Non-Construction, and Non-Electronic) – 3.6%
SFEG Holdings, Inc. – Term Debt (L+7.0%, 11.9% Cash, Due 11/2024)(J)	3,128		3,128		3,128
SFEG Holdings, Inc. – Term Debt (L+7.0%, 11.9% Cash, Due 11/2024)(J)	12,516		12,516		12,516
			15,644		15,644
Total Secured Second Lien Debt			$	54,340	$	50,842

THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED FINANCIAL STATEMENTS.

11

GLADSTONE INVESTMENT CORPORATION

CONSOLIDATED SCHEDULE OF INVESTMENTS

MARCH 31, 2023

(DOLLAR AMOUNTS IN THOUSANDS)

Company and Investment(A)(B)(D)(E)	Principal/Shares/ Units(F)(H)		Cost		Fair Value
Preferred Equity – 37.4%
Building and Real Estate – 5.1%
Dema/Mai Holdings, Inc. – Preferred Equity(C)(J)	21,000		$	21,000	$	22,321
Diversified/Conglomerate Services – 11.6%
Counsel Press, Inc. – Preferred Stock(C)(J)	6,995		6,995		27,885
Horizon Facilities Services, Inc. – Preferred Stock(C)(J)	10,080		—		12,345
Mason West, LLC – Preferred Stock(C)(J)	11,206		11,206		10,940
			18,201		51,170
Healthcare, Education, and Childcare – 4.0%
Educators Resource, Inc. – Preferred Stock(C)(J)	8,560		8,560		17,445
Home and Office Furnishings, Housewares, and Durable Consumer Products – 7.7%
Brunswick Bowling Products, Inc. – Preferred Stock(C)(J)	6,653		6,653		33,969
Ginsey Home Solutions, Inc. – Preferred Stock(C)(J)	19,280		9,583		—
			16,236		33,969
Hotels, Motels, Inns, and Gaming Total – 3.7%
Nocturne Luxury Villas, Inc. – Preferred Stock (C)(J)	6,600		6,600		16,263
Leisure, Amusement, Motion Pictures, and Entertainment – 4.3%
Schylling, Inc. – Preferred Stock(C)(J)	4,000		4,000		18,922
Machinery (Non-Agriculture, Non-Construction, and Non-Electronic) – 1.0%
SFEG Holdings, Inc. – Preferred Stock(C)(J)	29,577		4,643		4,444
Total Preferred Equity			$	79,240	$	164,534
Common Equity/Equivalents – 0.4%
Aerospace and Defense – 0.0%
Galaxy Technologies Holdings, Inc. – Common Stock(C)(J)	16,957		$	11,513	$	—
Cargo Transport – 0.4%
Diligent Delivery Systems – Common Stock Warrants(C)(J)	8	%	500		1,724
Diversified/Conglomerate Manufacturing– 0.0%
Phoenix Door Systems, Inc. – Common Stock(C)(J)	4,221		1,830		—
Home and Office Furnishings, Housewares, and Durable Consumer Products – 0.0%
Ginsey Home Solutions, Inc. – Common Stock(C)(J)	63,747		8		—
Machinery (Non-Agriculture, Non-Construction, and Non-Electronic) – 0.0%
SFEG Holdings, Inc. – Common Stock(C)(J)	221,500		222		—
Personal and Non-Durable Consumer Products (Manufacturing Only) – 0.0%
Funko Acquisition Holdings, LLC(K) – Common Units(C)(O)	4,239		21		27
Total Common Equity/Equivalents			$	14,094	$	1,751
Total Non-Control/Non-Affiliate Investments			$	429,305	$	496,875

THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED FINANCIAL STATEMENTS.

12

GLADSTONE INVESTMENT CORPORATION

CONSOLIDATED SCHEDULE OF INVESTMENTS

MARCH 31, 2023

(DOLLAR AMOUNTS IN THOUSANDS)

Company and Investment(A)(B)(D)(E)	Principal/Shares/ Units(F)(H)		Cost		Fair Value
AFFILIATE INVESTMENTS(M) – 58.2%
Secured First Lien Debt – 35.8%
Diversified/Conglomerate Manufacturing – 1.0%
Edge Adhesives Holdings, Inc.(K) – Term Debt (L+5.5%, 10.4% Cash, Due 8/2024)(G)(J)	$	9,210	$	9,210	$	4,255
Diversified/Conglomerate Services – 17.7%
ImageWorks Display and Marketing Group, Inc. – Term Debt (L+11.0%, 15.9% Cash, Due 11/2025)(J)	22,000		22,000		22,000
J.R. Hobbs Co. - Atlanta, LLC - Line of Credit, $0 available (L+6.0%, 10.9% Cash, Due 6/2025)(G)(J)	5,000		5,000		2,744
J.R. Hobbs Co. - Atlanta, LLC - Term Debt (L+6.0%, 10.9% Cash, Due 6/2025) (G)(J)	16,500		16,500		9,054
J.R. Hobbs Co. - Atlanta, LLC – Term Debt (L+10.3%, 15.1% Cash, Due 6/2025) (G)(J)	26,000		26,000		14,268
J.R. Hobbs Co. - Atlanta, LLC – Term Debt (L+6.0%, 10.9% Cash, Due 6/2025) (G)(J)	2,438		2,438		1,338
The Maids International, LLC – Term Debt (L+10.5%, 15.4% Cash, Due 3/2025)(J)	28,560		28,560		28,560
			100,498		77,964
Home and Office Furnishings, Housewares, and Durable Consumer Products – 9.2%
Old World Christmas, Inc. – Term Debt (L+9.5%, 14.4% Cash, Due 12/2025)(J)	40,500		40,500		40,500
Mining, Steel, Iron and Non-Precious Metals Total – 4.1%
Utah Pacific Bridge & Steel, Ltd. - Term Debt (L+10.0%, 14.9% Cash, Due 7/2026)(J)	18,250		18,250		18,250
Telecommunications – 3.8%
B+T Group Acquisition, Inc.(K) – Line of Credit, $0 available (L+11.0%, 15.9% Cash, Due 12/2024)(J)	2,800		2,800		2,800
B+T Group Acquisition, Inc.(K) – Term Debt (L+11.0%, 15.9% Cash, Due 12/2024)(J)	14,000		14,000		14,000
			16,800		16,800
Total Secured First Lien Debt			$	185,258	$	157,769
Secured Second Lien Debt – 5.7%
Chemicals, Plastics, and Rubber – 5.7%
PSI Molded Plastics, Inc. – Term Debt (L+5.5%, 10.4% Cash, Due 1/2024)(J)	$	26,618	$	26,618	$	24,892
Total Secured Second Lien Debt			$	26,618	$	24,892
Preferred Equity – 13.2%
Chemicals, Plastics, and Rubber – 0.0%
PSI Molded Plastics, Inc. – Preferred Stock(C)(J)	158,598		$	19,730	$	—
Diversified/Conglomerate Manufacturing – 0.0%
Edge Adhesives Holdings, Inc.(K) – Preferred Stock(C)(J)	8,199		8,199		—
Diversified/Conglomerate Services – 3.2%
ImageWorks Display and Marketing Group, Inc. – Preferred Stock(C)(J)	67,490		6,749		10,926
J.R. Hobbs Co. – Atlanta, LLC – Preferred Stock(C)(J)	10,920		10,920		—
The Maids International, LLC – Preferred Stock(C)(J)	6,640		6,640		3,200
			24,309		14,126
Home and Office Furnishings, Housewares, and Durable Consumer Products – 7.7%
Old World Christmas, Inc. – Preferred Stock(C)(J)	6,180		—		33,990
Mining, Steel, Iron and Non-Precious Metals – 1.8%
Utah Pacific Bridge & Steel, Ltd. - Preferred Stock(C)(J)	6,000		6,000		7,748

THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED FINANCIAL STATEMENTS.

13

GLADSTONE INVESTMENT CORPORATION

CONSOLIDATED SCHEDULE OF INVESTMENTS

MARCH 31, 2023

(DOLLAR AMOUNTS IN THOUSANDS)

Company and Investment(A)(B)(D)(E)	Principal/Shares/ Units(F)(H)			Cost		Fair Value
Telecommunications – 0.5%
B+T Group Acquisition, Inc.(K) – Preferred Stock(C)(J)	14,304			4,722		2,187
Total Preferred Equity				$	62,960	$	58,051
Common Equity/Equivalents – 3.5%
Diversified/Conglomerate Services – 3.5%
Nth Degree Investment Group, LLC – Common Stock(C)(J)	14,360,000			$	1,219	$	15,243
Telecommunications – 0.0%
B+T Group Acquisition, Inc.(K) – Common Stock Warrants(C)(J)	3.5		%	—		—
Total Common Equity/Equivalents				$	1,219	$	15,243
Total Affiliate Investments				$	276,055	$	255,955
CONTROL INVESTMENTS(N) – 0.2%:
Secured First Lien Debt – 0.0%
Personal and Non-Durable Consumer Products (Manufacturing Only) – 0.0%
The Mountain Corporation – Line of Credit, $150 available (L+5.0%, 9.9% Cash, Due 5/2023)(G)(J)	$	4,550		$	4,550	$	—
Total Secured First Lien Debt				$	4,550	$	—
Secured Second Lien Debt – 0.0%
Personal and Non-Durable Consumer Products (Manufacturing Only) – 0.0%
The Mountain Corporation – Term Debt (L+4.0%, 8.9% Cash, Due 4/2024)(G)(J)	$	3,200		$	3,200	$	—
Total Secured Second Lien Debt				$	3,200	$	—
Preferred Equity – 0.0%
Personal and Non-Durable Consumer Products (Manufacturing Only) – 0.0%
The Mountain Corporation – Preferred Stock(C)(J)	6,899			$	6,899	$	—
Total Preferred Equity				$	6,899	$	—
Common Equity/Equivalents – 0.2%
Leisure, Amusement, Motion Pictures, and Entertainment – 0.2%
Gladstone SOG Investments, Inc. - Common Stock(C)(J)	100			$	620	$	713
Personal and Non-Durable Consumer Products (Manufacturing Only) – 0.0%
The Mountain Corporation – Common Stock(C)(J)	751			1		—
Total Common Equity/Equivalents				$	621	$	713
Total Control Investments				$	15,270	$	713
TOTAL INVESTMENTS – 171.4%(P)				$	720,630	$	753,543

THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED FINANCIAL STATEMENTS.

14

GLADSTONE INVESTMENT CORPORATION

CONSOLIDATED SCHEDULE OF INVESTMENTS

MARCH 31, 2023

(DOLLAR AMOUNTS IN THOUSANDS)

(A)Certain of the securities listed are issued by affiliate(s) of the indicated portfolio company. The majority of the securities listed, totaling $639.5 million at fair value, are pledged as collateral to our revolving line of credit, as described further in Note 5—Borrowings in the accompanying Notes to Consolidated Financial Statements. Additionally, under Section 55 of the 1940 Act, we may not acquire any non-qualifying assets unless, at the time such acquisition is made, qualifying assets represent at least 70% of our total assets. As of March 31, 2023, our investment in Funko was considered a non-qualifying asset under Section 55 of the 1940 Act and represented less than 0.1% of total investments, at fair value.

(B)Unless indicated otherwise, all cash interest rates are indexed to 30-day London Interbank Offered Rate ("LIBOR" or "L"), which was 4.9% as of March 31, 2023. If applicable, paid-in-kind interest rates are noted separately from the cash interest rate. Certain securities are subject to an interest rate floor. The cash interest rate is the greater of the floor or 30-day LIBOR plus a spread. Due dates represent the contractual maturity date.

(C)Security is non-income producing.

(D)Category percentages represent the fair value of each category and subcategory as a percentage of net assets as of March 31, 2023.

(E)Unless indicated otherwise, all of our investments are valued using Level 3 inputs within the ASC 820 fair value hierarchy. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.

(F)Where applicable, aggregates all shares of a class of stock owned without regard to specific series owned within such class (some series of which may or may not be voting shares) or aggregates all warrants to purchase shares of a class of stock owned without regard to specific series of such class of stock such warrants allow us to purchase.

(G)Debt security is on non-accrual status.

(H)Represents the principal balance, presented in thousands, for debt investments and the number of shares/units held for equity investments. Warrants are represented as a percentage of ownership, as applicable.

(I)Fair value was based on an internal yield analysis or on estimates of value submitted by a third-party valuation firm. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.

(J)Fair value was based on the total enterprise value of the portfolio company, which is generally allocated to the portfolio company’s securities in order of their relative priority in the capital structure. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.

(K)One of our affiliated funds, Gladstone Capital Corporation, co-invested with us in this portfolio company pursuant to an exemptive order granted by the U.S. Securities and Exchange Commission.

(L)Non-Control/Non-Affiliate investments, as defined by the 1940 Act, are those that are neither Control nor Affiliate investments and in which we own less than 5.0% of the issued and outstanding voting securities.

(M)Affiliate investments, as defined by the 1940 Act, are those that are not Control investments and in which we own, with the power to vote, between and inclusive of 5.0% and 25.0% of the issued and outstanding voting securities.

(N)Control investments, as defined by the 1940 Act, are those where we have the power to exercise a controlling influence over the management or policies of the portfolio company, which may include owning, with the power to vote, more than 25.0% of the issued and outstanding voting securities.

(O)Our investment in Funko was valued using Level 2 inputs within the ASC 820 fair value hierarchy. Our common units in Funko are convertible into class A common stock in Funko, Inc. upon meeting certain requirements. Fair value was based on the closing market price of shares of Funko, Inc. as of the reporting date, less a discount for lack of marketability. Funko, Inc. is traded on the Nasdaq Global Select Market under the trading symbol “FNKO.” Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.

(P)Cumulative gross unrealized appreciation for federal income tax purposes is $150.4 million; cumulative gross unrealized depreciation for federal income tax purposes is $119.3 million. Cumulative net unrealized appreciation is $31.1 million, based on a tax cost of $722.4 million.

THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED FINANCIAL STATEMENTS.

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GLADSTONE INVESTMENT CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

DECEMBER 31, 2023

(DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA AND AS OTHERWISE INDICATED)

(UNAUDITED)

NOTE 1. ORGANIZATION

Gladstone Investment Corporation (“Gladstone Investment”) was incorporated under the General Corporation Law of the State of Delaware on February 18, 2005, and completed an initial public offering on June 22, 2005. The terms “the Company,” “we,” “our” and “us” all refer to Gladstone Investment and its consolidated subsidiaries. We are an externally advised, closed-end, non-diversified management investment company that has elected to be treated as a business development company (“BDC”) under the Investment Company Act of 1940, as amended (the “1940 Act”), and are applying the guidance of Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 946, “Financial Services-Investment Companies” (“ASC 946”). In addition, we have elected to be treated for U.S. federal income tax purposes as a regulated investment company (“RIC”) under the Internal Revenue Code of 1986, as amended (the “Code”). We were established for the purpose of investing in debt and equity securities of established private businesses in the United States (“U.S.”). Debt investments primarily take the form of two types of loans: secured first lien loans and secured second lien loans. Equity investments primarily take the form of preferred or common equity (or warrants or options to acquire the foregoing), often in connection with buyouts and other recapitalizations. Our investment objectives are to: (i) achieve and grow current income by investing in debt securities of established businesses that we believe will provide stable earnings and cash flow to pay expenses, make principal and interest payments on our outstanding indebtedness and make distributions to stockholders that grow over time, and (ii) provide our stockholders with long-term capital appreciation in the value of our assets by investing in equity securities of established businesses, generally in combination with the aforementioned debt securities, that we believe can grow over time to permit us to sell our equity investments for capital gains. We intend that our investment portfolio over time will consist of approximately 75.0% in debt investments and 25.0% in equity investments, at cost. As of December 31, 2023, our investment portfolio was comprised of 76.6% in debt investments and 23.4% in equity investments, at cost.

Gladstone Business Investment, LLC (“Business Investment”), a wholly-owned subsidiary of ours, was established on August 11, 2006 for the sole purpose of holding certain investments pledged as collateral under our line of credit. The financial statements of Business Investment are consolidated with those of Gladstone Investment.

We are externally managed by Gladstone Management Corporation (the “Adviser”), an affiliate of ours and a U.S. Securities and Exchange Commission (“SEC”) registered investment adviser, pursuant to an investment advisory and management agreement (the “Advisory Agreement”). Administrative services are provided by Gladstone Administration, LLC (the “Administrator”), an affiliate of ours and the Adviser, pursuant to an administration agreement (the “Administration Agreement”). Refer to Note 4 — Related Party Transactions for more information regarding these arrangements.

NOTE 2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Unaudited Interim Financial Statements and Basis of Presentation

We prepare our interim financial statements in accordance with accounting principles generally accepted in the U.S. (“GAAP”) for interim financial information and pursuant to the requirements for reporting on Form 10-Q and Articles 6, 10 and 12 of SEC Regulation S-X. Accordingly, we have not included in this quarterly report all of the information and notes required by GAAP for annual financial statements. The accompanying Consolidated Financial Statements include our accounts and those of our wholly-owned subsidiaries. All significant intercompany balances and transactions have been eliminated. In accordance with Article 6 of Regulation S-X, we do not consolidate portfolio company investments. Under the investment company rules and regulations pursuant to the American Institute of Certified Public Accountants Audit and Accounting Guide for Investment Companies, codified in ASC 946, we are precluded from consolidating any entity other than another investment company, except that ASC 946 provides for the consolidation of a controlled operating company that provides substantially all of its services to the investment company or its consolidated subsidiaries. In our opinion, all adjustments, consisting solely of normal recurring accruals, necessary for the fair statement of financial statements for the interim periods have been included. The results of operations for the three and nine months ended December 31, 2023 are not necessarily indicative of results that ultimately may be achieved for the fiscal year ending March 31, 2024 or any future interim period. The interim financial statements and notes thereto should be read in conjunction with the financial

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statements and notes thereto included in our annual report on Form 10-K for the fiscal year ended March 31, 2023, as filed with the SEC on May 10, 2023.

Use of Estimates

Preparing financial statements requires management to make estimates and assumptions that affect the amounts reported in our accompanying Consolidated Financial Statements and these Notes to Consolidated Financial Statements. Actual results may differ from those estimates.

Investment Valuation Policy

Accounting Recognition

We record our investments at fair value in accordance with the FASB ASC Topic 820, “Fair Value Measurements and Disclosures” (“ASC 820”) and the 1940 Act. Investment transactions are recorded on the trade date. Realized gains or losses are generally measured by the difference between the net proceeds from the repayment or sale and the cost basis of the investment, without regard to unrealized appreciation or depreciation previously recognized, and include investments charged off during the period, net of recoveries. Unrealized appreciation or depreciation primarily reflects the change in investment fair values, including the reversal of previously recorded unrealized appreciation or depreciation when gains or losses are realized.

Board Responsibility

Our board of directors (the “Board of Directors”) has approved investment valuation policies and procedures pursuant to Rule 2a-5 under the 1940 Act (the “Policy”) and, in July 2022, designated the Adviser to serve as the Board of Directors’ valuation designee ("Valuation Designee") under the 1940 Act.

In accordance with the 1940 Act, our Board of Directors has the ultimate responsibility for reviewing the good faith fair value determination of our investments for which market quotations are not readily available based on our Policy and for overseeing the Valuation Designee. Such review and oversight includes receiving written fair value determinations and supporting materials provided by the Valuation Designee, in coordination with the Administrator and with the oversight by the Company's chief valuation officer (collectively, the “Valuation Team”). The Valuation Committee of our Board of Directors (comprised entirely of independent directors) meets to review the valuation determinations and supporting materials, discusses the information provided by the Valuation Team, determines whether the Valuation Team has followed the Policy, and reviews other facts and circumstances, including current valuation risks, conflicts of interest, material valuation matters, appropriateness of valuation methodologies, back-testing results, price challenges/overrides, and ongoing monitoring and oversight of pricing services. After the Valuation Committee concludes its meeting, it and the chief valuation officer, representing the Valuation Designee, present the Valuation Committee’s findings on the Valuation Designee's determinations to the entire Board of Directors so that the full Board of Directors may review the Valuation Designee's determined fair values of such investments in accordance with the Policy.

There is no single standard for determining fair value (especially for privately-held businesses), as fair value depends upon the specific facts and circumstances of each individual investment. In determining the fair value of our investments, the Valuation Team, led by the chief valuation officer, uses the Policy, and each quarter the Valuation Committee and Board of Directors review the Policy to determine if changes thereto are advisable and whether the Valuation Team has applied the Policy consistently.

Use of Third-Party Valuation Firms

The Valuation Team engages third-party valuation firms to provide independent assessments of fair value of certain of our investments.

A third-party valuation firm generally provides estimates of fair value on our debt investments. The Valuation Team generally assigns the third-party valuation firm’s estimates of fair value to our debt investments where we do not have the ability to effectuate a sale of the applicable portfolio company. The Valuation Team corroborates this third-party valuation firm’s estimates of fair value using one or more of the valuation techniques discussed below. The Valuation Team’s estimate of value on a specific debt investment may significantly differ from the third-party valuation firm’s. When this occurs, our Valuation Committee and Board of Directors review whether the Valuation Team has followed the Policy and

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the Valuation Committee reviews whether the Valuation Designee’s determined fair value is reasonable in light of the Policy and other relevant facts and circumstances.

We may engage other independent valuation firms to provide earnings multiple ranges, as well as other information, and evaluate such information for incorporation into the total enterprise value (“TEV”) of certain of our investments. Generally, at least once per year, we engage an independent valuation firm to value or review the valuation of each of our significant equity investments, which includes providing the information noted above. The Valuation Team evaluates such information for incorporation into our TEV, including review of all inputs provided by the independent valuation firm. The Valuation Team then presents a determination to our Valuation Committee as to the fair value. Our Valuation Committee reviews the determined fair value and whether it is reasonable in light of the Policy and other relevant facts and circumstances.

Valuation Techniques

In accordance with ASC 820, the Valuation Team uses the following techniques when valuing our investment portfolio:

•Total Enterprise Value — In determining the fair value using a TEV, the Valuation Team first calculates the TEV of the portfolio company by incorporating some or all of the following factors: the portfolio company’s ability to make payments and other specific portfolio company attributes; the earnings of the portfolio company (the trailing or projected twelve month revenue or earnings before interest, taxes, depreciation and amortization (“EBITDA”)); EBITDA multiples obtained from our indexing methodology whereby the original transaction EBITDA multiple at the time of our closing is indexed to a general subset of comparable disclosed transactions and EBITDA multiples from recent sales to third parties of similar securities in similar industries; a comparison to publicly traded securities in similar industries; and other pertinent factors. The Valuation Team generally reviews industry statistics and may use outside experts when gathering this information. Once the TEV is determined for a portfolio company, the Valuation Team generally allocates the TEV to the portfolio company’s securities based on the facts and circumstances of the securities, which typically results in the allocation of fair value to securities based on the order of their relative priority in the capital structure. Generally, the Valuation Team uses TEV to value our equity investments and, in the circumstances where we have the ability to effectuate a sale of a portfolio company, our debt investments.

TEV is primarily calculated using EBITDA and EBITDA multiples; however, TEV may also be calculated using revenue and revenue multiples or a discounted cash flow (“DCF”) analysis whereby future expected cash flows of the portfolio company are discounted to determine a net present value using estimated risk-adjusted discount rates, which incorporate adjustments for nonperformance and liquidity risks.

•Yield Analysis — The Valuation Team generally determines the fair value of our debt investments for which we do not have the ability to effectuate a sale of the applicable portfolio company using the yield analysis, which includes a DCF calculation and assumptions that the Valuation Team believes market participants would use, including: estimated remaining life, current market yield, current leverage, and interest rate spreads. This technique develops a modified discount rate that incorporates risk premiums including, among other things, increased probability of default, increased loss upon default, and increased liquidity risk. Generally, the Valuation Team uses the yield analysis to corroborate both estimates of value provided by a third-party valuation firm and market quotes.

•Market Quotes — For our investments for which a limited market exists, we generally base fair value on readily available and reliable market quotations, which are corroborated by the Valuation Team (generally by using the yield analysis described above). In addition, the Valuation Team assesses trading activity for similar investments and evaluates variances in quotations and other market insights to determine if any available quoted prices are reliable. Typically, the Valuation Team uses the lower indicative bid price in the bid-to-ask price range obtained from the respective originating syndication agent’s trading desk on or near the valuation date. The Valuation Team may take further steps to consider additional information to validate that price in accordance with the Policy. For securities that are publicly traded, we generally base fair value on the closing market price of the securities we hold as of the reporting date. For restricted securities that are publicly traded, we generally base fair value on the closing market price of the securities we hold as of the reporting date less a discount for the restriction, which includes consideration of the nature and term to expiration of the restriction and the lack of marketability of the security.

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•Investments in Funds — For equity investments in other funds for which we cannot effectuate a sale of the fund, the Valuation Team generally determines the fair value of our invested capital at the net asset value (“NAV”) provided by the fund. Any invested capital that is not yet reflected in the NAV provided by the fund is valued at par value. The Valuation Team may also determine fair value of our investments in other investment funds based on the capital accounts of the underlying entity.

In addition to the valuation techniques listed above, the Valuation Team may also consider other factors when determining the fair value of our investments, including: the nature and realizable value of the collateral, including external parties’ guaranties, any relevant offers or letters of intent to acquire the portfolio company, timing of expected loan repayments, and the markets in which the portfolio company operates.

Fair value measurements of our investments may involve subjective judgments and estimates and, due to the uncertainty inherent in valuing these securities, the determinations of fair value may fluctuate from period to period and may differ materially from the values that could be obtained if a ready market for these securities existed. Our NAV could be materially affected if the determinations regarding the fair value of our investments are materially different from the values that we ultimately realize upon our disposal of such securities. Additionally, changes in the market environment and other events that may occur over the life of the investment may cause the gains or losses ultimately realized on these investments to be different than the valuations currently assigned. Further, such investments are generally subject to legal and other restrictions on resale or otherwise are less liquid than publicly traded securities. If we were required to liquidate a portfolio investment in a forced or liquidation sale, we could realize significantly less than the value at which it is recorded.

Refer to Note 3 — Investments for additional information regarding fair value measurements and our application of ASC 820.

Revenue Recognition

Interest Income Recognition

Interest income, adjusted for amortization of premiums, amendment fees and acquisition costs and the accretion of discounts, is recorded on the accrual basis to the extent that such amounts are expected to be collected. Generally, when a loan becomes 90 days or more past due, or if our qualitative assessment indicates that the debtor is unable to service its debt or other obligations, we will place the loan on non-accrual status and cease recognizing interest income on that loan until the borrower has demonstrated the ability and intent to pay contractual amounts due. However, we remain contractually entitled to this interest. Interest payments received on non-accrual loans may be recognized as income or applied to the cost basis, depending upon management’s judgment. Generally, non-accrual loans are restored to accrual status when past-due principal and interest are paid and, in management’s judgment, are likely to remain current, or, due to a restructuring, the interest income is deemed to be collectible. As of December 31, 2023, our loans to Edge Adhesives Holdings, Inc. ("Edge"), J.R. Hobbs Co. – Atlanta, LLC (“J.R. Hobbs”) and The Mountain Corporation (“The Mountain”) were on non-accrual status, with an aggregate debt cost basis of $66.9 million, or 10.0% of the cost basis of all debt investments in our portfolio, and an aggregate fair value of $30.9 million, or 5.0% of the fair value of all debt investments in our portfolio. As of March 31, 2023, our loans to Edge, J.R. Hobbs, and The Mountain were on non-accrual status, with an aggregate debt cost basis of $66.9 million, or 12.0% of the cost basis of all debt investments in our portfolio, and an aggregate fair value of $31.7 million, or 6.2% of the fair value of all debt investments in our portfolio.

Paid-in-kind (“PIK”) interest, computed at the contractual rate specified in the loan agreement, is added to the principal balance of the loan and recorded as interest income. As of December 31, 2023 and March 31, 2023, we did not have any loans with a PIK interest component.

Success Fee Income Recognition

We record success fees as income when earned, which often occurs upon receipt of cash. Success fees are generally contractually due upon a change of control in a portfolio company, typically resulting from an exit or sale, and are non-recurring.

Dividend Income Recognition

We accrue dividend income on preferred and common equity securities to the extent that such amounts are expected to be collected and if we have the option to collect such amounts in cash or other consideration.

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Related Party Fees

We are party to the Advisory Agreement with the Adviser, which is indirectly owned and controlled by our chairman and chief executive officer. In accordance with the Advisory Agreement, we pay the Adviser fees as compensation for its services, consisting of a base management fee and an incentive fee. Additionally, we pay the Adviser a loan servicing fee as compensation for its services as servicer under the terms of the Fifth Amended and Restated Credit Agreement dated April 30, 2013, as amended from time to time (the "Credit Facility").

We are also party to the Administration Agreement with the Administrator, which is indirectly owned and controlled by our chairman and chief executive officer, whereby we pay separately for administrative services.

Refer to Note 4 — Related Party Transactions for additional information regarding these related party fees and agreements.

NOTE 3. INVESTMENTS

Fair Value

In accordance with ASC 820, the fair value of our investments is determined to be the price that would be received for an investment in a current sale, which assumes an orderly transaction between willing market participants on the measurement date. This fair value definition focuses on exit price in the principal, or most advantageous, market and prioritizes, within a measurement of fair value, the use of market-based inputs over entity-specific inputs. ASC 820 also establishes the following three-level hierarchy for fair value measurements based upon the transparency of inputs to the valuation of a financial instrument as of the measurement date.

•Level 1 — inputs to the valuation methodology are quoted prices (unadjusted) for identical financial instruments in active markets;

•Level 2 — inputs to the valuation methodology include quoted prices for similar financial instruments in active or inactive markets, and inputs that are observable for the financial instrument, either directly or indirectly, for substantially the full term of the financial instrument. Level 2 inputs are those in markets for which there are few transactions, the prices are not current, little public information exists, or instances where prices vary substantially over time or among brokered market makers; and

•Level 3 — inputs to the valuation methodology are unobservable and significant to the fair value measurement. Unobservable inputs are those inputs that reflect assumptions that market participants would use when pricing the financial instrument and can include the Valuation Team’s assumptions based upon the best available information.

When a determination is made to classify our investments within Level 3 of the valuation hierarchy, such determination is based upon the significance of the unobservable factors to the overall fair value measurement. However, Level 3 financial instruments typically include, in addition to the unobservable, or Level 3, inputs, observable inputs (or components that are actively quoted and can be validated to external sources). The level in the fair value hierarchy within which the fair value measurement falls is determined based on the lowest level input that is significant to the fair value measurement.

As of December 31, 2023 and March 31, 2023, all of our investments were valued using Level 3 inputs within the ASC 820 fair value hierarchy, except for our investment in Funko Acquisition Holdings, LLC (“Funko”), which was valued using Level 2 inputs.

We transfer investments in and out of Level 1, 2 and 3 of the valuation hierarchy as of the beginning balance sheet date, based on changes in the use of observable and unobservable inputs utilized to perform the valuation for the period. There were no transfers in or out of Level 1, 2 and 3 during the nine months ended December 31, 2023 and 2022, respectively.

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As of December 31, 2023 and March 31, 2023, our investments, by security type, at fair value were categorized as follows within the ASC 820 fair value hierarchy:

			Fair Value Measurements
	Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
As of December 31, 2023:
Secured first lien debt	$	476,126	$	—	$	—		$	476,126
Secured second lien debt	137,480		—		—			137,480
Preferred equity	214,664		—		—			214,664
Common equity/equivalents	74,538		—		22		(A)	74,516
Total Investments as of December 31, 2023	$	902,808	$	—	$	22		$	902,786

			Fair Value Measurements
	Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
As of March 31, 2023:
Secured first lien debt	$	437,517	$	—	$	—		$	437,517
Secured second lien debt	75,734		—		—			75,734
Preferred equity	222,585		—		—			222,585
Common equity/equivalents	17,707		—		27		(A)	17,680
Total Investments as of March 31, 2023	$	753,543	$	—	$	27		$	753,516

(A)Fair value was determined based on the closing market price of shares of Funko, Inc. (our units in Funko can be converted into common shares of Funko, Inc.) at the reporting date less a discount for lack of marketability, as our investment was subject to certain restrictions.

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The following table presents our investments, valued using Level 3 inputs within the ASC 820 fair value hierarchy, and carried at fair value as of December 31, 2023 and March 31, 2023, by caption on our accompanying Consolidated Statements of Assets and Liabilities, and by security type:

	Total Recurring Fair Value Measurements Reported in Consolidated Statements of Assets and Liabilities Valued Using Level 3 Inputs
	December 31, 2023		March 31, 2023
Non-Control/Non-Affiliate Investments
Secured first lien debt	$	324,528	$	279,748
Secured second lien debt	93,340		50,842
Preferred equity	164,241		164,534
Common equity/equivalents(A)	38,207		1,724
Total Non-Control/Non-Affiliate Investments	620,316		496,848
Affiliate Investments
Secured first lien debt	147,354		157,769
Secured second lien debt	44,140		24,892
Preferred equity	50,423		58,051
Common equity/equivalents	36,309		15,243
Total Affiliate Investments	278,226		255,955
Control Investments
Secured first lien debt	4,244		—
Secured second lien debt	—		—
Preferred equity	—		—
Common equity/equivalents	—		713
Total Control Investments	4,244		713
Total investments at fair value using Level 3 inputs	$	902,786	$	753,516

(A)Excludes our investment in Funko with a fair value of $22 thousand and $27 thousand as of December 31, 2023 and March 31, 2023, respectively, which was valued using Level 2 inputs.

In accordance with ASC 820, the following table provides quantitative information about our investments valued using Level 3 fair value measurements as of December 31, 2023 and March 31, 2023. The table below is not intended to be all-inclusive, but rather provides information on the significant Level 3 inputs as they relate to our fair value measurements. The weighted-average calculations in the table below are based on the principal balances for all debt-related calculations and on the cost basis for all equity-related calculations for the particular input.

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	Quantitative Information about Level 3 Fair Value Measurements
	Fair Value as of				Valuation Technique/ Methodology	Unobservable Input	Range / Weighted-Average as of
	December 31, 2023		March 31, 2023				December 31, 2023	March 31, 2023
Secured first lien debt	$	476,126	$	432,126	TEV	EBITDA multiple	4.0x – 9.0x / 6.5x	4.4x – 7.7x / 6.4x
						EBITDA	$1,100–$22,168 / $10,884	$4,251 – $19,083 / $10,764
						Revenue multiple	0.3x – 0.6x / 0.4x	0.3x – 0.6x / 0.3x
						Revenue	$15,332 – $98,136 / $73,695	$15,483 – $109,615 / $94,957
	—		5,391		Yield Analysis	Discount Rate	N/A	19.4% – 19.9% / 19.7%
Secured second lien debt	112,595		62,750		TEV	EBITDA multiple	5.1x – 10.9x /  6.5x	5.4x – 6.6x / 6.2x
						EBITDA	$5,839 – $8,771 / $7,706	$4,112 – $6,379 / $5,501
	24,885		12,984		Yield Analysis	Discount Rate	14.0% – 14.0% / 14.0%	14.0% – 14.0% / 14.0%
Preferred equity	214,664		222,585		TEV	EBITDA multiple	4.0x – 9.0x / 6.1x	4.4x – 7.7x / 5.9x
						EBITDA	$3,135 – $22,168 / $9,974	$4,251 – $19,083 / $9,486
						Revenue multiple	0.3x – 0.6x / 0.4x	0.3x – 0.6x / 0.4x
						Revenue	$15,332 – $98,136 / $56,766	$15,483 – $109,615 / $69,247
Common equity/ equivalents(A)	74,516		17,680		TEV	EBITDA multiple	5.0x – 10.9x / 6.0x	4.7x – 7.2x / 6.4x
						EBITDA	$1,100 – $60,199 / $14,476	$1,105 – $30,833 / $6,273
Total	$	902,786	$	753,516

(A)Fair value as of both December 31, 2023 and March 31, 2023 excludes our investment in Funko with a fair value of $22 thousand and $27 thousand, respectively, which was valued using Level 2 inputs.

Fair value measurements can be sensitive to changes in one or more of the valuation inputs. Changes in discount rates, EBITDA or EBITDA multiples (or revenue or revenue multiples), each in isolation, may change the fair value of certain of our investments. Generally, an increase/(decrease) in discount rates or a (decrease)/increase in EBITDA or EBITDA multiples (or revenue or revenue multiples) may result in a (decrease)/increase in the fair value of certain of our investments.

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Changes in Level 3 Fair Value Measurements of Investments

The following tables provide our portfolio’s changes in fair value, broken out by security type, during the three and nine months ended December 31, 2023 and 2022 for all investments for which the Adviser determines fair value using unobservable (Level 3) inputs.

Fair Value Measurements Using Significant Unobservable Inputs (Level 3)

	Secured First Lien Debt		Secured Second Lien Debt		Preferred Equity		Common Equity/ Equivalents		Total
Three Months ended December 31, 2023:
Fair value as of September 30, 2023	$	508,504	$	102,747	$	267,596	$	36,767	$	915,614
Total gain (loss):
Net realized gain (loss)(A)	—		—		43,459		—		43,459
Net unrealized appreciation (depreciation)(B)	(7,040)		(4,267)		4,911		3,428		(2,968)
Reversal of previously recorded (appreciation) depreciation upon realization(B)	(1,338)		—		(42,228)		—		(43,566)
New investments, repayments and settlements(C):
Issuances / originations	3,500		39,000		—		25,700		68,200
Settlements / repayments	(27,500)		—		—		—		(27,500)
Sales	—		—		(50,453)		—		(50,453)
Transfers(E)	—		—		(8,621)		8,621		—
Fair value as of December 31, 2023	$	476,126	$	137,480	$	214,664	$	74,516	$	902,786

	Secured First Lien Debt		Secured Second Lien Debt		Preferred Equity		Common Equity/ Equivalents		Total
Nine Months Ended December 31, 2023
Fair value as of March 31, 2023	$	437,517	$	75,734	$	222,585	$	17,680	$	753,516
Total gain (loss):
Net realized gain (loss)(A)	—		—		43,732		882		44,614
Net unrealized appreciation (depreciation)(B)	(6,153)		(2,254)		35,234		18,228		45,055
Reversal of previously recorded (appreciation) depreciation upon realization(B)	(1,338)		—		(42,228)		(93)		(43,659)
New investments, repayments and settlements(C):
Issuances / originations	73,600		64,000		14,688		30,700		182,988
Settlements / repayments	(27,500)		—		—		—		(27,500)
Sales(D)	—		—		(50,726)		(1,502)		(52,228)
Transfers(E)	—		—		(8,621)		8,621		—
Fair value as of December 31, 2023	$	476,126	$	137,480	$	214,664	$	74,516	$	902,786

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	Secured First Lien Debt		Secured Second Lien Debt		Preferred Equity		Common Equity/ Equivalents		Total
Three Months ended December 31, 2022:
Fair value as of September 30, 2022	$	420,907	$	76,751	$	229,430	$	10,789	$	737,877
Total gain (loss):
Net realized gain (loss)(A)	—		(10,000)		13,372		—		3,372
Net unrealized appreciation (depreciation)(B)	(2,516)		(266)		(7,656)		3,829		(6,609)
Reversal of previously recorded (appreciation) depreciation upon realization(B)	—		10,001		—		—		10,001
New investments, repayments and settlements(C):
Issuances / originations	29,900		1,183		—		380		31,463
Settlements / repayments	(800)		(1,500)		—		—		(2,300)
Sales(D)	—		—		(13,372)		—		(13,372)
Transfers	—		—		—		—		—
Fair value as of December 31, 2022	$	447,491	$	76,169	$	221,774	$	14,998	$	760,432

	Secured First Lien Debt		Secured Second Lien Debt		Preferred Equity		Common Equity/ Equivalents		Total
Nine Months Ended December 31, 2022:
Fair value as of March 31, 2022	$	425,087	$	67,958	$	217,599	$	3,678	$	714,322
Total gain (loss):
Net realized gain (loss)(A)	—		(10,000)		20,318		—		10,318
Net unrealized appreciation (depreciation)(B)	(21,328)		(4,800)		10,405		10,940		(4,783)
Reversal of previously recorded (appreciation) depreciation upon realization(B)	—		10,001		(12,250)		—		(2,249)
New investments, repayments and settlements(C):
Issuances / originations	106,950		5,188		21,000		380		133,518
Settlements / repayments	(48,800)		(6,596)		—		—		(55,396)
Sales(D)	—		—		(35,298)		—		(35,298)
Transfers(E)	(14,418)		14,418		—		—		—
Fair value as of December 31, 2022	$	447,491	$	76,169	$	221,774	$	14,998	$	760,432

(A)Included in net realized gain (loss) on investments on our accompanying Consolidated Statements of Operations for the respective periods ended December 31, 2023 and 2022.

(B)Included in net unrealized appreciation (depreciation) of investments on our accompanying Consolidated Statements of Operations for the respective periods ended December 31, 2023 and 2022.

(C)Includes increases in the cost basis of investments resulting from new portfolio investments, the amortization of discounts and other non-cash disbursements to portfolio companies, as well as decreases in the cost basis of investments resulting from principal repayments or sales, the amortization of premiums and acquisition costs, and other cost-basis adjustments.

(D)The nine months ended December 31, 2023 includes $0.3 million of proceeds from the recapitalization of Old World Christmas, Inc. ("Old World"). The three and nine months ended December 31, 2022 include $13.4 million of proceeds from the recapitalization of Old World. The nine months ended December 31, 2022 also includes $12.3 million return of equity cost basis from Horizon Facilities Services, Inc.

(E)2023: Transfers represent preferred equity of SFEG Holdings, Inc. ("SFEG") with a total cost basis and fair value of $4.8 million and $8.6 million, respectively, which was converted to common equity in October 2023.

2022: Transfers represent (1) secured second lien debt of Ginsey Home Solutions, Inc. with a total cost basis and fair value of $12.2 million, which was converted into secured first lien debt in August 2022 and (2) secured first lien debt of PSI Molded Plastics, Inc. with a total cost basis and fair value of $26.6 million, which was converted into secured second lien debt in September 2022.

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Investment Activity

During the nine months ended December 31, 2023, the following significant transactions occurred:

•In May 2023, we invested $15.3 million in a new portfolio company, Home Concepts Acquisition, Inc. ("Home Concepts"), in the form of $12.0 million of secured first lien debt and $3.3 million of preferred equity. Home Concepts, headquartered in Santa Barbara, California, is a leading home improvement advertising publication focusing on connecting homeowners to high-quality residential repair and remodeling businesses.

•In June 2023, we recapitalized our existing investment in Old World and invested an additional $2.5 million in the form of secured first lien debt. In connection with this investment, we received proceeds of $2.2 million, of which $1.9 million was recognized as dividend income and $0.3 million was recognized as a realized gain.

•In June 2023, we invested an additional $30.0 million in the form of $25.0 million of secured second lien debt and $5.0 million of common equity in Nth Degree Investment Group, LLC to fund an add-on acquisition.

•In June 2023, we received a $1.5 million escrow settlement in connection with our December 2021 exit of SOG Specialty Knives & Tools, LLC, of which $0.6 million was recognized as a return of cost basis and $0.9 million as a realized gain. As a result of the escrow release, there are no remaining assets held by Gladstone SOG Investments, Inc.

•In August 2023, we invested an additional $18.7 million in the form of secured first lien debt in Nocturne Villa Rentals, Inc. ("Nocturne") to fund an add-on acquisition.

•In September 2023, we invested $46.0 million in a new portfolio company, The E3 Company, LLC ("E3"), in the form of $34.8 million of secured first lien debt and $11.2 million of preferred equity. E3, headquartered in Kilgore, Texas, is a market leader in advanced pressure management solutions for oil and gas well completions.

•In October 2023, we invested an additional $64.7 million in the form of $39.0 million of secured second lien debt and $25.7 million of common equity in SFEG to fund an add-on acquisition. In connection with the investment, our existing preferred equity with a cost basis of $4.8 million was converted to common equity.

•In October 2023, we exited our investment in Counsel Press, Inc., which resulted in success fee income of $1.4 million, a realized gain of $43.5 million and the repayment of our debt investment of $27.5 million at par.

Investment Concentrations

As of December 31, 2023, our investment portfolio consisted of investments in 25 portfolio companies located in 18 states across 16 different industries with an aggregate fair value of $902.8 million. Our investments in SFEG, Nocturne, Old World, Brunswick Bowling Products, Inc. and Dema/Mai Holdings, Inc. represented our five largest portfolio investments at fair value and collectively comprised $380.9 million, or 42.2%, of our total investment portfolio at fair value as of December 31, 2023.

The following table summarizes our investments by security type as of December 31, 2023 and March 31, 2023:

	December 31, 2023								March 31, 2023
	Cost				Fair Value				Cost				Fair Value
Secured first lien debt	$	517,539	59.6	%	$	476,126	52.7	%	$	471,439	65.4	%	$	437,517	58.1	%
Secured second lien debt	148,158		17.0	%	137,480		15.2	%	84,158		11.7	%	75,734		10.1	%
Total debt	665,697		76.6	%	613,606		67.9	%	555,597		77.1	%	513,251		68.2	%
Preferred equity	151,969		17.5	%	214,664		23.8	%	149,099		20.7	%	222,585		29.5	%
Common equity/equivalents	50,838		5.9	%	74,538		8.3	%	15,934		2.2	%	17,707		2.3	%
Total equity/equivalents	202,807		23.4	%	289,202		32.1	%	165,033		22.9	%	240,292		31.8	%
Total investments	$	868,504	100.0	%	$	902,808	100.0	%	$	720,630	100.0	%	$	753,543	100.0	%

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Investments at fair value consisted of the following industry classifications as of December 31, 2023 and March 31, 2023:

	December 31, 2023				March 31, 2023
	Fair Value		Percentage of Total Investments		Fair Value		Percentage of Total Investments
Diversified/Conglomerate Services	$	255,141	28.3	%	$	268,954	35.7	%
Home and Office Furnishings, Housewares, and Durable Consumer Products	155,897		17.3	%	143,685		19.1	%
Machinery (Non-Agriculture, Non-Construction, and Non-Electronic)	92,293		10.2	%	20,088		2.7	%
Hotels, Motels, Inns, and Gaming	80,557		8.9	%	58,713		7.8	%
Buildings and Real Estate	64,352		7.1	%	60,571		8.0	%
Healthcare, Education, and Childcare	50,237		5.6	%	37,445		5.0	%
Oil and Gas	45,983		5.1	%	—		—	%
Leisure, Amusement, Motion Pictures, and Entertainment	38,356		4.2	%	47,616		6.3	%
Mining, Steel, Iron and Non-Precious Metals	27,831		3.1	%	25,998		3.5	%
Aerospace and Defense	25,754		2.9	%	22,215		2.8	%
Chemicals, Plastics, and Rubber	19,256		2.1	%	24,891		3.3	%
Printing and Publishing	15,210		1.7	%	—		—	%
Cargo Transport	13,500		1.5	%	14,707		2.0	%
Telecommunications	8,881		1.0	%	18,987		2.5	%
Other < 2.0%	9,560		1.0	%	9,673		1.3	%
Total investments	$	902,808	100.0	%	$	753,543	100.0	%

Investments at fair value were included in the following geographic regions of the U.S. as of December 31, 2023 and March 31, 2023:

	December 31, 2023				March 31, 2023
Location	Fair Value		Percentage of Total Investments		Fair Value		Percentage of Total Investments
South	$	326,849	36.2	%	$	171,056	22.7	%
West	228,407		25.3	%	197,989		26.3	%
Northeast	213,403		23.6	%	266,612		35.4	%
Midwest	134,149		14.9	%	117,886		15.6	%
Total investments	$	902,808	100.0	%	$	753,543	100.0	%

The geographic region indicates the location of the headquarters for our portfolio companies. A portfolio company may have additional business locations in other geographic regions.

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Investment Principal Repayments

The following table summarizes the contractual principal repayment and maturity of our investment portfolio by fiscal year, assuming no voluntary prepayments, as of December 31, 2023:

		Amount
For the remaining three months ending March 31, 2024		$	33,918
For the fiscal years ending March 31:
	2025	100,470
	2026	204,919
	2027	162,746
	2028	38,250
	Thereafter	125,394
	Total contractual repayments	$	665,697
	Investments in equity securities	202,807
	Total cost basis of investments held as of December 31, 2023:	$	868,504

Receivables from Portfolio Companies

Receivables from portfolio companies represent non-recurring costs that we incurred on behalf of portfolio companies. Such receivables, net of any allowance for uncollectible receivables, are included in Other assets, net on our accompanying Consolidated Statements of Assets and Liabilities. We generally maintain an allowance for uncollectible receivables from portfolio companies when the receivable balance becomes 90 days or more past due or if it is determined, based upon management’s judgment, that the portfolio company is unable to pay its obligations. We write off accounts receivable when we have exhausted collection efforts and have deemed the receivables uncollectible. As of December 31, 2023 and March 31, 2023, we had gross receivables from portfolio companies of $2.3 million and $2.2 million, respectively. As of both December 31, 2023 and March 31, 2023, the allowance for uncollectible receivables was $1.6 million.

NOTE 4. RELATED PARTY TRANSACTIONS

Transactions with the Adviser

We pay the Adviser certain fees as compensation for its services under the Advisory Agreement, consisting of a base management fee and an incentive fee and a loan servicing fee for the Adviser’s role as servicer pursuant to the Credit Facility, all as described below. On July 11, 2023, our Board of Directors, including a majority of the directors who are not parties to the Advisory Agreement or interested persons of either party, approved the annual renewal of the Advisory Agreement through August 31, 2024.

Two of our executive officers, David Gladstone (our chairman and chief executive officer) and Terry Lee Brubaker (our chief operating officer) serve as directors and executive officers of the Adviser, which is 100% indirectly owned and controlled by Mr. Gladstone. David Dullum (our president) is also the executive vice president of private equity (buyouts) of the Adviser. Michael LiCalsi, our general counsel and secretary (who also serves as the Administrator’s president, general counsel and secretary), is also the executive vice president of administration, general counsel, and secretary of our Adviser.

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The following table summarizes the base management fees, loan servicing fees, incentive fees, and associated non-contractual, unconditional, and irrevocable credits reflected in our accompanying Consolidated Statements of Operations:

	Three Months Ended December 31,						Nine Months Ended December 31,
	2023			2022			2023			2022
Average total assets subject to base management fee(A)	$	920,400		$	757,800		$	858,267		$	731,000
Multiplied by prorated annual base management fee of 2.0%	0.5		%	0.5		%	1.5		%	1.5		%
Base management fee(B)	4,602			3,789			12,874			10,965
Credits to fees from Adviser - other(B)	(1,793)			(756)			(5,117)			(3,131)
Net base management fee	$	2,809		$	3,033		$	7,757		$	7,834
Loan servicing fee(B)	2,332			2,080			6,829			5,754
Credits to base management fee - loan servicing fee(B)	(2,332)			(2,080)			(6,829)			(5,754)
Net loan servicing fee	$	—		$	—		$	—		$	—
Incentive fee – income-based	$	2,282		$	2,503		$	6,142		$	7,016
Incentive fee – capital gains-based(C)	(615)			1,442			9,259			706
Total incentive fee(B)	$	1,667		$	3,945		$	15,401		$	7,722
Credits to fees from Adviser - other(B)	—			—			—			—
Net total incentive fee	$	1,667		$	3,945		$	15,401		$	7,722

(A)Average total assets subject to the base management fee is defined in the Advisory Agreement as total assets, including investments made with proceeds of borrowings, less any uninvested cash or cash equivalents resulting from borrowings, valued at the end of the applicable quarters within the respective periods and adjusted appropriately for any share issuances or repurchases during the periods.

(B)Reflected as a line item on our accompanying Consolidated Statements of Operations.

(C)The capital gains-based incentive fees are recorded in accordance with GAAP and do not necessarily reflect amounts contractually due under the terms of the Advisory Agreement.

Base Management Fee

The base management fee is payable quarterly to the Adviser pursuant to our Advisory Agreement and is assessed at an annual rate of 2.0%, computed on the basis of the value of our average gross assets at the end of the two most recently completed quarters (inclusive of the current quarter), which are total assets, including investments made with proceeds of borrowings, less any uninvested cash or cash equivalents resulting from borrowings, valued at the end of the applicable quarters within the respective period and adjusted appropriately for any share issuances or repurchases during the period.

Additionally, pursuant to the requirements of the 1940 Act, the Adviser makes available significant managerial assistance to our portfolio companies. The Adviser may also provide other services to our portfolio companies under certain agreements and may receive fees for services other than managerial assistance. Such services may include: (i) assistance obtaining, sourcing or structuring credit facilities, long term loans or additional equity from unaffiliated third parties; (ii) negotiating important contractual financial relationships; (iii) consulting services regarding restructuring of the portfolio company and financial modeling as it relates to raising additional debt and equity capital from unaffiliated third parties; and (iv) taking a primary role in interviewing, vetting and negotiating employment contracts with candidates in connection with adding and retaining key portfolio company management team members. The Adviser non-contractually, unconditionally, and irrevocably credits 100% of any fees received for such services against the base management fee that we would otherwise be required to pay to the Adviser; however, pursuant to the terms of the Advisory Agreement, a small percentage of certain of such fees was retained by the Adviser in the form of reimbursement, at cost, for tasks completed by personnel of the Adviser, primarily related to the valuation of portfolio companies. For the three months ended December 31, 2023 and 2022, these credits totaled $57 thousand and $40 thousand, respectively. For the nine months ended December 31, 2023 and 2022, these credits totaled $215 thousand and $146 thousand, respectively.

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Loan Servicing Fee

The Adviser also services the loans held by our wholly-owned subsidiary, Business Investment (the borrower under the Credit Facility), in return for which the Adviser receives a 2.0% annual fee based on the monthly aggregate outstanding balance of loans pledged under the Credit Facility. Since Business Investment is a consolidated subsidiary of ours, coupled with the fact that the total base management fee paid to the Adviser pursuant to the Advisory Agreement cannot exceed 2.0% of total assets (less any uninvested cash or cash equivalents resulting from borrowings) during any given calendar year, we treat payment of the loan servicing fee pursuant to the Credit Facility as a pre-payment of the base management fee under the Advisory Agreement. Accordingly, these loan servicing fees are 100% non-contractually, unconditionally, and irrevocably credited back to us by the Adviser.

Incentive Fee

The incentive fee payable to the Adviser under our Advisory Agreement consists of two parts: an income-based incentive fee and a capital gains-based incentive fee.

The income-based incentive fee rewards the Adviser if our quarterly net investment income (before giving effect to any incentive fee) exceeds 1.75% of our net assets, which we define as total assets less indebtedness and before taking into account any incentive fees payable or contractually due but not payable during the period, at the end of the immediately preceding calendar quarter, adjusted appropriately for any share issuances or repurchases during the period (the “Hurdle Rate”). The income-based incentive fee with respect to our pre-incentive fee net investment income is payable quarterly to the Adviser and is computed as follows:

•No incentive fee in any calendar quarter in which our pre-incentive fee net investment income does not exceed the Hurdle Rate;

•100.0% of our pre-incentive fee net investment income with respect to that portion of such pre-incentive fee net investment income, if any, that exceeds the Hurdle Rate but is less than 2.1875% of our net assets, adjusted appropriately for any share issuances or repurchases during the period, in any calendar quarter; and

•20.0% of the amount of our pre-incentive fee net investment income, if any, that exceeds 2.1875% of our net assets, adjusted appropriately for any share issuances or repurchases during the period, in any calendar quarter.

The second part of the incentive fee is a capital gains-based incentive fee that is determined and payable in arrears as of the end of each fiscal year (or upon termination of the Advisory Agreement, as of the termination date), and equals 20.0% of our realized capital gains, less any realized capital losses and unrealized depreciation, calculated as of the end of the preceding calendar year. The capital gains-based incentive fee payable to the Adviser is calculated based on (i) cumulative aggregate realized capital gains since our inception, less (ii) cumulative aggregate realized capital losses since our inception, less (iii) the entire portfolio’s aggregate unrealized capital depreciation, if any, as of the date of the calculation. If this number is positive at the applicable calculation date, then the capital gains-based incentive fee for such year equals 20.0% of such amount, less the aggregate amount of any capital gains-based incentive fees paid in respect of our portfolio in all prior years. For calculation purposes, cumulative aggregate realized capital gains, if any, equals the sum of the excess between the net sales price of each investment, when sold, and the original cost of such investment since our inception. Cumulative aggregate realized capital losses equals the sum of the deficit between the net sales price of each investment, when sold, and the original cost of such investment since our inception. The entire portfolio’s aggregate unrealized capital depreciation, if any, equals the sum of the deficit between the fair value of each investment security as of the applicable calculation date and the original cost of such investment security. As of December 31, 2023, $1.1 million of capital gains-based incentive fees were determined to be contractually due to the Adviser. During the year ended March 31, 2023, no capital gains-based incentive fees were contractually due and paid to the Adviser.

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In accordance with GAAP, accrual of the capital gains-based incentive fee is determined as if our investments had been liquidated at their fair values as of the end of the reporting period. Therefore, GAAP requires that the capital gains-based incentive fee accrual consider the aggregate unrealized capital appreciation in the calculation, as a capital gains-based incentive fee would be payable if such unrealized capital appreciation were realized. There can be no assurance that any such unrealized capital appreciation will be realized in the future. Accordingly, a GAAP accrual is calculated at the end of the reporting period based on (i) cumulative aggregate realized capital gains since our inception, plus (ii) the entire portfolio’s aggregate unrealized capital appreciation, if any, less (iii) cumulative aggregate realized capital losses since our inception, less (iv) the entire portfolio’s aggregate unrealized capital depreciation, if any. If such amount is positive at the end of a reporting period, a capital gains-based incentive fee equal to 20.0% of such amount, less the aggregate amount of capital gains-based incentive fees accrued in all prior years, is recorded, regardless of whether such amount is contractually due under the terms of the Advisory Agreement. If such amount is negative, then there is no accrual for such period and prior period accruals are reversed, as appropriate. During the three and nine months ended December 31, 2023, we recorded a reversal of capital gains-based incentive fees of $0.6 million and an accrual of capital gains-based incentive fees of $9.3 million, respectively. During the three and nine months ended December 31, 2022, we recorded capital gains-based incentive fees of $1.4 million and $0.7 million, respectively.

Transactions with the Administrator

We reimburse the Administrator pursuant to the Administration Agreement for our allocable portion of the Administrator’s expenses incurred while performing services to us, which are primarily rent and salaries and benefits expenses of the Administrator’s employees, including our chief financial officer and treasurer, chief valuation officer, chief compliance officer, and general counsel and secretary, and their respective staffs. Two of our executive officers, David Gladstone (our chairman and chief executive officer) and Terry Lee Brubaker (our chief operating officer) serve as members of the board of managers and executive officers of the Administrator, which is 100% indirectly owned and controlled by Mr. Gladstone. Another of our officers, Mr. LiCalsi (our general counsel and secretary), serves as the Administrator’s president as well as the executive vice president of administration, general counsel, and secretary for the Adviser.

Our allocable portion of the Administrator’s expenses is generally derived by multiplying the Administrator’s total expenses by the approximate percentage of time during the current quarter the Administrator’s employees performed services for us in relation to their time spent performing services for all companies serviced by the Administrator. On July 11, 2023, our Board of Directors, including a majority of the directors who are not parties to the Administration Agreement or interested persons of either party, approved the annual renewal of the Administration Agreement through August 31, 2024. Administration fees for the three and nine months ended December 31, 2023 were $0.5 million and $1.3 million, respectively. Administration fees for the three and nine months ended December 31, 2022 were $0.4 million and $1.4 million, respectively.

Transactions with Gladstone Securities, LLC

Gladstone Securities, LLC (“Gladstone Securities”) is a privately held broker dealer registered with the Financial Industry Regulatory Authority and insured by the Securities Investor Protection Corporation. Gladstone Securities is an affiliate of ours, as its parent company is 100% indirectly owned and controlled by David Gladstone, our chairman and chief executive officer. Mr. Gladstone also serves on the board of managers of Gladstone Securities.

Other Transactions

From time to time, Gladstone Securities provides services, such as investment banking and due diligence services, to certain of our portfolio companies, for which it receives a fee. Any such fees paid by portfolio companies to Gladstone Securities do not impact the fees we pay to the Adviser or the non-contractual, unconditional, and irrevocable credits against the base management fee. No fees were received by Gladstone Securities from our portfolio companies during the three months ended December 31, 2023. During the nine months ended December 31, 2023, the fees received by Gladstone Securities from our portfolio companies totaled $0.3 million. During the three and nine months ended December 31, 2022, the fees received by Gladstone Securities from our portfolio companies totaled $0.3 million and $1.6 million, respectively.

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Related Party Fees Due

Amounts due to related parties on our accompanying Consolidated Statements of Assets and Liabilities were as follows:

	As of December 31,		As of March 31,
	2023		2023
Base management and loan servicing fee due to Adviser, net of credits	$	1,006	$	1,574
Incentive fee due to Adviser(A)	36,640		27,259
Other due to Adviser	47		86
Total fees due to Adviser	37,693		28,919
Fee due to Administrator	575		716
Total related party fees due	$	38,268	$	29,635

(A)Includes a capital gains-based incentive fee of $34.4 million and $25.1 million as of December 31, 2023 and March 31, 2023, respectively, recorded in accordance with GAAP requirements, and which was not contractually due under the terms of the Advisory Agreement. Refer to Note 4 — Related Party Transactions — Transactions with the Adviser — Incentive Fee for additional information, including capital gains-based incentive fee payments made.

Co-investment expenses as of December 31, 2023 were $22 thousand. There were no co-investment expenses as of March 31, 2023. These amounts are generally settled in the quarter subsequent to being incurred and have been included in Other assets, net on the accompanying Consolidated Statements of Assets and Liabilities.

NOTE 5. BORROWINGS

Revolving Line of Credit

On October 30, 2023, we, through our wholly-owned subsidiary, Business Investment, entered into Amendment No. 8 to the Credit Facility with KeyBank National Association ("KeyBank") as administrative agent, lead arranger, managing agent and lender, the Adviser, as servicer, and certain other lenders party thereto. Among other things, the revolving period was extended to October 30, 2026, and if not renewed or extended by such date, all principal and interest will be due and payable by October 30, 2028 (two years after the revolving period end date). Advances under the Credit Facility generally bear interest at 30-day Term SOFR, subject to a floor of 0.35%, plus 3.15% per annum until October 30, 2026, with the margin then increasing to 3.40% for the period from October 30, 2026 to October 30, 2027, and increasing further to 3.65% thereafter with a SOFR credit spread adjustment of 10 basis points. The Credit Facility has an unused commitment fee on the daily unused commitment amount of 0.50% per annum if the daily unused commitment amount is less than or equal to 50% of the total commitment amount, 0.75% per annum if the daily unused commitment amount is greater than 50% but less than or equal to 65% of the total commitment amount, and 1.00% per annum if the daily unused commitment amount is greater than 65% of the total commitment amount. The size of the Credit Facility was reduced from $180.0 million to $135.0 million.

On April 10, 2023, we, through our wholly-owned subsidiary, Business Investment, entered into Amendment No. 7 to the Credit Facility with KeyBank as administrative agent, lead arranger, managing agent and lender, the Adviser, as servicer, and certain other lenders party thereto. The reference rate was updated from LIBOR to Term SOFR plus an 11 basis point credit spread adjustment.

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The following tables summarize noteworthy information related to the Credit Facility:

	As of December 31, 2023		As of March 31, 2023
Commitment amount	$	135,000	$	180,000
Borrowings outstanding at cost	$	82,600	$	35,200
Availability(A)	$	52,400	$	144,800

	For the Three Months Ended December 31,						For the Nine Months Ended December 31,
	2023			2022			2023			2022
Weighted-average borrowings outstanding	$	77,359		$	26,054		$	57,135		$	12,621
Effective interest rate(B)	9.2		%	12.8		%	10.2		%	19.8		%
Commitment (unused) fees incurred	$	113		$	394		$	777		$	1,279

(A)Availability is subject to various constraints, characteristics and applicable advance rates based on collateral quality under the Credit Facility, which equated to an adjusted availability of $52.4 million and $144.8 million as of December 31, 2023 and March 31, 2023, respectively.

(B)Excludes the impact of deferred financing costs and includes unused commitment fees.

Among other things, the Credit Facility contains a performance guaranty that requires us to maintain: (i) a minimum net worth of the greater of $210.0 million or $210.0 million plus 50% of all equity and subordinated debt raised, minus 50% of any equity or subordinated debt redeemed or retired after November 16, 2016, which equated to $339.0 million as of December 31, 2023; (ii) asset coverage with respect to senior securities representing indebtedness of at least 150% (or such percentage as may be set forth in Section 18 of the 1940 Act, as modified by Section 61 of the 1940 Act); and (iii) our status as a BDC under the 1940 Act and as a RIC under the Code. As of December 31, 2023, and as defined in the performance guaranty of the Credit Facility, we had a net worth of $789.8 million, asset coverage on our senior securities representing indebtedness of 206.9%, calculated in compliance with the requirements of Sections 18 and 61 of the 1940 Act, and an active status as a BDC and RIC. As of December 31, 2023, we were in compliance with all covenants under the Credit Facility.

Fair Value

We elected to apply the fair value option of ASC Topic 825, “Financial Instruments,” to the Credit Facility, which was consistent with our application of ASC 820 to our investments. Generally, the fair value of the Credit Facility is determined using a yield analysis, which includes a DCF calculation and also takes into account the assumptions the Valuation Team believes market participants would use, including the estimated remaining life, counterparty credit risk, current market yield and interest rate spreads of similar securities as of the measurement date. As of December 31, 2023, the discount rate used to determine the fair value of the Credit Facility was 30-day Term SOFR, with a 0.35% floor, plus 3.25% per annum, plus an unused commitment fee of 0.50%. As of March 31, 2023, the discount rate used to determine the fair value of the Credit Facility was 30-day LIBOR, with a 0.5% floor, plus 2.94% per annum, plus an unused commitment fee of 1.0%. Generally, an increase or decrease in the discount rate used in the DCF calculation may result in a corresponding decrease or increase, respectively, in the fair value of the Credit Facility. As of each of December 31, 2023 and March 31, 2023, the Credit Facility was valued using Level 3 inputs and any changes in its fair value are recorded in Net unrealized appreciation (depreciation) of other on our accompanying Consolidated Statements of Operations.

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The following tables provide relevant information and disclosures about the Credit Facility as of December 31, 2023 and March 31, 2023, and for the three and nine months ended December 31, 2023 and 2022, as required by ASC 820:

	Level 3 – Borrowings
	Recurring Fair Value Measurements Reported in Consolidated Statements of Assets and Liabilities Using Significant Unobservable Inputs (Level 3)
	December 31, 2023		March 31, 2023
Credit Facility	$	82,600	$	35,171

Fair Value Measurements of Borrowings Using Significant Unobservable Inputs (Level 3)  Reported in Consolidated Statements of Assets and Liabilities
	Credit Facility
Three Months Ended December 31, 2023:
Fair value at September 30, 2023	$	79,208
Borrowings	104,900
Repayments	(101,600)
Unrealized appreciation	92
Fair value at December 31, 2023	$	82,600
Nine Months Ended December 31, 2023:
Fair value at March 31, 2023	$	35,171
Borrowings	231,900
Repayments	(184,500)
Unrealized appreciation	29
Fair value at December 31, 2023	$	82,600

Fair Value Measurements of Borrowings Using Significant Unobservable Inputs (Level 3) Reported in Consolidated Statements of Assets and Liabilities
	Credit Facility
Three Months Ended December 31, 2022:
Fair value at September 30, 2022	$	16,600
Borrowings	41,400
Repayments	(28,400)
Unrealized appreciation (depreciation)	—
Fair value at December 31, 2022	$	29,600
Nine Months Ended December 31, 2022
Fair value at March 31, 2022	$	—
Borrowings	82,900
Repayments	(53,300)
Unrealized appreciation (depreciation)	—
Fair value at December 31, 2022	$	29,600

The fair value of the collateral under the Credit Facility was $702.9 million and $639.5 million as of December 31, 2023 and March 31, 2023, respectively.

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Notes Payable

5.00% Notes due 2026

In March 2021, we completed a public offering of 5.00% Notes due 2026 with an aggregate principal amount of $127.9 million (the “5.00% 2026 Notes”), which resulted in net proceeds of approximately $123.8 million after deducting underwriting discounts, commissions and offering costs borne by us. The 5.00% 2026 Notes are traded under the ticker symbol “GAINN” on the Nasdaq Global Select Market (“Nasdaq”). The 5.00% 2026 Notes will mature on May 1, 2026 and may be redeemed in whole or in part at any time or from time to time at the Company’s option. The 5.00% 2026 Notes bear interest at a rate of 5.00% per year, which is payable quarterly in arrears.

The indenture relating to the 5.00% 2026 Notes contains certain covenants, including (i) an inability to incur additional debt or issue additional debt or preferred securities unless the Company’s asset coverage meets the threshold specified in the 1940 Act after such borrowing, (ii) an inability to declare any dividend or distribution (except a dividend payable in our stock) on a class of our capital stock or to purchase shares of our capital stock unless the Company’s asset coverage meets the threshold specified in the 1940 Act at the time of (and giving effect to) such declaration or purchase, and (iii) if, at any time, we are not subject to the reporting requirements of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), we will provide the holders of the 5.00% 2026 Notes and the trustee with audited annual consolidated financial statements and unaudited interim consolidated financial statements.

The 5.00% 2026 Notes are recorded at the aggregate principal amount, less underwriting discounts, commissions, and offering costs, on our accompanying Consolidated Statements of Assets and Liabilities. Total underwriting discounts, commissions, and offering costs related to this offering were $4.1 million, which have been recorded as discounts to the aggregate principal amount on our accompanying Consolidated Statements of Assets and Liabilities and are being amortized over the period ending May 1, 2026, the maturity date.

4.875% Notes due 2028

In August 2021, we completed a public offering of 4.875% Notes due 2028 with an aggregate principal amount of $134.6 million (the “4.875% 2028 Notes”), which resulted in net proceeds of approximately $131.3 million after deducting underwriting discounts, commissions and offering costs borne by us. The 4.875% 2028 Notes are traded under the ticker symbol “GAINZ” on Nasdaq. The 4.875% 2028 Notes will mature on November 1, 2028 and may be redeemed in whole or in part at any time or from time to time at the Company’s option. The 4.875% 2028 Notes bear interest at a rate of 4.875% per year, which is payable quarterly in arrears.

The indenture relating to the 4.875% 2028 Notes contains certain covenants, including (i) an inability to incur additional debt or issue additional debt or preferred securities unless the Company’s asset coverage meets the threshold specified in the 1940 Act after such borrowing, (ii) an inability to declare any dividend or distribution (except a dividend payable in our stock) on a class of our capital stock or to purchase shares of our capital stock unless the Company’s asset coverage meets the threshold specified in the 1940 Act at the time of (and giving effect to) such declaration or purchase, and (iii) if, at any time, we are not subject to the reporting requirements of the Exchange Act, we will provide the holders of the 4.875% 2028 Notes and the trustee with audited annual consolidated financial statements and unaudited interim consolidated financial statements.

The 4.875% 2028 Notes are recorded at the aggregate principal amount, less underwriting discounts, commissions, and offering costs, on our accompanying Consolidated Statements of Assets and Liabilities. Total underwriting discounts, commissions, and offering costs related to this offering were $3.3 million, which have been recorded as discounts to the aggregate principal amount on our accompanying Consolidated Statements of Assets and Liabilities and are being amortized over the period ending November 1, 2028, the maturity date.

8.00% Notes due 2028

In May 2023, we completed a public offering of 8.00% Notes due 2028 with an aggregate principal amount of $74.8 million (the “8.00% 2028 Notes”), which resulted in net proceeds of approximately $72.3 million after deducting underwriting discounts, commissions and offering costs borne by us. The 8.00% 2028 Notes are traded under the ticker symbol “GAINL” on Nasdaq. The 8.00% 2028 Notes will mature on August 1, 2028 and may be redeemed in whole or in part at any time or from time to time at the Company’s option on or after August 1, 2025. The 8.00% 2028 Notes bear interest at a rate of 8.00% per year, which is payable quarterly in arrears.

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The indenture relating to the 8.00% 2028 Notes contains certain covenants, including (i) an inability to incur additional debt or issue additional debt or preferred securities unless the Company’s asset coverage meets the threshold specified in the 1940 Act after such borrowing, (ii) an inability to declare any dividend or distribution (except a dividend payable in our stock) on a class of our capital stock or to purchase shares of our capital stock unless the Company’s asset coverage meets the threshold specified in the 1940 Act at the time of (and giving effect to) such declaration or purchase, and (iii) if, at any time, we are not subject to the reporting requirements of the Exchange Act, we will provide the holders of the 8.00% 2028 Notes and the trustee with audited annual consolidated financial statements and unaudited interim consolidated financial statements.

The 8.00% 2028 Notes are recorded at the aggregate principal amount, less underwriting discounts, commissions, and offering costs, on our accompanying Consolidated Statements of Assets and Liabilities. Total underwriting discounts, commissions, and offering costs related to this offering were $2.5 million, which have been recorded as discounts to the aggregate principal amount on our accompanying Consolidated Statements of Assets and Liabilities and are being amortized over the period ending August 1, 2028, the maturity date.

The following tables summarize our 5.00% 2026 Notes, 4.875% 2028 Notes and 8.00% 2028 Notes as of December 31, 2023 and March 31, 2023:

As of December 31, 2023:
Description	Ticker Symbol	Date Issued	Maturity Date(A)	Interest Rate	Notes Outstanding	Principal Amount per Note		Aggregate Principal Amount
5.00% 2026 Notes	GAINN	March 2, 2021	May 1, 2026	5.00%	5,117,500	$	25.00	$	127,938
4.875% 2028 Notes	GAINZ	August 18, 2021	November 1, 2028	4.875%	5,382,000	$	25.00	134,550
8.00% 2028 Notes	GAINL	May 31, 2023	August 1, 2028	8.00%	2,990,000	$	25.00	74,750
Notes payable, gross(B)					13,489,500			337,238
Less: Unamortized Discounts								(6,334)
Notes payable, net(C)								$	330,904

As of March 31, 2023:
Description	Ticker Symbol	Date Issued	Maturity Date(A)	Interest Rate	Notes Outstanding	Principal Amount per Note		Aggregate Principal Amount
5.00% 2026 Notes	GAINN	March 2, 2021	May 1, 2026	5.00%	5,117,500	$	25.00	$	127,938
4.875% 2028 Notes	GAINZ	August 18, 2021	November 1, 2028	4.875%	5,382,000	$	25.00	134,550
Notes payable, gross(B)					10,499,500			262,488
Less: Unamortized Discounts								(5,052)
Notes payable, net(C)								$	257,436

(A)The 5.00% 2026 Notes and the 4.875% 2028 Notes can be redeemed at our option at any time. The 8.00% 2028 Notes can be redeemed at our option at any time on or after August 1, 2025.

(B)As of December 31, 2023 and March 31, 2023, asset coverage on our senior securities representing indebtedness, calculated pursuant to Sections 18 and 61 of the 1940 Act, was 206.9% and 244.7%, respectively.

(C)Reflected as a line item on our accompanying Consolidated Statements of Assets and Liabilities.

The fair value, based on the last reported closing prices, of the 5.00% 2026 Notes, 4.875% 2028 Notes and 8.00% 2028 Notes as of December 31, 2023 was $122.9 million, $125.9 million, and $76.7 million, respectively. The fair value, based on the last reported closing prices, of the 5.00% 2026 Notes and 4.875% 2028 Notes as of March 31, 2023 was $121.5 million and $127.4 million, respectively. We consider the closing prices of the 5.00% 2026 Notes, 4.875% 2028 Notes and 8.00% 2028 Notes to be Level 1 inputs within the ASC 820 hierarchy.

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NOTE 6. REGISTRATION STATEMENT AND COMMON EQUITY OFFERINGS

Registration Statement

On September 3, 2021, we filed a registration statement on Form N-2 (File No. 333-259302), which the SEC declared effective on October 15, 2021. The registration statement permits us to issue, through one or more transactions, up to an aggregate of $300.0 million in securities, consisting of common stock, preferred stock, subscription rights, debt securities, and warrants to purchase common stock, preferred stock, or debt securities, including through concurrent, separate offerings of such securities. As of December 31, 2023, we had the ability to issue up to $194.5 million of the $300.0 million of securities registered under the registration statement.

Common Equity Offering

In August 2022, we entered into equity distribution agreements with Oppenheimer & Co. and Virtu Americas LLC (each a “Sales Agent”), under which we have the ability to issue and sell shares of our common stock, from time to time, through the Sales Agents, having an aggregate offering price of up to $50.0 million in what is commonly referred to as an “at-the-market” program (“Common Stock ATM Program”). In August 2023, we entered into an equity distribution agreement with B. Riley Securities, Inc. and entered into amendments to the agreements with Oppenheimer & Co. Inc. and Virtu Americas LLC in order to add B. Riley Securities, Inc. as a Sales Agent for the Common Stock ATM Program. As of December 31, 2023, we had remaining capacity to sell up to an additional $19.3 million of common stock under the Common Stock ATM program.

During the three months ended December 31, 2023, we sold 1,456,279 shares of our common stock under the Common Stock ATM Program, with a weighted-average gross price of $14.51 per share and a weighted-average net price of $14.28 per share after deducting commissions and offering costs borne by us, raising approximately $21.1 million and $20.8 million of gross and net proceeds, respectively. During the nine months ended December 31, 2023, we sold 1,760,449 shares of common stock under the Common Stock ATM Program, with a weighted-average gross price of $14.34 per share and a weighted-average net price of $14.12 per share after deducting commissions and offering costs borne by us, raising approximately $25.3 million and $24.9 million of gross and net proceeds, respectively. All of these sales were above our then current estimated NAV per share.

During the three months ended December 31, 2022, we sold 212,338 shares of common stock under the Common Stock ATM Program, with a weighted-average gross price of $14.11 per share and a weighted-average net price of $13.91 per share after deducting commissions and offering costs borne by us, raising approximately $3.0 million of gross and net proceeds. During the nine months ended December 31, 2022, we sold 241,978 shares of common stock under the Common Stock ATM Program, with a weighted-average gross price of $14.31 per share and a weighted-average net price of $14.11 per share after deducting commissions and offering costs borne by us, raising approximately $3.5 million and $3.4 million of gross and net proceeds, respectively. All of these sales were above our then current estimated NAV per share.

NOTE 7. NET INCREASE (DECREASE) IN NET ASSETS RESULTING FROM OPERATIONS PER WEIGHTED-AVERAGE COMMON SHARE

The following table sets forth the computation of basic and diluted Net increase in net assets resulting from operations per weighted-average common share for the three and nine months ended December 31, 2023 and 2022:

	Three Months Ended December 31,				Nine Months Ended December 31,
	2023		2022		2023		2022
Net increase in net assets resulting from operations	$	6,579	$	15,779	$	62,721	$	30,889
Basic and diluted weighted-average common shares	34,351,597		33,316,055		33,921,300		33,246,811
Basic and diluted net increase in net assets resulting from operations per weighted-average common share	$	0.19	$	0.47	$	1.85	$	0.93

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NOTE 8. DISTRIBUTIONS TO COMMON STOCKHOLDERS

To qualify to be taxed as a RIC under Subchapter M of the Code, we must generally distribute to our stockholders, for each taxable year, at least 90% of our taxable ordinary income plus the excess of our net short-term capital gains over net long-term capital losses (“Investment Company Taxable Income”). The amount to be paid out as distributions to our stockholders is determined by our Board of Directors and is based upon management’s estimate of Investment Company Taxable Income and net long-term capital gains, as well as amounts to be distributed in accordance with Section 855(a) of the Code. Based on that estimate, our Board of Directors declares monthly distributions, and supplemental distributions, as appropriate, to stockholders each quarter and deemed distributions of long-term capital gains annually as of the end of the fiscal year, as applicable.

The U.S. federal income tax characteristics of cash distributions paid to our common stockholders generally are reported to stockholders on IRS Form 1099 after the end of each calendar year. Estimates of tax characterization made on a quarterly basis may not be representative of the actual tax characterization of cash distributions for the full year. Estimates made on a quarterly basis are updated as of each interim reporting date. The tax characterization of cash distributions paid to common stockholders during the calendar year ended December 31, 2023 was 53.2% from ordinary income and 46.8% from capital gains.

We paid the following cash distributions to our common stockholders for the nine months ended December 31, 2023 and 2022:

For the Nine Months Ended December 31, 2023:

Declaration Date	Record Date	Payment Date	Distribution per Common Share
April 11, 2023	April 21, 2023	April 28, 2023	$	0.08
April 11, 2023	May 23, 2023	May 31, 2023	0.08
April 11, 2023	June 5, 2023	June 15, 2023	0.12		(A)
April 11, 2023	June 21, 2023	June 30, 2023	0.08
July 11, 2023	July 21, 2023	July 31, 2023	0.08
July 11, 2023	August 23, 2023	August 31, 2023	0.08
July 11, 2023	September 7, 2023	September 15, 2023	0.12		(A)
July 11, 2023	September 21, 2023	September 29, 2023	0.08
October 10, 2023	October 20, 2023	October 31, 2023	0.08
October 10, 2023	November 7, 2023	November 17, 2023	0.12		(A)
October 10, 2023	November 20, 2023	November 30, 2023	0.08
October 24, 2023	December 5, 2023	December 15, 2023	0.88		(A)
October 10, 2023	December 18, 2023	December 29, 2023	0.08
	Nine Months Ended December 31, 2023		$	1.96

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For the Nine Months Ended December 31, 2022:

Declaration Date	Record Date	Payment Date	Distribution per Common Share
April 12, 2022	April 22, 2022	April 29, 2022	$	0.075
April 12, 2022	May 20, 2022	May 31, 2022	0.075
April 12, 2022	June 6, 2022	June 15, 2022	0.120		(A)
April 12, 2022	June 22, 2022	June 30, 2022	0.075
July 12, 2022	July 22, 2022	July 29, 2022	0.075
July 12, 2022	August 23, 2022	August 31, 2022	0.075
July 12, 2022	September 22, 2022	September 30, 2022	0.075
October 11, 2022	October 21, 2022	October 31, 2022	0.080
October 11, 2022	November 18, 2022	November 30, 2022	0.080
October 11, 2022	December 6, 2022	December 15, 2022	0.120		(A)
October 11, 2022	December 20, 2022	December 30, 2022	0.080
	Nine Months Ended December 31, 2022		$	0.930

(A)Represents a supplemental distribution to common stockholders.

Aggregate cash distributions to our common stockholders declared and paid were $67.4 million and $30.9 million for the nine months ended December 31, 2023 and 2022, respectively.

For the fiscal year ended March 31, 2023, Investment Company Taxable Income exceeded distributions declared and paid, and, in accordance with Section 855(a) of the Code, we elected to treat $21.4 million of the first distributions paid subsequent to fiscal year-end, as having been paid in the prior year. In addition, for the fiscal year ended March 31, 2023 net capital gains exceeded distributions declared and paid, and, in accordance with Section 855(a) of the Code, we elected to treat $10.6 million of the first distributions paid subsequent to fiscal year-end as having been paid in the prior year.

For the three months ended December 31, 2023, we recorded $0.4 million of net adjustments for estimated permanent book-tax differences to reflect tax character, which decreased Capital in excess of par value and increased Overdistributed net investment income on our accompanying Consolidated Statements of Assets and Liabilities. For the three months ended December 31, 2022, we recorded $0.3 million of net adjustments for estimated permanent book-tax differences to reflect tax character, which decreased Capital in excess of par value and Accumulated net realized gain in excess of distributions and increased Underdistributed net investment income on our accompanying Consolidated Statements of Assets and Liabilities.

For the nine months ended December 31, 2023, we recorded $0.4 million of net adjustments for estimated permanent book-tax differences to reflect tax character, which increased Overdistributed net investment income and decreased Accumulated net realized gain in excess of distributions and Capital in excess of par value on our accompanying Consolidated Statements of Assets and Liabilities. For the nine months ended December 31, 2022, we recorded $1.6 million of net adjustments for estimated permanent book-tax differences to reflect tax character, which decreased Capital in excess of par value and increased Underdistributed net investment income and Accumulated net realized gain in excess of distributions on our accompanying Consolidated Statements of Assets and Liabilities.

We may distribute our net long-term capital gains, if any, in cash or elect to retain some or all of such gains, pay taxes at the U.S. federal corporate-level income tax rate on the amount retained, and designate the retained amount as a “deemed distribution.” If we elect to retain net long-term capital gains and deem them distributed, each U.S. common stockholder will be treated as if they received a distribution of their pro-rata share of the retained net long-term capital gain and the U.S. federal income tax paid. As a result, each U.S. common stockholder will (i) be required to report their pro rata share of the retained gain on their tax return as long-term capital gain, (ii) receive a refundable tax credit for their pro-rata share of federal income tax paid by us on the retained gain, and (iii) increase the tax basis of their shares of common stock by an amount equal to the deemed distribution less the tax credit. For the year ended March 31, 2023, we did not elect to retain long-term capital gains and to treat them as deemed distributions to common stockholders.

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NOTE 9. COMMITMENTS AND CONTINGENCIES

Legal Proceedings

We are party to certain legal proceedings incidental to the normal course of our business. We are required to establish reserves for litigation matters where those matters present loss contingencies that are both probable and estimable. When loss contingencies are not both probable and estimable, we do not establish reserves. Based on current knowledge, we do not believe that loss contingencies, if any, arising from pending investigations, litigation or regulatory matters will have a material adverse effect on our financial condition, results of operation or cash flows. Additionally, based on our current knowledge, we do not believe such loss contingencies are both probable and estimable and therefore, as of December 31, 2023 and March 31, 2023, we had no established reserves for such loss contingencies.

Escrow Holdbacks

From time to time, we enter into arrangements relating to exits of certain investments whereby specific amounts of the proceeds are held in escrow to be used to satisfy potential obligations, as stipulated in the sales agreements. We record escrow amounts in Restricted cash and cash equivalents, if received in cash but subject to potential obligations or other contractual restrictions, or as escrow receivables in Other assets, net, if not yet received in cash, on our accompanying Consolidated Statements of Assets and Liabilities. We establish reserves and holdbacks against escrow amounts if we determine that it is probable and estimable that a portion of the escrow amounts will not ultimately be released or received at the end of the escrow period. Reserves and holdbacks against escrow amounts were $1.0 million and $85 thousand as of December 31, 2023 and March 31, 2023, respectively.

Financial Commitments and Obligations

We may have line of credit commitments to certain of our portfolio companies that have not been fully drawn. Since these lines of credit commitments have expiration dates and we expect many will never be fully drawn, the total line of credit commitment amounts do not necessarily represent future cash requirements. We estimate the fair value of the combined unused line of credit commitments as of December 31, 2023 and March 31, 2023 to be insignificant.

The following table summarizes the principal balances of unused line of credit as of December 31, 2023 and March 31, 2023, which are not reflected as liabilities in the accompanying Consolidated Statements of Assets and Liabilities:

	December 31, 2023		March 31, 2023
Unused line of credit commitments	$	1,500	$	2,150
Total	$	1,500	$	2,150

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NOTE 10. FINANCIAL HIGHLIGHTS

	Three Months Ended December 31,						Nine Months Ended December 31,
	2023			2022			2023			2022
Per Common Share Data:
Net asset value at beginning of period(A)	$	14.03		$	13.31		$	13.09		$	13.43
Income from investment operations(B)
Net investment income	0.28			0.26			0.49			0.82
Net realized gain	1.27			0.11			1.32			0.32
Net unrealized (depreciation) appreciation	(1.36)			0.10			0.04			(0.21)
Total from investment operations	0.19			0.47			1.85			0.93
Effect of equity capital activity(B)
Cash distributions to common stockholders from net investment income(C)	(0.43)			(0.22)			(0.84)			(0.46)
Cash distributions to common stockholders from net realized gains(C)	(0.81)			(0.14)			(1.12)			(0.47)
Discounts, commissions and offering costs	(0.01)			—			(0.01)			—
Net accretive effective of equity offering(D)	0.05			0.01			0.05			0.01
Total from equity capital activity	(1.20)			(0.35)			(1.92)			(0.92)
Other, net(B)(E)	(0.01)			—			(0.01)			(0.01)
Net asset value at end of period(A)	$	13.01		$	13.43		$	13.01		$	13.43
Per common share market value at beginning of period	$	12.74		$	12.10		$	13.25		$	16.13
Per common share market value at end of period	$	14.15		$	12.91		14.15			12.91
Total investment return(F)	20.85		%	9.63		%	22.72		%	(14.36)		%
Common stock outstanding at end of period(A)	35,351,954			33,447,001			35,351,954			33,447,001
Statement of Assets and Liabilities Data:
Net assets at end of period	$	459,941		$	449,191		$	459,941		$	449,191
Average net assets(G)	$	475,007		$	445,431		455,627			446,742
Senior Securities Data:
Total borrowings, at cost	$	419,838		$	292,088		$	419,838		$	292,088
Ratios/Supplemental Data:
Ratio of net expenses to average net assets – annualized(H)	11.23		%	11.70		%	13.78		%	10.22		%
Ratio of net investment (loss) income to average net assets – annualized(I)	8.21		%	7.70		%	4.80		%	8.14		%

(A)Based on actual shares of common stock outstanding at the beginning or end of the corresponding period, as appropriate.

(B)Based on weighted-average basic common share data for the corresponding period.

(C)The tax character of distributions is determined based on taxable income calculated in accordance with income tax regulations, which may differ from amounts determined under GAAP. For further information on the estimated character of our distributions to common stockholders, including changes in estimates, as applicable, refer to Note 8 — Distributions to Common Stockholders.

(D)During the three and nine months ended December 31, 2023 and 2022, the accretive effect is a result of issuing common shares at a price above the then current NAV per share.

(E)Represents the impact of the different share amounts (weighted-average basic common shares outstanding for the corresponding period and actual common shares outstanding at the end of the period) in the Per Common Share Data calculations and rounding impacts.

(F)Total return equals the change in the market value of our common stock from the beginning of the period, taking into account dividends reinvested in accordance with the terms of our dividend reinvestment plan. Total return does not take into account distributions that may be characterized as a return of capital. For further information on the estimated character of our distributions to common stockholders, including changes in estimates, as applicable, refer to Note 8 — Distributions to Common Stockholders.

(G)Calculated using the average balance of net assets at the end of each month of the reporting period.

(H)Ratio of net expenses to average net assets is computed using total expenses, net of any non-contractual, unconditional, and irrevocable credits of fees from the Adviser. Had we not received any non-contractual, unconditional, and irrevocable credits of fees from the Adviser, the ratio of expenses to average net assets - annualized would have been 14.70% and 14.24% for the three months ended December 31, 2023 and 2022, respectively, and 17.27% and 12.87% for the nine months ended December 31, 2023 and 2022, respectively.

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(I)Had we not received any non-contractual, unconditional, and irrevocable credits of fees from the Adviser, the ratio of net investment income (loss) to average net assets - annualized would have been 4.73% and 5.15% for the three months ended December 31, 2023 and 2022, respectively, and 1.32% and 5.50% for the nine months ended December 31, 2023 and 2022, respectively.

NOTE 11. UNCONSOLIDATED SIGNIFICANT SUBSIDIARIES

In accordance with the SEC’s Regulation S-X, we do not consolidate portfolio company investments. Further, in accordance with ASC 946, we are precluded from consolidating any entity other than another investment company, except that ASC 946 provides for the consolidation of a controlled operating company that provides substantially all of its services to the investment company or its consolidated subsidiaries. We did not have any unconsolidated subsidiaries that met any of the significance conditions under Rule 1-02(w) of the SEC’s Regulation S-X as of or during the nine months ended December 31, 2023 and 2022.

NOTE 12. SUBSEQUENT EVENTS

Distributions and Dividends

In January 2024, our Board of Directors declared the following monthly distributions to common stockholders:

Record Date	Payment Date	Distribution per Common Share
January 23, 2024	January 31, 2024	$	0.08
February 21, 2024	February 29, 2024	0.08
March 21, 2024	March 29, 2024	0.08
	Total for the Quarter:	$	0.24

ATM Activity

In January 2024, we sold 538,206 shares of our common stock under our Common Stock ATM program at a weighted-average gross price of $14.53 per share and raised approximately $7.7 million in net proceeds. All of these sales were above our then-current estimated NAV per share.

Revolving Line of Credit

On February 5, 2024, we, through our wholly-owned subsidiary, Business Investment, entered into Amendment No. 9 to the Credit Facility with KeyBank, as administrative agent, joint lead arranger and lender, Fifth Third Bank as managing agent, joint lead arranger and lender, the Adviser, as servicer, and certain other lenders party thereto. The Credit Facility was amended to increase the size from $135.0 million to $200.0 million and update certain existing terms. The Credit Facility continues to include customary terms, covenants, events of default and constraints on borrowing availability based on collateral tests for a credit facility of its size and nature.

New Investment Advisory Agreement

On January 4, 2024, we reconvened our Special Meeting of Stockholders (the “Special Meeting”) that was adjourned on December 11, 2023. Our stockholders voted and approved the new investment advisory agreement between us and the Adviser (the "New Advisory Agreement") at the Special Meeting.

The New Advisory Agreement is the result of an anticipated change in control of the Adviser. From inception, the Adviser has been 100% indirectly owned and controlled by David Gladstone. David Gladstone owns 100% of the voting and economic interests of The Gladstone Companies, Ltd., which in turn owns 100% of the voting and economic interests of The Gladstone Companies, Inc., which in turn owns 100% of the voting and economic interests of the Adviser. Immediately after approval by the stockholders of Gladstone Capital Corporation of a similar advisory agreement, which occurred on January 24, 2024, the Adviser entered into a voting trust agreement (the “Voting Trust Agreement”), among David Gladstone, Lorna Gladstone, Laura Gladstone, Kent Gladstone and Jessica Martin, each as a trustee and collectively, as the board of trustees of the voting trust (the “Voting Trust Board”), the Adviser and certain stockholders of the Adviser, pursuant to which David Gladstone deposited all of his indirect interests in the Adviser, which represented 100% of the voting and economic interests thereof, with the voting trust.

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Pursuant to the Voting Trust Agreement, prior to its Effective Date (as defined below) David Gladstone has, in his sole discretion, have the full, exclusive and unqualified right and power to vote in person or by proxy all of the shares of common stock of the Adviser deposited with the voting trust at all meetings of the stockholders of the Adviser in respect of any and all matters on which the stockholders of the Adviser are entitled to vote under the Adviser’s certificate of incorporation or applicable law, to give consents in lieu of voting such shares of common stock of the Adviser at a meeting of the stockholders of the Adviser in respect of any and all matters on which stockholders of the Adviser are entitled to vote under its certificate of incorporation or applicable law, to enter into voting agreements, waive notice of any meeting of stockholders of the Adviser in respect of such shares of common stock of the Adviser and to grant proxies with respect to all such shares of common stock of the Adviser with respect to any lawful corporate action (collectively, the “Voting Powers”).

Commencing on the Effective Date, the Voting Trust Board shall have the full, exclusive and unqualified right and power to exercise the Voting Powers. Each member of the Voting Trust Board shall hold 20% of the voting power of the Voting Trust Board as of the Effective Date. The “Effective Date” shall occur on the earliest of (i) the death of David Gladstone, (ii) David Gladstone’s election (in his sole discretion) and (iii) one year from the date the Voting Trust Agreement is entered into. Following entry into the Voting Trust Agreement, the current members of senior management of the Adviser will continue to manage the day-to-day aspects of the Adviser.

There are no changes to the terms of the Advisory Agreement currently in effect (the "Original Advisory Agreement") in the New Advisory Agreement, including the fee structure and services to be provided, other than the date and term of the New Advisory Agreement as compared to the Original Advisory Agreement. In addition to there being no changes to the fee structure, no other fees or expenses currently paid by us will change as a result of entry into the New Advisory Agreement. There will be no changes to our principal investment objective, investment strategies, fundamental investment restrictions or principal risks as a result of entry into the Voting Trust Agreement or New Advisory Agreement.

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ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

All statements contained herein, other than historical facts, may constitute “forward-looking statements.” These statements may relate to, among other things, our future operating results, our business prospects and the prospects of our portfolio companies, actual and potential conflicts of interest with Gladstone Management Corporation (the “Adviser”) and its affiliates, the use of borrowed money to finance our investments, the adequacy of our financing sources and working capital, and our ability to co-invest, among other factors. In some cases, you can identify forward-looking statements by terminology such as “estimate,” “may,” “might,” “believe,” “will,” “provided,” “anticipate,” “future,” “could,” “growth,” “plan,” “project,” “intend,” “expect,” “should,” “would,” “if,” “seek,” “possible,” “potential,” “likely” or the negative or variations of such terms or comparable terminology. These forward-looking statements involve known and unknown risks, uncertainties and other factors that may cause our actual results, levels of activity, performance or achievements to be materially different from any future results, levels of activity, performance or achievements expressed or implied by such forward-looking statements. Such factors include: (1) changes in the economy and the capital markets; (2) risks associated with negotiation and consummation of pending and future transactions; (3) the loss of one or more of our executive officers, in particular David Gladstone, David Dullum, or Terry Lee Brubaker; (4) changes in our investment objectives and strategy; (5) availability, terms (including the possibility of interest rate volatility) and deployment of capital; (6) changes in our industry, interest rates, exchange rates, regulation, or the general economy, including inflation; (7) our business prospects and the prospects of our portfolio companies; (8) the degree and nature of our competition; (9) changes in governmental regulation, tax rates and similar matters; (10) our ability to exit investments in a timely manner; (11) our ability to maintain our qualification as a regulated investment company (“RIC”) and as a business development company (“BDC”); and (12) those factors described in Item 1A. “Risk Factors” herein and the “Risk Factors” sections of our Annual Report on Form 10-K for the fiscal year ended March 31, 2023, filed with the U.S. Securities and Exchange Commission (“SEC”) on May 10, 2023 (the “Annual Report”). We caution readers not to place undue reliance on any such forward-looking statements. Actual results could differ materially from those anticipated in our forward-looking statements and future results could differ materially from historical performance. We have based forward-looking statements on information available to us on the date of this Quarterly Report on Form 10-Q (the “Quarterly Report”). Except as required by the federal securities laws, we undertake no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, after the date of this Quarterly Report. Although we undertake no obligation to revise or update any forward-looking statements, whether as a result of new information, future events or otherwise, you are advised to consult any additional disclosures that we may make directly to you or through reports that we have filed or in the future may file with the SEC, including subsequent annual reports on Form 10-K, quarterly reports on Form 10-Q and current reports on Form 8-K. The forward-looking statements contained in this Quarterly Report are excluded from the safe harbor protection provided by the Private Securities Litigation Reform Act of 1995 and Section 27A of the Securities Act of 1933, as amended.

In this Quarterly Report, the “Company,” “we,” “us,” and “our” refer to Gladstone Investment Corporation and its wholly-owned subsidiaries unless the context otherwise indicates. Dollar amounts, except per share amounts, are in thousands, unless otherwise indicated.

The following analysis of our financial condition and results of operations should be read in conjunction with our accompanying Consolidated Financial Statements and the notes thereto contained elsewhere in this Quarterly Report and in our Annual Report. Historical financial condition and results of operations and percentage relationships among any amounts in the financial statements are not necessarily indicative of financial condition, results of operations or percentage relationships for any future periods.

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OVERVIEW

General

We were incorporated under the General Corporation Law of the State of Delaware on February 18, 2005. On June 22, 2005, we completed our initial public offering and commenced operations. We operate as an externally managed, closed-end, non-diversified management investment company and have elected to be treated as a BDC under the Investment Company Act of 1940, as amended (the “1940 Act”). For U.S. federal income tax purposes, we have elected to be treated as a RIC under Subchapter M of the Internal Revenue Code of 1986, as amended (the “Code”). To continue to qualify as a RIC for U.S. federal income tax purposes and obtain favorable RIC tax treatment, we must meet certain requirements, including certain minimum distribution requirements.

We were established for the purpose of investing in debt and equity securities of established private businesses operating in the United States (“U.S.”). Our investment objectives are to: (i) achieve and grow current income by investing in debt securities of established businesses that we believe will provide stable earnings and cash flow to pay expenses, make principal and interest payments on our outstanding indebtedness, and make distributions to our stockholders that grow over time; and (ii) provide our stockholders with long-term capital appreciation in the value of our assets by investing in equity securities of established businesses, generally in combination with the aforementioned debt securities, that we believe can grow over time to permit us to sell our equity investments for capital gains. To achieve our objectives, our investment strategy is to invest in several categories of debt and equity securities, with individual investments generally totaling up to $75 million, although investment size may vary depending upon our total assets or available capital at the time of investment. We expect that our investment portfolio over time will consist of approximately 75% in debt investments and 25% in equity investments, at cost. As of December 31, 2023, our investment portfolio was comprised of 76.6% in debt investments and 23.4% in equity investments, at cost.

We focus on investing in lower middle market private businesses (which we generally define as companies with annual earnings before interest, taxes, depreciation and amortization (“EBITDA”) of $4 million to $15 million) (“Lower Middle Market”) in the U.S. that meet certain criteria, including: the sustainability of the business’ free cash flow and its ability to grow it over time, adequate assets for loan collateral, experienced management teams with a significant ownership interest in the portfolio company, reasonable capitalization of the portfolio company, including an ample equity contribution or cushion based on prevailing enterprise valuation multiples, and the potential to realize appreciation and gain liquidity in our equity position, if any. We anticipate that liquidity in our equity position will be achieved through a merger or acquisition of the portfolio company, a public offering of the portfolio company’s stock, or, to a lesser extent, by exercising our right to require the portfolio company to repurchase our warrants, though there can be no assurance that we will always have these rights. We invest in portfolio companies that seek funds for management buyouts and/or growth capital to finance acquisitions, recapitalize or, to a lesser extent, refinance their existing debt facilities. We seek to avoid investing in high-risk, early-stage enterprises.

We invest by ourselves or jointly with other funds and/or management of the portfolio company, depending on the opportunity. In July 2012, the SEC granted us an exemptive order (the “Co-Investment Order”) that expanded our ability to co-invest, under certain circumstances, with certain of our affiliates, including Gladstone Capital and any future BDC or closed-end management investment company that is advised (or sub-advised if it controls the fund) by the Adviser, or any combination of the foregoing, subject to the conditions in the Co-Investment Order. We believe the Co-Investment Order has enhanced and will continue to enhance our ability to further our investment objectives and strategies. If we are participating in an investment with one or more co-investors, whether or not an affiliate of ours, our investment is likely to be smaller than if we were investing alone.

We are externally managed by the Adviser, an investment adviser registered with the SEC and an affiliate of ours, pursuant to an investment advisory and management agreement (the “Advisory Agreement”). The Adviser manages our investment activities. We have also entered into an administration agreement with Gladstone Administration, LLC, an affiliate of ours and the Adviser, whereby we pay separately for administrative services.

Our shares of common stock, our 5.00% Notes due 2026 (“5.00% 2026 Notes”), our 4.875% Notes due 2028 ("4.875% 2028 Notes") and our 8.00% Notes due 2028 (“8.00% 2028 Notes”) are traded on the Nasdaq Global Select Market (“Nasdaq”) under the trading symbols “GAIN,” “GAINN,” "GAINZ" and “GAINL,” respectively.

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Business

Portfolio Activity

While the business environment remains competitive, we continue to see new investment opportunities consistent with our investment strategy of providing a combination of debt and equity in support of management and independent sponsor-led buyouts of Lower Middle Market companies in the U.S. During the nine months ended December 31, 2023, we invested in two new portfolio companies and exited one portfolio company. From our initial public offering in June 2005 through December 31, 2023, we have invested in 58 companies, excluding investments in syndicated loans, for a total of approximately $1.7 billion, before giving effect to principal repayments and divestitures.

The majority of the debt securities in our portfolio have a success fee component, which enhances the yield on our debt investments. Unlike paid-in-kind (“PIK”) income, we generally do not recognize success fees as income until payment has been received. Due to the contingent nature of success fees, there are no guarantees that we will be able to collect any or all of these success fees or know the timing of any such collections. As a result, as of December 31, 2023, we had unrecognized, contractual success fees of $61.8 million, or $1.75 per common share. Consistent with accounting principles generally accepted in the U.S. (“GAAP”), we have not recognized success fee receivables and related income in our accompanying Consolidated Financial Statements until earned.

From inception through December 31, 2023, we completed sales of 30 portfolio companies that we acquired under our buyout strategy (which excludes investments in syndicated loans). In the aggregate, these sales have generated $304.9 million in net realized gains and $41.8 million in other income upon exit, for a total increase to our net assets of $346.7 million. We believe, in aggregate, these transactions were equity-oriented investment successes and exemplify our investment strategy of striving to achieve returns through current income on the debt portion of our investments and capital gains from the equity portion. The 30 liquidity events have offset any realized losses since inception, which were primarily incurred during the 2008-2009 recession in connection with the sale of performing syndicated loans at a realized loss to pay off a former lender. The successful exits, in part, enabled us to increase the monthly distribution run rate by 100.0% from March 2011 through December 31, 2023, and allowed us to declare and pay 22 supplemental distributions to common stockholders from March 2012 through December 31, 2023.

Capital Raising

We have been able to meet our capital needs through extensions of and increases to the Fifth Amended and Restated Credit Agreement dated April 30, 2013, as amended from time to time (the “Credit Facility”), and by accessing the capital markets in the form of public offerings of unsecured notes, as well as common and preferred stock. We have successfully extended the Credit Facility’s revolving period multiple times, most recently to October 2026, and currently have a total commitment amount of $135.0 million (with a potential total commitment of $300.0 million through additional commitments from new or existing lenders). During the nine months ended December 31, 2023, we issued our 8.00% 2028 Notes for gross proceeds of $74.8 million and sold 1,760,449 shares of our common stock under our common stock "at-the-market" program (the "Common Stock ATM Program") for gross proceeds of approximately $25.3 million. During the year ended March 31, 2023, we sold 386,482 shares of our common stock under our Common Stock ATM program for gross proceeds of approximately $5.5 million. Refer to “Liquidity and Capital Resources — Revolving Line of Credit” for further discussion of the Credit Facility and to “Liquidity and Capital Resources — Equity — Common Stock” further discussion of our common stock.

Although we have been able to access the capital markets historically, market conditions may continue to affect the trading price of our common stock and thus our ability to finance new investments through the issuance of common equity. On December 31, 2023, the closing market price of our common stock was $14.15 per share, representing a 8.8% premium to our net asset value (“NAV”) of $13.01 per share as of December 31, 2023. When our common stock trades below NAV, our ability to issue additional equity is constrained by provisions of the 1940 Act, which generally prohibits the issuance and sale of our common stock at an issuance price below the then-current NAV per share without stockholder approval, other than through sales to our then-existing stockholders pursuant to a rights offering.

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Regulatory Compliance

Our ability to seek external debt financing, to the extent that it is available under current market conditions, is further subject to the asset coverage limitations of the 1940 Act, which require us to have asset coverage (as defined in Sections 18 and 61 of the 1940 Act), of at least 150% on each of our senior securities representing indebtedness and our senior securities that are stock (such as our previously outstanding series of term preferred stock).

On April 10, 2018, our Board of Directors, including a “required majority” (as such term is defined in Section 57(o) of the 1940 Act) thereof, approved the modified asset coverage requirements set forth in Section 61(a)(2) of the 1940 Act. As a result, our asset coverage requirements for senior securities changed from 200% to 150%, effective as of April 10, 2019, one year after the date of the Board of Directors’ approval.

As of December 31, 2023, our asset coverage ratio on our senior securities representing indebtedness was 206.9%.

Investment Highlights

Investment Activity

During the nine months ended December 31, 2023, the following significant transactions occurred:

•In May 2023, we invested $15.3 million in a new portfolio company, Home Concepts Acquisition, Inc. ("Home Concepts"), in the form of $12.0 million of secured first lien debt and $3.3 million of preferred equity. Home Concepts, headquartered in Santa Barbara, California, is a leading home improvement advertising publication focusing on connecting homeowners to high-quality residential repair and remodeling businesses.

•In June 2023, we recapitalized our existing investment in Old World Christmas, Inc. ("Old World") and invested an additional $2.5 million in the form of secured first lien debt. In connection with this investment, we received proceeds of $2.2 million, of which $1.9 million was recognized as dividend income and $0.3 million was recognized as a realized gain.

•In June 2023, we invested an additional $30.0 million in the form of $25.0 million of secured second lien debt and $5.0 million of common equity in Nth Degree Investment Group, LLC to fund an add-on acquisition.

•In June 2023, we received a $1.5 million escrow settlement in connection with our December 2021 exit of SOG Specialty Knives & Tools, LLC, of which $0.6 million was recognized as a return of cost basis and $0.9 million as a realized gain. As a result of the escrow release, there are no remaining assets held by Gladstone SOG Investments, Inc.

•In August 2023, we invested an additional $18.7 million in the form of secured first lien debt in Nocturne Villa Rentals, Inc. ("Nocturne") to fund an add-on acquisition.

•In September 2023, we invested $46.0 million in a new portfolio company, The E3 Company, LLC ("E3"), in the form of $34.8 million of secured first lien debt and $11.2 million of preferred equity. E3, headquartered in Kilgore, Texas, is a market leader in advanced pressure management solutions for oil and gas well completions.

•In October 2023, we invested an additional $64.7 million in the form of $39.0 million of secured second lien debt and $25.7 million of common equity in SFEG Holdings, Inc. ("SFEG") to fund an add-on acquisition. In connection with the investment, our existing preferred equity with a cost basis of $4.8 million was converted to common equity.

•In October 2023, we exited our investment in Counsel Press, Inc. ("Counsel Press"), which resulted in success fee income of $1.4 million, a realized gain of $43.5 million and the repayment of our debt investment of $27.5 million at par.

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Recent Developments

Distributions and Dividends

In January 2024, our Board of Directors declared the following monthly cash distributions to common stockholders:

Record Date	Payment Date	Distribution per Common Share
January 23, 2024	January 31, 2024	$	0.08
February 21, 2024	February 29, 2024	0.08
March 21, 2024	March 29, 2024	0.08
	Total for the Quarter:	$	0.24

Revolving Line of Credit

On February 5, 2024, we, through our wholly-owned subsidiary Gladstone Business Investment, LLC (“Business Investment”), entered into Amendment No. 9 to the Credit Facility with KeyBank National Association (“KeyBank”), as administrative agent, joint lead arranger and lender, Fifth Third Bank as managing agent, joint lead arranger and lender, the Adviser, as servicer, and certain other lenders party thereto. The Credit Facility was amended to increase the size from $135.0 million to $200.0 million and update certain existing terms. The Credit Facility continues to include customary terms, covenants, events of default and constraints on borrowing availability based on collateral tests for a credit facility of its size and nature.

LIBOR Transition

The 30-day London Interbank Offered Rate ("LIBOR") is no longer readily available and each of our debt investments has transitioned from LIBOR as the applicable reference rate to 30-day SOFR. We anticipate originating future variable rate debt instruments using SOFR. We experienced minimal impacts on our operations as a result of the transition to SOFR.

Impact of Inflation

We believe the effects of inflation on our historical results of operations and financial condition have not been significant. During the nine months ended December 31, 2023, general inflationary pressures and certain commodity price volatility have impacted certain of our portfolio companies to varying degrees; however, the broad based impact of these pricing changes have largely been mitigated by price adjustments without adverse sales implications, and thus, have not materially impacted our portfolio companies’ ability to service their indebtedness, including our loans. Notwithstanding the results to date, we expect that the cumulative effect of these inflationary pressures may impact the profit margins or sales of certain portfolio companies and their ability to service their debts. We continue to monitor the current inflationary environment to anticipate any impact on our portfolio companies, including their availability to pay interest on our loans. We cannot assure you that our results of operations and financial condition or that of our portfolio companies will not be materially impacted by inflation in the future.

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RESULTS OF OPERATIONS

Comparison of the Three Months Ended December 31, 2023 to the Three Months Ended December 31, 2022

	For the Three Months Ended December 31,
	2023		2022		$ Change		% Change
INVESTMENT INCOME
Interest income	$	21,699	$	16,067	$	5,632	35.1	%
Dividend and success fee income	1,382		5,527		(4,145)		(75.0)	%
Total investment income	23,081		21,594		1,487		6.9	%
EXPENSES
Base management fee	4,602		3,789		813		21.5	%
Loan servicing fee	2,332		2,080		252		12.1	%
Incentive fee	1,667		3,945		(2,278)		(57.7)	%
Administration fee	450		410		40		9.8	%
Interest expense	6,520		4,074		2,446		60.0	%
Amortization of deferred financing costs and discounts	589		452		137		30.3	%
Other	1,302		1,111		191		17.2	%
Expenses before credits from Adviser	17,462		15,861		1,601		10.1	%
Credits to fees from Adviser	(4,125)		(2,836)		(1,289)		45.5	%
Total expenses, net of credits to fees	13,337		13,025		312		2.4	%
NET INVESTMENT INCOME	9,744		8,569		1,175		13.7	%
REALIZED AND UNREALIZED GAIN (LOSS)
Net realized gain	43,461		3,844		39,617		NM
Net unrealized (depreciation) appreciation	(46,626)		3,366		(49,992)		NM
Net realized and unrealized (loss) gain	(3,165)		7,210		(10,375)		NM
NET INCREASE IN NET ASSETS RESULTING FROM OPERATIONS	$	6,579	$	15,779	$	(9,200)	NM
WEIGHTED-AVERAGE SHARES OF COMMON STOCK OUTSTANDING
Basic and diluted	34,351,597		33,316,055		1,035,542		3.1	%
BASIC AND DILUTED PER COMMON SHARE:
Net investment income	$	0.28	$	0.26	$	0.02	7.7	%
Net increase in net assets resulting from operations	$	0.19	$	0.47	$	(0.28)	(59.6)	%

NM - Not meaningful

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Investment Income

Total investment income increased $1.5 million, or 6.9%, for the three months ended December 31, 2023, as compared to the prior year period, primarily due to an increase in interest income, partially offset by a decrease in dividend and success fee income.

Interest income from our investments in debt securities increased $5.6 million, or 35.1%, for the three months ended December 31, 2023, as compared to the prior year period. Generally, the level of interest income from investments is directly related to the principal balance of our interest-bearing investment portfolio outstanding during the period, multiplied by the weighted-average yield. The weighted-average principal balance of our interest-bearing investment portfolio during the three months ended December 31, 2023 was $594.3 million, compared to $474.1 million for the prior year period. This increase was primarily due to the $117.9 million of follow-on debt investments in existing portfolio companies and the origination of $46.8 million of new debt investments, partially offset by $31.8 million of pay-offs, restructurings, or write-offs of debt investments, and $9.2 million of loans placed on non-accrual status after September 30, 2022, and their respective impact on the weighted-average principal balance when considering timing of new investments, pay-offs, restructurings, write-offs, and accrual status changes, as applicable.

The weighted-average yield on our interest-bearing investments, excluding cash and cash equivalents and receipts recorded as dividend and success fee income, was 14.4% for the three months ended December 31, 2023, compared to 13.4% for the prior year period. The weighted-average yield may vary from period to period, based on the current stated interest rate on interest-bearing investments, coupled with any collection of past due interest during the period.

As of December 31, 2023, our loans to Edge Adhesives Holdings, Inc. ("Edge"), J.R. Hobbs Co. – Atlanta, LLC ("J.R. Hobbs") and The Mountain Corporation ("The Mountain") were on non-accrual status, with an aggregate debt cost basis of $66.9 million. As of December 31, 2022, our loans to Edge, J.R. Hobbs and The Mountain were on non-accrual status, with an aggregate debt cost basis of $66.6 million.

Dividend and success fee income for the three months ended December 31, 2023 decreased $4.1 million, or 75.0%, from the prior year period. During the three months ended December 31, 2023, dividend and success fee income consisted of $1.4 million of success fee income. During the three months ended December 31, 2022, dividend and success fee income consisted of $4.5 million of dividend income and $1.1 million of success fee income.

As of December 31, 2023, SFEG represented 10.2% of the total investment portfolio at fair value. As of March 31, 2023, no single investment represented greater than 10% of the total investment portfolio at fair value.

Expenses

Total expenses, net of any non-contractual, unconditional, and irrevocable credits from the Adviser, increased $0.3 million, or 2.4%, during the three months ended December 31, 2023, as compared to the prior year period, primarily due to an increase in interest expense and base management fee, partially offset by a decrease in incentive fees and an increase in credits from the Adviser.

In accordance with GAAP, during the three months ended December 31, 2023, we recorded a $0.6 million reversal of previously accrued capital gains-based incentive fee compared to a capital gains-based incentive fee of $1.4 million during the three months ended December 31, 2022. The capital gains-based incentive fee is a result of the net impact of net realized gains and net unrealized appreciation (depreciation) on investments during the respective periods. The income-based incentive fee decreased by $0.2 million, for the three months ended December 31, 2023, as compared to the prior year period, primarily due to a decrease in pre-incentive fee net investment income and an increase in net assets, which drives the hurdle rate.

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The base management fee, loan servicing fee, incentive fee, and their related non-contractual, unconditional, and irrevocable credits are computed quarterly, as described under “Transactions with the Adviser” in Note 4 — Related Party Transactions in the accompanying Notes to Consolidated Financial Statements and are summarized in the following table:

	Three Months Ended December 31,
	2023			2022
Average total assets subject to base management fee(A)	$	920,400		$	757,800
Multiplied by prorated annual base management fee of 2.0%	0.5		%	0.5		%
Base management fee(B)	$	4,602		$	3,789
Credits to fees from Adviser - other(B)	(1,793)			(756)
Net base management fee	$	2,809		$	3,033
Loan servicing fee(B)	$	2,332		$	2,080
Credits to base management fee - loan servicing fee(B)	(2,332)			(2,080)
Net loan servicing fee	$	—		$	—
Incentive fee – income-based	$	2,282		$	2,503
Incentive fee – capital gains-based(C)	(615)			1,442
Total incentive fee(B)	$	1,667		$	3,945
Credits to fees from Adviser - other(B)	—			—
Net total incentive fee	$	1,667		$	3,945

(A)Average total assets subject to the base management fee is defined in the Advisory Agreement as total assets, including investments made with proceeds of borrowings, less any uninvested cash or cash equivalents resulting from borrowings, valued at the end of the applicable quarters within the respective periods and adjusted appropriately for any share issuances or repurchases during the periods.

(B)Reflected as a line item on our Consolidated Statements of Operations.

(C)The capital gains-based incentive fees are recorded in accordance with GAAP and do not necessarily reflect amounts contractually due under the terms of the Advisory Agreement.

Interest expense increased $2.4 million, or 60.0%, during the three months ended December 31, 2023, as compared to the prior year period, primarily due to interest expense related to the 8.00% 2028 Notes issued in May 2023 and increased borrowings on the Credit Facility, partially offset by a decrease in the effective interest rate. The weighted-average balance outstanding under the Credit Facility during the three months ended December 31, 2023 was $77.4 million, compared to $26.1 million in the prior year period. The effective interest rate on the Credit Facility, excluding the impact of deferred financing costs, during the three months ended December 31, 2023 was 9.2%, as compared to 12.8% in the prior year period. The decrease in the effective interest rate on the Credit Facility was primarily a result of the decrease in the unused fee associated with the undrawn portion of the Credit Facility, partially offset by an increase in interest rates.

Other expenses increased $0.2 million, or 17.2%, during the three months ended December 31, 2023, as compared to the prior year period, due to an increase in bad debt expense and and professional fees.

51

Realized and Unrealized Gain (Loss)

The realized gains (losses) and unrealized appreciation (depreciation) across our investments for the three months ended December 31, 2023 and 2022 were as follows:

	Three Months Ended December 31, 2023
Portfolio Company	Realized Gain (Loss)		Unrealized Appreciation (Depreciation)		Reversal of Unrealized (Appreciation) Depreciation		Net Gain (Loss)
Dema/Mai Holdings, Inc.	$	—	$	5,655	$	—	$	5,655
Nth Degree Investment Group, LLC	—		3,274		—		3,274
Educators Resources, Inc.	—		2,229		—		2,229
Brunswick Bowling Products, Inc.	—		1,319		—		1,319
ImageWorks Display and Marketing Group, Inc.	—		1,205		—		1,205
Counsel Press, Inc.	43,459		—		(43,566)		(107)
Horizon Facilities Service, Inc.	—		(1,204)		—		(1,204)
Home Concepts Acquisition, Inc.	—		(1,565)		—		(1,565)
Nocturne Villas Rentals, Inc.	—		(2,420)		—		(2,420)
Mason West, LLC	—		(2,484)		—		(2,484)
PSI Molded Plastics, Inc.	—		(4,401)		—		(4,401)
B+T Group Acquisition, Inc.	—		(4,811)		—		(4,811)
Other, net (<$1.0 million, net)	2		235		—		237
Total	$	43,461	$	(2,968)	$	(43,566)	$	(3,073)

	Three Months Ended December 31, 2022
Portfolio Company	Realized Gain (Loss)		Unrealized Appreciation (Depreciation)		Reversal of Unrealized (Appreciation) Depreciation		Net Gain (Loss)
Brunswick Bowling Products, Inc.	$	—	$	7,275	$	—	$	7,275
Mason West, LLC	—		5,281		—		5,281
Old World Christmas, Inc.	13,371		(8,601)		—		4,770
Dema/Mai Holdings, Inc.	—		3,877		—		3,877
Nth Degree Investment Group, LLC	—		3,845		—		3,845
Schylling, Inc.	—		2,977		—		2,977
PSI Molded Plastics, Inc.	—		2,976		—		2,976
The Mountain Corporation	(10,000)		—		10,000		—
ImageWorks Display and Marketing Group, Inc.	—		(920)		—		(920)
Educators Resources, Inc.	—		(1,299)		—		(1,299)
J.R. Hobbs Co. - Atlanta, LLC	—		(2,398)		—		(2,398)
Galaxy Technologies Holding, Inc.	—		(3,255)		—		(3,255)
B+T Group Acquisition, Inc.	—		(3,747)		—		(3,747)
Nocturne Villas Rentals, Inc.	—		(4,182)		—		(4,182)
Horizon Facilities Service, Inc.	—		(8,267)		—		(8,267)
Other, net (<$1.0 million, net)	473		(197)		1		277
Total	$	3,844	$	(6,635)	$	10,001	$	7,210

Net Realized Gain (Loss)

During the three months ended December 31, 2023, we recorded net realized gains on investments of $43.5 million, primarily due to a $43.5 million realized gain from the exit of Counsel Press. During the three months ended December 31, 2022, we recorded net realized gains on investments of $3.8 million, primarily due to a $13.4 million realized gain from the recapitalization of Old World and $0.5 million of realized gains related to prior period exits of certain investments, partially offset by the $10.0 million realized loss recognized in conjunction with the replacement of our existing investment in The Mountain.

52

Net Unrealized Appreciation (Depreciation)

Net unrealized depreciation of investments of $46.5 million for the three months ended December 31, 2023 was primarily due to the reversal of unrealized appreciation of Counsel Press upon exit, a decrease in transaction multiples used to estimate the fair value of certain of our portfolio companies and a decrease in performance of certain of our portfolio companies. These decreases were partially offset by increased performance of certain of our other portfolio companies.

Net unrealized appreciation of investments of $3.4 million for the three months ended December 31, 2022 was primarily due to the reversal of unrealized depreciation of our investment in The Mountain upon the replacement of the existing investment, partially offset by net unrealized depreciation across our portfolio. The net unrealized depreciation was driven by decreased performance of certain of our portfolio companies and decreased comparable transaction multiples used to estimate the fair value of certain of our portfolio companies. These amounts were partially offset by increased performance of certain of our other portfolio companies, driven partially by the reversal of the impact of COVID-19 on certain of our portfolio companies and the markets in which they operate. In part, the performance of certain of our portfolio companies was driven by the impact COVID-19, and its variants, has had on our portfolio companies and the markets in which they operate, including government restrictions on the portfolio companies’ ability to operate under historical conditions, current and future shutdowns and reopening restrictions, operating challenges, including but not limited to, labor shortages, supply chain delays, increased material costs and demand for their products, and general economic outlook, or the reversal of such impact towards pre-COVID-19 levels.

Across our entire investment portfolio, we recorded net unrealized depreciation of $33.9 million on our equity positions and net unrealized depreciation of $12.6 million on our debt positions for the three months ended December 31, 2023. As of December 31, 2023, the fair value of our investment portfolio was more than the cost basis by $34.3 million, as compared to September 30, 2023, when the fair value of our investment portfolio was more than the cost basis by $80.8 million, representing net unrealized depreciation of $46.5 million for the three months ended December 31, 2023. Our entire portfolio had a fair value of 103.9% of cost as of December 31, 2023.

53

Comparison of the Nine Months Ended December 31, 2023 to the Nine Months Ended December 31, 2022

	For the Nine Months Ended December 31,
	2023		2022		$ Change		% Change
INVESTMENT INCOME
Interest income	$	60,369	$	43,045	$	17,324	40.2	%
Dividend and success fee income	3,289		18,641		(15,352)		(82.4)	%
Total investment income	63,658		61,686		1,972		3.2	%
EXPENSES
Base management fee	12,874		10,965		1,909		17.4	%
Loan servicing fee	6,829		5,754		1,075		18.7	%
Incentive fee	15,401		7,722		7,679		99.4	%
Administration fee	1,306		1,352		(46)		(3.4)	%
Interest expense	17,598		11,715		5,883		50.2	%
Amortization of deferred financing costs and discounts	1,708		1,350		358		26.5	%
Other	3,434		4,357		(923)		(21.2)	%
Expenses before credits from Adviser	59,150		43,215		15,935		36.9	%
Credits to fees from Adviser	(11,946)		(8,885)		(3,061)		34.5	%
Total expenses, net of credits to fees	47,204		34,330		12,874		37.5	%
NET INVESTMENT INCOME	16,454		27,356		(10,902)		(39.9)	%
REALIZED AND UNREALIZED GAIN (LOSS)
Net realized gain	44,905		10,598		34,307		323.7	%
Net unrealized appreciation (depreciation)	1,362		(7,065)		8,427		NM
Net realized and unrealized gain (loss)	46,267		3,533		42,734		NM
NET INCREASE IN NET ASSETS RESULTING FROM OPERATIONS	$	62,721	$	30,889	$	31,832	103.1	%
WEIGHTED-AVERAGE SHARES OF COMMON STOCK OUTSTANDING
Basic and diluted	33,921,300		33,246,811		674,489		2.03	%
BASIC AND DILUTED PER COMMON SHARE:
Net investment income	$	0.49	$	0.82	$	(0.33)	(40.2)	%
Net increase in net assets resulting from operations	$	1.85	$	0.93	$	0.92	98.9	%

NM = Not Meaningful

54

Investment Income

Total investment income increased $2.0 million, or 3.2%, for the nine months ended December 31, 2023, as compared to the prior year period, primarily due to an increase in interest income, partially offset by a decrease in dividend and success fee income.

Interest income from our investments in debt securities increased $17.3 million, or 40.2%, for the nine months ended December 31, 2023, as compared to the prior year period. Generally, the level of interest income from investments is directly related to the principal balance of our interest-bearing investment portfolio outstanding during the period, multiplied by the weighted-average yield.

The weighted-average principal balance of our interest-bearing investment portfolio during the nine months ended December 31, 2023 was $544.6 million, compared to $457.9 million for the prior year period. This increase was primarily due to $119.8 million of follow-on debt investments in existing portfolio companies, the origination of $85.8 million of new debt investments, and $14.9 million of loans returned to accrual status, partially offset by $84.9 million of pay-offs, restructurings, or write-offs of debt investments and $9.2 million of loans placed on non-accrual status after March 31, 2022, and their respective impact on the weighted-average principal balance when considering timing of new investments, pay-offs, restructurings, write-offs, and accrual status changes, as applicable.

The weighted-average yield on our interest-bearing investments, excluding cash and cash equivalents and receipts recorded as dividend and success fee income, was 14.5% for the nine months ended December 31, 2023, compared to 12.5% for the prior year period. The weighted-average yield may vary from period to period, based on the current stated interest rate on interest-bearing investments, coupled with any collection of past due interest during the period. During the nine months ended December 31, 2023 and 2022, we had no collections of past due interest.

As of December 31, 2023, our loans to Edge, J.R. Hobbs and The Mountain were on non-accrual status, with an aggregate debt cost basis of $66.9 million. As of December 31, 2022, our loans to Edge, J.R. Hobbs and The Mountain were also on non-accrual status, with an aggregate debt cost basis of $66.6 million.

Dividend and success fee income for the nine months ended December 31, 2023 decreased $15.4 million, or 82.4% from the prior year period. During the nine months ended December 31, 2023, dividend and success fee income consisted of $1.9 million of dividend income and $1.4 million of success fee income. During the nine months ended December 31, 2022, dividend and success fee income consisted of $10.8 million of dividend income and $7.8 million of success fee income.

As of December 31, 2023, SFEG represented 10.2% of the total investment portfolio at fair value. As of March 31, 2023, no single investment represented greater than 10% of the total investment portfolio at fair value.

Expenses

Total expenses, net of any non-contractual, unconditional, and irrevocable credits from the Adviser, increased $12.9 million, or 37.5%, during the nine months ended December 31, 2023, as compared to the prior year period, primarily due to an increase in incentive fees, interest expense and base management fee, partially offset by an increase in credits from the Adviser.

In accordance with GAAP, we recorded a $9.3 million capital gains-based incentive fee during the nine months ended December 31, 2023, compared to a $0.7 million capital gains-based incentive fee recorded during the nine months ended December 31, 2022. The capital gains-based incentive fee was a result of the net impact of net realized gains and net unrealized appreciation (depreciation) on investments during the respective periods. The income-based incentive fee decreased by $0.9 million for the nine months ended December 31, 2023, as compared to the prior year period, primarily due to a decrease in pre-incentive fee net investment income and an increase in net assets, which drives the hurdle rate.

55

The base management fee, loan servicing fee, incentive fee, and their related non-contractual, unconditional, and irrevocable credits are computed quarterly, as described under “Transactions with the Adviser” in Note 4 — Related Party Transactions in the accompanying Notes to Consolidated Financial Statements and are summarized in the following table:

	Nine Months Ended December 31,
	2023			2022
Average total assets subject to base management fee(A)	$	858,267		$	731,000
Multiplied by prorated annual base management fee of 2.0%	1.5		%	1.5		%
Base management fee(B)	$	12,874		$	10,965
Credits to fees from Adviser - other(B)	(5,117)			(3,131)
Net base management fee	$	7,757		$	7,834
Loan servicing fee(B)	$	6,829		$	5,754
Credits to base management fee - loan servicing fee(B)	(6,829)			(5,754)
Net loan servicing fee	$	—		$	—
Incentive fee – income-based	$	6,142		$	7,016
Incentive fee – capital gains-based(C)	9,259			706
Total incentive fee(B)	$	15,401		$	7,722
Credits to fees from Adviser - other(B)	—			—
Net total incentive fee	$	15,401		$	7,722

(A)Average total assets subject to the base management fee is defined in the Advisory Agreement as total assets, including investments made with proceeds of borrowings, less any uninvested cash or cash equivalents resulting from borrowings, valued at the end of the applicable quarters within the respective periods and adjusted appropriately for any share issuances or repurchases during the periods.

(B)Reflected as a line item on our Consolidated Statements of Operations.

(C)The capital gains-based incentive fees are recorded in accordance with GAAP and do not necessarily reflect amounts contractually due under the terms of the Advisory Agreement.

Interest expense increased $5.9 million, or 50.2%, during the nine months ended December 31, 2023, as compared to the prior year period, primarily due to interest expense related to the 8.00% 2028 Notes issued in May 2023 and increased borrowings on the Credit Facility, partially offset by a decrease in the effective interest rate. The weighted-average balance outstanding on the Credit Facility during the nine months ended December 31, 2023 was $57.1 million as compared to $12.6 million in the prior year period. The effective interest rate on the Credit Facility, excluding the impact of deferred financing costs, during the nine months ended December 31, 2023 was 10.2%, as compared to 19.8% in the prior year period. The decrease in the effective interest rate on the Credit Facility was primarily a result of a decrease in unused commitment fees on the undrawn portion of the Credit Facility, partially offset by an increase in interest rates on the drawn portion of the Credit Facility.

Other expenses decreased $0.9 million, or 21.2%, during the nine months ended December 31, 2023, as compared to the prior year period, due to a decrease in professional fees, bad debt expense and tax expense.

56

Realized and Unrealized Gain (Loss)

The realized gains (losses) and unrealized appreciation (depreciation) across our investments for the nine months ended December 31, 2023 and 2022 were as follows:

	Nine Months Ended December 31, 2023
Portfolio Company	Realized Gain (Loss)		Unrealized Appreciation (Depreciation)		Reversal of Unrealized (Appreciation) Depreciation		Net Gain (Loss)
Counsel Press, Inc.	$	43,459	$	22,676	$	(43,566)	$	22,569
Nth Degree Investment Group, LLC	—		15,951		—		15,951
Educators Resource, Inc.	—		12,792		—		12,792
Brunswick Bowling Products, Inc.	—		9,630		—		9,630
Mason West, LLC	—		9,206		—		9,206
SFEG Holdings, Inc.	—		7,325		—		7,325
Dema/Mai Holdings, Inc.	—		3,780		—		3,780
Galaxy Technologies Holdings, Inc.	—		3,539		—		3,539
The Maids International, LLC	—		3,190		—		3,190
Utah Pacific Bridge & Steel, Ltd.	—		1,833		—		1,833
Ginsey Home Solutions, Inc.	—		1,476		—		1,476
Gladstone SOG Investments, Inc	882		—		(93)		789
J.R. Hobbs Co. - Atlanta, LLC	—		(741)		—		(741)
Nocturne Luxury Villas, Inc.	—		(806)		—		(806)
Old World Christmas, Inc.	273		(1,394)		—		(1,121)
Diligent Delivery Systems	—		(1,207)		—		(1,207)
Home Concepts Acquisition, Inc.	—		(1,565)		—		(1,565)
PSI Molded Plastics, Inc.	—		(5,635)		—		(5,635)
Horizon Facilities Services, Inc.	—		(6,963)		—		(6,963)
Schylling, Inc.	—		(8,546)		—		(8,546)
ImageWorks Display and Marketing Group, Inc.	—		(9,071)		—		(9,071)
B+T Group Acquisition, Inc.	—		(10,107)		—		(10,107)
Other, net (<$1.0 million, net)	291		(313)		—		(22)
Total	$	44,905	$	45,050	$	(43,659)	$	46,296

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	Nine Months Ended December 31, 2022
Portfolio Company	Realized Gain (Loss)		Unrealized Appreciation (Depreciation)		Reversal of Unrealized (Appreciation) Depreciation		Net Gain (Loss)
Brunswick Bowling Products, Inc	$	—	$	13,770	$	—	$	13,770
Nth Degree Investment Group, LLC	—		11,525		—		11,525
Old World Christmas, Inc.	13,371		(2,815)		—		10,556
Horizon Facilities Service, Inc.	2,218		5,461		—		7,679
Nocturne Villa Rentals, Inc.	—		4,635		—		4,635
Dema/Mai Holdings, Inc.	—		3,877		—		3,877
SFEG Holdings, Inc.	—		3,505		—		3,505
Mason West, LLC	—		3,343		—		3,343
Counsel Press, Inc.	—		2,165		—		2,165
Schylling Inc.	—		1,633		—		1,633
Utah Pacific Bridge & Steel, Ltd.	—		(1,206)		—		(1,206)
Educators Resources, Inc.	—		(1,614)		—		(1,614)
The Maids International, LLC	—		(2,679)		—		(2,679)
The Mountain Corporation	(10,000)		(2,930)		10,000		(2,930)
Ginsey Home Solutions, Inc.	—		(3,263)		—		(3,263)
ImageWorks Display and Marketing Group, Inc.	—		(3,273)		—		(3,273)
Galaxy Technologies Holdings, Inc.	—		(4,804)		—		(4,804)
Edge Adhesives Holdings, Inc	—		(5,395)		—		(5,395)
Bassett Creek Services, Inc.	5,188		—		(12,250)		(7,062)
B+T Group Acquisition, Inc	—		(13,014)		—		(13,014)
J.R. Hobbs Co. – Atlanta, LLC	—		(13,966)		—		(13,966)
Other, net (<$1.0 million, net)	(179)		244		(14)		51
Total	$	10,598	$	(4,801)	$	(2,264)	$	3,533

Net Realized Gain (Loss)

During the nine months ended December 31, 2023, we recorded net realized gains on investments of $44.9 million, primarily due to a $43.5 million realized gain from the exit of Counsel Press, $1.2 million of realized gains related to certain prior period exits and $0.3 million of realized gain from the recapitalization of Old World. During the nine months ended December 31, 2022, we recorded net realized gains on investments of $10.6 million, primarily due to a $13.4 million realized gain from the recapitalization of Old World, $5.2 million of realized gains from the exit of Bassett Creek, of which $0.5 million was received in the three months ended December 31, 2022, and a $2.2 million realized gain from the recapitalization of Horizon. These amounts were partially offset by the $10.0 million realized loss recognized in conjunction with the replacement of the existing investment in The Mountain and $0.2 million of net realized losses related to prior period exits of certain investments.

58

Net Unrealized Appreciation (Depreciation)

Net unrealized appreciation of investments of $1.4 million for the nine months ended December 31, 2023 was primarily due to increased performance of certain of our portfolio companies and an increase in transaction multiples used to estimate the fair value of certain of our portfolio companies. These increases were partially offset by a reversal of unrealized appreciation of Counsel Press upon exit and decreased performance of certain of our other portfolio companies.

Net unrealized depreciation of investments of $7.1 million for the nine months ended December 31, 2022 was primarily due to the net unrealized depreciation across our portfolio as well as the reversal of unrealized appreciation of our investment in Bassett Creek upon its exit and the reversal of unrealized depreciation of our investment in The Mountain upon the replacement of our existing investment. The net depreciation was driven primarily by decreased performance of certain of our other portfolio companies and decreased comparable transaction multiples used to estimate the fair value of certain of our portfolio companies. These decreases were partially offset by increased performance of certain of our portfolio companies, driven partially by the reversal of the impact of COVID-19 on certain of our portfolio companies and the markets in which they operate. In part, the performance of certain of our portfolio companies was driven by the impact COVID-19, and its variants, has had on our portfolio companies and the markets in which they operate, including government restrictions on the portfolio companies’ ability to operate under historical conditions, current and future shutdowns and reopening restrictions, operating challenges, including but not limited to, labor shortages, supply chain delays, increased material costs and demand for their products, and general economic outlook, or the reversal of such impact towards pre-COVID-19 levels.

Across our entire investment portfolio, we recorded net unrealized appreciation of $11.1 million on our equity positions and depreciation of $9.7 million on our debt positions, for the nine months ended December 31, 2023. As of December 31, 2023, the fair value of our investment portfolio was more than the cost basis by $34.3 million, as compared to March 31, 2023, when the fair value of our investment portfolio was more than the cost basis by $32.9 million, representing net unrealized appreciation of $1.4 million for the nine months ended December 31, 2023. Our entire portfolio had a fair value of 103.9% of cost as of December 31, 2023.

59

LIQUIDITY AND CAPITAL RESOURCES

Operating Activities

Net cash used in operating activities for the nine months ended December 31, 2023 was $75.7 million compared to net cash used in operating activities of $13.4 million for the nine months ended December 31, 2022. This change was primarily due to an increase in purchases of investments.

Purchases of investments were $183.0 million during the nine months ended December 31, 2023, compared to $133.5 million during the nine months ended December 31, 2022. Aggregate net proceeds from the sale and recapitalization of investments totaled $79.7 million during the nine months ended December 31, 2023, compared to $85.8 million during the nine months ended December 31, 2022.

As of December 31, 2023, we had equity investments in and/or loans to 25 portfolio companies with an aggregate cost basis of $868.5 million. As of December 31, 2022, we had equity investments in and/or loans to 25 portfolio companies with an aggregate cost basis of $722.4 million.

The following table summarizes our total portfolio investment activity during the nine months ended December 31, 2023 and 2022:

	Nine Months Ended December 31,
	2023		2022
Beginning investment portfolio, at fair value	$	753,543	$	714,396
New investments	61,258		60,050
Disbursements to existing portfolio companies	121,730		73,456
Unscheduled principal repayments (A)	(27,500)		(55,398)
Net proceeds from sale and recapitalization of investments	(52,228)		(35,533)
Net realized gain on investments	44,614		10,545
Net unrealized appreciation (depreciation) of investments	45,050		(4,801)
Reversal of net unrealized appreciation of investments	(43,659)		(2,264)
Amortization of premiums, discounts, and acquisition costs, net	—		12
Ending investment portfolio, at fair value	$	902,808	$	760,463

(A)The nine months ended December 31, 2022 includes $5.1 million of non-cash principal repayments related to the August 2022 refinancing at Ginsey.

The following table summarizes the contractual principal repayment and maturity of our investment portfolio by fiscal year, assuming no voluntary prepayments, as of December 31, 2023:

		Amount
For the remaining three months ending March 31, 2024		$	33,918
For the fiscal years ending March 31:
	2025	100,470
	2026	204,919
	2027	162,746
	2028	38,250
	Thereafter	125,394
	Total contractual repayments	$	665,697
	Investments in equity securities	202,807
	Total cost basis of investments held as of December 31, 2023:	$	868,504

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Financing Activities

Net cash provided by financing activities for the nine months ended December 31, 2023 was $76.1 million, which consisted primarily of $74.8 million of gross proceeds from the issuance of our 8.00% 2028 Notes, $47.4 million of net borrowings under the Credit Facility and $25.0 million proceeds from issuance of common stock, net of expenses and shelf offering registration costs, partially offset by $67.4 million in distributions to common stockholders and $3.7 million of deferred financing and offering costs.

Net cash provided by financing activities for the nine months ended December 31, 2022 was $1.8 million, which consisted primarily of $29.6 million of net borrowings under the Credit Facility and $3.4 million of proceeds from issuance of common stock, net of expenses and shelf offering registration costs, partially offset by $30.9 million in distributions to common stockholders.

Distributions and Dividends to Stockholders

Common Stock Distributions

To qualify to be taxed as a RIC and thus avoid corporate level federal income tax on the income we distribute to our stockholders, we are required, among other requirements, to distribute to our stockholders on an annual basis at least 90% of our taxable ordinary income plus the excess of our net short-term capital gains over net long-term capital losses (“Investment Company Taxable Income”), determined without regard to the dividends paid deduction. Additionally, the Credit Facility generally restricts the amount of distributions to stockholders that we can pay out to be no greater than the sum of certain amounts, including our net investment income, plus net capital gains, plus amounts elected by the Company to be considered as having been paid during the prior fiscal year in accordance with Section 855(a) of the Code. In accordance with these requirements, our Board of Directors declared, and we paid, monthly cash distributions of $0.08 per common share for each of the nine months from April through December 2023, and supplemental distributions of $0.12 per common share in June, September, and November 2023 and $0.88 per common share in December 2023. See also “Recent Developments - Distributions and Dividends” for a discussion of cash distributions to common stockholders declared by our Board of Directors in January 2024.

For the fiscal year ended March 31, 2023, Investment Company Taxable Income exceeded distributions declared and paid, and, in accordance with Section 855(a) of the Code, we elected to treat $21.4 million of the first distributions paid subsequent to fiscal year-end as having been paid in the prior year. In addition, for the fiscal year ended March 31, 2023, net capital gains exceeded distributions declared and paid, and, in accordance with Section 855(a) of the Code, we elected to treat $10.6 million of the first distributions paid subsequent to fiscal year-end as having been paid in the prior year. For the year ended March 31, 2023, we recorded $1.6 million of net adjustments for estimated permanent book-tax differences to reflect tax character, which decreased Capital in excess of par value and increased Overdistributed net investment income and Accumulated net realized gain in excess of distributions. For the nine months ended December 31, 2023, we recorded $0.4 million of net adjustments for estimated permanent book-tax differences to reflect tax character, which increased Overdistributed net investment income and decreased Accumulated net realized gain in excess of distributions and Capital in excess of par value.

Dividend Reinvestment Plan

Our common stockholders who hold their shares through our transfer agent, Computershare, Inc. (“Computershare”), have the option to participate in a dividend reinvestment plan offered by Computershare, as the plan agent. This is an “opt in” dividend reinvestment plan, meaning that common stockholders may elect to have their cash distributions automatically reinvested in additional shares of our common stock. Common stockholders who do not make such election will receive their distributions in cash. Any distributions reinvested under the plan will be taxable to a common stockholder to the same extent, and with the same character, as if the common stockholder had received the distribution in cash. The common stockholder generally will have an adjusted basis in the additional common shares purchased through the plan equal to the dollar amount that would have been received if the U.S. stockholder had received the dividend or distribution in cash. The additional common shares will have a new holding period commencing on the day following the date on which the shares are credited to the common stockholder’s account. Computershare purchases shares in the open market in connection with the obligations under the plan.

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Equity

Registration Statement

On September 3, 2021, we filed a registration statement on Form N-2 (File No. 333-259302), which the SEC declared effective on October 15, 2021. The registration statement permits us to issue, through one or more transactions, up to an aggregate of $300.0 million in securities, consisting of common stock, preferred stock, subscription rights, debt securities, and warrants to purchase common stock, preferred stock, or debt securities, including through concurrent, separate offerings of such securities. As of the date of this report, we have the ability to issue up to $194.5 million of the $300.0 million of securities registered under the registration statement.

Common Stock

In August 2022, we entered into equity distribution agreements with Oppenheimer & Co. and Virtu Americas LLC (each a “Sales Agent”), under which we have the ability to issue and sell shares of our common stock, from time to time, through the Sales Agents, having an aggregate offering price of up to $50.0 million in our Common Stock ATM Program. In August 2023, we entered into an equity distribution agreement with B. Riley Securities, Inc. and entered into amendments to the agreements with Oppenheimer & Co. Inc. and Virtu Americas LLC in order to add B. Riley Securities, Inc. as a Sales Agent for the Common Stock ATM Program. As of December 31, 2023, we had remaining capacity to sell up to an additional $19.3 million of common stock under the Common Stock ATM program.

During the three months ended December 31, 2023, we sold 1,456,279 shares of our common stock under the Common Stock ATM Program, with a weighted-average gross price of $14.51 per share and a weighted-average net price of $14.28 per share after deducting commissions and offering costs borne by us, raising approximately $21.1 million and $20.8 million of gross and net proceeds, respectively. During the nine months ended December 31, 2023, we sold 1,760,449 shares of common stock under the Common Stock ATM Program, with a weighted-average gross price of $14.34 per share and a weighted-average net price of $14.12 per share after deducting commissions and offering costs borne by us, raising approximately $25.3 million and $24.9 million of gross and net proceeds, respectively. All of these sales were above our then current estimated NAV per share.

During the three months ended December 31, 2022, we sold 212,338 shares of common stock under the Common Stock ATM Program, with a weighted-average gross price of $14.11 per share and a weighted-average net price of $13.91 per share after deducting commissions and offering costs borne by us, raising approximately $3.0 million of gross and net proceeds. During the nine months ended December 31, 2022, we sold 241,978 shares of common stock under the Common Stock ATM Program, with a weighted-average gross price of $14.31 per share and a weighted-average net price of $14.11 per share after deducting commissions and offering costs borne by us, raising approximately $3.5 million and $3.4 million of gross and net proceeds, respectively. All of these sales were above our then current estimated NAV per share.

Subsequent to December 31, 2023 and through February 6, 2024, we sold 538,206 shares of our common stock under our Common Stock ATM Program at a weighted-average gross price of $14.53 per share and raised approximately $7.7 million in net proceeds. All of these sales were above our then-current estimated NAV per share.

We anticipate issuing equity securities to obtain additional capital in the future. However, we cannot determine the timing or terms of any future equity issuances or whether we will be able to issue equity on terms favorable to us, or at all. When our common stock is trading at a price below NAV per share, the 1940 Act places regulatory constraints on our ability to obtain additional capital by issuing common stock. Generally, the 1940 Act provides that we may not issue and sell our common stock at a price below our NAV per common share, other than to our then-existing common stockholders pursuant to a rights offering, without first obtaining approval from our stockholders and our independent directors and meeting other stated requirements. As of December 31, 2023, the closing market price of our common stock was $14.15 per share, representing a 8.8% premium to our NAV per share of $13.01 as of December 31, 2023.

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Revolving Line of Credit

On October 30, 2023, we, through our wholly-owned subsidiary, Business Investment, entered into Amendment No. 8 to the Credit Facility with KeyBank as administrative agent, lead arranger, managing agent and lender, the Adviser, as servicer, and certain other lenders party thereto. Among other things, the revolving period was extended to October 30, 2026, and if not renewed or extended by such date, all principal and interest will be due and payable by October 30, 2028 (two years after the revolving period end date). Advances under the Credit Facility generally bear interest at 30-day Term SOFR, subject to a floor of 0.35%, plus 3.15% per annum until October 30, 2026, with the margin then increasing to 3.40% for the period from October 30, 2026 to October 30, 2027, and increasing further to 3.65% thereafter with a SOFR credit spread adjustment of 10 basis points. The Credit Facility has an unused commitment fee on the daily unused commitment amount of 0.50% per annum if the daily unused commitment amount is less than or equal to 50% of the total commitment amount, 0.75% per annum if the daily unused commitment amount is greater than 50% but less than or equal to 65% of the total commitment amount, and 1.00% per annum if the daily unused commitment amount is greater than 65% of the total commitment amount. The size of the Credit Facility was reduced from $180.0 million to $135.0 million.

Previously, on April 10, 2023, we, through our wholly-owned subsidiary, Business Investment, entered into Amendment No. 7 to the Credit Facility with KeyBank as administrative agent, lead arranger, managing agent and lender, the Adviser, as servicer, and certain other lenders party thereto. The reference rate was updated from LIBOR to Term SOFR plus an 11 basis point credit spread adjustment.

Previously, on March 8, 2021, we, through our wholly-owned subsidiary, Business Investment, entered into Amendment No. 6 to the Credit Facility with KeyBank as administrative agent, lead arranger, managing agent and lender, the Adviser, as servicer, and certain other lenders party thereto. The revolving period was extended to February 29, 2024, and if not renewed or extended by such date, all principal and interest will be due and payable on February 28, 2026 (two years after the revolving period end date).

At December 31, 2023, we had $82.6 million borrowings outstanding on the Credit Facility and as of the date of this report, we had $77.3 million outstanding under the Credit Facility.

Interest is payable monthly during the term of the Credit Facility. Available borrowings are subject to various constraints and applicable advance rates, which are generally based on the size, characteristics, and quality of the collateral pledged by Business Investment. The Credit Facility also requires that any interest and principal payments on pledged loans be remitted directly by the borrower into a lockbox account with KeyBank. KeyBank is also the trustee of the account and generally remits the collected funds to us once a month.

Among other things, the Credit Facility contains covenants that require Business Investment to maintain its status as a separate legal entity, prohibit certain significant corporate transactions (such as mergers, consolidations, liquidations or dissolutions) and restrict certain material changes to our credit and collection policies without the lenders’ consent. The Credit Facility also generally seeks to restrict distributions to stockholders to the sum of (i) our net investment income, (ii) net capital gains, and (iii) amounts deemed by the Company to be considered as having been paid during the prior fiscal year in accordance with Section 855(a) of the Code. Loans eligible to be pledged as collateral are subject to certain limitations, including, among other things, restrictions on geographic concentrations, industry concentrations, loan size, payment frequency and status, average life, portfolio company leverage, and lien property. The Credit Facility also requires Business Investment to comply with other financial and operational covenants, which obligate Business Investment to, among other things, maintain certain financial ratios, including asset and interest coverage and a minimum number of obligors required in the borrowing base. Additionally, the Credit Facility contains a performance guaranty that requires the Company to maintain (i) a minimum net worth of the greater of $210.0 million or $210.0 million plus 50% of all equity and subordinated debt raised, minus 50% of any equity or subordinated debt redeemed or retired after November 16, 2016, which equated to $339.0 million as of December 31, 2023, (ii) asset coverage with respect to senior securities representing indebtedness of at least 150% (or such percentage as may be set forth in Section 18 of the 1940 Act, as modified by Section 61 of the 1940 Act), and (iii) our status as a BDC under the 1940 Act and as a RIC under the Code. As of December 31, 2023, and as defined in the performance guaranty of the Credit Facility, we had a net worth of $789.8 million, asset coverage on our senior securities representing indebtedness of 206.9%, calculated in compliance with the requirements of Sections 18 and 61 of the 1940 Act, and an active status as a BDC and RIC. As of December 31, 2023, we had availability, after adjustments for various constraints based on collateral quality, of $52.4 million under the Credit Facility and were in compliance with all covenants under the Credit Facility.

See "Recent Developments - Revolving Line of Credit".

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Notes Payable

5.00% Notes due 2026

In March 2021, we completed a public offering of the 5.00% 2026 Notes with an aggregate principal amount of $127.9 million, which resulted in net proceeds of approximately $123.8 million after deducting underwriting discounts, commissions and offering costs borne by us. The 5.00% 2026 Notes are traded under the ticker symbol “GAINN” on Nasdaq. The 5.00% 2026 Notes will mature on May 1, 2026 and may be redeemed in whole or in part at any time or from time to time at the Company’s option. The 5.00% 2026 Notes bear interest at a rate of 5.00% per year (which equates to $6.4 million per year), payable quarterly in arrears.

The indenture relating to the 5.00% 2026 Notes contains certain covenants, including (i) an inability to incur additional debt or issue additional debt or preferred securities unless the Company’s asset coverage meets the threshold specified in the 1940 Act after such borrowing, (ii) an inability to declare any dividend or distribution (except a dividend payable in our stock) on a class of our capital stock or to purchase shares of our capital stock unless the Company’s asset coverage meets the threshold specified in the 1940 Act at the time of (and giving effect to) such declaration or purchase, and (iii) if, at any time, we are not subject to the reporting requirements of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), we will provide the holders of the 5.00% 2026 Notes and the trustee with audited annual consolidated financial statements and unaudited interim consolidated financial statements.

The 5.00% 2026 Notes are recorded at the aggregate principal amount, less underwriting discounts, commissions, and offering costs, on our accompanying Consolidated Statements of Assets and Liabilities. Total underwriting discounts, commissions, and offering costs related to this offering were $4.1 million, which have been recorded as discounts to the aggregate principal amount on our accompanying Consolidated Statements of Assets and Liabilities and are being amortized over the period ending May 1, 2026, the maturity date.

4.875% Notes due 2028

In August 2021, we completed a public offering of the 4.875% 2028 Notes with an aggregate principal amount of $134.6 million, which resulted in net proceeds of approximately $131.3 million after deducting underwriting discounts, commissions and offering costs borne by us. The 4.875% 2028 Notes are traded under the ticker symbol “GAINZ” on Nasdaq. The 4.875% 2028 Notes will mature on November 1, 2028 and may be redeemed in whole or in part at any time or from time to time at the Company’s option. The 4.875% 2028 Notes bear interest at a rate of 4.875% per year (which equates to $6.6 million per year), payable quarterly in arrears.

The indenture relating to the 4.875% 2028 Notes contains certain covenants, including (i) an inability to incur additional debt or issue additional debt or preferred securities unless the Company’s asset coverage meets the threshold specified in the 1940 Act after such borrowing, (ii) an inability to declare any dividend or distribution (except a dividend payable in our stock) on a class of our capital stock or to purchase shares of our capital stock unless the Company’s asset coverage meets the threshold specified in the 1940 Act at the time of (and giving effect to) such declaration or purchase, and (iii) if, at any time, we are not subject to the reporting requirements of the Exchange Act, we will provide the holders of the 4.875% 2028 Notes and the trustee with audited annual consolidated financial statements and unaudited interim consolidated financial statements.

The 4.875% 2028 Notes are recorded at the aggregate principal amount, less underwriting discounts, commissions, and offering costs, on our accompanying Consolidated Statements of Assets and Liabilities. Total underwriting discounts, commissions, and offering costs related to this offering were $3.3 million, which have been recorded as discounts to the aggregate principal amount on our accompanying Consolidated Statements of Assets and Liabilities and are being amortized over the period ending November 1, 2028, the maturity date.

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8.00% Notes due 2028

In May 2023, we completed a public offering of the 8.00% 2028 Notes with an aggregate principal amount of $74.8 million, which resulted in net proceeds of approximately $72.3 million after deducting underwriting discounts, commissions and offering costs borne by us. The 8.00% 2028 Notes are traded under the ticker symbol “GAINL” on Nasdaq. The 8.00% 2028 Notes will mature on August 1, 2028 and may be redeemed in whole or in part at any time or from time to time at the Company’s option on or after August 1, 2025. The 8.00% 2028 Notes bear interest at a rate of 8.00% per year (which equates to $6.0 million per year), payable quarterly in arrears.

The indenture relating to the 8.00% 2028 Notes contains certain covenants, including (i) an inability to incur additional debt or issue additional debt or preferred securities unless the Company’s asset coverage meets the threshold specified in the 1940 Act after such borrowing, (ii) an inability to declare any dividend or distribution (except a dividend payable in our stock) on a class of our capital stock or to purchase shares of our capital stock unless the Company’s asset coverage meets the threshold specified in the 1940 Act at the time of (and giving effect to) such declaration or purchase, and (iii) if, at any time, we are not subject to the reporting requirements of the Exchange Act, we will provide the holders of the 8.00% 2028 Notes and the trustee with audited annual consolidated financial statements and unaudited interim consolidated financial statements.

The 8.00% 2028 Notes are recorded at the aggregate principal amount, less underwriting discounts, commissions, and offering costs, on our accompanying Consolidated Statements of Assets and Liabilities. Total underwriting discounts, commissions, and offering costs related to this offering were $2.5 million, which have been recorded as discounts to the aggregate principal amount on our accompanying Consolidated Statements of Assets and Liabilities and are being amortized over the period ending August 1, 2028, the maturity date.

OFF-BALANCE SHEET ARRANGEMENTS

Unlike PIK income, we generally do not recognize success fees as income until payment has been received. Due to the contingent nature of success fees, there are no guarantees that we will be able to collect any or all of these success fees or know the timing of any such collections. As a result, as of December 31, 2023 and March 31, 2023, we had unrecognized, contractual off-balance sheet success fee receivables of $61.8 million and $53.6 million (or approximately $1.75 and $1.60 per common share), respectively, on our debt investments. Consistent with GAAP, we have not recognized success fee receivables and related income in our accompanying Consolidated Financial Statements until earned.

CONTRACTUAL OBLIGATIONS

We have line of credit commitments to certain of our portfolio companies that have not been fully drawn. Since these line of credit commitments have expiration dates and we expect many will never be fully drawn, the total line of credit commitment amounts do not necessarily represent future cash requirements. We estimate the fair value of the combined unused line of credit commitments as of December 31, 2023 to be insignificant.

The following table shows our contractual obligations as of December 31, 2023, at cost:

	Payments Due by Period
Contractual Obligations(A)	Total		Less than 1 Year		1-3 Years		3-5 Years		More than 5 Years
Credit Facility(B)	$	82,600	$	—	$	—	$	82,600	$	—
Notes payable	337,238		—		127,938		209,300		—
Interest payments on obligations(C)	110,798		26,429		48,587		35,782		—
Total	$	530,636	$	26,429	$	176,525	$	327,682	$	—

(A)Excludes unused line of credit commitments to our portfolio companies in the aggregate principal of $1.5 million.

(B)Principal balance of borrowings outstanding under the Credit Facility, based on the maturity date following the current contractual revolving period end date.

(C)Includes interest payments due on the Credit Facility, 5.00% 2026 Notes, 4.875% 2028 Notes and 8.00% 2028 Notes, as applicable. The amount of interest payments calculated for purposes of this table was based upon rates and outstanding balances as of December 31, 2023.

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Critical Accounting Estimates

The preparation of financial statements and related disclosures in conformity with GAAP requires management to make estimates and assumptions that affect the reported consolidated amounts of assets and liabilities, including disclosure of contingent assets and liabilities at the date of the financial statements, and revenues and expenses during the period reported. Actual results could differ materially from those estimates under different assumptions or conditions. We have identified our investment valuation policy (which has been approved by our Board of Directors) as our most critical accounting policy, which is described in Note 2 — Summary of Significant Accounting Policies in the accompanying Notes to Consolidated Financial Statements included elsewhere in this Quarterly Report. Additionally, refer to Note 3 — Investments in the accompanying Notes to Consolidated Financial Statements included elsewhere in this Quarterly Report for additional information regarding fair value measurements and our application of Financial Accounting Standards Board Accounting Standards Codification Topic 820, “Fair Value Measurements and Disclosures.” We have also identified our revenue recognition policy as a critical accounting policy, which is described in Note 2 — Summary of Significant Accounting Policies in the accompanying Notes to Consolidated Financial Statements included elsewhere in this Quarterly Report.

Investment Valuation

Credit Monitoring and Risk Rating

The Adviser monitors a wide variety of key credit statistics that provide information regarding our portfolio companies to help us assess credit quality and portfolio performance and, in some instances, are used as inputs in our valuation techniques. Generally, we, through the Adviser, participate in periodic board meetings of our portfolio companies in which we hold board seats and also require them to provide annual audited and monthly unaudited financial statements. Using these statements or comparable information and board discussions, the Adviser calculates and evaluates certain credit statistics.

The Adviser risk rates all of our investments in debt securities. The Adviser does not risk rate equity securities. For loans that have been rated by a SEC-registered Nationally Recognized Statistical Rating Organization (“NRSRO”), the Adviser generally uses the average of two corporate level NRSRO’s risk ratings for such security. For all other debt securities, the Adviser uses a proprietary risk rating system. While the Adviser seeks to mirror the NRSRO systems, we cannot provide any assurance that the Adviser’s risk rating system will provide the same risk rating as an NRSRO for these securities. The Adviser’s risk rating system is used to estimate the probability of default on debt securities and the expected loss, if there is a default. The Adviser’s risk rating system uses a scale of 0 to >10, with >10 being the lowest probability of default. It is the Adviser’s understanding that most debt securities of Lower Middle Market companies do not exceed the grade of BBB on an NRSRO scale, so there would be no debt securities in the Lower Middle Market that would meet the definition of AAA, AA or A. Therefore, the Adviser’s scale begins with the designation >10 as the best risk rating which may be equivalent to a BBB from an NRSRO; however, no assurance can be given that a >10 on the Adviser’s scale is equal to a BBB or Baa2 on an NRSRO scale. The Adviser’s risk rating system covers both qualitative and quantitative aspects of the business and the securities we hold.

The following table reflects risk ratings for all loans in our portfolio as of December 31, 2023 and March 31, 2023:

Rating	December 31, 2023	March 31, 2023
Highest	9.0	9.0
Average	6.2	6.4
Weighted-average	6.8	7.3
Lowest	1.0	1.0

Tax Status

We intend to continue to maintain our qualification as a RIC under Subchapter M of the Code for U.S. federal income tax purposes. As a RIC, we generally are not subject to U.S. federal income tax on the portion of our taxable income and gains distributed to our stockholders. To maintain our qualification as a RIC, we must maintain our status as a BDC and meet certain source-of-income and asset diversification requirements. In addition, to qualify to be taxed as a RIC, we must distribute to stockholders at least 90% of our Investment Company Taxable Income, determined without regard to the dividends paid deduction. Our policy generally is to make distributions to our stockholders in an amount up to 100% of Investment Company Taxable Income. We may retain some or all of our net long-term capital gains, if any, and designate

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them as deemed distributions, or distribute such gains to stockholders in cash. See “— Liquidity and Capital Resources — Distributions and Dividends to Stockholders.”

In an effort to limit federal excise taxes, we have to distribute to stockholders, during each calendar year, an amount close to the sum of: (1) 98% of our ordinary income for the calendar year, (2) 98.2% of our net capital gains (both long-term and short-term), if any, for the one-year period ending on October 31 of the calendar year, and (3) any income realized, but not distributed, in the preceding period (to the extent that income tax was not imposed on such amounts), less certain reductions, as applicable. Under the RIC Modernization Act, we are permitted to carryforward any capital losses that we may incur for an unlimited period, and such capital loss carryforwards will retain their character as either short-term or long-term capital losses. Our capital loss carryforward balance was $0 as of both December 31, 2023 and March 31, 2023.

Recent Accounting Pronouncements

Refer to Note 2 — Summary of Significant Accounting Policies in the accompanying Notes to Consolidated Financial Statements included elsewhere in this Quarterly Report for a description of recent accounting pronouncements.

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ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Market risk includes risks that arise from changes in interest rates, foreign currency exchange rates, commodity prices, equity prices and other market changes that affect market sensitive instruments. The prices of securities held by us may decline in response to certain events, including those directly involving the companies whose securities are owned by us; conditions affecting the general economy, including public health emergencies; overall market changes; local, regional or global political, social or economic instability; and interest rate fluctuations.

The primary risk we believe we are exposed to is interest rate risk. Because we borrow money to make investments, our net investment income is dependent upon the difference between the rates at which we borrow funds, such as under the Credit Facility (which is variable) and our unsecured notes (which are fixed), and the rates at which we invest those funds. As a result, there can be no assurance that a significant change in market interest rates will not have a material adverse effect on our net investment income. We use a combination of debt and equity capital to finance our investing activities. We may use interest rate risk management techniques to limit our exposure to interest rate fluctuations. Such techniques may include various interest rate hedging activities to the extent permitted by the 1940 Act.

We target to have approximately 90% of the loans in our portfolio at variable rates or variable rates with a floor mechanism, and up to approximately 10% at fixed rates. As of December 31, 2023 and March 31, 2023, all of our variable-rate loans have rates associated with the current 30-day SOFR rate and 30-day LIBOR rate, respectively, and our total debt investment portfolio consisted of the following breakdown based on the principal balance:

Rates:	December 31, 2023		March 31, 2023
Variable rates with a floor	100.0	%	100.0	%
Fixed rates	—		—	%
Total	100.0	%	100.0	%

There have been no material changes in the quantitative and qualitative market risk disclosures during the nine months ended December 31, 2023 from those included in our Annual Report.

ITEM 4. CONTROLS AND PROCEDURES.

a)Evaluation of Disclosure Controls and Procedures

As of December 31, 2023 (the end of the period covered by this report), we, including our chief executive officer and chief financial officer, evaluated the effectiveness, design and operation of our disclosure controls and procedures. Based on that evaluation, our management, including the chief executive officer and chief financial officer, concluded that our disclosure controls and procedures were effective at a reasonable assurance level in timely alerting management, including the chief executive officer and chief financial officer, of material information about us required to be included in periodic SEC filings. However, in evaluation of the disclosure controls and procedures, management recognized that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives, and management necessarily was required to apply its judgment in evaluating the cost-benefit relationship of possible controls and procedures.

b)Changes in Internal Control over Financial Reporting

There were no changes in internal controls for the three months ended December 31, 2023 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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PART II—OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS.

From time to time, we may become involved in various investigations, claims and legal proceedings that arise in the ordinary course of our business. Furthermore, third parties may try to seek to impose liability on us in connection with the activities of our portfolio companies. While we do not expect that the resolution of these matters, if they arise, would materially affect our business, financial condition, results of operations or cash flows, resolution will be subject to various uncertainties and could result in the expenditure of significant financial and managerial resources. Further, we are not named as a party to any proceeding that involves a claim for damages that exceeds 10% of our consolidated current assets.

ITEM 1A. RISK FACTORS.

Our business is subject to certain risks and events that, if they occur, could adversely affect our financial condition and results of operations and the trading price of our securities. For a discussion of these risks, please refer to the section captioned “Item 1A. Risk Factors” in Part I of our Annual Report on Form 10-K for the fiscal year ended March 31, 2023, as filed with the SEC on May 10, 2023. The risks described in our Annual Report are not the only risks we face. Additional risks and uncertainties not currently known to us or that we currently deem to be immaterial also may materially and adversely affect our business, financial condition and/or operating results.

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS.

Not applicable.

ITEM 3. DEFAULTS UPON SENIOR SECURITIES.

Not applicable.

ITEM 4. MINE SAFETY DISCLOSURES.

Not applicable.

ITEM 5. OTHER INFORMATION.

During the three months ended December 31, 2023, none of our officers or directors adopted or terminated any contract, instruction or written plan for the purchase or sale of our securities that was intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) ("Rule 10b5-1 trading arrangement") or any “non-Rule 10b5-1 trading arrangement.” In addition, during the three months ended December 31, 2023, we did not adopt or terminate any Rule 10b5-1 trading arrangement.

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ITEM 6. EXHIBITS

See the exhibit index.

Exhibit	Description
3.1	Amended and Restated Certificate of Incorporation, incorporated by reference to Exhibit A.2 to Pre-Effective Amendment No. 1 to the Registration Statement on Form N-2 (File No. 333-123699), filed May 13, 2005.
3.2	Second Amended and Restated Bylaws, incorporated by reference to Exhibit 3.1 to the Current Report on Form 8-K (File No. 814-00704), filed May 15, 2020.
4.1	Specimen Stock Certificate, incorporated by reference to Exhibit d to Pre-Effective Amendment No. 3 to the Registration Statement on Form N-2 (File No. 333-123699), filed June 21, 2005.
4.2	Indenture, dated as of May 22, 2020, between Gladstone Investment Corporation and UMB Bank, National Association, as trustee incorporated by reference to Exhibit 4.1 to the Current Report on Form 8-K (File No. 814-00704), filed May 22, 2020.
4.3	Second Supplemental Indenture between Gladstone Investment Corporation and UMB Bank, National Association, dated as of March 2, 2021, incorporated by reference to Exhibit 4.1 to the Current Report on Form 8-K (File No. 814-00704), filed March 2, 2021.
4.4	Third Supplemental Indenture between Gladstone Investment Corporation and UMB Bank, National Association, dated as of August 18, 2021, incorporated by reference to Exhibit 4.1 to the Current Report on Form 8-K (File No. 814-00704), filed August 18, 2021.
4.5	Fourth Supplemental Indenture between Gladstone Investment Corporation and UMB Bank, National Association, dated as of May 31, 2023, incorporated by reference to Exhibit 4.1 to the Current Report on Form 8-K (File No. 814-00704), filed May 31, 2023.
10.1	Amendment No. 8 to Fifth Amended and Restated Credit Agreement, dated as of October 30, 2023 by and among Gladstone Business Investment, LLC, as Borrower, Gladstone Management Corporation, as Servicer, KeyBank National Association, as administrative agent, swingline lender, managing agent and lead arranger and certain other lenders party thereto, incorporated by reference to Exhibit 10.1 to the Current Report on Form 8-K (File No. 814-00704), filed October 31, 2023.
10.2	Amendment No. 9 to Fifth Amended and Restated Credit Agreement, dated as of February 5, 2024 by and among Gladstone Business Investment, LLC, as Borrower, Gladstone Management Corporation, as Servicer, KeyBank National Association, as administrative agent, swingline lender, managing agent and lead arranger and certain other lenders party thereto, incorporated by reference to Exhibit 10.1 to the Current Report on Form 8-K (File No. 814-00704), filed February 6, 2024.
31.1*	Certification of Chief Executive Officer pursuant to section 302 of The Sarbanes-Oxley Act of 2002.
31.2*	Certification of Chief Financial Officer and Treasurer pursuant to section 302 of The Sarbanes-Oxley Act of 2002.
32.1**	Certification of Chief Executive Officer pursuant to section 906 of The Sarbanes-Oxley Act of 2002.
32.2**	Certification of Chief Financial Officer and Treasurer pursuant to section 906 of The Sarbanes-Oxley Act of 2002.
101.INS***	XBRL Instance Document
101.SCH***	XBRL Taxonomy Extension Schema Document
101.CAL***	XBRL Taxonomy Extension Calculation Linkbase Document
101.LAB***	XBRL Taxonomy Extension Label Linkbase Document
101.PRE***	XBRL Taxonomy Extension Presentation Linkbase Document
101.DEF***	XBRL Definition Linkbase
104	Cover Page Interactive Data File (formatted in iXBRL and contained in Exhibit 101)

______________________

*	Filed herewith
**	Furnished herewith
***	Attached as Exhibit 101 to this Quarterly Report on Form 10-Q are the following materials, formatted in Inline eXtensible Business Reporting Language (iXBRL): (i) the Consolidated Statements of Assets and Liabilities as of December 31, 2023 and March 31, 2023, (ii) the Consolidated Statements of Operations for the three and nine months ended December 31, 2023 and 2022, (iii) the Consolidated Statements of Changes in Net Assets for the three and nine months ended December 31, 2023 and 2022, (iv) the Consolidated Statements of Cash Flows for the nine months ended December 31, 2023 and 2022, (v) the Consolidated Schedules of Investments as of December 31, 2023 and March 31, 2023, and (vi) the Notes to Consolidated Financial Statements.

70

All other exhibits for which provision is made in the applicable regulations of the Securities and Exchange Commission are not required under the related instruction or are inapplicable and therefore have been omitted.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

GLADSTONE INVESTMENT CORPORATION
By:	/s/ Rachael Easton
	Rachael Easton
	Chief Financial Officer and Treasurer
	(principal financial and accounting officer)

Date: February 6, 2024

71

EX-31.1

Exhibit 31.1

CERTIFICATION

Pursuant to Section 302 of The Sarbanes-Oxley Act of 2002

I, David Gladstone, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of Gladstone Investment Corporation;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: February 6, 2024

/s/ David Gladstone

David Gladstone

Chief Executive Officer and

Chairman of the Board of Directors

EX-31.2

Exhibit 31.2

CERTIFICATION

Pursuant to Section 302 of The Sarbanes-Oxley Act of 2002

I, Rachael Easton, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of Gladstone Investment Corporation;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: February 6, 2024

/s/ Rachael Easton

Rachael Easton

Chief Financial Officer and Treasurer

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

The undersigned, the Chief Executive Officer and Chairman of the Board of Gladstone Investment Corporation (the “Company”), hereby certifies on the date hereof, pursuant to 18 U.S.C. §1350(a), as adopted pursuant to Section 906 of The Sarbanes-Oxley Act of 2002, that the Quarterly Report on Form 10-Q for the quarter ended December 31, 2023 (“Form 10-Q”), filed concurrently herewith by the Company, fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, and that the information contained in the Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: February 6, 2024

/s/ David Gladstone

David Gladstone

Chief Executive Officer and

Chairman of the Board of Directors

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

The undersigned, the Chief Financial Officer of Gladstone Investment Corporation (the “Company”), hereby certifies on the date hereof, pursuant to 18 U.S.C. §1350(a), as adopted pursuant to Section 906 of The Sarbanes-Oxley Act of 2002, that the Quarterly Report on Form 10-Q for the quarter ended December 31, 2023 (“Form 10-Q”), filed concurrently herewith by the Company, fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, and that the information contained in the Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: February 6, 2024

/s/ Rachael Easton

Rachael Easton

Chief Financial Officer and Treasurer

XML

Cover - shares	9 Months Ended
	Dec. 31, 2023	Feb. 05, 2024
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Dec. 31, 2023
Document Transition Report	false
Entity File Number	814-00704
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	83-0423116
Entity Address, Address Line One	1521 WESTBRANCH DRIVE
Entity Address, Address Line Two	SUITE 100
Entity Address, City or Town	MCLEAN
Entity Address, State or Province	VA
Entity Address, Postal Zip Code	22102
City Area Code	703
Local Phone Number	287-5800
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		35,890,160
Entity Central Index Key	0001321741
Current Fiscal Year End Date	--03-31
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Registrant Name	GLADSTONE INVESTMENT CORPORATION\DE
Common Stock, $0.001 par value per share
Document Information [Line Items]
Title of 12(b) Security	Common Stock, $0.001 par value per share
Trading Symbol	GAIN
Security Exchange Name	NASDAQ
5.00% Notes due 2026
Document Information [Line Items]
Title of 12(b) Security	5.00% Notes due 2026
Trading Symbol	GAINN
Security Exchange Name	NASDAQ
4.875% Notes due 2028
Document Information [Line Items]
Title of 12(b) Security	4.875% Notes due 2028
Trading Symbol	GAINZ
Security Exchange Name	NASDAQ
8.00% 2028 Notes
Document Information [Line Items]
Title of 12(b) Security	8.00% Notes due 2028
Trading Symbol	GAINL
Security Exchange Name	NASDAQ

XML

CONSOLIDATED STATEMENTS OF ASSETS AND LIABILITIES - USD ($) $ in Thousands		Dec. 31, 2023		Mar. 31, 2023
ASSETS
Investments at fair value		$ 902,808		$ 753,543	[1]
Cash and cash equivalents		2,819		2,683
Restricted cash and cash equivalents		766		565
Interest receivable		6,575		3,038
Due from administrative agent		2,151		3,899
Deferred financing costs, net		1,069		431
Other assets, net		1,436		1,485
TOTAL ASSETS		917,624		765,644
Borrowings:
Line of credit at fair value (Cost of $82,600 and $35,200, respectively)		82,600		35,171
Notes payable, net		330,904		257,436
Total borrowings		413,504		292,607
Accounts payable and accrued expenses		1,596		786
Interest payable		3,545		2,309
Other liabilities		770		565
TOTAL LIABILITIES		457,683		325,902
Commitments and contingencies	[2]
TOTAL NET ASSETS		459,941		439,742
ANALYSIS OF NET ASSETS
Common stock, $0.001 par value per share, 100,000,000 shares authorized, 35,351,954 and 33,591,505 shares issued and outstanding, respectively		35		34
Capital in excess of par value		426,302		401,798
Cumulative net unrealized appreciation of investments		34,304		32,913
Cumulative net unrealized depreciation of other		0		29
Overdistributed net investment income		(16,666)		(5,527)
Accumulated net realized gain in excess of distributions		15,966		10,495
Total distributable earnings		33,604		37,910
TOTAL NET ASSETS		$ 459,941		$ 439,742
NET ASSET VALUE PER SHARE (in USD per share)		$ 13.01		$ 13.09
Related Party
Borrowings:
Fees due to related party		$ 38,268		$ 29,635
Fees due to Adviser | Related Party
Borrowings:
Fees due to related party	[3]	37,693		28,919
Fee due to Administrator | Related Party
Borrowings:
Fees due to related party	[3]	575		716
Non-Control/Non-Affiliate Investments
ASSETS
Investments at fair value		620,338	[4]	496,875	[5]
Affiliate Investments
ASSETS
Investments at fair value		278,226	[6]	255,955	[7]
Control Investments
ASSETS
Investments at fair value		$ 4,244	[8]	$ 713	[9]

[1] Cumulative gross unrealized appreciation for federal income tax purposes is $150.4 million; cumulative gross unrealized depreciation for federal income tax purposes is $119.3 million. Cumulative net unrealized appreciation is $31.1 million, based on a tax cost of $722.4 million.

[2] Refer to Note 9 — Commitments and Contingencies in the accompanying Notes to Consolidated Financial Statements for additional information.

[3] Refer to Note 4 — Related Party Transactions in the accompanying Notes to Consolidated Financial Statements for additional information.

[4] Non-Control/Non-Affiliate investments, as defined by the 1940 Act, are those that are neither Control nor Affiliate investments and in which we own less than 5.0% of the issued and outstanding voting securities.

[5] Non-Control/Non-Affiliate investments, as defined by the 1940 Act, are those that are neither Control nor Affiliate investments and in which we own less than 5.0% of the issued and outstanding voting securities.

[6] Affiliate investments, as defined by the 1940 Act, are those that are not Control investments and in which we own, with the power to vote, between and inclusive of 5.0% and 25.0% of the issued and outstanding voting securities.

[7] Affiliate investments, as defined by the 1940 Act, are those that are not Control investments and in which we own, with the power to vote, between and inclusive of 5.0% and 25.0% of the issued and outstanding voting securities.

[8] Control investments, as defined by the 1940 Act, are those where we have the power to exercise a controlling influence over the management or policies of the portfolio company, which may include owning, with the power to vote, more than 25.0% of the issued and outstanding voting securities.

[9] Control investments, as defined by the 1940 Act, are those where we have the power to exercise a controlling influence over the management or policies of the portfolio company, which may include owning, with the power to vote, more than 25.0% of the issued and outstanding voting securities.

XML

CONSOLIDATED STATEMENTS OF ASSETS AND LIABILITIES (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2023		Mar. 31, 2023
Cost	$ 868,504		$ 720,630	[1]
Line of credit, cost	$ 82,600		$ 35,200
Common stock, par value (in USD per share)	$ 0.001		$ 0.001
Common stock, authorized (in shares)	100,000,000		100,000,000
Common stock, issued (in shares)	35,351,954		33,591,505
Common stock, outstanding (in shares)	35,351,954		33,591,505
Non-Control/Non-Affiliate Investments
Cost	$ 545,299	[2]	$ 429,305	[3]
Affiliate Investments
Cost	291,146	[4]	276,055	[5]
Control Investments
Cost	$ 32,059	[6]	$ 15,270	[7]

[1] Cumulative gross unrealized appreciation for federal income tax purposes is $150.4 million; cumulative gross unrealized depreciation for federal income tax purposes is $119.3 million. Cumulative net unrealized appreciation is $31.1 million, based on a tax cost of $722.4 million.

[2] Non-Control/Non-Affiliate investments, as defined by the 1940 Act, are those that are neither Control nor Affiliate investments and in which we own less than 5.0% of the issued and outstanding voting securities.

[3] Non-Control/Non-Affiliate investments, as defined by the 1940 Act, are those that are neither Control nor Affiliate investments and in which we own less than 5.0% of the issued and outstanding voting securities.

[4] Affiliate investments, as defined by the 1940 Act, are those that are not Control investments and in which we own, with the power to vote, between and inclusive of 5.0% and 25.0% of the issued and outstanding voting securities.

[5] Affiliate investments, as defined by the 1940 Act, are those that are not Control investments and in which we own, with the power to vote, between and inclusive of 5.0% and 25.0% of the issued and outstanding voting securities.

[6] Control investments, as defined by the 1940 Act, are those where we have the power to exercise a controlling influence over the management or policies of the portfolio company, which may include owning, with the power to vote, more than 25.0% of the issued and outstanding voting securities.

[7] Control investments, as defined by the 1940 Act, are those where we have the power to exercise a controlling influence over the management or policies of the portfolio company, which may include owning, with the power to vote, more than 25.0% of the issued and outstanding voting securities.

XML

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
INVESTMENT INCOME
Interest income		$ 21,699	$ 16,067	$ 60,369	$ 43,045
Dividend income		0	4,466	1,907	10,847
Success fee income		1,382	1,061	1,382	7,794
Total investment income		23,081	21,594	63,658	61,686
EXPENSES
Base management fee	[1]	4,602	3,789	12,874	10,965
Loan servicing fee	[1]	2,332	2,080	6,829	5,754
Incentive fee	[1]	1,667	3,945	15,401	7,722
Administration fee	[1]	450	410	1,306	1,352
Interest expense on borrowings		6,520	4,074	17,598	11,715
Amortization of deferred financing costs and discounts		589	452	1,708	1,350
Professional fees		411	331	1,030	1,564
Other general and administrative expenses		891	780	2,404	2,793
Expenses before credits from Adviser		17,462	15,861	59,150	43,215
Credits to base management fee – loan servicing fee	[1]	(2,332)	(2,080)	(6,829)	(5,754)
Credits to fees from Adviser - other	[1]	(1,793)	(756)	(5,117)	(3,131)
Total expenses, net of credits to fees		13,337	13,025	47,204	34,330
NET INVESTMENT INCOME		9,744	8,569	16,454	27,356
REALIZED AND UNREALIZED GAIN (LOSS)
Total net realized gain		43,461	3,844	44,905	10,598
Total net unrealized (depreciation) appreciation		(46,626)	3,366	1,362	(7,065)
Net realized and unrealized (loss) gain		(3,165)	7,210	46,267	3,533
NET INCREASE IN NET ASSETS RESULTING FROM OPERATIONS		$ 6,579	$ 15,779	$ 62,721	$ 30,889
BASIC AND DILUTED PER COMMON SHARE:
Net investment income, basic (in USD per share)		$ 0.28	$ 0.26	$ 0.49	$ 0.82
Net investment income, diluted (in USD per share)		0.28	0.26	0.49	0.82
Net increase in net assets resulting from operations, basic (in USD per share)		0.19	0.47	1.85	0.93
Net increase in net assets resulting from operations, diluted (in USD per share)		$ 0.19	$ 0.47	$ 1.85	$ 0.93
WEIGHTED-AVERAGE SHARES OF COMMON STOCK OUTSTANDING:
Basic (in shares)		34,351,597	33,316,055	33,921,300	33,246,811
Diluted (in shares)		34,351,597	33,316,055	33,921,300	33,246,811
Cash and cash equivalents
INVESTMENT INCOME
Interest income		$ 111	$ 21	$ 731	$ 53
Non-Control/Non-Affiliate Investments
INVESTMENT INCOME
Interest income		15,237	11,357	41,353	30,007
Dividend income		0	0	0	4,829
Success fee income		1,382	1,061	1,382	7,794
REALIZED AND UNREALIZED GAIN (LOSS)
Total net realized gain		43,459	473	43,748	7,504
Total net unrealized (depreciation) appreciation		(42,325)	2,683	7,470	16,687
Affiliate Investments
INVESTMENT INCOME
Interest income		6,351	4,689	18,285	12,985
Dividend income		0	4,466	1,907	6,018
REALIZED AND UNREALIZED GAIN (LOSS)
Total net realized gain		2	3,371	275	3,371
Total net unrealized (depreciation) appreciation		(4,110)	683	(5,887)	(23,752)
Control Investments
REALIZED AND UNREALIZED GAIN (LOSS)
Total net realized gain		0	0	882	(277)
Total net unrealized (depreciation) appreciation		(99)	0	(192)	0
Other
REALIZED AND UNREALIZED GAIN (LOSS)
Total net unrealized (depreciation) appreciation		$ (92)	$ 0	$ (29)	$ 0

[1] Refer to Note 4 — Related Party Transactions in the accompanying Notes to Consolidated Financial Statements for additional information.

XML

CONSOLIDATED STATEMENTS OF CHANGES IN NET ASSETS - USD ($) $ in Thousands		3 Months Ended
		Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022
Investment Company, Net Assets [Roll Forward]
Net Assets, beginning balance		$ 475,666	$ 436,435	$ 439,742	$ 442,470	$ 446,409	$ 445,830
OPERATIONS
Net investment (loss) income		9,744	(1,730)	8,440	8,569	11,416	7,371
Net realized gain on investments		43,461	289	1,155	3,844	2,302	4,452
Net unrealized (depreciation) appreciation of investments		(46,534)	48,745	(820)	3,366	(10,643)	212
Net unrealized depreciation (appreciation) of other)		(92)	52	11	0	0	0
Net increase in net assets from operations		6,579	47,356	8,786	15,779	3,075	12,035
DISTRIBUTIONS
Distributions to common stockholders from net investment income	[1]	(15,093)	(6,665)	(7,069)	(7,360)	(4,678)	(3,188)
Distributions to common stockholders from net realized gains	[1]	(28,009)	(5,519)	(5,024)	(4,652)	(2,797)	(8,268)
Net decrease in net assets from distributions	[1]	(43,102)	(12,184)	(12,093)	(12,012)	(7,475)	(11,456)
CAPITAL ACTIVITY
Issuance of common stock		21,130	4,121	0	2,996	467	0
Discounts, commissions, and offering costs for issuance of common stock		(332)	(62)	0	(42)	(6)	0
Net increase in net assets from capital activity		20,798	4,059	0	2,954	461	0
NET (DECREASE) INCREASE IN NET ASSETS		(15,725)	39,231	(3,307)	6,721	(3,939)	579
Net Assets, ending balance		$ 459,941	$ 475,666	$ 436,435	$ 449,191	$ 442,470	$ 446,409

[1] Refer to Note 8 — Distributions to Common Stockholders in the accompanying Notes to Consolidated Financial Statements for additional information.

XML

CONSOLIDATED STATEMENTS OF CHANGES IN NET ASSETS (Parenthetical) - $ / shares	3 Months Ended												9 Months Ended
	Dec. 31, 2023	[1]	Sep. 30, 2023	[1]	Jun. 30, 2023	[1]	Dec. 31, 2022	[1]	Sep. 30, 2022	[1]	Jun. 30, 2022	[1]	Dec. 31, 2023	Dec. 31, 2022
Investment Company [Abstract]
Net investment income (loss) (in USD per share)	$ 0.43		$ 0.20		$ 0.21		$ 0.22		$ 0.14		$ 0.10		$ 0.84	$ 0.46
Gain (loss) on investment (in USD per share)	$ 0.81		$ 0.16		$ 0.15		$ 0.14		$ 0.08		$ 0.25		$ 1.12	$ 0.47

[1] Refer to Note 8 — Distributions to Common Stockholders in the accompanying Notes to Consolidated Financial Statements for additional information.

XML

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands		9 Months Ended
		Dec. 31, 2023	Dec. 31, 2022
CASH FLOWS FROM OPERATING ACTIVITIES
Net increase in net assets resulting from operations		$ 62,721	$ 30,889
Adjustments to reconcile net increase in net assets resulting from operations to net cash (used in) provided by operating activities:
Purchase of investments		(182,988)	(133,506)
Principal repayments of investments		27,500	50,300
Net proceeds from the sale and recapitalization of investments		52,228	35,533
Net realized gain on investments		(44,905)	(10,598)
Net unrealized (appreciation) depreciation of investments and other		(1,362)	7,065
Amortization of premiums, discounts, and acquisition costs, net		0	(12)
Amortization of deferred financing costs and discounts		1,708	1,350
Bad debt (recoveries) expense, net		(54)	202
Changes in assets and liabilities:
Increase in interest receivable		(3,537)	(1,036)
Decrease in due from administrative agent		1,748	4,585
Decrease (increase) in other assets, net		99	(597)
Increase in accounts payable and accrued expenses		810	964
Increase in interest payable		1,236	106
Increase in other liabilities		496	593
Net cash used in operating activities		(75,717)	(13,405)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from issuance of common stock		25,251	3,463
Discounts, commissions, and offering costs for issuance of common stock		(297)	(48)
Proceeds from line of credit		231,900	82,900
Repayments on line of credit		(184,500)	(53,300)
Proceeds from issuance of notes payable		74,750	0
Deferred financing and offering costs		(3,671)	(315)
Distributions paid to common stockholders		(67,379)	(30,943)
Net cash provided by financing activities		76,054	1,757
NET INCREASE (DECREASE) IN CASH, CASH EQUIVALENTS, RESTRICTED CASH, AND RESTRICTED CASH EQUIVALENTS		337	(11,648)
CASH, CASH EQUIVALENTS, RESTRICTED CASH, AND RESTRICTED CASH EQUIVALENTS, BEGINNING OF PERIOD		3,248	14,495
CASH, CASH EQUIVALENTS, RESTRICTED CASH, AND RESTRICTED CASH EQUIVALENTS, END OF PERIOD		3,585	2,847
CASH PAID FOR INTEREST		15,585	10,329
Adviser
Changes in assets and liabilities:
Increase (Decrease) in fee due to related party	[1]	8,724	820
Administrator
Changes in assets and liabilities:
Increase (Decrease) in fee due to related party	[1]	(141)	(63)
Investment, Unaffiliated and Affiliated Issuer, Excluding Other
Adjustments to reconcile net increase in net assets resulting from operations to net cash (used in) provided by operating activities:
Net realized gain on investments		(44,905)	(10,598)
Net unrealized (appreciation) depreciation of investments and other		(1,391)	7,065
Net unrealized appreciation of other
Adjustments to reconcile net increase in net assets resulting from operations to net cash (used in) provided by operating activities:
Net unrealized (appreciation) depreciation of investments and other		$ 29	$ 0

[1] Refer to Note 4 — Related Party Transactions in the accompanying Notes to Consolidated Financial Statements for additional information.

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CONSOLIDATED SCHEDULE OF INVESTMENTS - USD ($) $ in Thousands		Dec. 31, 2023		Mar. 31, 2023
Schedule of Investments [Line Items]
Cost		$ 868,504		$ 720,630	[1]
Fair Value		902,808		753,543	[1]
Diversified/Conglomerate Services
Schedule of Investments [Line Items]
Fair Value		255,141		268,954
Home and Office Furnishings, Housewares, and Durable Consumer Products
Schedule of Investments [Line Items]
Fair Value		155,897		143,685
Hotels, Motels, Inns, and Gaming
Schedule of Investments [Line Items]
Fair Value		80,557		58,713
Oil and Gas
Schedule of Investments [Line Items]
Fair Value		45,983		0
Printing and Publishing
Schedule of Investments [Line Items]
Fair Value		15,210		0
Aerospace and Defense
Schedule of Investments [Line Items]
Fair Value		25,754		22,215
Machinery (Non-Agriculture, Non-Construction, and Non-Electronic)
Schedule of Investments [Line Items]
Fair Value		92,293		20,088
Telecommunications
Schedule of Investments [Line Items]
Fair Value		8,881		18,987
Secured First Lien Debt
Schedule of Investments [Line Items]
Cost		517,539		471,439
Fair Value		476,126		437,517
Secured Second Lien Debt
Schedule of Investments [Line Items]
Cost		148,158		84,158
Fair Value		137,480		75,734
Preferred Equity
Schedule of Investments [Line Items]
Cost		151,969		149,099
Fair Value		214,664		222,585
Common Equity/ Equivalents
Schedule of Investments [Line Items]
Cost		50,838		15,934
Fair Value		74,538		17,707
Non-Control/Non-Affiliate Investments
Schedule of Investments [Line Items]
Cost		545,299	[2]	429,305	[3]
Fair Value		620,338	[2]	496,875	[3]
Non-Control/Non-Affiliate Investments | Secured First Lien Debt
Schedule of Investments [Line Items]
Cost		325,231	[2]	281,631	[3]
Fair Value		324,528	[2]	279,748	[3]
Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Diversified/Conglomerate Manufacturing
Schedule of Investments [Line Items]
Cost		5,950	[2]	5,750	[3]
Fair Value		5,294	[2]	5,391	[3]
Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Diversified/Conglomerate Services
Schedule of Investments [Line Items]
Cost		82,950	[2]	110,450	[3]
Fair Value		82,950	[2]	110,450	[3]
Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Home and Office Furnishings, Housewares, and Durable Consumer Products
Schedule of Investments [Line Items]
Cost		36,750	[2]	36,750	[3]
Fair Value		36,703	[2]	35,226	[3]
Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Hotels, Motels, Inns, and Gaming
Schedule of Investments [Line Items]
Cost		65,100	[2]	42,450	[3]
Fair Value		65,100	[2]	42,450	[3]
Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Oil and Gas
Schedule of Investments [Line Items]
Cost	[2]	34,750
Fair Value	[2]	34,750
Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Printing and Publishing
Schedule of Investments [Line Items]
Cost	[2]	13,500
Fair Value	[2]	13,500
Non-Control/Non-Affiliate Investments | Secured Second Lien Debt
Schedule of Investments [Line Items]
Cost		93,340	[2]	54,340	[3]
Fair Value		93,340	[2]	50,842	[3]
Non-Control/Non-Affiliate Investments | Secured Second Lien Debt | Aerospace and Defense
Schedule of Investments [Line Items]
Cost		25,696	[2]	25,696	[3]
Fair Value		25,696	[2]	22,215	[3]
Non-Control/Non-Affiliate Investments | Secured Second Lien Debt | Machinery (Non-Agriculture, Non-Construction, and Non-Electronic)
Schedule of Investments [Line Items]
Cost	[3]			15,644
Fair Value	[3]			15,644
Non-Control/Non-Affiliate Investments | Preferred Equity
Schedule of Investments [Line Items]
Cost		82,110	[2]	79,240	[3]
Fair Value		164,241	[2]	164,534	[3]
Non-Control/Non-Affiliate Investments | Preferred Equity | Diversified/Conglomerate Services
Schedule of Investments [Line Items]
Cost		11,206	[2]	18,201	[3]
Fair Value		25,528	[2]	51,170	[3]
Non-Control/Non-Affiliate Investments | Preferred Equity | Home and Office Furnishings, Housewares, and Durable Consumer Products
Schedule of Investments [Line Items]
Cost		16,236	[2]	16,236	[3]
Fair Value		43,599	[2]	33,969	[3]
Non-Control/Non-Affiliate Investments | Common Equity/ Equivalents
Schedule of Investments [Line Items]
Cost		44,618	[2]	14,094	[3]
Fair Value		38,229	[2]	1,751	[3]
Affiliate Investments
Schedule of Investments [Line Items]
Cost		291,146	[4]	276,055	[5]
Fair Value		278,226	[4]	255,955	[5]
Affiliate Investments | Secured First Lien Debt
Schedule of Investments [Line Items]
Cost		178,548	[4]	185,258	[5]
Fair Value		147,354	[4]	157,769	[5]
Affiliate Investments | Secured First Lien Debt | Diversified/Conglomerate Services
Schedule of Investments [Line Items]
Cost		100,498	[4]	100,498	[5]
Fair Value		77,223	[4]	77,964	[5]
Affiliate Investments | Secured First Lien Debt | Telecommunications
Schedule of Investments [Line Items]
Cost		16,800	[4]	16,800	[5]
Fair Value		8,881	[4]	16,800	[5]
Affiliate Investments | Secured Second Lien Debt
Schedule of Investments [Line Items]
Cost		51,618	[4]	26,618	[5]
Fair Value		44,140	[4]	24,892	[5]
Affiliate Investments | Preferred Equity
Schedule of Investments [Line Items]
Cost		54,761	[4]	62,960	[5]
Fair Value		50,423	[4]	58,051	[5]
Affiliate Investments | Preferred Equity | Diversified/Conglomerate Services
Schedule of Investments [Line Items]
Cost		24,309	[4]	24,309	[5]
Fair Value		8,247	[4]	14,126	[5]
Affiliate Investments | Common Equity/ Equivalents
Schedule of Investments [Line Items]
Cost		6,219	[4]	1,219	[5]
Fair Value		36,309	[4]	15,243	[5]
Control Investments
Schedule of Investments [Line Items]
Cost		32,059	[6]	15,270	[7]
Fair Value		4,244	[6]	713	[7]
Control Investments | Secured First Lien Debt
Schedule of Investments [Line Items]
Cost		13,760	[6]	4,550	[7]
Fair Value		4,244	[6]	0	[7]
Control Investments | Secured Second Lien Debt
Schedule of Investments [Line Items]
Cost		3,200	[6]	3,200	[7]
Fair Value		0	[6]	0	[7]
Control Investments | Preferred Equity
Schedule of Investments [Line Items]
Cost		15,098	[6]	6,899	[7]
Fair Value		0	[6]	0	[7]
Control Investments | Common Equity/ Equivalents
Schedule of Investments [Line Items]
Cost		1	[6]	621	[7]
Fair Value		$ 0	[6]	$ 713	[7]
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Common Stock Warrants
Schedule of Investments [Line Items]
Units		3.50%	[8],[9],[10],[11],[12]	3.50%	[13],[14],[15],[16],[17]
Cost		$ 0	[8],[11],[12]	$ 0	[13],[15],[17]
Fair Value		0	[8],[11],[12]	0	[13],[15],[17]
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Line of Credit
Schedule of Investments [Line Items]
Principal amount		2,800	[8],[9],[10],[18]	2,800	[13],[14],[16],[17]
Cost		2,800	[8],[18]	2,800	[13],[17]
Fair Value		2,800	[8],[18]	$ 2,800	[13],[17]
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Preferred Stock
Schedule of Investments [Line Items]
Shares	[13],[14],[15],[16],[17]			14,304
Cost	[13],[15],[17]			$ 4,722
Fair Value	[13],[15],[17]			2,187
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Term Debt
Schedule of Investments [Line Items]
Principal amount	[13],[14],[16],[17]			14,000
Cost	[13],[17]			14,000
Fair Value	[13],[17]			$ 14,000
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Term Debt 1
Schedule of Investments [Line Items]
Principal amount	[8],[9],[10],[18]	14,000
Cost	[8],[18]	14,000
Fair Value	[8],[18]	$ 6,081
Investment, Identifier [Axis]: B+T Group Acquisition, Inc.– Preferred Stock
Schedule of Investments [Line Items]
Shares	[8],[9],[10],[11],[12]	14,304
Cost	[8],[11],[12]	$ 4,722
Fair Value	[8],[11],[12]	$ 0
Investment, Identifier [Axis]: Brunswick Bowling Products, Inc. – Preferred Stock
Schedule of Investments [Line Items]
Shares		6,653	[9],[10],[11],[12]	6,653	[14],[15],[16],[17]
Cost		$ 6,653	[11],[12]	$ 6,653	[15],[17]
Fair Value		43,599	[11],[12]	33,969	[15],[17]
Investment, Identifier [Axis]: Brunswick Bowling Products, Inc. – Term Debt 1
Schedule of Investments [Line Items]
Principal amount		17,700	[9],[10],[11]	17,700	[14],[16],[17]
Cost		17,700	[11]	17,700	[17]
Fair Value		17,700	[11]	17,700	[17]
Investment, Identifier [Axis]: Brunswick Bowling Products, Inc. – Term Debt 2
Schedule of Investments [Line Items]
Principal amount		6,850	[9],[10],[11]	6,850	[14],[16],[17]
Cost		6,850	[11]	6,850	[17]
Fair Value		$ 6,850	[11]	$ 6,850	[17]
Investment, Identifier [Axis]: Counsel Press, Inc. – Preferred Stock
Schedule of Investments [Line Items]
Shares	[14],[15],[16],[17]			6,995
Cost	[15],[17]			$ 6,995
Fair Value	[15],[17]			27,885
Investment, Identifier [Axis]: Counsel Press, Inc. – Term Debt 1
Schedule of Investments [Line Items]
Principal amount	[14],[16],[17]			21,100
Cost	[17]			21,100
Fair Value	[17]			21,100
Investment, Identifier [Axis]: Counsel Press, Inc. – Term Debt 2
Schedule of Investments [Line Items]
Principal amount	[14],[16],[17]			6,400
Cost	[17]			6,400
Fair Value	[17]			$ 6,400
Investment, Identifier [Axis]: Dema/Mai Holdings, Inc - Preferred Equity
Schedule of Investments [Line Items]
Shares	[9],[10],[11],[12]	21,000
Cost	[11],[12]	$ 21,000
Fair Value	[11],[12]	26,102
Investment, Identifier [Axis]: Dema/Mai Holdings, Inc – Term Debt
Schedule of Investments [Line Items]
Principal amount	[9],[10],[11]	38,250
Cost	[11]	38,250
Fair Value	[11]	$ 38,250
Investment, Identifier [Axis]: Dema/Mai Holdings, Inc. – Preferred Equity
Schedule of Investments [Line Items]
Shares	[14],[15],[16],[17]			21,000
Cost	[15],[17]			$ 21,000
Fair Value	[15],[17]			22,321
Investment, Identifier [Axis]: Dema/Mai Holdings, Inc. – Term Debt
Schedule of Investments [Line Items]
Principal amount	[14],[16],[17]			38,250
Cost	[17]			38,250
Fair Value	[17]			$ 38,250
Investment, Identifier [Axis]: Diligent Delivery Systems – Common Stock Warrants
Schedule of Investments [Line Items]
Units		8.00%	[9],[10],[12],[19]	8.00%	[14],[15],[16],[17]
Cost		$ 500	[12],[19]	$ 500	[15],[17]
Fair Value		500	[12],[19]	1,724	[15],[17]
Investment, Identifier [Axis]: Diligent Delivery Systems – Term Debt
Schedule of Investments [Line Items]
Principal amount		13,000	[9],[10],[19]	13,000	[14],[16],[20]
Cost		13,000	[19]	13,000	[20]
Fair Value		13,000	[19]	$ 12,983	[20]
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc - Term Debt
Schedule of Investments [Line Items]
Principal amount	[8],[9],[10],[11],[21]	9,210
Cost	[8],[11],[21]	9,210
Fair Value	[8],[11],[21]	$ 4,244
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc. - Preferred Stock
Schedule of Investments [Line Items]
Shares	[8],[9],[10],[11],[12]	8,199
Cost	[8],[11],[12]	$ 8,199
Fair Value	[8],[11],[12]	$ 0
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc. – Preferred Stock
Schedule of Investments [Line Items]
Shares	[13],[14],[15],[16],[17]			8,199
Cost	[13],[15],[17]			$ 8,199
Fair Value	[13],[15],[17]			0
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc. – Term Debt
Schedule of Investments [Line Items]
Principal amount	[13],[14],[16],[17],[22]			9,210
Cost	[13],[17],[22]			9,210
Fair Value	[13],[17],[22]			$ 4,255
Investment, Identifier [Axis]: Educators Resource, Inc. – Preferred Stock
Schedule of Investments [Line Items]
Shares		8,560	[9],[10],[11],[12]	8,560	[14],[15],[16],[17]
Cost		$ 8,560	[11],[12]	$ 8,560	[15],[17]
Fair Value		30,237	[11],[12]	17,445	[15],[17]
Investment, Identifier [Axis]: Educators Resource, Inc. – Term Debt
Schedule of Investments [Line Items]
Principal amount		20,000	[9],[10],[11]	20,000	[14],[16],[17]
Cost		20,000	[11]	20,000	[17]
Fair Value		$ 20,000	[11]	$ 20,000	[17]
Investment, Identifier [Axis]: Funko Acquisition Holdings, LLC – Common Units
Schedule of Investments [Line Items]
Shares		4,239	[8],[9],[10],[12],[23]	4,239	[13],[14],[15],[16],[24]
Cost		$ 21	[8],[12],[23]	$ 21	[13],[15],[24]
Fair Value		$ 22	[8],[12],[23]	$ 27	[13],[15],[24]
Investment, Identifier [Axis]: Galaxy Technologies Holdings, Inc. – Common Stock
Schedule of Investments [Line Items]
Shares		16,957	[9],[10],[11],[12]	16,957	[14],[15],[16],[17]
Cost		$ 11,513	[11],[12]	$ 11,513	[15],[17]
Fair Value		58	[11],[12]	0	[15],[17]
Investment, Identifier [Axis]: Galaxy Technologies Holdings, Inc. – Term Debt 1
Schedule of Investments [Line Items]
Principal amount		6,900	[9],[10],[11]	6,900	[14],[16],[17]
Cost		6,900	[11]	6,900	[17]
Fair Value		6,900	[11]	5,965	[17]
Investment, Identifier [Axis]: Galaxy Technologies Holdings, Inc. – Term Debt 2
Schedule of Investments [Line Items]
Principal amount		18,796	[9],[10],[11]	18,796	[14],[16],[17]
Cost		18,796	[11]	18,796	[17]
Fair Value		$ 18,796	[11]	$ 16,250	[17]
Investment, Identifier [Axis]: Ginsey Home Solutions, Inc. – Common Stock
Schedule of Investments [Line Items]
Shares		63,747	[9],[10],[11],[12]	63,747	[14],[15],[16],[17]
Cost		$ 8	[11],[12]	$ 8	[15],[17]
Fair Value		$ 0	[11],[12]	$ 0	[15],[17]
Investment, Identifier [Axis]: Ginsey Home Solutions, Inc. – Preferred Stock
Schedule of Investments [Line Items]
Shares		19,280	[9],[10],[11],[12]	19,280	[14],[15],[16],[17]
Cost		$ 9,583	[11],[12]	$ 9,583	[15],[17]
Fair Value		0	[11],[12]	0	[15],[17]
Investment, Identifier [Axis]: Ginsey Home Solutions, Inc. – Term Debt
Schedule of Investments [Line Items]
Principal amount	[9],[10],[11]	12,200
Cost	[11]	12,200
Fair Value	[11]	12,153
Investment, Identifier [Axis]: Ginsey Home Solutions, Inc. – Term Debt
Schedule of Investments [Line Items]
Principal amount	[14],[16],[17]			12,200
Cost	[17]			12,200
Fair Value	[17]			$ 10,676
Investment, Identifier [Axis]: Gladstone SOG Investments, Inc. - Common Stock
Schedule of Investments [Line Items]
Shares	[14],[15],[16],[17]			100
Cost	[15],[17]			$ 620
Fair Value	[15],[17]			$ 713
Investment, Identifier [Axis]: Home Concepts Acquisition, Inc. - Line of Credit
Schedule of Investments [Line Items]
Principal amount	[9],[10],[11]	1,500
Cost	[11]	1,500
Fair Value	[11]	1,500
Investment, Identifier [Axis]: Home Concepts Acquisition, Inc. - Term Debt
Schedule of Investments [Line Items]
Principal amount	[9],[10],[11]	12,000
Cost	[11]	12,000
Fair Value	[11]	$ 12,000
Investment, Identifier [Axis]: Home Concepts Acquisition, Inc.- Preferred Stock
Schedule of Investments [Line Items]
Shares	[9],[10],[11],[12]	3,275,000
Cost	[11],[12]	$ 3,275
Fair Value	[11],[12]	$ 1,710
Investment, Identifier [Axis]: Horizon Facilities Services, Inc. – Preferred Stock
Schedule of Investments [Line Items]
Shares		10,080	[9],[10],[11],[12]	10,080	[14],[15],[16],[17]
Cost		$ 0	[11],[12]	$ 0	[15],[17]
Fair Value		5,382	[11],[12]	12,345	[15],[17]
Investment, Identifier [Axis]: Horizon Facilities Services, Inc. – Term Debt
Schedule of Investments [Line Items]
Principal amount		57,700	[9],[10],[11]	57,700	[14],[16],[17]
Cost		57,700	[11]	57,700	[17]
Fair Value		$ 57,700	[11]	$ 57,700	[17]
Investment, Identifier [Axis]: ImageWorks Display and Marketing Group, Inc. – Preferred Stock
Schedule of Investments [Line Items]
Shares		67,490	[9],[10],[11],[12]	67,490	[14],[15],[16],[17]
Cost		$ 6,749	[11],[12]	$ 6,749	[15],[17]
Fair Value		1,855	[11],[12]	10,926	[15],[17]
Investment, Identifier [Axis]: ImageWorks Display and Marketing Group, Inc. – Term Debt
Schedule of Investments [Line Items]
Principal amount		22,000	[9],[10],[11]	22,000	[14],[16],[17]
Cost		22,000	[11]	22,000	[17]
Fair Value		22,000	[11]	22,000	[17]
Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC - Line of Credit
Schedule of Investments [Line Items]
Principal amount	[14],[16],[17],[22]			5,000
Cost	[17],[22]			5,000
Fair Value	[17],[22]			2,744
Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC - Term Debt 1
Schedule of Investments [Line Items]
Principal amount		16,500	[9],[10],[11],[21]	16,500	[14],[16],[17],[22]
Cost		16,500	[11],[21]	16,500	[17],[22]
Fair Value		8,810	[11],[21]	9,054	[17],[22]
Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC - Term Debt 2
Schedule of Investments [Line Items]
Principal amount	[14],[16],[17],[22]			26,000
Cost	[17],[22]			26,000
Fair Value	[17],[22]			14,268
Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC - Term Debt 3
Schedule of Investments [Line Items]
Principal amount	[14],[16],[17],[22]			2,438
Cost	[17],[22]			2,438
Fair Value	[17],[22]			$ 1,338
Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC – Line of Credit
Schedule of Investments [Line Items]
Principal amount	[9],[10],[11],[21]	5,000
Cost	[11],[21]	5,000
Fair Value	[11],[21]	2,670
Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC – Term Debt 2
Schedule of Investments [Line Items]
Principal amount	[9],[10],[11],[21]	26,000
Cost	[11],[21]	26,000
Fair Value	[11],[21]	13,882
Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC – Term Debt 3
Schedule of Investments [Line Items]
Principal amount	[9],[10],[11],[21]	2,438
Cost	[11],[21]	2,438
Fair Value	[11],[21]	$ 1,301
Investment, Identifier [Axis]: J.R. Hobbs Co. – Atlanta, LLC – Preferred Stock
Schedule of Investments [Line Items]
Shares		10,920	[9],[10],[11],[12]	10,920	[14],[15],[16],[17]
Cost		$ 10,920	[11],[12]	$ 10,920	[15],[17]
Fair Value		$ 0	[11],[12]	$ 0	[15],[17]
Investment, Identifier [Axis]: Mason West, LLC – Preferred Stock
Schedule of Investments [Line Items]
Shares		11,206	[9],[10],[11],[12]	11,206	[14],[15],[16],[17]
Cost		$ 11,206	[11],[12]	$ 11,206	[15],[17]
Fair Value		20,146	[11],[12]	10,940	[15],[17]
Investment, Identifier [Axis]: Mason West, LLC – Term Debt
Schedule of Investments [Line Items]
Principal amount		25,250	[9],[10],[11]	25,250	[14],[16],[17]
Cost		25,250	[11]	25,250	[17]
Fair Value		25,250	[11]	25,250	[17]
Investment, Identifier [Axis]: Nocturne Luxury Villas, Inc. – Line of Credit
Schedule of Investments [Line Items]
Principal amount		4,000	[9],[10],[11]	0	[14],[16],[17]
Cost		4,000	[11]	0	[17]
Fair Value		$ 4,000	[11]	$ 0	[17]
Investment, Identifier [Axis]: Nocturne Luxury Villas, Inc. – Preferred Stock
Schedule of Investments [Line Items]
Shares		6,600	[9],[10],[11],[12]	6,600	[14],[15],[16],[17]
Cost		$ 6,600	[11],[12]	$ 6,600	[15],[17]
Fair Value		15,457	[11],[12]	16,263	[15],[17]
Investment, Identifier [Axis]: Nocturne Luxury Villas, Inc. – Term Debt
Schedule of Investments [Line Items]
Principal amount		61,100	[9],[10],[11],[25]	42,450	[14],[16],[17]
Cost		61,100	[11],[25]	42,450	[17]
Fair Value		$ 61,100	[11],[25]	$ 42,450	[17]
Investment, Identifier [Axis]: Nth Degree Investment Group, LLC – Common Stock
Schedule of Investments [Line Items]
Shares		17,216,976	[9],[10],[11],[12]	14,360,000	[14],[15],[16],[17]
Cost		$ 6,219	[11],[12]	$ 1,219	[15],[17]
Fair Value		36,309	[11],[12]	$ 15,243	[15],[17]
Investment, Identifier [Axis]: Nth Degree, Inc. – Term Debt
Schedule of Investments [Line Items]
Principal amount	[9],[10],[18]	25,000
Cost	[18]	25,000
Fair Value	[18]	$ 24,884
Investment, Identifier [Axis]: Old World Christmas, Inc. – Preferred Stock
Schedule of Investments [Line Items]
Shares		6,180	[9],[10],[11],[12]	6,180	[14],[15],[16],[17]
Cost		$ 0	[11],[12]	$ 0	[15],[17]
Fair Value		32,595	[11],[12]	33,990	[15],[17]
Investment, Identifier [Axis]: Old World Christmas, Inc. – Secured First Lien Term Loan
Schedule of Investments [Line Items]
Principal amount		43,000	[9],[10],[11]	40,500	[14],[16],[17]
Cost		43,000	[11]	40,500	[17]
Fair Value		$ 43,000	[11]	$ 40,500	[17]
Investment, Identifier [Axis]: PSI Molded Plastics, Inc. – Preferred Stock
Schedule of Investments [Line Items]
Shares		158,598	[9],[10],[11],[12]	158,598	[14],[15],[16],[17]
Cost		$ 19,730	[11],[12]	$ 19,730	[15],[17]
Fair Value		0	[11],[12]	0	[15],[17]
Investment, Identifier [Axis]: PSI Molded Plastics, Inc. – Term Debt
Schedule of Investments [Line Items]
Principal amount		26,618	[9],[10],[11]	26,618	[14],[16],[17]
Cost		26,618	[11]	26,618	[17]
Fair Value		19,256	[11]	24,892	[17]
Investment, Identifier [Axis]: Phoenix Door Systems, Inc – Line of Credit
Schedule of Investments [Line Items]
Principal amount		2,750	[9],[10],[11]	2,550	[14],[16],[20]
Cost		2,750	[11]	2,550	[20]
Fair Value		$ 2,750	[11]	$ 2,391	[20]
Investment, Identifier [Axis]: Phoenix Door Systems, Inc. – Common Stock
Schedule of Investments [Line Items]
Shares		4,221	[9],[10],[11],[12]	4,221	[14],[15],[16],[17]
Cost		$ 1,830	[11],[12]	$ 1,830	[15],[17]
Fair Value		0	[11],[12]	0	[15],[17]
Investment, Identifier [Axis]: Phoenix Door Systems, Inc. – Term Debt
Schedule of Investments [Line Items]
Principal amount		3,200	[9],[10],[11]	3,200	[14],[16],[20]
Cost		3,200	[11]	3,200	[20]
Fair Value		$ 2,544	[11]	$ 3,000	[20]
Investment, Identifier [Axis]: SFEG Holdings, Inc. – Common Stock
Schedule of Investments [Line Items]
Shares		18,721	[9],[10],[11],[12]	221,500	[14],[15],[16],[17]
Cost		$ 30,746	[11],[12]	$ 222	[15],[17]
Fair Value		37,649	[11],[12]	$ 0	[15],[17]
Investment, Identifier [Axis]: SFEG Holdings, Inc. – Preferred Stock
Schedule of Investments [Line Items]
Shares	[14],[15],[16],[17]			29,577
Cost	[15],[17]			$ 4,643
Fair Value	[15],[17]			4,444
Investment, Identifier [Axis]: SFEG Holdings, Inc. – Term Debt 1
Schedule of Investments [Line Items]
Principal amount		54,644	[9],[10],[11]	3,128	[14],[16],[17]
Cost		54,644	[11]	3,128	[17]
Fair Value		$ 54,644	[11]	3,128	[17]
Investment, Identifier [Axis]: SFEG Holdings, Inc. – Term Debt 2
Schedule of Investments [Line Items]
Principal amount	[14],[16],[17]			12,516
Cost	[17]			12,516
Fair Value	[17]			$ 12,516
Investment, Identifier [Axis]: Schylling, Inc. – Preferred Stock
Schedule of Investments [Line Items]
Shares		4,000	[9],[10],[11],[12]	4,000	[14],[15],[16],[17]
Cost		$ 4,000	[11],[12]	$ 4,000	[15],[17]
Fair Value		10,375	[11],[12]	18,922	[15],[17]
Investment, Identifier [Axis]: Schylling, Inc. – Term Debt
Schedule of Investments [Line Items]
Principal amount		27,981	[9],[10],[11]	27,981	[14],[16],[17]
Cost		27,981	[11]	27,981	[17]
Fair Value		27,981	[11]	$ 27,981	[17]
Investment, Identifier [Axis]: The E3 Company, LLC – Line of Credit
Schedule of Investments [Line Items]
Principal amount	[9],[10],[11]	1,000
Cost	[11]	1,000
Fair Value	[11]	$ 1,000
Investment, Identifier [Axis]: The E3 Company, LLC – Preferred Stock
Schedule of Investments [Line Items]
Shares	[9],[10],[11],[12]	11,233
Cost	[11],[12]	$ 11,233
Fair Value	[11],[12]	11,233
Investment, Identifier [Axis]: The E3 Company, LLC – Term Debt
Schedule of Investments [Line Items]
Principal amount	[9],[10],[11]	33,750
Cost	[11]	33,750
Fair Value	[11]	$ 33,750
Investment, Identifier [Axis]: The Maids International, LLC – Preferred Stock
Schedule of Investments [Line Items]
Shares		6,640	[9],[10],[11],[12]	6,640	[14],[15],[16],[17]
Cost		$ 6,640	[11],[12]	$ 6,640	[15],[17]
Fair Value		6,392	[11],[12]	3,200	[15],[17]
Investment, Identifier [Axis]: The Maids International, LLC – Term Debt
Schedule of Investments [Line Items]
Principal amount	[14],[16],[17]			28,560
Cost	[17]			28,560
Fair Value	[17]			$ 28,560
Investment, Identifier [Axis]: The Maids International, LLC – Term Debt
Schedule of Investments [Line Items]
Principal amount	[9],[10],[11]	28,560
Cost	[11]	28,560
Fair Value	[11]	$ 28,560
Investment, Identifier [Axis]: The Mountain Corporation – Common Stock
Schedule of Investments [Line Items]
Shares		751	[9],[10],[11],[12]	751	[14],[15],[16],[17]
Cost		$ 1	[11],[12]	$ 1	[15],[17]
Fair Value		0	[11],[12]	0	[15],[17]
Investment, Identifier [Axis]: The Mountain Corporation – Line of Credit
Schedule of Investments [Line Items]
Principal amount		4,550	[9],[10],[11],[21]	4,550	[14],[16],[17],[22]
Cost		4,550	[11],[21]	4,550	[17],[22]
Fair Value		$ 0	[11],[21]	$ 0	[17],[22]
Investment, Identifier [Axis]: The Mountain Corporation – Preferred Stock
Schedule of Investments [Line Items]
Shares		6,899	[9],[10],[11],[12]	6,899	[14],[15],[16],[17]
Cost		$ 6,899	[11],[12]	$ 6,899	[15],[17]
Fair Value		0	[11],[12]	0	[15],[17]
Investment, Identifier [Axis]: The Mountain Corporation – Term Debt
Schedule of Investments [Line Items]
Principal amount	[9],[10],[11],[21]	3,200
Cost	[11],[21]	3,200
Fair Value	[11],[21]	$ 0
Investment, Identifier [Axis]: The Mountain Corporation – Term Debt
Schedule of Investments [Line Items]
Principal amount	[14],[16],[17],[22]			3,200
Cost	[17],[22]			3,200
Fair Value	[17],[22]			$ 0
Investment, Identifier [Axis]: Utah Pacific Bridge & Steel, Ltd. - Preferred Stock
Schedule of Investments [Line Items]
Shares		6,000	[9],[10],[11],[12]	6,000	[14],[15],[16],[17]
Cost		$ 6,000	[11],[12]	$ 6,000	[15],[17]
Fair Value		9,581	[11],[12]	7,748	[15],[17]
Investment, Identifier [Axis]: Utah Pacific Bridge & Steel, Ltd. - Term Debt
Schedule of Investments [Line Items]
Principal amount	[14],[16],[17]			18,250
Cost	[17]			18,250
Fair Value	[17]			$ 18,250
Investment, Identifier [Axis]: Utah Pacific Bridge & Steel, Ltd., 2
Schedule of Investments [Line Items]
Principal amount	[9],[10],[11]	18,250
Cost	[11]	18,250
Fair Value	[11]	$ 18,250

[1] Cumulative gross unrealized appreciation for federal income tax purposes is $150.4 million; cumulative gross unrealized depreciation for federal income tax purposes is $119.3 million. Cumulative net unrealized appreciation is $31.1 million, based on a tax cost of $722.4 million.

[2] Non-Control/Non-Affiliate investments, as defined by the 1940 Act, are those that are neither Control nor Affiliate investments and in which we own less than 5.0% of the issued and outstanding voting securities.

[3] Non-Control/Non-Affiliate investments, as defined by the 1940 Act, are those that are neither Control nor Affiliate investments and in which we own less than 5.0% of the issued and outstanding voting securities.

[4] Affiliate investments, as defined by the 1940 Act, are those that are not Control investments and in which we own, with the power to vote, between and inclusive of 5.0% and 25.0% of the issued and outstanding voting securities.

[5] Affiliate investments, as defined by the 1940 Act, are those that are not Control investments and in which we own, with the power to vote, between and inclusive of 5.0% and 25.0% of the issued and outstanding voting securities.

[6] Control investments, as defined by the 1940 Act, are those where we have the power to exercise a controlling influence over the management or policies of the portfolio company, which may include owning, with the power to vote, more than 25.0% of the issued and outstanding voting securities.

[7] Control investments, as defined by the 1940 Act, are those where we have the power to exercise a controlling influence over the management or policies of the portfolio company, which may include owning, with the power to vote, more than 25.0% of the issued and outstanding voting securities.

[8] (K)One of our affiliated funds, Gladstone Capital Corporation, co-invested with us in this portfolio company pursuant to an exemptive order granted by the U.S. Securities and Exchange Commission.

[9] Represents the principal balance, presented in thousands, for debt investments and the number of shares/units held for equity investments. Warrants are represented as a percentage of ownership, as applicable.

[10] Where applicable, aggregates all shares of a class of stock owned without regard to specific series owned within such class (some series of which may or may not be voting shares) or aggregates all warrants to purchase shares of a class of stock owned without regard to specific series of such class of stock such warrants allow us to purchase.

[11] Fair value was based on the total enterprise value of the portfolio company, which is generally allocated to the portfolio company’s securities in order of their relative priority in the capital structure. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.

[12] Security is non-income producing

[13] One of our affiliated funds, Gladstone Capital Corporation, co-invested with us in this portfolio company pursuant to an exemptive order granted by the U.S. Securities and Exchange Commission.

[14] Represents the principal balance, presented in thousands, for debt investments and the number of shares/units held for equity investments. Warrants are represented as a percentage of ownership, as applicable.

[15] Security is non-income producing.

[16] Where applicable, aggregates all shares of a class of stock owned without regard to specific series owned within such class (some series of which may or may not be voting shares) or aggregates all warrants to purchase shares of a class of stock owned without regard to specific series of such class of stock such warrants allow us to purchase.

[17] Fair value was based on the total enterprise value of the portfolio company, which is generally allocated to the portfolio company’s securities in order of their relative priority in the capital structure. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.

[18] Fair value was based on an internal yield analysis or on estimates of value submitted by a third-party valuation firm. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.

[19] Fair value was based on the expected exit or payoff amount, where such even has occurred or is expected to occur imminently.

[20] Fair value was based on an internal yield analysis or on estimates of value submitted by a third-party valuation firm. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.

[21] Debt security is on non-accrual status.

[22] Debt security is on non-accrual status.

[23] Our investment in Funko was valued using Level 2 inputs within the ASC 820 fair value hierarchy. Our common units in Funko are convertible into class A common stock in Funko, Inc. upon meeting certain requirements. Fair value was based on the closing market price of shares of Funko, Inc. as of the reporting date, less a discount for lack of marketability. Funko, Inc. is traded on the Nasdaq Global Select Market under the trading symbol “FNKO.” Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.

[24] Our investment in Funko was valued using Level 2 inputs within the ASC 820 fair value hierarchy. Our common units in Funko are convertible into class A common stock in Funko, Inc. upon meeting certain requirements. Fair value was based on the closing market price of shares of Funko, Inc. as of the reporting date, less a discount for lack of marketability. Funko, Inc. is traded on the Nasdaq Global Select Market under the trading symbol “FNKO.” Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.

[25] Debt security is subject to an interest rate ceiling.

XML

CONSOLIDATED SCHEDULE OF INVESTMENTS (Parenthetical) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Jun. 30, 2023	[5],[6],[7],[8],[18]	Dec. 31, 2023		Mar. 31, 2023
Schedule of Investments [Line Items]
Investment owned, percent of net assets				196.30%	[1],[2],[3],[4]	171.40%	[5],[6],[7],[8],[9]
Investments owned, fair value				$ 902,808		$ 753,543	[9]
Percentage threshold of qualified assets representing total assets in order to acquire non-qualified assets				70.00%		70.00%
Investment, interest rate, paid in cash				5.40%		4.90%
Cumulative net unrealized appreciation						$ 150,400
Cumulative gross unrealized depreciation						119,300
Cumulative gross unrealized appreciation for federal income tax purposes						31,100
Based on a tax cost						$ 722,400
Funko Acquisition Holdings, LLC
Schedule of Investments [Line Items]
Percentage of acquired non-qualifying assets of total assets				0.10%		0.10%
Collateral Pledged
Schedule of Investments [Line Items]
Investments owned, fair value				$ 702,900		$ 639,500
Buildings and Real Estate
Schedule of Investments [Line Items]
Investments owned, fair value				64,352		60,571
Diversified/Conglomerate Services
Schedule of Investments [Line Items]
Investments owned, fair value				255,141		268,954
Healthcare, Education, and Childcare
Schedule of Investments [Line Items]
Investments owned, fair value				50,237		37,445
Home and Office Furnishings, Housewares, and Durable Consumer Products
Schedule of Investments [Line Items]
Investments owned, fair value				155,897		143,685
Hotels, Motels, Inns, and Gaming
Schedule of Investments [Line Items]
Investments owned, fair value				80,557		58,713
Leisure, Amusement, Motion Pictures, and Entertainment
Schedule of Investments [Line Items]
Investments owned, fair value				38,356		47,616
Oil and Gas
Schedule of Investments [Line Items]
Investments owned, fair value				45,983		0
Printing and Publishing
Schedule of Investments [Line Items]
Investments owned, fair value				15,210		0
Aerospace and Defense
Schedule of Investments [Line Items]
Investments owned, fair value				25,754		22,215
Cargo Transport
Schedule of Investments [Line Items]
Investments owned, fair value				13,500		14,707
Machinery (Non-Agriculture, Non-Construction, and Non-Electronic)
Schedule of Investments [Line Items]
Investments owned, fair value				92,293		20,088
Mining, Steel, Iron and Non-Precious Metals
Schedule of Investments [Line Items]
Investments owned, fair value				27,831		25,998
Telecommunications
Schedule of Investments [Line Items]
Investments owned, fair value				8,881		18,987
Chemicals, Plastics, and Rubber
Schedule of Investments [Line Items]
Investments owned, fair value				19,256		24,891
Secured First Lien Debt
Schedule of Investments [Line Items]
Investments owned, fair value				476,126		437,517
Secured Second Lien Debt
Schedule of Investments [Line Items]
Investments owned, fair value				137,480		75,734
Preferred Equity
Schedule of Investments [Line Items]
Investments owned, fair value				214,664		222,585
Common Equity/ Equivalents
Schedule of Investments [Line Items]
Investments owned, fair value				74,538		17,707
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Common Stock Warrants
Schedule of Investments [Line Items]
Investments owned, fair value				$ 0	[10],[11],[12]	$ 0	[13],[14],[15]
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Line of Credit
Schedule of Investments [Line Items]
Investment, reference rate and spread				2.00%	[1],[2],[3],[4],[10],[16]	11.00%	[5],[6],[7],[8],[13],[15]
Investment interest rate				7.40%	[1],[2],[3],[4],[10],[16]	15.90%	[5],[6],[7],[8],[13],[15]
Line of credit facility, available				$ 0	[1],[2],[3],[4],[10],[16]	$ 0	[5],[6],[7],[8],[13],[15]
Investments owned, fair value				$ 2,800	[10],[16]	2,800	[13],[15]
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value	[13],[14],[15]					$ 2,187
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread	[5],[6],[7],[8],[13],[15]					11.00%
Investment interest rate	[5],[6],[7],[8],[13],[15]					15.90%
Investments owned, fair value	[13],[15]					$ 14,000
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Term Debt 1
Schedule of Investments [Line Items]
Investment, reference rate and spread	[1],[2],[3],[4],[10],[16]			2.00%
Investment interest rate	[1],[2],[3],[4],[10],[16]			7.40%
Investments owned, fair value	[10],[16]			$ 6,081
Investment, Identifier [Axis]: B+T Group Acquisition, Inc.– Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value	[10],[11],[12]			0
Investment, Identifier [Axis]: Brunswick Bowling Products, Inc. – Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value				$ 43,599	[11],[12]	$ 33,969	[14],[15]
Investment, Identifier [Axis]: Brunswick Bowling Products, Inc. – Term Debt 1
Schedule of Investments [Line Items]
Investment, reference rate and spread				10.00%	[1],[2],[3],[4],[11]	10.00%	[5],[6],[7],[8],[15]
Investment interest rate				15.40%	[1],[2],[3],[4],[11]	14.90%	[5],[6],[7],[8],[15]
Investments owned, fair value				$ 17,700	[11]	$ 17,700	[15]
Investment, Identifier [Axis]: Brunswick Bowling Products, Inc. – Term Debt 2
Schedule of Investments [Line Items]
Investment, reference rate and spread				10.00%	[1],[2],[3],[4],[11]	10.00%	[5],[6],[7],[8],[15]
Investment interest rate				15.40%	[1],[2],[3],[4],[11]	14.90%	[5],[6],[7],[8],[15]
Investments owned, fair value				$ 6,850	[11]	$ 6,850	[15]
Investment, Identifier [Axis]: Counsel Press, Inc. – Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value	[14],[15]					$ 27,885
Investment, Identifier [Axis]: Counsel Press, Inc. – Term Debt 1
Schedule of Investments [Line Items]
Investment, reference rate and spread	[5],[6],[7],[8],[15]					11.80%
Investment interest rate	[5],[6],[7],[8],[15]					16.60%
Investments owned, fair value	[15]					$ 21,100
Investment, Identifier [Axis]: Counsel Press, Inc. – Term Debt 2
Schedule of Investments [Line Items]
Investment, reference rate and spread	[5],[6],[7],[8],[15]					13.00%
Investment interest rate	[5],[6],[7],[8],[15]					17.90%
Investments owned, fair value	[15]					$ 6,400
Investment, Identifier [Axis]: Dema/Mai Holdings, Inc - Preferred Equity
Schedule of Investments [Line Items]
Investments owned, fair value	[11],[12]			$ 26,102
Investment, Identifier [Axis]: Dema/Mai Holdings, Inc – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread	[1],[2],[3],[4],[11]			11.00%
Investment interest rate	[1],[2],[3],[4],[11]			16.40%
Investments owned, fair value	[11]			$ 38,250
Investment, Identifier [Axis]: Dema/Mai Holdings, Inc. – Preferred Equity
Schedule of Investments [Line Items]
Investments owned, fair value	[14],[15]					$ 22,321
Investment, Identifier [Axis]: Dema/Mai Holdings, Inc. – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread	[5],[6],[7],[8],[15]					11.00%
Investment interest rate	[5],[6],[7],[8],[15]					15.90%
Investments owned, fair value	[15]					$ 38,250
Investment, Identifier [Axis]: Diligent Delivery Systems – Common Stock Warrants
Schedule of Investments [Line Items]
Investments owned, fair value				$ 500	[12],[17]	$ 1,724	[14],[15]
Investment, Identifier [Axis]: Diligent Delivery Systems – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread				9.00%	[1],[2],[3],[4],[17]	9.00%	[5],[6],[7],[8],[18]
Investment interest rate				14.40%	[1],[2],[3],[4],[17]	13.90%	[5],[6],[7],[8],[18]
Investments owned, fair value				$ 13,000	[17]	$ 12,983	[18]
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc - Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread	[1],[2],[3],[4],[10],[11],[19]			5.50%
Investment interest rate	[1],[2],[3],[4],[10],[11],[19]			10.90%
Investments owned, fair value	[10],[11],[19]			$ 4,244
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc. - Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value	[10],[11],[12]			0
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc. – Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value	[13],[14],[15]					$ 0
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc. – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread	[5],[6],[7],[8],[13],[15],[20]					5.50%
Investment interest rate	[5],[6],[7],[8],[13],[15],[20]					10.40%
Investments owned, fair value	[13],[15],[20]					$ 4,255
Investment, Identifier [Axis]: Educators Resource, Inc. – Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value				$ 30,237	[11],[12]	$ 17,445	[14],[15]
Investment, Identifier [Axis]: Educators Resource, Inc. – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread				10.50%	[1],[2],[3],[4],[11]	10.50%	[5],[6],[7],[8],[15]
Investment interest rate				15.90%	[1],[2],[3],[4],[11]	15.40%	[5],[6],[7],[8],[15]
Investments owned, fair value				$ 20,000	[11]	$ 20,000	[15]
Investment, Identifier [Axis]: Funko Acquisition Holdings, LLC – Common Units
Schedule of Investments [Line Items]
Investments owned, fair value				22	[10],[12],[21]	27	[13],[14],[22]
Investment, Identifier [Axis]: Galaxy Technologies Holdings, Inc. – Common Stock
Schedule of Investments [Line Items]
Investments owned, fair value				$ 58	[11],[12]	$ 0	[14],[15]
Investment, Identifier [Axis]: Galaxy Technologies Holdings, Inc. – Term Debt 1
Schedule of Investments [Line Items]
Investment, reference rate and spread				4.10%	[1],[2],[3],[4],[11]	4.10%	[5],[6],[7],[8],[15]
Investment interest rate				9.50%	[1],[2],[3],[4],[11]	9.00%	[5],[6],[7],[8],[15]
Investments owned, fair value				$ 6,900	[11]	$ 5,965	[15]
Investment, Identifier [Axis]: Galaxy Technologies Holdings, Inc. – Term Debt 2
Schedule of Investments [Line Items]
Investment, reference rate and spread				7.00%	[1],[2],[3],[4],[11]	7.00%	[5],[6],[7],[8],[15]
Investment interest rate				12.40%	[1],[2],[3],[4],[11]	11.90%	[5],[6],[7],[8],[15]
Investments owned, fair value				$ 18,796	[11]	$ 16,250	[15]
Investment, Identifier [Axis]: Ginsey Home Solutions, Inc. – Common Stock
Schedule of Investments [Line Items]
Investments owned, fair value				0	[11],[12]	0	[14],[15]
Investment, Identifier [Axis]: Ginsey Home Solutions, Inc. – Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value				$ 0	[11],[12]	$ 0	[14],[15]
Investment, Identifier [Axis]: Ginsey Home Solutions, Inc. – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread	[1],[2],[3],[4],[11]			10.00%
Investment interest rate	[1],[2],[3],[4],[11]			15.40%
Investments owned, fair value	[11]			$ 12,153
Investment, Identifier [Axis]: Ginsey Home Solutions, Inc. – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread	[5],[6],[7],[8],[15]					10.00%
Investment interest rate	[5],[6],[7],[8],[15]					14.90%
Investments owned, fair value	[15]					$ 10,676
Investment, Identifier [Axis]: Gladstone SOG Investments, Inc. - Common Stock
Schedule of Investments [Line Items]
Investments owned, fair value	[14],[15]					713
Investment, Identifier [Axis]: Home Concepts Acquisition, Inc. - Line of Credit
Schedule of Investments [Line Items]
Investment, reference rate and spread	[1],[2],[3],[4],[11]			6.00%
Investment interest rate	[1],[2],[3],[4],[11]			11.40%
Line of credit facility, available	[1],[2],[3],[4],[11]			$ 500
Investments owned, fair value	[11]			$ 1,500
Investment, Identifier [Axis]: Home Concepts Acquisition, Inc. - Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread	[1],[2],[3],[4],[11]			9.00%
Investment interest rate	[1],[2],[3],[4],[11]			14.40%
Investments owned, fair value	[11]			$ 12,000
Investment, Identifier [Axis]: Home Concepts Acquisition, Inc.- Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value	[11],[12]			1,710
Investment, Identifier [Axis]: Horizon Facilities Services, Inc. – Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value				$ 5,382	[11],[12]	$ 12,345	[14],[15]
Investment, Identifier [Axis]: Horizon Facilities Services, Inc. – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread				7.50%	[1],[2],[3],[4],[11]	7.50%	[5],[6],[7],[8],[15]
Investment interest rate				12.90%	[1],[2],[3],[4],[11]	12.40%	[5],[6],[7],[8],[15]
Investments owned, fair value				$ 57,700	[11]	$ 57,700	[15]
Investment, Identifier [Axis]: ImageWorks Display and Marketing Group, Inc. – Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value				$ 1,855	[11],[12]	$ 10,926	[14],[15]
Investment, Identifier [Axis]: ImageWorks Display and Marketing Group, Inc. – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread				11.00%	[1],[2],[3],[4],[11]	11.00%	[5],[6],[7],[8],[15]
Investment interest rate				16.40%	[1],[2],[3],[4],[11]	15.90%	[5],[6],[7],[8],[15]
Investments owned, fair value				$ 22,000	[11]	$ 22,000	[15]
Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC - Line of Credit
Schedule of Investments [Line Items]
Investment, reference rate and spread	[5],[6],[7],[8],[15],[20]					6.00%
Investment interest rate	[5],[6],[7],[8],[15],[20]					10.90%
Line of credit facility, available	[5],[6],[7],[8],[15],[20]					$ 0
Investments owned, fair value	[15],[20]					$ 2,744
Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC - Term Debt 1
Schedule of Investments [Line Items]
Investment, reference rate and spread				6.00%	[1],[2],[3],[4],[11],[19]	6.00%	[5],[6],[7],[8],[15],[20]
Investment interest rate				11.40%	[1],[2],[3],[4],[11],[19]	10.90%	[5],[6],[7],[8],[15],[20]
Investments owned, fair value				$ 8,810	[11],[19]	$ 9,054	[15],[20]
Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC - Term Debt 2
Schedule of Investments [Line Items]
Investment, reference rate and spread	[5],[6],[7],[8],[15],[20]					10.30%
Investment interest rate	[5],[6],[7],[8],[15],[20]					15.10%
Investments owned, fair value	[15],[20]					$ 14,268
Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC - Term Debt 3
Schedule of Investments [Line Items]
Investment, reference rate and spread	[5],[6],[7],[8],[15],[20]					6.00%
Investment interest rate	[5],[6],[7],[8],[15],[20]					10.90%
Investments owned, fair value	[15],[20]					$ 1,338
Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC – Line of Credit
Schedule of Investments [Line Items]
Investment, reference rate and spread	[1],[2],[3],[4],[11],[19]			6.00%
Investment interest rate	[1],[2],[3],[4],[11],[19]			11.40%
Line of credit facility, available	[1],[2],[3],[4],[11],[19]			$ 0
Investments owned, fair value	[11],[19]			$ 2,670
Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC – Term Debt 2
Schedule of Investments [Line Items]
Investment, reference rate and spread	[1],[2],[3],[4],[11],[19]			10.30%
Investment interest rate	[1],[2],[3],[4],[11],[19]			15.60%
Investments owned, fair value	[11],[19]			$ 13,882
Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC – Term Debt 3
Schedule of Investments [Line Items]
Investment, reference rate and spread	[1],[2],[3],[4],[11],[19]			6.00%
Investment interest rate	[1],[2],[3],[4],[11],[19]			11.40%
Investments owned, fair value	[11],[19]			$ 1,301
Investment, Identifier [Axis]: J.R. Hobbs Co. – Atlanta, LLC – Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value				0	[11],[12]	0	[14],[15]
Investment, Identifier [Axis]: Mason West, LLC – Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value				$ 20,146	[11],[12]	$ 10,940	[14],[15]
Investment, Identifier [Axis]: Mason West, LLC – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread				10.00%	[1],[2],[3],[4],[11]	10.00%	[5],[6],[7],[8],[15]
Investment interest rate				15.40%	[1],[2],[3],[4],[11]	14.90%	[5],[6],[7],[8],[15]
Investments owned, fair value				$ 25,250	[11]	$ 25,250	[15]
Investment, Identifier [Axis]: Nocturne Luxury Villas, Inc. – Line of Credit
Schedule of Investments [Line Items]
Investment, reference rate and spread				8.00%	[1],[2],[3],[4],[11]	8.00%	[5],[6],[7],[8],[15]
Investment interest rate				13.40%	[1],[2],[3],[4],[11]	12.90%	[5],[6],[7],[8],[15]
Line of credit facility, available				$ 0	[1],[2],[3],[4],[11]	$ 2,000	[5],[6],[7],[8],[15]
Investments owned, fair value				4,000	[11]	0	[15]
Investment, Identifier [Axis]: Nocturne Luxury Villas, Inc. – Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value				$ 15,457	[11],[12]	$ 16,263	[14],[15]
Investment, Identifier [Axis]: Nocturne Luxury Villas, Inc. – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread				10.50%	[1],[2],[3],[4],[11],[23]	10.50%	[5],[6],[7],[8],[15]
Investment interest rate				14.50%	[1],[2],[3],[4],[11],[23]	15.40%	[5],[6],[7],[8],[15]
Investments owned, fair value				$ 61,100	[11],[23]	$ 42,450	[15]
Investment, Identifier [Axis]: Nth Degree Investment Group, LLC – Common Stock
Schedule of Investments [Line Items]
Investments owned, fair value				$ 36,309	[11],[12]	15,243	[14],[15]
Investment, Identifier [Axis]: Nth Degree, Inc. – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread	[1],[2],[3],[4],[16]			8.50%
Investment interest rate	[1],[2],[3],[4],[16]			13.90%
Investments owned, fair value	[16]			$ 24,884
Investment, Identifier [Axis]: Old World Christmas, Inc. – Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value				$ 32,595	[11],[12]	$ 33,990	[14],[15]
Investment, Identifier [Axis]: Old World Christmas, Inc. – Secured First Lien Term Loan
Schedule of Investments [Line Items]
Investment, reference rate and spread				9.50%	[1],[2],[3],[4],[11]	9.50%	[5],[6],[7],[8],[15]
Investment interest rate				14.90%	[1],[2],[3],[4],[11]	14.40%	[5],[6],[7],[8],[15]
Investments owned, fair value				$ 43,000	[11]	$ 40,500	[15]
Investment, Identifier [Axis]: PSI Molded Plastics, Inc. – Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value				$ 0	[11],[12]	$ 0	[14],[15]
Investment, Identifier [Axis]: PSI Molded Plastics, Inc. – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread				5.50%	[1],[2],[3],[4],[11]	5.50%	[5],[6],[7],[8],[15]
Investment interest rate				10.90%	[1],[2],[3],[4],[11]	10.40%	[5],[6],[7],[8],[15]
Investments owned, fair value				$ 19,256	[11]	$ 24,892	[15]
Investment, Identifier [Axis]: Phoenix Door Systems, Inc – Line of Credit
Schedule of Investments [Line Items]
Investment, reference rate and spread				7.00%	[1],[2],[3],[4],[11]	7.00%	[5],[6],[7],[8],[18]
Investment interest rate				12.40%	[1],[2],[3],[4],[11]	11.90%	[5],[6],[7],[8],[18]
Line of credit facility, available				$ 0	[1],[2],[3],[4],[11]	$ 0	[5],[6],[7],[8],[18]
Unused fee percentage		0.30%		0.30%	[1],[2],[3],[4],[11]
Investments owned, fair value				$ 2,750	[11]	2,391	[18]
Investment, Identifier [Axis]: Phoenix Door Systems, Inc. – Common Stock
Schedule of Investments [Line Items]
Investments owned, fair value				$ 0	[11],[12]	$ 0	[14],[15]
Investment, Identifier [Axis]: Phoenix Door Systems, Inc. – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread				11.00%	[1],[2],[3],[4],[11]	11.00%	[5],[6],[7],[8],[18]
Investment interest rate				16.40%	[1],[2],[3],[4],[11]	15.90%	[5],[6],[7],[8],[18]
Investments owned, fair value				$ 2,544	[11]	$ 3,000	[18]
Investment, Identifier [Axis]: SFEG Holdings, Inc. – Common Stock
Schedule of Investments [Line Items]
Investments owned, fair value				$ 37,649	[11],[12]	0	[14],[15]
Investment, Identifier [Axis]: SFEG Holdings, Inc. – Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value	[14],[15]					$ 4,444
Investment, Identifier [Axis]: SFEG Holdings, Inc. – Term Debt 1
Schedule of Investments [Line Items]
Investment, reference rate and spread				7.00%	[1],[2],[3],[4],[11]	7.00%	[5],[6],[7],[8],[15]
Investment interest rate				12.50%	[1],[2],[3],[4],[11]	11.90%	[5],[6],[7],[8],[15]
Investments owned, fair value				$ 54,644	[11]	$ 3,128	[15]
Investment, Identifier [Axis]: SFEG Holdings, Inc. – Term Debt 2
Schedule of Investments [Line Items]
Investment, reference rate and spread	[5],[6],[7],[8],[15]					7.00%
Investment interest rate	[5],[6],[7],[8],[15]					11.90%
Investments owned, fair value	[15]					$ 12,516
Investment, Identifier [Axis]: Schylling, Inc. – Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value				$ 10,375	[11],[12]	$ 18,922	[14],[15]
Investment, Identifier [Axis]: Schylling, Inc. – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread				11.00%	[1],[2],[3],[4],[11]	11.00%	[5],[6],[7],[8],[15]
Investment interest rate				16.40%	[1],[2],[3],[4],[11]	15.90%	[5],[6],[7],[8],[15]
Investments owned, fair value				$ 27,981	[11]	$ 27,981	[15]
Investment, Identifier [Axis]: The E3 Company, LLC – Line of Credit
Schedule of Investments [Line Items]
Investment, reference rate and spread	[1],[2],[3],[4],[11]			5.50%
Investment interest rate	[1],[2],[3],[4],[11]			10.90%
Line of credit facility, available	[1],[2],[3],[4],[11]			$ 1,000
Investments owned, fair value	[11]			1,000
Investment, Identifier [Axis]: The E3 Company, LLC – Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value	[11],[12]			$ 11,233
Investment, Identifier [Axis]: The E3 Company, LLC – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread	[1],[2],[3],[4],[11]			9.00%
Investment interest rate	[1],[2],[3],[4],[11]			14.40%
Investments owned, fair value	[11]			$ 33,750
Investment, Identifier [Axis]: The Maids International, LLC – Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value				$ 6,392	[11],[12]	$ 3,200	[14],[15]
Investment, Identifier [Axis]: The Maids International, LLC – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread	[5],[6],[7],[8],[15]					10.50%
Investment interest rate	[5],[6],[7],[8],[15]					15.40%
Investments owned, fair value	[15]					$ 28,560
Investment, Identifier [Axis]: The Maids International, LLC – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread	[1],[2],[3],[4],[11]			10.50%
Investment interest rate	[1],[2],[3],[4],[11]			15.90%
Investments owned, fair value	[11]			$ 28,560
Investment, Identifier [Axis]: The Mountain Corporation – Common Stock
Schedule of Investments [Line Items]
Investments owned, fair value				$ 0	[11],[12]	$ 0	[14],[15]
Investment, Identifier [Axis]: The Mountain Corporation – Line of Credit
Schedule of Investments [Line Items]
Investment, reference rate and spread				5.00%	[1],[2],[3],[4],[11],[19]	5.00%	[5],[6],[7],[8],[15],[20]
Investment interest rate				10.40%	[1],[2],[3],[4],[11],[19]	9.90%	[5],[6],[7],[8],[15],[20]
Line of credit facility, available				$ 0	[1],[2],[3],[4],[11],[19]	$ 150	[5],[6],[7],[8],[15],[20]
Investments owned, fair value				0	[11],[19]	0	[15],[20]
Investment, Identifier [Axis]: The Mountain Corporation – Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value				$ 0	[11],[12]	$ 0	[14],[15]
Investment, Identifier [Axis]: The Mountain Corporation – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread	[1],[2],[3],[4],[11],[19]			4.00%
Investment interest rate	[1],[2],[3],[4],[11],[19]			9.40%
Investments owned, fair value	[11],[19]			$ 0
Investment, Identifier [Axis]: The Mountain Corporation – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread	[5],[6],[7],[8],[15],[20]					4.00%
Investment interest rate	[5],[6],[7],[8],[15],[20]					8.90%
Investments owned, fair value	[15],[20]					$ 0
Investment, Identifier [Axis]: Utah Pacific Bridge & Steel, Ltd. - Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value				$ 9,581	[11],[12]	$ 7,748	[14],[15]
Investment, Identifier [Axis]: Utah Pacific Bridge & Steel, Ltd. - Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread	[5],[6],[7],[8],[15]					10.00%
Investment interest rate	[5],[6],[7],[8],[15]					14.90%
Investments owned, fair value	[15]					$ 18,250
Investment, Identifier [Axis]: Utah Pacific Bridge & Steel, Ltd., 2
Schedule of Investments [Line Items]
Investment, reference rate and spread	[1],[2],[3],[4],[11]			10.00%
Investment interest rate	[1],[2],[3],[4],[11]			15.40%
Investments owned, fair value	[11]			$ 18,250
Non-Control/Non-Affiliate Investments
Schedule of Investments [Line Items]
Investment owned, percent of net assets				134.90%	[1],[2],[3],[4],[24]	113.00%	[5],[6],[7],[8],[25]
Investments owned, fair value				$ 620,338	[24]	$ 496,875	[25]
Non-Control/Non-Affiliate Investments | Secured First Lien Debt
Schedule of Investments [Line Items]
Investment owned, percent of net assets				70.60%	[1],[2],[3],[4],[24]	63.60%	[5],[6],[7],[8],[25]
Investments owned, fair value				$ 324,528	[24]	$ 279,748	[25]
Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Buildings and Real Estate
Schedule of Investments [Line Items]
Investment owned, percent of net assets				8.30%	[1],[2],[3],[4],[24]	8.70%	[5],[6],[7],[8],[25]
Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Diversified/Conglomerate Manufacturing
Schedule of Investments [Line Items]
Investment owned, percent of net assets				1.20%	[1],[2],[3],[4],[24]	1.20%	[5],[6],[7],[8],[25]
Investments owned, fair value				$ 5,294	[24]	$ 5,391	[25]
Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Diversified/Conglomerate Services
Schedule of Investments [Line Items]
Investment owned, percent of net assets				18.00%	[1],[2],[3],[4],[24]	25.10%	[5],[6],[7],[8],[25]
Investments owned, fair value				$ 82,950	[24]	$ 110,450	[25]
Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Healthcare, Education, and Childcare
Schedule of Investments [Line Items]
Investment owned, percent of net assets				4.30%	[1],[2],[3],[4],[24]	4.50%	[5],[6],[7],[8],[25]
Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Home and Office Furnishings, Housewares, and Durable Consumer Products
Schedule of Investments [Line Items]
Investment owned, percent of net assets				8.00%	[1],[2],[3],[4],[24]	8.00%	[5],[6],[7],[8],[25]
Investments owned, fair value				$ 36,703	[24]	$ 35,226	[25]
Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Hotels, Motels, Inns, and Gaming
Schedule of Investments [Line Items]
Investment owned, percent of net assets				14.20%	[1],[2],[3],[4],[24]	9.70%	[5],[6],[7],[8],[25]
Investments owned, fair value				$ 65,100	[24]	$ 42,450	[25]
Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Leisure, Amusement, Motion Pictures, and Entertainment
Schedule of Investments [Line Items]
Investment owned, percent of net assets				6.10%	[1],[2],[3],[4],[24]	6.40%	[5],[6],[7],[8],[25]
Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Oil and Gas
Schedule of Investments [Line Items]
Investment owned, percent of net assets	[1],[2],[3],[4],[24]			7.60%
Investments owned, fair value	[24]			$ 34,750
Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Printing and Publishing
Schedule of Investments [Line Items]
Investment owned, percent of net assets	[1],[2],[3],[4],[24]			2.90%
Investments owned, fair value	[24]			$ 13,500
Non-Control/Non-Affiliate Investments | Secured Second Lien Debt
Schedule of Investments [Line Items]
Investment owned, percent of net assets				20.30%	[1],[2],[3],[4],[24]	11.60%	[5],[6],[7],[8],[25]
Investments owned, fair value				$ 93,340	[24]	$ 50,842	[25]
Non-Control/Non-Affiliate Investments | Secured Second Lien Debt | Aerospace and Defense
Schedule of Investments [Line Items]
Investment owned, percent of net assets				5.60%	[1],[2],[3],[4],[24]	5.00%	[5],[6],[7],[8],[25]
Investments owned, fair value				$ 25,696	[24]	$ 22,215	[25]
Non-Control/Non-Affiliate Investments | Secured Second Lien Debt | Cargo Transport
Schedule of Investments [Line Items]
Investment owned, percent of net assets				2.80%	[1],[2],[3],[4],[24]	3.00%	[5],[6],[7],[8],[25]
Non-Control/Non-Affiliate Investments | Secured Second Lien Debt | Machinery (Non-Agriculture, Non-Construction, and Non-Electronic)
Schedule of Investments [Line Items]
Investment owned, percent of net assets				11.90%	[1],[2],[3],[4],[24]	3.60%	[5],[6],[7],[8],[25]
Investments owned, fair value	[25]					$ 15,644
Non-Control/Non-Affiliate Investments | Preferred Equity
Schedule of Investments [Line Items]
Investment owned, percent of net assets				35.70%	[1],[2],[3],[4],[24]	37.40%	[5],[6],[7],[8],[25]
Investments owned, fair value				$ 164,241	[24]	$ 164,534	[25]
Non-Control/Non-Affiliate Investments | Preferred Equity | Buildings and Real Estate
Schedule of Investments [Line Items]
Investment owned, percent of net assets				5.70%	[1],[2],[3],[4],[24]	5.10%	[5],[6],[7],[8],[25]
Non-Control/Non-Affiliate Investments | Preferred Equity | Diversified/Conglomerate Services
Schedule of Investments [Line Items]
Investment owned, percent of net assets				5.50%	[1],[2],[3],[4],[24]	11.60%	[5],[6],[7],[8],[25]
Investments owned, fair value				$ 25,528	[24]	$ 51,170	[25]
Non-Control/Non-Affiliate Investments | Preferred Equity | Healthcare, Education, and Childcare
Schedule of Investments [Line Items]
Investment owned, percent of net assets				6.60%	[1],[2],[3],[4],[24]	4.00%	[5],[6],[7],[8],[25]
Non-Control/Non-Affiliate Investments | Preferred Equity | Home and Office Furnishings, Housewares, and Durable Consumer Products
Schedule of Investments [Line Items]
Investment owned, percent of net assets				9.50%	[1],[2],[3],[4],[24]	7.70%	[5],[6],[7],[8],[25]
Investments owned, fair value				$ 43,599	[24]	$ 33,969	[25]
Non-Control/Non-Affiliate Investments | Preferred Equity | Hotels, Motels, Inns, and Gaming
Schedule of Investments [Line Items]
Investment owned, percent of net assets				3.40%	[1],[2],[3],[4],[24]	3.70%	[5],[6],[7],[8],[25]
Non-Control/Non-Affiliate Investments | Preferred Equity | Leisure, Amusement, Motion Pictures, and Entertainment
Schedule of Investments [Line Items]
Investment owned, percent of net assets				2.20%	[1],[2],[3],[4],[24]	4.30%	[5],[6],[7],[8],[25]
Non-Control/Non-Affiliate Investments | Preferred Equity | Oil and Gas
Schedule of Investments [Line Items]
Investment owned, percent of net assets	[1],[2],[3],[4],[24]			2.40%
Non-Control/Non-Affiliate Investments | Preferred Equity | Printing and Publishing
Schedule of Investments [Line Items]
Investment owned, percent of net assets	[1],[2],[3],[4],[24]			0.40%
Non-Control/Non-Affiliate Investments | Preferred Equity | Machinery (Non-Agriculture, Non-Construction, and Non-Electronic)
Schedule of Investments [Line Items]
Investment owned, percent of net assets	[5],[6],[7],[8],[25]					1.00%
Non-Control/Non-Affiliate Investments | Common Equity/ Equivalents
Schedule of Investments [Line Items]
Investment owned, percent of net assets				8.30%	[1],[2],[3],[4],[24]	0.40%	[5],[6],[7],[8],[25]
Investments owned, fair value				$ 38,229	[24]	$ 1,751	[25]
Non-Control/Non-Affiliate Investments | Common Equity/ Equivalents | Diversified/Conglomerate Manufacturing
Schedule of Investments [Line Items]
Investment owned, percent of net assets	[5],[6],[7],[8],[25]					0.00%
Non-Control/Non-Affiliate Investments | Common Equity/ Equivalents | Home and Office Furnishings, Housewares, and Durable Consumer Products
Schedule of Investments [Line Items]
Investment owned, percent of net assets				0.00%	[1],[2],[3],[4],[24]	0.00%	[5],[6],[7],[8],[25]
Non-Control/Non-Affiliate Investments | Common Equity/ Equivalents | Aerospace and Defense
Schedule of Investments [Line Items]
Investment owned, percent of net assets				0.00%	[1],[2],[3],[4],[24]	0.00%	[5],[6],[7],[8],[25]
Non-Control/Non-Affiliate Investments | Common Equity/ Equivalents | Cargo Transport
Schedule of Investments [Line Items]
Investment owned, percent of net assets				0.10%	[1],[2],[3],[4],[24]	0.40%	[5],[6],[7],[8],[25]
Non-Control/Non-Affiliate Investments | Common Equity/ Equivalents | Machinery (Non-Agriculture, Non-Construction, and Non-Electronic)
Schedule of Investments [Line Items]
Investment owned, percent of net assets				8.20%	[1],[2],[3],[4],[24]	0.00%	[5],[6],[7],[8],[25]
Non-Control/Non-Affiliate Investments | Common Equity/ Equivalents | Personal and Non-Durable Consumer Products (Manufacturing Only)
Schedule of Investments [Line Items]
Investment owned, percent of net assets				0.00%	[1],[2],[3],[4],[24]	0.00%	[5],[6],[7],[8],[25]
Affiliate Investments
Schedule of Investments [Line Items]
Investment owned, percent of net assets				60.50%	[1],[2],[3],[4],[26]	58.20%	[5],[6],[7],[8],[27]
Investments owned, fair value				$ 278,226	[26]	$ 255,955	[27]
Affiliate Investments | Secured First Lien Debt
Schedule of Investments [Line Items]
Investment owned, percent of net assets				32.00%	[1],[2],[3],[4],[26]	35.80%	[5],[6],[7],[8],[27]
Investments owned, fair value				$ 147,354	[26]	$ 157,769	[27]
Affiliate Investments | Secured First Lien Debt | Diversified/Conglomerate Manufacturing
Schedule of Investments [Line Items]
Investment owned, percent of net assets	[5],[6],[7],[8],[27]					1.00%
Affiliate Investments | Secured First Lien Debt | Diversified/Conglomerate Services
Schedule of Investments [Line Items]
Investment owned, percent of net assets				16.80%	[1],[2],[3],[4],[26]	17.70%	[5],[6],[7],[8],[27]
Investments owned, fair value				$ 77,223	[26]	$ 77,964	[27]
Affiliate Investments | Secured First Lien Debt | Home and Office Furnishings, Housewares, and Durable Consumer Products
Schedule of Investments [Line Items]
Investment owned, percent of net assets				9.30%	[1],[2],[3],[4],[26]	9.20%	[5],[6],[7],[8],[27]
Affiliate Investments | Secured First Lien Debt | Mining, Steel, Iron and Non-Precious Metals
Schedule of Investments [Line Items]
Investment owned, percent of net assets				4.00%	[1],[2],[3],[4],[26]	4.10%	[5],[6],[7],[8],[27]
Affiliate Investments | Secured First Lien Debt | Telecommunications
Schedule of Investments [Line Items]
Investment owned, percent of net assets				1.90%	[1],[2],[3],[4],[26]	3.80%	[5],[6],[7],[8],[27]
Investments owned, fair value				$ 8,881	[26]	$ 16,800	[27]
Affiliate Investments | Secured Second Lien Debt
Schedule of Investments [Line Items]
Investment owned, percent of net assets				9.60%	[1],[2],[3],[4],[26]	5.70%	[5],[6],[7],[8],[27]
Investments owned, fair value				$ 44,140	[26]	$ 24,892	[27]
Affiliate Investments | Secured Second Lien Debt | Diversified/Conglomerate Services
Schedule of Investments [Line Items]
Investment owned, percent of net assets	[1],[2],[3],[4],[26]			5.40%
Affiliate Investments | Secured Second Lien Debt | Chemicals, Plastics, and Rubber
Schedule of Investments [Line Items]
Investment owned, percent of net assets				4.20%	[1],[2],[3],[4],[26]	5.70%	[5],[6],[7],[8],[27]
Affiliate Investments | Preferred Equity
Schedule of Investments [Line Items]
Investment owned, percent of net assets				11.00%	[1],[2],[3],[4],[26]	13.20%	[5],[6],[7],[8],[27]
Investments owned, fair value				$ 50,423	[26]	$ 58,051	[27]
Affiliate Investments | Preferred Equity | Diversified/Conglomerate Manufacturing
Schedule of Investments [Line Items]
Investment owned, percent of net assets	[5],[6],[7],[8],[27]					0.00%
Affiliate Investments | Preferred Equity | Diversified/Conglomerate Services
Schedule of Investments [Line Items]
Investment owned, percent of net assets				1.80%	[1],[2],[3],[4],[26]	3.20%	[5],[6],[7],[8],[27]
Investments owned, fair value				$ 8,247	[26]	$ 14,126	[27]
Affiliate Investments | Preferred Equity | Home and Office Furnishings, Housewares, and Durable Consumer Products
Schedule of Investments [Line Items]
Investment owned, percent of net assets				7.10%	[1],[2],[3],[4],[26]	7.70%	[5],[6],[7],[8],[27]
Affiliate Investments | Preferred Equity | Mining, Steel, Iron and Non-Precious Metals
Schedule of Investments [Line Items]
Investment owned, percent of net assets				2.10%	[1],[2],[3],[4],[26]	1.80%	[5],[6],[7],[8],[27]
Affiliate Investments | Preferred Equity | Telecommunications
Schedule of Investments [Line Items]
Investment owned, percent of net assets				0.00%	[1],[2],[3],[4],[26]	0.50%	[5],[6],[7],[8],[27]
Affiliate Investments | Preferred Equity | Chemicals, Plastics, and Rubber
Schedule of Investments [Line Items]
Investment owned, percent of net assets				0.00%	[1],[2],[3],[4],[26]	0.00%	[5],[6],[7],[8],[27]
Affiliate Investments | Common Equity/ Equivalents
Schedule of Investments [Line Items]
Investment owned, percent of net assets				7.90%	[1],[2],[3],[4],[26]	3.50%	[5],[6],[7],[8],[27]
Investments owned, fair value				$ 36,309	[26]	$ 15,243	[27]
Affiliate Investments | Common Equity/ Equivalents | Diversified/Conglomerate Services
Schedule of Investments [Line Items]
Investment owned, percent of net assets				7.90%	[1],[2],[3],[4],[26]	3.50%	[5],[6],[7],[8],[27]
Affiliate Investments | Common Equity/ Equivalents | Telecommunications
Schedule of Investments [Line Items]
Investment owned, percent of net assets				0.00%	[1],[2],[3],[4],[26]	0.00%	[5],[6],[7],[8],[27]
Control Investments
Schedule of Investments [Line Items]
Investment owned, percent of net assets				0.90%	[1],[2],[3],[4],[28]	0.20%	[5],[6],[7],[8],[29]
Investments owned, fair value				$ 4,244	[28]	$ 713	[29]
Control Investments | Secured First Lien Debt
Schedule of Investments [Line Items]
Investment owned, percent of net assets				0.90%	[1],[2],[3],[4],[28]	0.00%	[5],[6],[7],[8],[29]
Investments owned, fair value				$ 4,244	[28]	$ 0	[29]
Control Investments | Secured First Lien Debt | Diversified/Conglomerate Manufacturing
Schedule of Investments [Line Items]
Investment owned, percent of net assets	[1],[2],[3],[4],[28]			0.90%
Control Investments | Secured First Lien Debt | Personal and Non-Durable Consumer Products (Manufacturing Only)
Schedule of Investments [Line Items]
Investment owned, percent of net assets				0.00%	[1],[2],[3],[4],[28]	0.00%	[5],[6],[7],[8],[29]
Control Investments | Secured Second Lien Debt
Schedule of Investments [Line Items]
Investment owned, percent of net assets				0.00%	[1],[2],[3],[4],[28]	0.00%	[5],[6],[7],[8],[29]
Investments owned, fair value				$ 0	[28]	$ 0	[29]
Control Investments | Secured Second Lien Debt | Personal and Non-Durable Consumer Products (Manufacturing Only)
Schedule of Investments [Line Items]
Investment owned, percent of net assets				0.00%	[1],[2],[3],[4],[28]	0.00%	[5],[6],[7],[8],[29]
Control Investments | Preferred Equity
Schedule of Investments [Line Items]
Investment owned, percent of net assets				0.00%	[1],[2],[3],[4],[28]	0.00%	[5],[6],[7],[8],[29]
Investments owned, fair value				$ 0	[28]	$ 0	[29]
Control Investments | Preferred Equity | Diversified/Conglomerate Manufacturing
Schedule of Investments [Line Items]
Investment owned, percent of net assets	[1],[2],[3],[4],[28]			0.00%
Control Investments | Preferred Equity | Personal and Non-Durable Consumer Products (Manufacturing Only)
Schedule of Investments [Line Items]
Investment owned, percent of net assets				0.00%	[1],[2],[3],[4],[28]	0.00%	[5],[6],[7],[8],[29]
Control Investments | Common Equity/ Equivalents
Schedule of Investments [Line Items]
Investment owned, percent of net assets				0.00%	[1],[2],[3],[4],[28]	0.20%	[5],[6],[7],[8],[29]
Investments owned, fair value				$ 0	[28]	$ 713	[29]
Control Investments | Common Equity/ Equivalents | Leisure, Amusement, Motion Pictures, and Entertainment
Schedule of Investments [Line Items]
Investment owned, percent of net assets	[5],[6],[7],[8],[29]					0.20%
Control Investments | Common Equity/ Equivalents | Personal and Non-Durable Consumer Products (Manufacturing Only)
Schedule of Investments [Line Items]
Investment owned, percent of net assets				0.00%	[1],[2],[3],[4],[28]	0.00%	[5],[6],[7],[8],[29]

[1] Category percentages represent the fair value of each category and subcategory as a percentage of net assets as of December 31, 2023.

[2] Certain of the securities listed are issued by affiliate(s) of the indicated portfolio company. The majority of the securities listed, totaling $702.9 million at fair value, are pledged as collateral to our revolving line of credit, as described further in Note 5—Borrowings in the accompanying Notes to Consolidated Financial Statements. Additionally, under Section 55 of the Investment Company Act of 1940, as amended (the "1940 Act"), we may not acquire any non-qualifying assets unless, at the time such acquisition is made, qualifying assets represent at least 70% of our total assets. As of December 31, 2023, our investment in Funko Acquisition Holdings, LLC ("Funko") was considered a non-qualifying asset under Section 55 of the 1940 Act and represented less than 0.1% of total investments, at fair value.

[3] Unless indicated otherwise, all cash interest rates are indexed to 30 day Secured Overnight Financing Rate ("SOFR"), which was 5.4% as of December 31, 2023. If applicable, paid-in-kind interest rates are noted separately from the cash interest rate. Certain securities are subject to an interest rate floor. The cash interest rate is the greater of the floor or the reference rate plus a spread. Due dates represent the contractual maturity date.

[4] Unless indicated otherwise, all of our investments are valued using Level 3 inputs within the Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") Topic 820, "Fair Value Measurements and Disclosures" ("ASC 820") fair value hierarchy. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.

[5] Category percentages represent the fair value of each category and subcategory as a percentage of net assets as of March 31, 2023.

[6] Certain of the securities listed are issued by affiliate(s) of the indicated portfolio company. The majority of the securities listed, totaling $639.5 million at fair value, are pledged as collateral to our revolving line of credit, as described further in Note 5—Borrowings in the accompanying Notes to Consolidated Financial Statements. Additionally, under Section 55 of the 1940 Act, we may not acquire any non-qualifying assets unless, at the time such acquisition is made, qualifying assets represent at least 70% of our total assets. As of March 31, 2023, our investment in Funko was considered a non-qualifying asset under Section 55 of the 1940 Act and represented less than 0.1% of total investments, at fair value.

[7] Unless indicated otherwise, all cash interest rates are indexed to 30-day London Interbank Offered Rate ("LIBOR" or "L"), which was 4.9% as of March 31, 2023. If applicable, paid-in-kind interest rates are noted separately from the cash interest rate. Certain securities are subject to an interest rate floor. The cash interest rate is the greater of the floor or 30-day LIBOR plus a spread. Due dates represent the contractual maturity date.

[8] Unless indicated otherwise, all of our investments are valued using Level 3 inputs within the ASC 820 fair value hierarchy. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.

[9] Cumulative gross unrealized appreciation for federal income tax purposes is $150.4 million; cumulative gross unrealized depreciation for federal income tax purposes is $119.3 million. Cumulative net unrealized appreciation is $31.1 million, based on a tax cost of $722.4 million.

[10] (K)One of our affiliated funds, Gladstone Capital Corporation, co-invested with us in this portfolio company pursuant to an exemptive order granted by the U.S. Securities and Exchange Commission.

[11] Fair value was based on the total enterprise value of the portfolio company, which is generally allocated to the portfolio company’s securities in order of their relative priority in the capital structure. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.

[12] Security is non-income producing

[13] One of our affiliated funds, Gladstone Capital Corporation, co-invested with us in this portfolio company pursuant to an exemptive order granted by the U.S. Securities and Exchange Commission.

[14] Security is non-income producing.

[15] Fair value was based on the total enterprise value of the portfolio company, which is generally allocated to the portfolio company’s securities in order of their relative priority in the capital structure. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.

[16] Fair value was based on an internal yield analysis or on estimates of value submitted by a third-party valuation firm. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.

[17] Fair value was based on the expected exit or payoff amount, where such even has occurred or is expected to occur imminently.

[18] Fair value was based on an internal yield analysis or on estimates of value submitted by a third-party valuation firm. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.

[19] Debt security is on non-accrual status.

[20] Debt security is on non-accrual status.

[21] Our investment in Funko was valued using Level 2 inputs within the ASC 820 fair value hierarchy. Our common units in Funko are convertible into class A common stock in Funko, Inc. upon meeting certain requirements. Fair value was based on the closing market price of shares of Funko, Inc. as of the reporting date, less a discount for lack of marketability. Funko, Inc. is traded on the Nasdaq Global Select Market under the trading symbol “FNKO.” Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.

[22] Our investment in Funko was valued using Level 2 inputs within the ASC 820 fair value hierarchy. Our common units in Funko are convertible into class A common stock in Funko, Inc. upon meeting certain requirements. Fair value was based on the closing market price of shares of Funko, Inc. as of the reporting date, less a discount for lack of marketability. Funko, Inc. is traded on the Nasdaq Global Select Market under the trading symbol “FNKO.” Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.

[23] Debt security is subject to an interest rate ceiling.

[24] Non-Control/Non-Affiliate investments, as defined by the 1940 Act, are those that are neither Control nor Affiliate investments and in which we own less than 5.0% of the issued and outstanding voting securities.

[25] Non-Control/Non-Affiliate investments, as defined by the 1940 Act, are those that are neither Control nor Affiliate investments and in which we own less than 5.0% of the issued and outstanding voting securities.

[26] Affiliate investments, as defined by the 1940 Act, are those that are not Control investments and in which we own, with the power to vote, between and inclusive of 5.0% and 25.0% of the issued and outstanding voting securities.

[27] Affiliate investments, as defined by the 1940 Act, are those that are not Control investments and in which we own, with the power to vote, between and inclusive of 5.0% and 25.0% of the issued and outstanding voting securities.

[28] Control investments, as defined by the 1940 Act, are those where we have the power to exercise a controlling influence over the management or policies of the portfolio company, which may include owning, with the power to vote, more than 25.0% of the issued and outstanding voting securities.

[29] Control investments, as defined by the 1940 Act, are those where we have the power to exercise a controlling influence over the management or policies of the portfolio company, which may include owning, with the power to vote, more than 25.0% of the issued and outstanding voting securities.

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ORGANIZATION

9 Months Ended

Dec. 31, 2023

Organization, Consolidation and Presentation of Financial Statements [Abstract]

ORGANIZATION

ORGANIZATION

Gladstone Investment Corporation (“Gladstone Investment”) was incorporated under the General Corporation Law of the State of Delaware on February 18, 2005, and completed an initial public offering on June 22, 2005. The terms “the Company,” “we,” “our” and “us” all refer to Gladstone Investment and its consolidated subsidiaries. We are an externally advised, closed-end, non-diversified management investment company that has elected to be treated as a business development company (“BDC”) under the Investment Company Act of 1940, as amended (the “1940 Act”), and are applying the guidance of Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 946, “Financial Services-Investment Companies” (“ASC 946”). In addition, we have elected to be treated for U.S. federal income tax purposes as a regulated investment company (“RIC”) under the Internal Revenue Code of 1986, as amended (the “Code”). We were established for the purpose of investing in debt and equity securities of established private businesses in the United States (“U.S.”). Debt investments primarily take the form of two types of loans: secured first lien loans and secured second lien loans. Equity investments primarily take the form of preferred or common equity (or warrants or options to acquire the foregoing), often in connection with buyouts and other recapitalizations. Our investment objectives are to: (i) achieve and grow current income by investing in debt securities of established businesses that we believe will provide stable earnings and cash flow to pay expenses, make principal and interest payments on our outstanding indebtedness and make distributions to stockholders that grow over time, and (ii) provide our stockholders with long-term capital appreciation in the value of our assets by investing in equity securities of established businesses, generally in combination with the aforementioned debt securities, that we believe can grow over time to permit us to sell our equity investments for capital gains. We intend that our investment portfolio over time will consist of approximately 75.0% in debt investments and 25.0% in equity investments, at cost. As of December 31, 2023, our investment portfolio was comprised of 76.6% in debt investments and 23.4% in equity investments, at cost.

Gladstone Business Investment, LLC (“Business Investment”), a wholly-owned subsidiary of ours, was established on August 11, 2006 for the sole purpose of holding certain investments pledged as collateral under our line of credit. The financial statements of Business Investment are consolidated with those of Gladstone Investment.

We are externally managed by Gladstone Management Corporation (the “Adviser”), an affiliate of ours and a U.S. Securities and Exchange Commission (“SEC”) registered investment adviser, pursuant to an investment advisory and management agreement (the “Advisory Agreement”). Administrative services are provided by Gladstone Administration, LLC (the “Administrator”), an affiliate of ours and the Adviser, pursuant to an administration agreement (the “Administration Agreement”). Refer to Note 4 — Related Party Transactions for more information regarding these arrangements.

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

9 Months Ended

Dec. 31, 2023

Accounting Policies [Abstract]

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Unaudited Interim Financial Statements and Basis of Presentation

We prepare our interim financial statements in accordance with accounting principles generally accepted in the U.S. (“GAAP”) for interim financial information and pursuant to the requirements for reporting on Form 10-Q and Articles 6, 10 and 12 of SEC Regulation S-X. Accordingly, we have not included in this quarterly report all of the information and notes required by GAAP for annual financial statements. The accompanying Consolidated Financial Statements include our accounts and those of our wholly-owned subsidiaries. All significant intercompany balances and transactions have been eliminated. In accordance with Article 6 of Regulation S-X, we do not consolidate portfolio company investments. Under the investment company rules and regulations pursuant to the American Institute of Certified Public Accountants Audit and Accounting Guide for Investment Companies, codified in ASC 946, we are precluded from consolidating any entity other than another investment company, except that ASC 946 provides for the consolidation of a controlled operating company that provides substantially all of its services to the investment company or its consolidated subsidiaries. In our opinion, all adjustments, consisting solely of normal recurring accruals, necessary for the fair statement of financial statements for the interim periods have been included. The results of operations for the three and nine months ended December 31, 2023 are not necessarily indicative of results that ultimately may be achieved for the fiscal year ending March 31, 2024 or any future interim period. The interim financial statements and notes thereto should be read in conjunction with the financial

statements and notes thereto included in our annual report on Form 10-K for the fiscal year ended March 31, 2023, as filed with the SEC on May 10, 2023.

Use of Estimates

Preparing financial statements requires management to make estimates and assumptions that affect the amounts reported in our accompanying Consolidated Financial Statements and these Notes to Consolidated Financial Statements. Actual results may differ from those estimates.

Investment Valuation Policy

Accounting Recognition

We record our investments at fair value in accordance with the FASB ASC Topic 820, “Fair Value Measurements and Disclosures” (“ASC 820”) and the 1940 Act. Investment transactions are recorded on the trade date. Realized gains or losses are generally measured by the difference between the net proceeds from the repayment or sale and the cost basis of the investment, without regard to unrealized appreciation or depreciation previously recognized, and include investments charged off during the period, net of recoveries. Unrealized appreciation or depreciation primarily reflects the change in investment fair values, including the reversal of previously recorded unrealized appreciation or depreciation when gains or losses are realized.

Board Responsibility

Our board of directors (the “Board of Directors”) has approved investment valuation policies and procedures pursuant to Rule 2a-5 under the 1940 Act (the “Policy”) and, in July 2022, designated the Adviser to serve as the Board of Directors’ valuation designee ("Valuation Designee") under the 1940 Act.

In accordance with the 1940 Act, our Board of Directors has the ultimate responsibility for reviewing the good faith fair value determination of our investments for which market quotations are not readily available based on our Policy and for overseeing the Valuation Designee. Such review and oversight includes receiving written fair value determinations and supporting materials provided by the Valuation Designee, in coordination with the Administrator and with the oversight by the Company's chief valuation officer (collectively, the “Valuation Team”). The Valuation Committee of our Board of Directors (comprised entirely of independent directors) meets to review the valuation determinations and supporting materials, discusses the information provided by the Valuation Team, determines whether the Valuation Team has followed the Policy, and reviews other facts and circumstances, including current valuation risks, conflicts of interest, material valuation matters, appropriateness of valuation methodologies, back-testing results, price challenges/overrides, and ongoing monitoring and oversight of pricing services. After the Valuation Committee concludes its meeting, it and the chief valuation officer, representing the Valuation Designee, present the Valuation Committee’s findings on the Valuation Designee's determinations to the entire Board of Directors so that the full Board of Directors may review the Valuation Designee's determined fair values of such investments in accordance with the Policy.

There is no single standard for determining fair value (especially for privately-held businesses), as fair value depends upon the specific facts and circumstances of each individual investment. In determining the fair value of our investments, the Valuation Team, led by the chief valuation officer, uses the Policy, and each quarter the Valuation Committee and Board of Directors review the Policy to determine if changes thereto are advisable and whether the Valuation Team has applied the Policy consistently.

Use of Third-Party Valuation Firms

The Valuation Team engages third-party valuation firms to provide independent assessments of fair value of certain of our investments.

A third-party valuation firm generally provides estimates of fair value on our debt investments. The Valuation Team generally assigns the third-party valuation firm’s estimates of fair value to our debt investments where we do not have the ability to effectuate a sale of the applicable portfolio company. The Valuation Team corroborates this third-party valuation firm’s estimates of fair value using one or more of the valuation techniques discussed below. The Valuation Team’s estimate of value on a specific debt investment may significantly differ from the third-party valuation firm’s. When this occurs, our Valuation Committee and Board of Directors review whether the Valuation Team has followed the Policy and

the Valuation Committee reviews whether the Valuation Designee’s determined fair value is reasonable in light of the Policy and other relevant facts and circumstances.

We may engage other independent valuation firms to provide earnings multiple ranges, as well as other information, and evaluate such information for incorporation into the total enterprise value (“TEV”) of certain of our investments. Generally, at least once per year, we engage an independent valuation firm to value or review the valuation of each of our significant equity investments, which includes providing the information noted above. The Valuation Team evaluates such information for incorporation into our TEV, including review of all inputs provided by the independent valuation firm. The Valuation Team then presents a determination to our Valuation Committee as to the fair value. Our Valuation Committee reviews the determined fair value and whether it is reasonable in light of the Policy and other relevant facts and circumstances.

Valuation Techniques

In accordance with ASC 820, the Valuation Team uses the following techniques when valuing our investment portfolio:

•Total Enterprise Value — In determining the fair value using a TEV, the Valuation Team first calculates the TEV of the portfolio company by incorporating some or all of the following factors: the portfolio company’s ability to make payments and other specific portfolio company attributes; the earnings of the portfolio company (the trailing or projected twelve month revenue or earnings before interest, taxes, depreciation and amortization (“EBITDA”)); EBITDA multiples obtained from our indexing methodology whereby the original transaction EBITDA multiple at the time of our closing is indexed to a general subset of comparable disclosed transactions and EBITDA multiples from recent sales to third parties of similar securities in similar industries; a comparison to publicly traded securities in similar industries; and other pertinent factors. The Valuation Team generally reviews industry statistics and may use outside experts when gathering this information. Once the TEV is determined for a portfolio company, the Valuation Team generally allocates the TEV to the portfolio company’s securities based on the facts and circumstances of the securities, which typically results in the allocation of fair value to securities based on the order of their relative priority in the capital structure. Generally, the Valuation Team uses TEV to value our equity investments and, in the circumstances where we have the ability to effectuate a sale of a portfolio company, our debt investments.

TEV is primarily calculated using EBITDA and EBITDA multiples; however, TEV may also be calculated using revenue and revenue multiples or a discounted cash flow (“DCF”) analysis whereby future expected cash flows of the portfolio company are discounted to determine a net present value using estimated risk-adjusted discount rates, which incorporate adjustments for nonperformance and liquidity risks.

•Yield Analysis — The Valuation Team generally determines the fair value of our debt investments for which we do not have the ability to effectuate a sale of the applicable portfolio company using the yield analysis, which includes a DCF calculation and assumptions that the Valuation Team believes market participants would use, including: estimated remaining life, current market yield, current leverage, and interest rate spreads. This technique develops a modified discount rate that incorporates risk premiums including, among other things, increased probability of default, increased loss upon default, and increased liquidity risk. Generally, the Valuation Team uses the yield analysis to corroborate both estimates of value provided by a third-party valuation firm and market quotes.

•Market Quotes — For our investments for which a limited market exists, we generally base fair value on readily available and reliable market quotations, which are corroborated by the Valuation Team (generally by using the yield analysis described above). In addition, the Valuation Team assesses trading activity for similar investments and evaluates variances in quotations and other market insights to determine if any available quoted prices are reliable. Typically, the Valuation Team uses the lower indicative bid price in the bid-to-ask price range obtained from the respective originating syndication agent’s trading desk on or near the valuation date. The Valuation Team may take further steps to consider additional information to validate that price in accordance with the Policy. For securities that are publicly traded, we generally base fair value on the closing market price of the securities we hold as of the reporting date. For restricted securities that are publicly traded, we generally base fair value on the closing market price of the securities we hold as of the reporting date less a discount for the restriction, which includes consideration of the nature and term to expiration of the restriction and the lack of marketability of the security.

•Investments in Funds — For equity investments in other funds for which we cannot effectuate a sale of the fund, the Valuation Team generally determines the fair value of our invested capital at the net asset value (“NAV”) provided by the fund. Any invested capital that is not yet reflected in the NAV provided by the fund is valued at par value. The Valuation Team may also determine fair value of our investments in other investment funds based on the capital accounts of the underlying entity.

In addition to the valuation techniques listed above, the Valuation Team may also consider other factors when determining the fair value of our investments, including: the nature and realizable value of the collateral, including external parties’ guaranties, any relevant offers or letters of intent to acquire the portfolio company, timing of expected loan repayments, and the markets in which the portfolio company operates.

Fair value measurements of our investments may involve subjective judgments and estimates and, due to the uncertainty inherent in valuing these securities, the determinations of fair value may fluctuate from period to period and may differ materially from the values that could be obtained if a ready market for these securities existed. Our NAV could be materially affected if the determinations regarding the fair value of our investments are materially different from the values that we ultimately realize upon our disposal of such securities. Additionally, changes in the market environment and other events that may occur over the life of the investment may cause the gains or losses ultimately realized on these investments to be different than the valuations currently assigned. Further, such investments are generally subject to legal and other restrictions on resale or otherwise are less liquid than publicly traded securities. If we were required to liquidate a portfolio investment in a forced or liquidation sale, we could realize significantly less than the value at which it is recorded.

Refer to Note 3 — Investments for additional information regarding fair value measurements and our application of ASC 820.

Revenue Recognition

Interest Income Recognition

Interest income, adjusted for amortization of premiums, amendment fees and acquisition costs and the accretion of discounts, is recorded on the accrual basis to the extent that such amounts are expected to be collected. Generally, when a loan becomes 90 days or more past due, or if our qualitative assessment indicates that the debtor is unable to service its debt or other obligations, we will place the loan on non-accrual status and cease recognizing interest income on that loan until the borrower has demonstrated the ability and intent to pay contractual amounts due. However, we remain contractually entitled to this interest. Interest payments received on non-accrual loans may be recognized as income or applied to the cost basis, depending upon management’s judgment. Generally, non-accrual loans are restored to accrual status when past-due principal and interest are paid and, in management’s judgment, are likely to remain current, or, due to a restructuring, the interest income is deemed to be collectible. As of December 31, 2023, our loans to Edge Adhesives Holdings, Inc. ("Edge"), J.R. Hobbs Co. – Atlanta, LLC (“J.R. Hobbs”) and The Mountain Corporation (“The Mountain”) were on non-accrual status, with an aggregate debt cost basis of $66.9 million, or 10.0% of the cost basis of all debt investments in our portfolio, and an aggregate fair value of $30.9 million, or 5.0% of the fair value of all debt investments in our portfolio. As of March 31, 2023, our loans to Edge, J.R. Hobbs, and The Mountain were on non-accrual status, with an aggregate debt cost basis of $66.9 million, or 12.0% of the cost basis of all debt investments in our portfolio, and an aggregate fair value of $31.7 million, or 6.2% of the fair value of all debt investments in our portfolio.

Paid-in-kind (“PIK”) interest, computed at the contractual rate specified in the loan agreement, is added to the principal balance of the loan and recorded as interest income. As of December 31, 2023 and March 31, 2023, we did not have any loans with a PIK interest component.

Success Fee Income Recognition

We record success fees as income when earned, which often occurs upon receipt of cash. Success fees are generally contractually due upon a change of control in a portfolio company, typically resulting from an exit or sale, and are non-recurring.

Dividend Income Recognition

We accrue dividend income on preferred and common equity securities to the extent that such amounts are expected to be collected and if we have the option to collect such amounts in cash or other consideration.

Related Party Fees

We are party to the Advisory Agreement with the Adviser, which is indirectly owned and controlled by our chairman and chief executive officer. In accordance with the Advisory Agreement, we pay the Adviser fees as compensation for its services, consisting of a base management fee and an incentive fee. Additionally, we pay the Adviser a loan servicing fee as compensation for its services as servicer under the terms of the Fifth Amended and Restated Credit Agreement dated April 30, 2013, as amended from time to time (the "Credit Facility").

We are also party to the Administration Agreement with the Administrator, which is indirectly owned and controlled by our chairman and chief executive officer, whereby we pay separately for administrative services.

Refer to Note 4 — Related Party Transactions for additional information regarding these related party fees and agreements.

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INVESTMENTS

9 Months Ended

Dec. 31, 2023

Investments, Debt and Equity Securities [Abstract]

INVESTMENTS

INVESTMENTS

Fair Value

In accordance with ASC 820, the fair value of our investments is determined to be the price that would be received for an investment in a current sale, which assumes an orderly transaction between willing market participants on the measurement date. This fair value definition focuses on exit price in the principal, or most advantageous, market and prioritizes, within a measurement of fair value, the use of market-based inputs over entity-specific inputs. ASC 820 also establishes the following three-level hierarchy for fair value measurements based upon the transparency of inputs to the valuation of a financial instrument as of the measurement date.

•Level 1 — inputs to the valuation methodology are quoted prices (unadjusted) for identical financial instruments in active markets;

•Level 2 — inputs to the valuation methodology include quoted prices for similar financial instruments in active or inactive markets, and inputs that are observable for the financial instrument, either directly or indirectly, for substantially the full term of the financial instrument. Level 2 inputs are those in markets for which there are few transactions, the prices are not current, little public information exists, or instances where prices vary substantially over time or among brokered market makers; and

•Level 3 — inputs to the valuation methodology are unobservable and significant to the fair value measurement. Unobservable inputs are those inputs that reflect assumptions that market participants would use when pricing the financial instrument and can include the Valuation Team’s assumptions based upon the best available information.

When a determination is made to classify our investments within Level 3 of the valuation hierarchy, such determination is based upon the significance of the unobservable factors to the overall fair value measurement. However, Level 3 financial instruments typically include, in addition to the unobservable, or Level 3, inputs, observable inputs (or components that are actively quoted and can be validated to external sources). The level in the fair value hierarchy within which the fair value measurement falls is determined based on the lowest level input that is significant to the fair value measurement.

As of December 31, 2023 and March 31, 2023, all of our investments were valued using Level 3 inputs within the ASC 820 fair value hierarchy, except for our investment in Funko Acquisition Holdings, LLC (“Funko”), which was valued using Level 2 inputs.

We transfer investments in and out of Level 1, 2 and 3 of the valuation hierarchy as of the beginning balance sheet date, based on changes in the use of observable and unobservable inputs utilized to perform the valuation for the period. There were no transfers in or out of Level 1, 2 and 3 during the nine months ended December 31, 2023 and 2022, respectively.

As of December 31, 2023 and March 31, 2023, our investments, by security type, at fair value were categorized as follows within the ASC 820 fair value hierarchy:

			Fair Value Measurements
	Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
As of December 31, 2023:
Secured first lien debt	$	476,126	$	—	$	—		$	476,126
Secured second lien debt	137,480		—		—			137,480
Preferred equity	214,664		—		—			214,664
Common equity/equivalents	74,538		—		22		(A)	74,516
Total Investments as of December 31, 2023	$	902,808	$	—	$	22		$	902,786

			Fair Value Measurements
	Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
As of March 31, 2023:
Secured first lien debt	$	437,517	$	—	$	—		$	437,517
Secured second lien debt	75,734		—		—			75,734
Preferred equity	222,585		—		—			222,585
Common equity/equivalents	17,707		—		27		(A)	17,680
Total Investments as of March 31, 2023	$	753,543	$	—	$	27		$	753,516

(A)Fair value was determined based on the closing market price of shares of Funko, Inc. (our units in Funko can be converted into common shares of Funko, Inc.) at the reporting date less a discount for lack of marketability, as our investment was subject to certain restrictions.

The following table presents our investments, valued using Level 3 inputs within the ASC 820 fair value hierarchy, and carried at fair value as of December 31, 2023 and March 31, 2023, by caption on our accompanying Consolidated Statements of Assets and Liabilities, and by security type:

	Total Recurring Fair Value Measurements Reported in Consolidated Statements of Assets and Liabilities Valued Using Level 3 Inputs
	December 31, 2023		March 31, 2023
Non-Control/Non-Affiliate Investments
Secured first lien debt	$	324,528	$	279,748
Secured second lien debt	93,340		50,842
Preferred equity	164,241		164,534
Common equity/equivalents(A)	38,207		1,724
Total Non-Control/Non-Affiliate Investments	620,316		496,848
Affiliate Investments
Secured first lien debt	147,354		157,769
Secured second lien debt	44,140		24,892
Preferred equity	50,423		58,051
Common equity/equivalents	36,309		15,243
Total Affiliate Investments	278,226		255,955
Control Investments
Secured first lien debt	4,244		—
Secured second lien debt	—		—
Preferred equity	—		—
Common equity/equivalents	—		713
Total Control Investments	4,244		713
Total investments at fair value using Level 3 inputs	$	902,786	$	753,516

(A)Excludes our investment in Funko with a fair value of $22 thousand and $27 thousand as of December 31, 2023 and March 31, 2023, respectively, which was valued using Level 2 inputs.

In accordance with ASC 820, the following table provides quantitative information about our investments valued using Level 3 fair value measurements as of December 31, 2023 and March 31, 2023. The table below is not intended to be all-inclusive, but rather provides information on the significant Level 3 inputs as they relate to our fair value measurements. The weighted-average calculations in the table below are based on the principal balances for all debt-related calculations and on the cost basis for all equity-related calculations for the particular input.

	Quantitative Information about Level 3 Fair Value Measurements
	Fair Value as of				Valuation Technique/ Methodology	Unobservable Input	Range / Weighted-Average as of
	December 31, 2023		March 31, 2023				December 31, 2023	March 31, 2023
Secured first lien debt	$	476,126	$	432,126	TEV	EBITDA multiple	4.0x – 9.0x / 6.5x	4.4x – 7.7x / 6.4x
						EBITDA	$1,100–$22,168 / $10,884	$4,251 – $19,083 / $10,764
						Revenue multiple	0.3x – 0.6x / 0.4x	0.3x – 0.6x / 0.3x
						Revenue	$15,332 – $98,136 / $73,695	$15,483 – $109,615 / $94,957
	—		5,391		Yield Analysis	Discount Rate	N/A	19.4% – 19.9% / 19.7%
Secured second lien debt	112,595		62,750		TEV	EBITDA multiple	5.1x – 10.9x /  6.5x	5.4x – 6.6x / 6.2x
						EBITDA	$5,839 – $8,771 / $7,706	$4,112 – $6,379 / $5,501
	24,885		12,984		Yield Analysis	Discount Rate	14.0% – 14.0% / 14.0%	14.0% – 14.0% / 14.0%
Preferred equity	214,664		222,585		TEV	EBITDA multiple	4.0x – 9.0x / 6.1x	4.4x – 7.7x / 5.9x
						EBITDA	$3,135 – $22,168 / $9,974	$4,251 – $19,083 / $9,486
						Revenue multiple	0.3x – 0.6x / 0.4x	0.3x – 0.6x / 0.4x
						Revenue	$15,332 – $98,136 / $56,766	$15,483 – $109,615 / $69,247
Common equity/ equivalents(A)	74,516		17,680		TEV	EBITDA multiple	5.0x – 10.9x / 6.0x	4.7x – 7.2x / 6.4x
						EBITDA	$1,100 – $60,199 / $14,476	$1,105 – $30,833 / $6,273
Total	$	902,786	$	753,516

(A)Fair value as of both December 31, 2023 and March 31, 2023 excludes our investment in Funko with a fair value of $22 thousand and $27 thousand, respectively, which was valued using Level 2 inputs.

Fair value measurements can be sensitive to changes in one or more of the valuation inputs. Changes in discount rates, EBITDA or EBITDA multiples (or revenue or revenue multiples), each in isolation, may change the fair value of certain of our investments. Generally, an increase/(decrease) in discount rates or a (decrease)/increase in EBITDA or EBITDA multiples (or revenue or revenue multiples) may result in a (decrease)/increase in the fair value of certain of our investments.

Changes in Level 3 Fair Value Measurements of Investments

The following tables provide our portfolio’s changes in fair value, broken out by security type, during the three and nine months ended December 31, 2023 and 2022 for all investments for which the Adviser determines fair value using unobservable (Level 3) inputs.

Fair Value Measurements Using Significant Unobservable Inputs (Level 3)

	Secured First Lien Debt		Secured Second Lien Debt		Preferred Equity		Common Equity/ Equivalents		Total
Three Months ended December 31, 2023:
Fair value as of September 30, 2023	$	508,504	$	102,747	$	267,596	$	36,767	$	915,614
Total gain (loss):
Net realized gain (loss)(A)	—		—		43,459		—		43,459
Net unrealized appreciation (depreciation)(B)	(7,040)		(4,267)		4,911		3,428		(2,968)
Reversal of previously recorded (appreciation) depreciation upon realization(B)	(1,338)		—		(42,228)		—		(43,566)
New investments, repayments and settlements(C):
Issuances / originations	3,500		39,000		—		25,700		68,200
Settlements / repayments	(27,500)		—		—		—		(27,500)
Sales	—		—		(50,453)		—		(50,453)
Transfers(E)	—		—		(8,621)		8,621		—
Fair value as of December 31, 2023	$	476,126	$	137,480	$	214,664	$	74,516	$	902,786

	Secured First Lien Debt		Secured Second Lien Debt		Preferred Equity		Common Equity/ Equivalents		Total
Nine Months Ended December 31, 2023
Fair value as of March 31, 2023	$	437,517	$	75,734	$	222,585	$	17,680	$	753,516
Total gain (loss):
Net realized gain (loss)(A)	—		—		43,732		882		44,614
Net unrealized appreciation (depreciation)(B)	(6,153)		(2,254)		35,234		18,228		45,055
Reversal of previously recorded (appreciation) depreciation upon realization(B)	(1,338)		—		(42,228)		(93)		(43,659)
New investments, repayments and settlements(C):
Issuances / originations	73,600		64,000		14,688		30,700		182,988
Settlements / repayments	(27,500)		—		—		—		(27,500)
Sales(D)	—		—		(50,726)		(1,502)		(52,228)
Transfers(E)	—		—		(8,621)		8,621		—
Fair value as of December 31, 2023	$	476,126	$	137,480	$	214,664	$	74,516	$	902,786

	Secured First Lien Debt		Secured Second Lien Debt		Preferred Equity		Common Equity/ Equivalents		Total
Three Months ended December 31, 2022:
Fair value as of September 30, 2022	$	420,907	$	76,751	$	229,430	$	10,789	$	737,877
Total gain (loss):
Net realized gain (loss)(A)	—		(10,000)		13,372		—		3,372
Net unrealized appreciation (depreciation)(B)	(2,516)		(266)		(7,656)		3,829		(6,609)
Reversal of previously recorded (appreciation) depreciation upon realization(B)	—		10,001		—		—		10,001
New investments, repayments and settlements(C):
Issuances / originations	29,900		1,183		—		380		31,463
Settlements / repayments	(800)		(1,500)		—		—		(2,300)
Sales(D)	—		—		(13,372)		—		(13,372)
Transfers	—		—		—		—		—
Fair value as of December 31, 2022	$	447,491	$	76,169	$	221,774	$	14,998	$	760,432

	Secured First Lien Debt		Secured Second Lien Debt		Preferred Equity		Common Equity/ Equivalents		Total
Nine Months Ended December 31, 2022:
Fair value as of March 31, 2022	$	425,087	$	67,958	$	217,599	$	3,678	$	714,322
Total gain (loss):
Net realized gain (loss)(A)	—		(10,000)		20,318		—		10,318
Net unrealized appreciation (depreciation)(B)	(21,328)		(4,800)		10,405		10,940		(4,783)
Reversal of previously recorded (appreciation) depreciation upon realization(B)	—		10,001		(12,250)		—		(2,249)
New investments, repayments and settlements(C):
Issuances / originations	106,950		5,188		21,000		380		133,518
Settlements / repayments	(48,800)		(6,596)		—		—		(55,396)
Sales(D)	—		—		(35,298)		—		(35,298)
Transfers(E)	(14,418)		14,418		—		—		—
Fair value as of December 31, 2022	$	447,491	$	76,169	$	221,774	$	14,998	$	760,432

Included in net realized gain (loss) on investments on our accompanying Consolidated Statements of Operations for the respective periods ended December 31, 2023 and 2022.

(B)Included in net unrealized appreciation (depreciation) of investments on our accompanying Consolidated Statements of Operations for the respective periods ended December 31, 2023 and 2022.

(C)Includes increases in the cost basis of investments resulting from new portfolio investments, the amortization of discounts and other non-cash disbursements to portfolio companies, as well as decreases in the cost basis of investments resulting from principal repayments or sales, the amortization of premiums and acquisition costs, and other cost-basis adjustments.

(D)The nine months ended December 31, 2023 includes $0.3 million of proceeds from the recapitalization of Old World Christmas, Inc. ("Old World"). The three and nine months ended December 31, 2022 include $13.4 million of proceeds from the recapitalization of Old World. The nine months ended December 31, 2022 also includes $12.3 million return of equity cost basis from Horizon Facilities Services, Inc.

(E)2023: Transfers represent preferred equity of SFEG Holdings, Inc. ("SFEG") with a total cost basis and fair value of $4.8 million and $8.6 million, respectively, which was converted to common equity in October 2023.

2022: Transfers represent (1) secured second lien debt of Ginsey Home Solutions, Inc. with a total cost basis and fair value of $12.2 million, which was converted into secured first lien debt in August 2022 and (2) secured first lien debt of PSI Molded Plastics, Inc. with a total cost basis and fair value of $26.6 million, which was converted into secured second lien debt in September 2022.

Investment Activity

During the nine months ended December 31, 2023, the following significant transactions occurred:

•In May 2023, we invested $15.3 million in a new portfolio company, Home Concepts Acquisition, Inc. ("Home Concepts"), in the form of $12.0 million of secured first lien debt and $3.3 million of preferred equity. Home Concepts, headquartered in Santa Barbara, California, is a leading home improvement advertising publication focusing on connecting homeowners to high-quality residential repair and remodeling businesses.

•In June 2023, we recapitalized our existing investment in Old World and invested an additional $2.5 million in the form of secured first lien debt. In connection with this investment, we received proceeds of $2.2 million, of which $1.9 million was recognized as dividend income and $0.3 million was recognized as a realized gain.

•In June 2023, we invested an additional $30.0 million in the form of $25.0 million of secured second lien debt and $5.0 million of common equity in Nth Degree Investment Group, LLC to fund an add-on acquisition.

•In June 2023, we received a $1.5 million escrow settlement in connection with our December 2021 exit of SOG Specialty Knives & Tools, LLC, of which $0.6 million was recognized as a return of cost basis and $0.9 million as a realized gain. As a result of the escrow release, there are no remaining assets held by Gladstone SOG Investments, Inc.

•In August 2023, we invested an additional $18.7 million in the form of secured first lien debt in Nocturne Villa Rentals, Inc. ("Nocturne") to fund an add-on acquisition.

•In September 2023, we invested $46.0 million in a new portfolio company, The E3 Company, LLC ("E3"), in the form of $34.8 million of secured first lien debt and $11.2 million of preferred equity. E3, headquartered in Kilgore, Texas, is a market leader in advanced pressure management solutions for oil and gas well completions.

•In October 2023, we invested an additional $64.7 million in the form of $39.0 million of secured second lien debt and $25.7 million of common equity in SFEG to fund an add-on acquisition. In connection with the investment, our existing preferred equity with a cost basis of $4.8 million was converted to common equity.

•In October 2023, we exited our investment in Counsel Press, Inc., which resulted in success fee income of $1.4 million, a realized gain of $43.5 million and the repayment of our debt investment of $27.5 million at par.

Investment Concentrations

As of December 31, 2023, our investment portfolio consisted of investments in 25 portfolio companies located in 18 states across 16 different industries with an aggregate fair value of $902.8 million. Our investments in SFEG, Nocturne, Old World, Brunswick Bowling Products, Inc. and Dema/Mai Holdings, Inc. represented our five largest portfolio investments at fair value and collectively comprised $380.9 million, or 42.2%, of our total investment portfolio at fair value as of December 31, 2023.

The following table summarizes our investments by security type as of December 31, 2023 and March 31, 2023:

	December 31, 2023								March 31, 2023
	Cost				Fair Value				Cost				Fair Value
Secured first lien debt	$	517,539	59.6	%	$	476,126	52.7	%	$	471,439	65.4	%	$	437,517	58.1	%
Secured second lien debt	148,158		17.0	%	137,480		15.2	%	84,158		11.7	%	75,734		10.1	%
Total debt	665,697		76.6	%	613,606		67.9	%	555,597		77.1	%	513,251		68.2	%
Preferred equity	151,969		17.5	%	214,664		23.8	%	149,099		20.7	%	222,585		29.5	%
Common equity/equivalents	50,838		5.9	%	74,538		8.3	%	15,934		2.2	%	17,707		2.3	%
Total equity/equivalents	202,807		23.4	%	289,202		32.1	%	165,033		22.9	%	240,292		31.8	%
Total investments	$	868,504	100.0	%	$	902,808	100.0	%	$	720,630	100.0	%	$	753,543	100.0	%

Investments at fair value consisted of the following industry classifications as of December 31, 2023 and March 31, 2023:

	December 31, 2023				March 31, 2023
	Fair Value		Percentage of Total Investments		Fair Value		Percentage of Total Investments
Diversified/Conglomerate Services	$	255,141	28.3	%	$	268,954	35.7	%
Home and Office Furnishings, Housewares, and Durable Consumer Products	155,897		17.3	%	143,685		19.1	%
Machinery (Non-Agriculture, Non-Construction, and Non-Electronic)	92,293		10.2	%	20,088		2.7	%
Hotels, Motels, Inns, and Gaming	80,557		8.9	%	58,713		7.8	%
Buildings and Real Estate	64,352		7.1	%	60,571		8.0	%
Healthcare, Education, and Childcare	50,237		5.6	%	37,445		5.0	%
Oil and Gas	45,983		5.1	%	—		—	%
Leisure, Amusement, Motion Pictures, and Entertainment	38,356		4.2	%	47,616		6.3	%
Mining, Steel, Iron and Non-Precious Metals	27,831		3.1	%	25,998		3.5	%
Aerospace and Defense	25,754		2.9	%	22,215		2.8	%
Chemicals, Plastics, and Rubber	19,256		2.1	%	24,891		3.3	%
Printing and Publishing	15,210		1.7	%	—		—	%
Cargo Transport	13,500		1.5	%	14,707		2.0	%
Telecommunications	8,881		1.0	%	18,987		2.5	%
Other < 2.0%	9,560		1.0	%	9,673		1.3	%
Total investments	$	902,808	100.0	%	$	753,543	100.0	%

Investments at fair value were included in the following geographic regions of the U.S. as of December 31, 2023 and March 31, 2023:

	December 31, 2023				March 31, 2023
Location	Fair Value		Percentage of Total Investments		Fair Value		Percentage of Total Investments
South	$	326,849	36.2	%	$	171,056	22.7	%
West	228,407		25.3	%	197,989		26.3	%
Northeast	213,403		23.6	%	266,612		35.4	%
Midwest	134,149		14.9	%	117,886		15.6	%
Total investments	$	902,808	100.0	%	$	753,543	100.0	%

The geographic region indicates the location of the headquarters for our portfolio companies. A portfolio company may have additional business locations in other geographic regions.

Investment Principal Repayments

The following table summarizes the contractual principal repayment and maturity of our investment portfolio by fiscal year, assuming no voluntary prepayments, as of December 31, 2023:

		Amount
For the remaining three months ending March 31, 2024		$	33,918
For the fiscal years ending March 31:
	2025	100,470
	2026	204,919
	2027	162,746
	2028	38,250
	Thereafter	125,394
	Total contractual repayments	$	665,697
	Investments in equity securities	202,807
	Total cost basis of investments held as of December 31, 2023:	$	868,504

Receivables from Portfolio Companies

Receivables from portfolio companies represent non-recurring costs that we incurred on behalf of portfolio companies. Such receivables, net of any allowance for uncollectible receivables, are included in Other assets, net on our accompanying Consolidated Statements of Assets and Liabilities. We generally maintain an allowance for uncollectible receivables from portfolio companies when the receivable balance becomes 90 days or more past due or if it is determined, based upon management’s judgment, that the portfolio company is unable to pay its obligations. We write off accounts receivable when we have exhausted collection efforts and have deemed the receivables uncollectible. As of December 31, 2023 and March 31, 2023, we had gross receivables from portfolio companies of $2.3 million and $2.2 million, respectively. As of both December 31, 2023 and March 31, 2023, the allowance for uncollectible receivables was $1.6 million.

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RELATED PARTY TRANSACTIONS

9 Months Ended

Dec. 31, 2023

Related Party Transactions [Abstract]

RELATED PARTY TRANSACTIONS

RELATED PARTY TRANSACTIONS

Transactions with the Adviser

We pay the Adviser certain fees as compensation for its services under the Advisory Agreement, consisting of a base management fee and an incentive fee and a loan servicing fee for the Adviser’s role as servicer pursuant to the Credit Facility, all as described below. On July 11, 2023, our Board of Directors, including a majority of the directors who are not parties to the Advisory Agreement or interested persons of either party, approved the annual renewal of the Advisory Agreement through August 31, 2024.

Two of our executive officers, David Gladstone (our chairman and chief executive officer) and Terry Lee Brubaker (our chief operating officer) serve as directors and executive officers of the Adviser, which is 100% indirectly owned and controlled by Mr. Gladstone. David Dullum (our president) is also the executive vice president of private equity (buyouts) of the Adviser. Michael LiCalsi, our general counsel and secretary (who also serves as the Administrator’s president, general counsel and secretary), is also the executive vice president of administration, general counsel, and secretary of our Adviser.

The following table summarizes the base management fees, loan servicing fees, incentive fees, and associated non-contractual, unconditional, and irrevocable credits reflected in our accompanying Consolidated Statements of Operations:

	Three Months Ended December 31,						Nine Months Ended December 31,
	2023			2022			2023			2022
Average total assets subject to base management fee(A)	$	920,400		$	757,800		$	858,267		$	731,000
Multiplied by prorated annual base management fee of 2.0%	0.5		%	0.5		%	1.5		%	1.5		%
Base management fee(B)	4,602			3,789			12,874			10,965
Credits to fees from Adviser - other(B)	(1,793)			(756)			(5,117)			(3,131)
Net base management fee	$	2,809		$	3,033		$	7,757		$	7,834
Loan servicing fee(B)	2,332			2,080			6,829			5,754
Credits to base management fee - loan servicing fee(B)	(2,332)			(2,080)			(6,829)			(5,754)
Net loan servicing fee	$	—		$	—		$	—		$	—
Incentive fee – income-based	$	2,282		$	2,503		$	6,142		$	7,016
Incentive fee – capital gains-based(C)	(615)			1,442			9,259			706
Total incentive fee(B)	$	1,667		$	3,945		$	15,401		$	7,722
Credits to fees from Adviser - other(B)	—			—			—			—
Net total incentive fee	$	1,667		$	3,945		$	15,401		$	7,722

(A)Average total assets subject to the base management fee is defined in the Advisory Agreement as total assets, including investments made with proceeds of borrowings, less any uninvested cash or cash equivalents resulting from borrowings, valued at the end of the applicable quarters within the respective periods and adjusted appropriately for any share issuances or repurchases during the periods.

(B)Reflected as a line item on our accompanying Consolidated Statements of Operations.

(C)The capital gains-based incentive fees are recorded in accordance with GAAP and do not necessarily reflect amounts contractually due under the terms of the Advisory Agreement.

Base Management Fee

The base management fee is payable quarterly to the Adviser pursuant to our Advisory Agreement and is assessed at an annual rate of 2.0%, computed on the basis of the value of our average gross assets at the end of the two most recently completed quarters (inclusive of the current quarter), which are total assets, including investments made with proceeds of borrowings, less any uninvested cash or cash equivalents resulting from borrowings, valued at the end of the applicable quarters within the respective period and adjusted appropriately for any share issuances or repurchases during the period.

Additionally, pursuant to the requirements of the 1940 Act, the Adviser makes available significant managerial assistance to our portfolio companies. The Adviser may also provide other services to our portfolio companies under certain agreements and may receive fees for services other than managerial assistance. Such services may include: (i) assistance obtaining, sourcing or structuring credit facilities, long term loans or additional equity from unaffiliated third parties; (ii) negotiating important contractual financial relationships; (iii) consulting services regarding restructuring of the portfolio company and financial modeling as it relates to raising additional debt and equity capital from unaffiliated third parties; and (iv) taking a primary role in interviewing, vetting and negotiating employment contracts with candidates in connection with adding and retaining key portfolio company management team members. The Adviser non-contractually, unconditionally, and irrevocably credits 100% of any fees received for such services against the base management fee that we would otherwise be required to pay to the Adviser; however, pursuant to the terms of the Advisory Agreement, a small percentage of certain of such fees was retained by the Adviser in the form of reimbursement, at cost, for tasks completed by personnel of the Adviser, primarily related to the valuation of portfolio companies. For the three months ended December 31, 2023 and 2022, these credits totaled $57 thousand and $40 thousand, respectively. For the nine months ended December 31, 2023 and 2022, these credits totaled $215 thousand and $146 thousand, respectively.

Loan Servicing Fee

The Adviser also services the loans held by our wholly-owned subsidiary, Business Investment (the borrower under the Credit Facility), in return for which the Adviser receives a 2.0% annual fee based on the monthly aggregate outstanding balance of loans pledged under the Credit Facility. Since Business Investment is a consolidated subsidiary of ours, coupled with the fact that the total base management fee paid to the Adviser pursuant to the Advisory Agreement cannot exceed 2.0% of total assets (less any uninvested cash or cash equivalents resulting from borrowings) during any given calendar year, we treat payment of the loan servicing fee pursuant to the Credit Facility as a pre-payment of the base management fee under the Advisory Agreement. Accordingly, these loan servicing fees are 100% non-contractually, unconditionally, and irrevocably credited back to us by the Adviser.

Incentive Fee

The incentive fee payable to the Adviser under our Advisory Agreement consists of two parts: an income-based incentive fee and a capital gains-based incentive fee.

The income-based incentive fee rewards the Adviser if our quarterly net investment income (before giving effect to any incentive fee) exceeds 1.75% of our net assets, which we define as total assets less indebtedness and before taking into account any incentive fees payable or contractually due but not payable during the period, at the end of the immediately preceding calendar quarter, adjusted appropriately for any share issuances or repurchases during the period (the “Hurdle Rate”). The income-based incentive fee with respect to our pre-incentive fee net investment income is payable quarterly to the Adviser and is computed as follows:

•No incentive fee in any calendar quarter in which our pre-incentive fee net investment income does not exceed the Hurdle Rate;

•100.0% of our pre-incentive fee net investment income with respect to that portion of such pre-incentive fee net investment income, if any, that exceeds the Hurdle Rate but is less than 2.1875% of our net assets, adjusted appropriately for any share issuances or repurchases during the period, in any calendar quarter; and

•20.0% of the amount of our pre-incentive fee net investment income, if any, that exceeds 2.1875% of our net assets, adjusted appropriately for any share issuances or repurchases during the period, in any calendar quarter.

The second part of the incentive fee is a capital gains-based incentive fee that is determined and payable in arrears as of the end of each fiscal year (or upon termination of the Advisory Agreement, as of the termination date), and equals 20.0% of our realized capital gains, less any realized capital losses and unrealized depreciation, calculated as of the end of the preceding calendar year. The capital gains-based incentive fee payable to the Adviser is calculated based on (i) cumulative aggregate realized capital gains since our inception, less (ii) cumulative aggregate realized capital losses since our inception, less (iii) the entire portfolio’s aggregate unrealized capital depreciation, if any, as of the date of the calculation. If this number is positive at the applicable calculation date, then the capital gains-based incentive fee for such year equals 20.0% of such amount, less the aggregate amount of any capital gains-based incentive fees paid in respect of our portfolio in all prior years. For calculation purposes, cumulative aggregate realized capital gains, if any, equals the sum of the excess between the net sales price of each investment, when sold, and the original cost of such investment since our inception. Cumulative aggregate realized capital losses equals the sum of the deficit between the net sales price of each investment, when sold, and the original cost of such investment since our inception. The entire portfolio’s aggregate unrealized capital depreciation, if any, equals the sum of the deficit between the fair value of each investment security as of the applicable calculation date and the original cost of such investment security. As of December 31, 2023, $1.1 million of capital gains-based incentive fees were determined to be contractually due to the Adviser. During the year ended March 31, 2023, no capital gains-based incentive fees were contractually due and paid to the Adviser.

In accordance with GAAP, accrual of the capital gains-based incentive fee is determined as if our investments had been liquidated at their fair values as of the end of the reporting period. Therefore, GAAP requires that the capital gains-based incentive fee accrual consider the aggregate unrealized capital appreciation in the calculation, as a capital gains-based incentive fee would be payable if such unrealized capital appreciation were realized. There can be no assurance that any such unrealized capital appreciation will be realized in the future. Accordingly, a GAAP accrual is calculated at the end of the reporting period based on (i) cumulative aggregate realized capital gains since our inception, plus (ii) the entire portfolio’s aggregate unrealized capital appreciation, if any, less (iii) cumulative aggregate realized capital losses since our inception, less (iv) the entire portfolio’s aggregate unrealized capital depreciation, if any. If such amount is positive at the end of a reporting period, a capital gains-based incentive fee equal to 20.0% of such amount, less the aggregate amount of capital gains-based incentive fees accrued in all prior years, is recorded, regardless of whether such amount is contractually due under the terms of the Advisory Agreement. If such amount is negative, then there is no accrual for such period and prior period accruals are reversed, as appropriate. During the three and nine months ended December 31, 2023, we recorded a reversal of capital gains-based incentive fees of $0.6 million and an accrual of capital gains-based incentive fees of $9.3 million, respectively. During the three and nine months ended December 31, 2022, we recorded capital gains-based incentive fees of $1.4 million and $0.7 million, respectively.

Transactions with the Administrator

We reimburse the Administrator pursuant to the Administration Agreement for our allocable portion of the Administrator’s expenses incurred while performing services to us, which are primarily rent and salaries and benefits expenses of the Administrator’s employees, including our chief financial officer and treasurer, chief valuation officer, chief compliance officer, and general counsel and secretary, and their respective staffs. Two of our executive officers, David Gladstone (our chairman and chief executive officer) and Terry Lee Brubaker (our chief operating officer) serve as members of the board of managers and executive officers of the Administrator, which is 100% indirectly owned and controlled by Mr. Gladstone. Another of our officers, Mr. LiCalsi (our general counsel and secretary), serves as the Administrator’s president as well as the executive vice president of administration, general counsel, and secretary for the Adviser.

Our allocable portion of the Administrator’s expenses is generally derived by multiplying the Administrator’s total expenses by the approximate percentage of time during the current quarter the Administrator’s employees performed services for us in relation to their time spent performing services for all companies serviced by the Administrator. On July 11, 2023, our Board of Directors, including a majority of the directors who are not parties to the Administration Agreement or interested persons of either party, approved the annual renewal of the Administration Agreement through August 31, 2024. Administration fees for the three and nine months ended December 31, 2023 were $0.5 million and $1.3 million, respectively. Administration fees for the three and nine months ended December 31, 2022 were $0.4 million and $1.4 million, respectively.

Transactions with Gladstone Securities, LLC

Gladstone Securities, LLC (“Gladstone Securities”) is a privately held broker dealer registered with the Financial Industry Regulatory Authority and insured by the Securities Investor Protection Corporation. Gladstone Securities is an affiliate of ours, as its parent company is 100% indirectly owned and controlled by David Gladstone, our chairman and chief executive officer. Mr. Gladstone also serves on the board of managers of Gladstone Securities.

Other Transactions

From time to time, Gladstone Securities provides services, such as investment banking and due diligence services, to certain of our portfolio companies, for which it receives a fee. Any such fees paid by portfolio companies to Gladstone Securities do not impact the fees we pay to the Adviser or the non-contractual, unconditional, and irrevocable credits against the base management fee. No fees were received by Gladstone Securities from our portfolio companies during the three months ended December 31, 2023. During the nine months ended December 31, 2023, the fees received by Gladstone Securities from our portfolio companies totaled $0.3 million. During the three and nine months ended December 31, 2022, the fees received by Gladstone Securities from our portfolio companies totaled $0.3 million and $1.6 million, respectively.

Related Party Fees Due

Amounts due to related parties on our accompanying Consolidated Statements of Assets and Liabilities were as follows:

	As of December 31,		As of March 31,
	2023		2023
Base management and loan servicing fee due to Adviser, net of credits	$	1,006	$	1,574
Incentive fee due to Adviser(A)	36,640		27,259
Other due to Adviser	47		86
Total fees due to Adviser	37,693		28,919
Fee due to Administrator	575		716
Total related party fees due	$	38,268	$	29,635

(A)Includes a capital gains-based incentive fee of $34.4 million and $25.1 million as of December 31, 2023 and March 31, 2023, respectively, recorded in accordance with GAAP requirements, and which was not contractually due under the terms of the Advisory Agreement. Refer to Note 4 — Related Party Transactions — Transactions with the Adviser — Incentive Fee for additional information, including capital gains-based incentive fee payments made.

Co-investment expenses as of December 31, 2023 were $22 thousand. There were no co-investment expenses as of March 31, 2023. These amounts are generally settled in the quarter subsequent to being incurred and have been included in Other assets, net on the accompanying Consolidated Statements of Assets and Liabilities.

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BORROWINGS

9 Months Ended

Dec. 31, 2023

Debt Disclosure [Abstract]

BORROWINGS

BORROWINGS

Revolving Line of Credit

On October 30, 2023, we, through our wholly-owned subsidiary, Business Investment, entered into Amendment No. 8 to the Credit Facility with KeyBank National Association ("KeyBank") as administrative agent, lead arranger, managing agent and lender, the Adviser, as servicer, and certain other lenders party thereto. Among other things, the revolving period was extended to October 30, 2026, and if not renewed or extended by such date, all principal and interest will be due and payable by October 30, 2028 (two years after the revolving period end date). Advances under the Credit Facility generally bear interest at 30-day Term SOFR, subject to a floor of 0.35%, plus 3.15% per annum until October 30, 2026, with the margin then increasing to 3.40% for the period from October 30, 2026 to October 30, 2027, and increasing further to 3.65% thereafter with a SOFR credit spread adjustment of 10 basis points. The Credit Facility has an unused commitment fee on the daily unused commitment amount of 0.50% per annum if the daily unused commitment amount is less than or equal to 50% of the total commitment amount, 0.75% per annum if the daily unused commitment amount is greater than 50% but less than or equal to 65% of the total commitment amount, and 1.00% per annum if the daily unused commitment amount is greater than 65% of the total commitment amount. The size of the Credit Facility was reduced from $180.0 million to $135.0 million.

On April 10, 2023, we, through our wholly-owned subsidiary, Business Investment, entered into Amendment No. 7 to the Credit Facility with KeyBank as administrative agent, lead arranger, managing agent and lender, the Adviser, as servicer, and certain other lenders party thereto. The reference rate was updated from LIBOR to Term SOFR plus an 11 basis point credit spread adjustment.

The following tables summarize noteworthy information related to the Credit Facility:

	As of December 31, 2023		As of March 31, 2023
Commitment amount	$	135,000	$	180,000
Borrowings outstanding at cost	$	82,600	$	35,200
Availability(A)	$	52,400	$	144,800

	For the Three Months Ended December 31,						For the Nine Months Ended December 31,
	2023			2022			2023			2022
Weighted-average borrowings outstanding	$	77,359		$	26,054		$	57,135		$	12,621
Effective interest rate(B)	9.2		%	12.8		%	10.2		%	19.8		%
Commitment (unused) fees incurred	$	113		$	394		$	777		$	1,279

(A)Availability is subject to various constraints, characteristics and applicable advance rates based on collateral quality under the Credit Facility, which equated to an adjusted availability of $52.4 million and $144.8 million as of December 31, 2023 and March 31, 2023, respectively.

(B)Excludes the impact of deferred financing costs and includes unused commitment fees.

Among other things, the Credit Facility contains a performance guaranty that requires us to maintain: (i) a minimum net worth of the greater of $210.0 million or $210.0 million plus 50% of all equity and subordinated debt raised, minus 50% of any equity or subordinated debt redeemed or retired after November 16, 2016, which equated to $339.0 million as of December 31, 2023; (ii) asset coverage with respect to senior securities representing indebtedness of at least 150% (or such percentage as may be set forth in Section 18 of the 1940 Act, as modified by Section 61 of the 1940 Act); and (iii) our status as a BDC under the 1940 Act and as a RIC under the Code. As of December 31, 2023, and as defined in the performance guaranty of the Credit Facility, we had a net worth of $789.8 million, asset coverage on our senior securities representing indebtedness of 206.9%, calculated in compliance with the requirements of Sections 18 and 61 of the 1940 Act, and an active status as a BDC and RIC. As of December 31, 2023, we were in compliance with all covenants under the Credit Facility.

Fair Value

We elected to apply the fair value option of ASC Topic 825, “Financial Instruments,” to the Credit Facility, which was consistent with our application of ASC 820 to our investments. Generally, the fair value of the Credit Facility is determined using a yield analysis, which includes a DCF calculation and also takes into account the assumptions the Valuation Team believes market participants would use, including the estimated remaining life, counterparty credit risk, current market yield and interest rate spreads of similar securities as of the measurement date. As of December 31, 2023, the discount rate used to determine the fair value of the Credit Facility was 30-day Term SOFR, with a 0.35% floor, plus 3.25% per annum, plus an unused commitment fee of 0.50%. As of March 31, 2023, the discount rate used to determine the fair value of the Credit Facility was 30-day LIBOR, with a 0.5% floor, plus 2.94% per annum, plus an unused commitment fee of 1.0%. Generally, an increase or decrease in the discount rate used in the DCF calculation may result in a corresponding decrease or increase, respectively, in the fair value of the Credit Facility. As of each of December 31, 2023 and March 31, 2023, the Credit Facility was valued using Level 3 inputs and any changes in its fair value are recorded in Net unrealized appreciation (depreciation) of other on our accompanying Consolidated Statements of Operations.

The following tables provide relevant information and disclosures about the Credit Facility as of December 31, 2023 and March 31, 2023, and for the three and nine months ended December 31, 2023 and 2022, as required by ASC 820:

	Level 3 – Borrowings
	Recurring Fair Value Measurements Reported in Consolidated Statements of Assets and Liabilities Using Significant Unobservable Inputs (Level 3)
	December 31, 2023		March 31, 2023
Credit Facility	$	82,600	$	35,171

Fair Value Measurements of Borrowings Using Significant Unobservable Inputs (Level 3)  Reported in Consolidated Statements of Assets and Liabilities
	Credit Facility
Three Months Ended December 31, 2023:
Fair value at September 30, 2023	$	79,208
Borrowings	104,900
Repayments	(101,600)
Unrealized appreciation	92
Fair value at December 31, 2023	$	82,600
Nine Months Ended December 31, 2023:
Fair value at March 31, 2023	$	35,171
Borrowings	231,900
Repayments	(184,500)
Unrealized appreciation	29
Fair value at December 31, 2023	$	82,600

Fair Value Measurements of Borrowings Using Significant Unobservable Inputs (Level 3) Reported in Consolidated Statements of Assets and Liabilities
	Credit Facility
Three Months Ended December 31, 2022:
Fair value at September 30, 2022	$	16,600
Borrowings	41,400
Repayments	(28,400)
Unrealized appreciation (depreciation)	—
Fair value at December 31, 2022	$	29,600
Nine Months Ended December 31, 2022
Fair value at March 31, 2022	$	—
Borrowings	82,900
Repayments	(53,300)
Unrealized appreciation (depreciation)	—
Fair value at December 31, 2022	$	29,600

The fair value of the collateral under the Credit Facility was $702.9 million and $639.5 million as of December 31, 2023 and March 31, 2023, respectively.

Notes Payable

5.00% Notes due 2026

In March 2021, we completed a public offering of 5.00% Notes due 2026 with an aggregate principal amount of $127.9 million (the “5.00% 2026 Notes”), which resulted in net proceeds of approximately $123.8 million after deducting underwriting discounts, commissions and offering costs borne by us. The 5.00% 2026 Notes are traded under the ticker symbol “GAINN” on the Nasdaq Global Select Market (“Nasdaq”). The 5.00% 2026 Notes will mature on May 1, 2026 and may be redeemed in whole or in part at any time or from time to time at the Company’s option. The 5.00% 2026 Notes bear interest at a rate of 5.00% per year, which is payable quarterly in arrears.

The indenture relating to the 5.00% 2026 Notes contains certain covenants, including (i) an inability to incur additional debt or issue additional debt or preferred securities unless the Company’s asset coverage meets the threshold specified in the 1940 Act after such borrowing, (ii) an inability to declare any dividend or distribution (except a dividend payable in our stock) on a class of our capital stock or to purchase shares of our capital stock unless the Company’s asset coverage meets the threshold specified in the 1940 Act at the time of (and giving effect to) such declaration or purchase, and (iii) if, at any time, we are not subject to the reporting requirements of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), we will provide the holders of the 5.00% 2026 Notes and the trustee with audited annual consolidated financial statements and unaudited interim consolidated financial statements.

The 5.00% 2026 Notes are recorded at the aggregate principal amount, less underwriting discounts, commissions, and offering costs, on our accompanying Consolidated Statements of Assets and Liabilities. Total underwriting discounts, commissions, and offering costs related to this offering were $4.1 million, which have been recorded as discounts to the aggregate principal amount on our accompanying Consolidated Statements of Assets and Liabilities and are being amortized over the period ending May 1, 2026, the maturity date.

4.875% Notes due 2028

In August 2021, we completed a public offering of 4.875% Notes due 2028 with an aggregate principal amount of $134.6 million (the “4.875% 2028 Notes”), which resulted in net proceeds of approximately $131.3 million after deducting underwriting discounts, commissions and offering costs borne by us. The 4.875% 2028 Notes are traded under the ticker symbol “GAINZ” on Nasdaq. The 4.875% 2028 Notes will mature on November 1, 2028 and may be redeemed in whole or in part at any time or from time to time at the Company’s option. The 4.875% 2028 Notes bear interest at a rate of 4.875% per year, which is payable quarterly in arrears.

The indenture relating to the 4.875% 2028 Notes contains certain covenants, including (i) an inability to incur additional debt or issue additional debt or preferred securities unless the Company’s asset coverage meets the threshold specified in the 1940 Act after such borrowing, (ii) an inability to declare any dividend or distribution (except a dividend payable in our stock) on a class of our capital stock or to purchase shares of our capital stock unless the Company’s asset coverage meets the threshold specified in the 1940 Act at the time of (and giving effect to) such declaration or purchase, and (iii) if, at any time, we are not subject to the reporting requirements of the Exchange Act, we will provide the holders of the 4.875% 2028 Notes and the trustee with audited annual consolidated financial statements and unaudited interim consolidated financial statements.

The 4.875% 2028 Notes are recorded at the aggregate principal amount, less underwriting discounts, commissions, and offering costs, on our accompanying Consolidated Statements of Assets and Liabilities. Total underwriting discounts, commissions, and offering costs related to this offering were $3.3 million, which have been recorded as discounts to the aggregate principal amount on our accompanying Consolidated Statements of Assets and Liabilities and are being amortized over the period ending November 1, 2028, the maturity date.

8.00% Notes due 2028

In May 2023, we completed a public offering of 8.00% Notes due 2028 with an aggregate principal amount of $74.8 million (the “8.00% 2028 Notes”), which resulted in net proceeds of approximately $72.3 million after deducting underwriting discounts, commissions and offering costs borne by us. The 8.00% 2028 Notes are traded under the ticker symbol “GAINL” on Nasdaq. The 8.00% 2028 Notes will mature on August 1, 2028 and may be redeemed in whole or in part at any time or from time to time at the Company’s option on or after August 1, 2025. The 8.00% 2028 Notes bear interest at a rate of 8.00% per year, which is payable quarterly in arrears.

The indenture relating to the 8.00% 2028 Notes contains certain covenants, including (i) an inability to incur additional debt or issue additional debt or preferred securities unless the Company’s asset coverage meets the threshold specified in the 1940 Act after such borrowing, (ii) an inability to declare any dividend or distribution (except a dividend payable in our stock) on a class of our capital stock or to purchase shares of our capital stock unless the Company’s asset coverage meets the threshold specified in the 1940 Act at the time of (and giving effect to) such declaration or purchase, and (iii) if, at any time, we are not subject to the reporting requirements of the Exchange Act, we will provide the holders of the 8.00% 2028 Notes and the trustee with audited annual consolidated financial statements and unaudited interim consolidated financial statements.

The 8.00% 2028 Notes are recorded at the aggregate principal amount, less underwriting discounts, commissions, and offering costs, on our accompanying Consolidated Statements of Assets and Liabilities. Total underwriting discounts, commissions, and offering costs related to this offering were $2.5 million, which have been recorded as discounts to the aggregate principal amount on our accompanying Consolidated Statements of Assets and Liabilities and are being amortized over the period ending August 1, 2028, the maturity date.

The following tables summarize our 5.00% 2026 Notes, 4.875% 2028 Notes and 8.00% 2028 Notes as of December 31, 2023 and March 31, 2023:

As of December 31, 2023:
Description	Ticker Symbol	Date Issued	Maturity Date(A)	Interest Rate	Notes Outstanding	Principal Amount per Note		Aggregate Principal Amount
5.00% 2026 Notes	GAINN	March 2, 2021	May 1, 2026	5.00%	5,117,500	$	25.00	$	127,938
4.875% 2028 Notes	GAINZ	August 18, 2021	November 1, 2028	4.875%	5,382,000	$	25.00	134,550
8.00% 2028 Notes	GAINL	May 31, 2023	August 1, 2028	8.00%	2,990,000	$	25.00	74,750
Notes payable, gross(B)					13,489,500			337,238
Less: Unamortized Discounts								(6,334)
Notes payable, net(C)								$	330,904

As of March 31, 2023:
Description	Ticker Symbol	Date Issued	Maturity Date(A)	Interest Rate	Notes Outstanding	Principal Amount per Note		Aggregate Principal Amount
5.00% 2026 Notes	GAINN	March 2, 2021	May 1, 2026	5.00%	5,117,500	$	25.00	$	127,938
4.875% 2028 Notes	GAINZ	August 18, 2021	November 1, 2028	4.875%	5,382,000	$	25.00	134,550
Notes payable, gross(B)					10,499,500			262,488
Less: Unamortized Discounts								(5,052)
Notes payable, net(C)								$	257,436

(A)The 5.00% 2026 Notes and the 4.875% 2028 Notes can be redeemed at our option at any time. The 8.00% 2028 Notes can be redeemed at our option at any time on or after August 1, 2025.

(B)As of December 31, 2023 and March 31, 2023, asset coverage on our senior securities representing indebtedness, calculated pursuant to Sections 18 and 61 of the 1940 Act, was 206.9% and 244.7%, respectively.

(C)Reflected as a line item on our accompanying Consolidated Statements of Assets and Liabilities.

The fair value, based on the last reported closing prices, of the 5.00% 2026 Notes, 4.875% 2028 Notes and 8.00% 2028 Notes as of December 31, 2023 was $122.9 million, $125.9 million, and $76.7 million, respectively. The fair value, based on the last reported closing prices, of the 5.00% 2026 Notes and 4.875% 2028 Notes as of March 31, 2023 was $121.5 million and $127.4 million, respectively. We consider the closing prices of the 5.00% 2026 Notes, 4.875% 2028 Notes and 8.00% 2028 Notes to be Level 1 inputs within the ASC 820 hierarchy.

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REGISTRATION STATEMENT AND COMMON EQUITY OFFERINGS

9 Months Ended

Dec. 31, 2023

Government Assistance [Abstract]

REGISTRATION STATEMENT AND COMMON EQUITY OFFERINGS

REGISTRATION STATEMENT AND COMMON EQUITY OFFERINGS

Registration Statement

On September 3, 2021, we filed a registration statement on Form N-2 (File No. 333-259302), which the SEC declared effective on October 15, 2021. The registration statement permits us to issue, through one or more transactions, up to an aggregate of $300.0 million in securities, consisting of common stock, preferred stock, subscription rights, debt securities, and warrants to purchase common stock, preferred stock, or debt securities, including through concurrent, separate offerings of such securities. As of December 31, 2023, we had the ability to issue up to $194.5 million of the $300.0 million of securities registered under the registration statement.

Common Equity Offering

In August 2022, we entered into equity distribution agreements with Oppenheimer & Co. and Virtu Americas LLC (each a “Sales Agent”), under which we have the ability to issue and sell shares of our common stock, from time to time, through the Sales Agents, having an aggregate offering price of up to $50.0 million in what is commonly referred to as an “at-the-market” program (“Common Stock ATM Program”). In August 2023, we entered into an equity distribution agreement with B. Riley Securities, Inc. and entered into amendments to the agreements with Oppenheimer & Co. Inc. and Virtu Americas LLC in order to add B. Riley Securities, Inc. as a Sales Agent for the Common Stock ATM Program. As of December 31, 2023, we had remaining capacity to sell up to an additional $19.3 million of common stock under the Common Stock ATM program.

During the three months ended December 31, 2023, we sold 1,456,279 shares of our common stock under the Common Stock ATM Program, with a weighted-average gross price of $14.51 per share and a weighted-average net price of $14.28 per share after deducting commissions and offering costs borne by us, raising approximately $21.1 million and $20.8 million of gross and net proceeds, respectively. During the nine months ended December 31, 2023, we sold 1,760,449 shares of common stock under the Common Stock ATM Program, with a weighted-average gross price of $14.34 per share and a weighted-average net price of $14.12 per share after deducting commissions and offering costs borne by us, raising approximately $25.3 million and $24.9 million of gross and net proceeds, respectively. All of these sales were above our then current estimated NAV per share.

During the three months ended December 31, 2022, we sold 212,338 shares of common stock under the Common Stock ATM Program, with a weighted-average gross price of $14.11 per share and a weighted-average net price of $13.91 per share after deducting commissions and offering costs borne by us, raising approximately $3.0 million of gross and net proceeds. During the nine months ended December 31, 2022, we sold 241,978 shares of common stock under the Common Stock ATM Program, with a weighted-average gross price of $14.31 per share and a weighted-average net price of $14.11 per share after deducting commissions and offering costs borne by us, raising approximately $3.5 million and $3.4 million of gross and net proceeds, respectively. All of these sales were above our then current estimated NAV per share.

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NET INCREASE (DECREASE) IN NET ASSETS RESULTING FROM OPERATIONS PER WEIGHTED-AVERAGE COMMON SHARE

9 Months Ended

Dec. 31, 2023

Earnings Per Share [Abstract]

NET INCREASE (DECREASE) IN NET ASSETS RESULTING FROM OPERATIONS PER WEIGHTED-AVERAGE COMMON SHARE

NET INCREASE (DECREASE) IN NET ASSETS RESULTING FROM OPERATIONS PER WEIGHTED-AVERAGE COMMON SHARE

The following table sets forth the computation of basic and diluted Net increase in net assets resulting from operations per weighted-average common share for the three and nine months ended December 31, 2023 and 2022:

	Three Months Ended December 31,				Nine Months Ended December 31,
	2023		2022		2023		2022
Net increase in net assets resulting from operations	$	6,579	$	15,779	$	62,721	$	30,889
Basic and diluted weighted-average common shares	34,351,597		33,316,055		33,921,300		33,246,811
Basic and diluted net increase in net assets resulting from operations per weighted-average common share	$	0.19	$	0.47	$	1.85	$	0.93

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DISTRIBUTIONS TO COMMON STOCKHOLDERS

9 Months Ended

Dec. 31, 2023

Equity [Abstract]

DISTRIBUTIONS TO COMMON STOCKHOLDERS

DISTRIBUTIONS TO COMMON STOCKHOLDERS

To qualify to be taxed as a RIC under Subchapter M of the Code, we must generally distribute to our stockholders, for each taxable year, at least 90% of our taxable ordinary income plus the excess of our net short-term capital gains over net long-term capital losses (“Investment Company Taxable Income”). The amount to be paid out as distributions to our stockholders is determined by our Board of Directors and is based upon management’s estimate of Investment Company Taxable Income and net long-term capital gains, as well as amounts to be distributed in accordance with Section 855(a) of the Code. Based on that estimate, our Board of Directors declares monthly distributions, and supplemental distributions, as appropriate, to stockholders each quarter and deemed distributions of long-term capital gains annually as of the end of the fiscal year, as applicable.

The U.S. federal income tax characteristics of cash distributions paid to our common stockholders generally are reported to stockholders on IRS Form 1099 after the end of each calendar year. Estimates of tax characterization made on a quarterly basis may not be representative of the actual tax characterization of cash distributions for the full year. Estimates made on a quarterly basis are updated as of each interim reporting date. The tax characterization of cash distributions paid to common stockholders during the calendar year ended December 31, 2023 was 53.2% from ordinary income and 46.8% from capital gains.

We paid the following cash distributions to our common stockholders for the nine months ended December 31, 2023 and 2022:

For the Nine Months Ended December 31, 2023:

Declaration Date	Record Date	Payment Date	Distribution per Common Share
April 11, 2023	April 21, 2023	April 28, 2023	$	0.08
April 11, 2023	May 23, 2023	May 31, 2023	0.08
April 11, 2023	June 5, 2023	June 15, 2023	0.12		(A)
April 11, 2023	June 21, 2023	June 30, 2023	0.08
July 11, 2023	July 21, 2023	July 31, 2023	0.08
July 11, 2023	August 23, 2023	August 31, 2023	0.08
July 11, 2023	September 7, 2023	September 15, 2023	0.12		(A)
July 11, 2023	September 21, 2023	September 29, 2023	0.08
October 10, 2023	October 20, 2023	October 31, 2023	0.08
October 10, 2023	November 7, 2023	November 17, 2023	0.12		(A)
October 10, 2023	November 20, 2023	November 30, 2023	0.08
October 24, 2023	December 5, 2023	December 15, 2023	0.88		(A)
October 10, 2023	December 18, 2023	December 29, 2023	0.08
	Nine Months Ended December 31, 2023		$	1.96

For the Nine Months Ended December 31, 2022:

Declaration Date	Record Date	Payment Date	Distribution per Common Share
April 12, 2022	April 22, 2022	April 29, 2022	$	0.075
April 12, 2022	May 20, 2022	May 31, 2022	0.075
April 12, 2022	June 6, 2022	June 15, 2022	0.120		(A)
April 12, 2022	June 22, 2022	June 30, 2022	0.075
July 12, 2022	July 22, 2022	July 29, 2022	0.075
July 12, 2022	August 23, 2022	August 31, 2022	0.075
July 12, 2022	September 22, 2022	September 30, 2022	0.075
October 11, 2022	October 21, 2022	October 31, 2022	0.080
October 11, 2022	November 18, 2022	November 30, 2022	0.080
October 11, 2022	December 6, 2022	December 15, 2022	0.120		(A)
October 11, 2022	December 20, 2022	December 30, 2022	0.080
	Nine Months Ended December 31, 2022		$	0.930

(A)Represents a supplemental distribution to common stockholders.

Aggregate cash distributions to our common stockholders declared and paid were $67.4 million and $30.9 million for the nine months ended December 31, 2023 and 2022, respectively.

For the fiscal year ended March 31, 2023, Investment Company Taxable Income exceeded distributions declared and paid, and, in accordance with Section 855(a) of the Code, we elected to treat $21.4 million of the first distributions paid subsequent to fiscal year-end, as having been paid in the prior year. In addition, for the fiscal year ended March 31, 2023 net capital gains exceeded distributions declared and paid, and, in accordance with Section 855(a) of the Code, we elected to treat $10.6 million of the first distributions paid subsequent to fiscal year-end as having been paid in the prior year.

For the three months ended December 31, 2023, we recorded $0.4 million of net adjustments for estimated permanent book-tax differences to reflect tax character, which decreased Capital in excess of par value and increased Overdistributed net investment income on our accompanying Consolidated Statements of Assets and Liabilities. For the three months ended December 31, 2022, we recorded $0.3 million of net adjustments for estimated permanent book-tax differences to reflect tax character, which decreased Capital in excess of par value and Accumulated net realized gain in excess of distributions and increased Underdistributed net investment income on our accompanying Consolidated Statements of Assets and Liabilities.

For the nine months ended December 31, 2023, we recorded $0.4 million of net adjustments for estimated permanent book-tax differences to reflect tax character, which increased Overdistributed net investment income and decreased Accumulated net realized gain in excess of distributions and Capital in excess of par value on our accompanying Consolidated Statements of Assets and Liabilities. For the nine months ended December 31, 2022, we recorded $1.6 million of net adjustments for estimated permanent book-tax differences to reflect tax character, which decreased Capital in excess of par value and increased Underdistributed net investment income and Accumulated net realized gain in excess of distributions on our accompanying Consolidated Statements of Assets and Liabilities.

We may distribute our net long-term capital gains, if any, in cash or elect to retain some or all of such gains, pay taxes at the U.S. federal corporate-level income tax rate on the amount retained, and designate the retained amount as a “deemed distribution.” If we elect to retain net long-term capital gains and deem them distributed, each U.S. common stockholder will be treated as if they received a distribution of their pro-rata share of the retained net long-term capital gain and the U.S. federal income tax paid. As a result, each U.S. common stockholder will (i) be required to report their pro rata share of the retained gain on their tax return as long-term capital gain, (ii) receive a refundable tax credit for their pro-rata share of federal income tax paid by us on the retained gain, and (iii) increase the tax basis of their shares of common stock by an amount equal to the deemed distribution less the tax credit. For the year ended March 31, 2023, we did not elect to retain long-term capital gains and to treat them as deemed distributions to common stockholders.

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COMMITMENTS AND CONTINGENCIES

9 Months Ended

Dec. 31, 2023

Commitments and Contingencies Disclosure [Abstract]

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES

Legal Proceedings

We are party to certain legal proceedings incidental to the normal course of our business. We are required to establish reserves for litigation matters where those matters present loss contingencies that are both probable and estimable. When loss contingencies are not both probable and estimable, we do not establish reserves. Based on current knowledge, we do not believe that loss contingencies, if any, arising from pending investigations, litigation or regulatory matters will have a material adverse effect on our financial condition, results of operation or cash flows. Additionally, based on our current knowledge, we do not believe such loss contingencies are both probable and estimable and therefore, as of December 31, 2023 and March 31, 2023, we had no established reserves for such loss contingencies.

Escrow Holdbacks

From time to time, we enter into arrangements relating to exits of certain investments whereby specific amounts of the proceeds are held in escrow to be used to satisfy potential obligations, as stipulated in the sales agreements. We record escrow amounts in Restricted cash and cash equivalents, if received in cash but subject to potential obligations or other contractual restrictions, or as escrow receivables in Other assets, net, if not yet received in cash, on our accompanying Consolidated Statements of Assets and Liabilities. We establish reserves and holdbacks against escrow amounts if we determine that it is probable and estimable that a portion of the escrow amounts will not ultimately be released or received at the end of the escrow period. Reserves and holdbacks against escrow amounts were $1.0 million and $85 thousand as of December 31, 2023 and March 31, 2023, respectively.

Financial Commitments and Obligations

We may have line of credit commitments to certain of our portfolio companies that have not been fully drawn. Since these lines of credit commitments have expiration dates and we expect many will never be fully drawn, the total line of credit commitment amounts do not necessarily represent future cash requirements. We estimate the fair value of the combined unused line of credit commitments as of December 31, 2023 and March 31, 2023 to be insignificant.

The following table summarizes the principal balances of unused line of credit as of December 31, 2023 and March 31, 2023, which are not reflected as liabilities in the accompanying Consolidated Statements of Assets and Liabilities:

	December 31, 2023		March 31, 2023
Unused line of credit commitments	$	1,500	$	2,150
Total	$	1,500	$	2,150

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FINANCIAL HIGHLIGHTS

9 Months Ended

Dec. 31, 2023

Investment Company [Abstract]

FINANCIAL HIGHLIGHTS

FINANCIAL HIGHLIGHTS

	Three Months Ended December 31,						Nine Months Ended December 31,
	2023			2022			2023			2022
Per Common Share Data:
Net asset value at beginning of period(A)	$	14.03		$	13.31		$	13.09		$	13.43
Income from investment operations(B)
Net investment income	0.28			0.26			0.49			0.82
Net realized gain	1.27			0.11			1.32			0.32
Net unrealized (depreciation) appreciation	(1.36)			0.10			0.04			(0.21)
Total from investment operations	0.19			0.47			1.85			0.93
Effect of equity capital activity(B)
Cash distributions to common stockholders from net investment income(C)	(0.43)			(0.22)			(0.84)			(0.46)
Cash distributions to common stockholders from net realized gains(C)	(0.81)			(0.14)			(1.12)			(0.47)
Discounts, commissions and offering costs	(0.01)			—			(0.01)			—
Net accretive effective of equity offering(D)	0.05			0.01			0.05			0.01
Total from equity capital activity	(1.20)			(0.35)			(1.92)			(0.92)
Other, net(B)(E)	(0.01)			—			(0.01)			(0.01)
Net asset value at end of period(A)	$	13.01		$	13.43		$	13.01		$	13.43
Per common share market value at beginning of period	$	12.74		$	12.10		$	13.25		$	16.13
Per common share market value at end of period	$	14.15		$	12.91		14.15			12.91
Total investment return(F)	20.85		%	9.63		%	22.72		%	(14.36)		%
Common stock outstanding at end of period(A)	35,351,954			33,447,001			35,351,954			33,447,001
Statement of Assets and Liabilities Data:
Net assets at end of period	$	459,941		$	449,191		$	459,941		$	449,191
Average net assets(G)	$	475,007		$	445,431		455,627			446,742
Senior Securities Data:
Total borrowings, at cost	$	419,838		$	292,088		$	419,838		$	292,088
Ratios/Supplemental Data:
Ratio of net expenses to average net assets – annualized(H)	11.23		%	11.70		%	13.78		%	10.22		%
Ratio of net investment (loss) income to average net assets – annualized(I)	8.21		%	7.70		%	4.80		%	8.14		%

(A)Based on actual shares of common stock outstanding at the beginning or end of the corresponding period, as appropriate.

(B)Based on weighted-average basic common share data for the corresponding period.

(C)The tax character of distributions is determined based on taxable income calculated in accordance with income tax regulations, which may differ from amounts determined under GAAP. For further information on the estimated character of our distributions to common stockholders, including changes in estimates, as applicable, refer to Note 8 — Distributions to Common Stockholders.

(D)During the three and nine months ended December 31, 2023 and 2022, the accretive effect is a result of issuing common shares at a price above the then current NAV per share.

(E)Represents the impact of the different share amounts (weighted-average basic common shares outstanding for the corresponding period and actual common shares outstanding at the end of the period) in the Per Common Share Data calculations and rounding impacts.

(F)Total return equals the change in the market value of our common stock from the beginning of the period, taking into account dividends reinvested in accordance with the terms of our dividend reinvestment plan. Total return does not take into account distributions that may be characterized as a return of capital. For further information on the estimated character of our distributions to common stockholders, including changes in estimates, as applicable, refer to Note 8 — Distributions to Common Stockholders.

(G)Calculated using the average balance of net assets at the end of each month of the reporting period.

(H)Ratio of net expenses to average net assets is computed using total expenses, net of any non-contractual, unconditional, and irrevocable credits of fees from the Adviser. Had we not received any non-contractual, unconditional, and irrevocable credits of fees from the Adviser, the ratio of expenses to average net assets - annualized would have been 14.70% and 14.24% for the three months ended December 31, 2023 and 2022, respectively, and 17.27% and 12.87% for the nine months ended December 31, 2023 and 2022, respectively.

(I)Had we not received any non-contractual, unconditional, and irrevocable credits of fees from the Adviser, the ratio of net investment income (loss) to average net assets - annualized would have been 4.73% and 5.15% for the three months ended December 31, 2023 and 2022, respectively, and 1.32% and 5.50% for the nine months ended December 31, 2023 and 2022, respectively.

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UNCONSOLIDATED SIGNIFICANT SUBSIDIARIES	9 Months Ended
	Dec. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
UNCONSOLIDATED SIGNIFICANT SUBSIDIARIES	UNCONSOLIDATED SIGNIFICANT SUBSIDIARIESIn accordance with the SEC’s Regulation S-X, we do not consolidate portfolio company investments. Further, in accordance with ASC 946, we are precluded from consolidating any entity other than another investment company, except that ASC 946 provides for the consolidation of a controlled operating company that provides substantially all of its services to the investment company or its consolidated subsidiaries. We did not have any unconsolidated subsidiaries that met any of the significance conditions under Rule 1-02(w) of the SEC’s Regulation S-X as of or during the nine months ended December 31, 2023 and 2022.

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SUBSEQUENT EVENTS

9 Months Ended

Dec. 31, 2023

Subsequent Events [Abstract]

SUBSEQUENT EVENTS

SUBSEQUENT EVENTS

Distributions and Dividends

In January 2024, our Board of Directors declared the following monthly distributions to common stockholders:

Record Date	Payment Date	Distribution per Common Share
January 23, 2024	January 31, 2024	$	0.08
February 21, 2024	February 29, 2024	0.08
March 21, 2024	March 29, 2024	0.08
	Total for the Quarter:	$	0.24

ATM Activity

In January 2024, we sold 538,206 shares of our common stock under our Common Stock ATM program at a weighted-average gross price of $14.53 per share and raised approximately $7.7 million in net proceeds. All of these sales were above our then-current estimated NAV per share.

Revolving Line of Credit

On February 5, 2024, we, through our wholly-owned subsidiary, Business Investment, entered into Amendment No. 9 to the Credit Facility with KeyBank, as administrative agent, joint lead arranger and lender, Fifth Third Bank as managing agent, joint lead arranger and lender, the Adviser, as servicer, and certain other lenders party thereto. The Credit Facility was amended to increase the size from $135.0 million to $200.0 million and update certain existing terms. The Credit Facility continues to include customary terms, covenants, events of default and constraints on borrowing availability based on collateral tests for a credit facility of its size and nature.

New Investment Advisory Agreement

On January 4, 2024, we reconvened our Special Meeting of Stockholders (the “Special Meeting”) that was adjourned on December 11, 2023. Our stockholders voted and approved the new investment advisory agreement between us and the Adviser (the "New Advisory Agreement") at the Special Meeting.

The New Advisory Agreement is the result of an anticipated change in control of the Adviser. From inception, the Adviser has been 100% indirectly owned and controlled by David Gladstone. David Gladstone owns 100% of the voting and economic interests of The Gladstone Companies, Ltd., which in turn owns 100% of the voting and economic interests of The Gladstone Companies, Inc., which in turn owns 100% of the voting and economic interests of the Adviser. Immediately after approval by the stockholders of Gladstone Capital Corporation of a similar advisory agreement, which occurred on January 24, 2024, the Adviser entered into a voting trust agreement (the “Voting Trust Agreement”), among David Gladstone, Lorna Gladstone, Laura Gladstone, Kent Gladstone and Jessica Martin, each as a trustee and collectively, as the board of trustees of the voting trust (the “Voting Trust Board”), the Adviser and certain stockholders of the Adviser, pursuant to which David Gladstone deposited all of his indirect interests in the Adviser, which represented 100% of the voting and economic interests thereof, with the voting trust.

Pursuant to the Voting Trust Agreement, prior to its Effective Date (as defined below) David Gladstone has, in his sole discretion, have the full, exclusive and unqualified right and power to vote in person or by proxy all of the shares of common stock of the Adviser deposited with the voting trust at all meetings of the stockholders of the Adviser in respect of any and all matters on which the stockholders of the Adviser are entitled to vote under the Adviser’s certificate of incorporation or applicable law, to give consents in lieu of voting such shares of common stock of the Adviser at a meeting of the stockholders of the Adviser in respect of any and all matters on which stockholders of the Adviser are entitled to vote under its certificate of incorporation or applicable law, to enter into voting agreements, waive notice of any meeting of stockholders of the Adviser in respect of such shares of common stock of the Adviser and to grant proxies with respect to all such shares of common stock of the Adviser with respect to any lawful corporate action (collectively, the “Voting Powers”).

Commencing on the Effective Date, the Voting Trust Board shall have the full, exclusive and unqualified right and power to exercise the Voting Powers. Each member of the Voting Trust Board shall hold 20% of the voting power of the Voting Trust Board as of the Effective Date. The “Effective Date” shall occur on the earliest of (i) the death of David Gladstone, (ii) David Gladstone’s election (in his sole discretion) and (iii) one year from the date the Voting Trust Agreement is entered into. Following entry into the Voting Trust Agreement, the current members of senior management of the Adviser will continue to manage the day-to-day aspects of the Adviser.

There are no changes to the terms of the Advisory Agreement currently in effect (the "Original Advisory Agreement") in the New Advisory Agreement, including the fee structure and services to be provided, other than the date and term of the New Advisory Agreement as compared to the Original Advisory Agreement. In addition to there being no changes to the fee structure, no other fees or expenses currently paid by us will change as a result of entry into the New Advisory Agreement. There will be no changes to our principal investment objective, investment strategies, fundamental investment restrictions or principal risks as a result of entry into the Voting Trust Agreement or New Advisory Agreement.

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Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Pay vs Performance Disclosure
Net increase in net assets resulting from operations	$ 6,579	$ 15,779	$ 62,721	$ 30,889

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Insider Trading Arrangements	3 Months Ended
	Dec. 31, 2023
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

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N-2 - $ / shares

9 Months Ended

Dec. 31, 2023

Sep. 30, 2023

Mar. 31, 2023

Dec. 31, 2022

Sep. 30, 2022

Mar. 31, 2022

Cover [Abstract]

Entity Central Index Key

0001321741

Amendment Flag

false

Securities Act File Number

814-00704

Document Type

10-Q

Entity Registrant Name

GLADSTONE INVESTMENT CORPORATION\DE

Entity Address, Address Line One

1521 WESTBRANCH DRIVE

Entity Address, Address Line Two

SUITE 100

Entity Address, City or Town

MCLEAN

Entity Address, State or Province

VA

Entity Address, Postal Zip Code

22102

City Area Code

703

Local Phone Number

287-5800

Entity Emerging Growth Company

false

Financial Highlights [Abstract]

Senior Securities, Note [Text Block]

As of December 31, 2023, our asset coverage ratio on our senior securities representing indebtedness was 206.9%.

General Description of Registrant [Abstract]

Investment Objectives and Practices [Text Block]

We were established for the purpose of investing in debt and equity securities of established private businesses operating in the United States (“U.S.”). Our investment objectives are to: (i) achieve and grow current income by investing in debt securities of established businesses that we believe will provide stable earnings and cash flow to pay expenses, make principal and interest payments on our outstanding indebtedness, and make distributions to our stockholders that grow over time; and (ii) provide our stockholders with long-term capital appreciation in the value of our assets by investing in equity securities of established businesses, generally in combination with the aforementioned debt securities, that we believe can grow over time to permit us to sell our equity investments for capital gains. To achieve our objectives, our investment strategy is to invest in several categories of debt and equity securities, with individual investments generally totaling up to $75 million, although investment size may vary depending upon our total assets or available capital at the time of investment. We expect that our investment portfolio over time will consist of approximately 75% in debt investments and 25% in equity investments, at cost.

We focus on investing in lower middle market private businesses (which we generally define as companies with annual earnings before interest, taxes, depreciation and amortization (“EBITDA”) of $4 million to $15 million) (“Lower Middle Market”) in the U.S. that meet certain criteria, including: the sustainability of the business’ free cash flow and its ability to grow it over time, adequate assets for loan collateral, experienced management teams with a significant ownership interest in the portfolio company, reasonable capitalization of the portfolio company, including an ample equity contribution or cushion based on prevailing enterprise valuation multiples, and the potential to realize appreciation and gain liquidity in our equity position, if any. We anticipate that liquidity in our equity position will be achieved through a merger or acquisition of the portfolio company, a public offering of the portfolio company’s stock, or, to a lesser extent, by exercising our right to require the portfolio company to repurchase our warrants, though there can be no assurance that we will always have these rights. We invest in portfolio companies that seek funds for management buyouts and/or growth capital to finance acquisitions, recapitalize or, to a lesser extent, refinance their existing debt facilities. We seek to avoid investing in high-risk, early-stage enterprises.

Risk [Text Block]

RISK FACTORS.

Our business is subject to certain risks and events that, if they occur, could adversely affect our financial condition and results of operations and the trading price of our securities. For a discussion of these risks, please refer to the section captioned “Item 1A. Risk Factors” in Part I of our Annual Report on Form 10-K for the fiscal year ended March 31, 2023, as filed with the SEC on May 10, 2023. The risks described in our Annual Report are not the only risks we face. Additional risks and uncertainties not currently known to us or that we currently deem to be immaterial also may materially and adversely affect our business, financial condition and/or operating results.

Share Price

$ 14.15

NAV Per Share

$ 13.01

$ 14.03

$ 13.09

$ 13.43

$ 13.31

$ 13.43

Latest Premium (Discount) to NAV [Percent]

8.80%

Capital Stock, Long-Term Debt, and Other Securities [Abstract]

Long Term Debt [Table Text Block]

Notes Payable

Revolving Line Of Credit [Member]

Capital Stock, Long-Term Debt, and Other Securities [Abstract]

Long Term Debt [Table Text Block]

Revolving Line of Credit

On October 30, 2023, we, through our wholly-owned subsidiary, Business Investment, entered into Amendment No. 8 to the Credit Facility with KeyBank as administrative agent, lead arranger, managing agent and lender, the Adviser, as servicer, and certain other lenders party thereto. Among other things, the revolving period was extended to October 30, 2026, and if not renewed or extended by such date, all principal and interest will be due and payable by October 30, 2028 (two years after the revolving period end date). Advances under the Credit Facility generally bear interest at 30-day Term SOFR, subject to a floor of 0.35%, plus 3.15% per annum until October 30, 2026, with the margin then increasing to 3.40% for the period from October 30, 2026 to October 30, 2027, and increasing further to 3.65% thereafter with a SOFR credit spread adjustment of 10 basis points. The Credit Facility has an unused commitment fee on the daily unused commitment amount of 0.50% per annum if the daily unused commitment amount is less than or equal to 50% of the total commitment amount, 0.75% per annum if the daily unused commitment amount is greater than 50% but less than or equal to 65% of the total commitment amount, and 1.00% per annum if the daily unused commitment amount is greater than 65% of the total commitment amount. The size of the Credit Facility was reduced from $180.0 million to $135.0 million.

Previously, on April 10, 2023, we, through our wholly-owned subsidiary, Business Investment, entered into Amendment No. 7 to the Credit Facility with KeyBank as administrative agent, lead arranger, managing agent and lender, the Adviser, as servicer, and certain other lenders party thereto. The reference rate was updated from LIBOR to Term SOFR plus an 11 basis point credit spread adjustment.

Previously, on March 8, 2021, we, through our wholly-owned subsidiary, Business Investment, entered into Amendment No. 6 to the Credit Facility with KeyBank as administrative agent, lead arranger, managing agent and lender, the Adviser, as servicer, and certain other lenders party thereto. The revolving period was extended to February 29, 2024, and if not renewed or extended by such date, all principal and interest will be due and payable on February 28, 2026 (two years after the revolving period end date).

Long Term Debt, Structuring [Text Block]

Revolving Line of Credit

On October 30, 2023, we, through our wholly-owned subsidiary, Business Investment, entered into Amendment No. 8 to the Credit Facility with KeyBank as administrative agent, lead arranger, managing agent and lender, the Adviser, as servicer, and certain other lenders party thereto. Among other things, the revolving period was extended to October 30, 2026, and if not renewed or extended by such date, all principal and interest will be due and payable by October 30, 2028 (two years after the revolving period end date). Advances under the Credit Facility generally bear interest at 30-day Term SOFR, subject to a floor of 0.35%, plus 3.15% per annum until October 30, 2026, with the margin then increasing to 3.40% for the period from October 30, 2026 to October 30, 2027, and increasing further to 3.65% thereafter with a SOFR credit spread adjustment of 10 basis points. The Credit Facility has an unused commitment fee on the daily unused commitment amount of 0.50% per annum if the daily unused commitment amount is less than or equal to 50% of the total commitment amount, 0.75% per annum if the daily unused commitment amount is greater than 50% but less than or equal to 65% of the total commitment amount, and 1.00% per annum if the daily unused commitment amount is greater than 65% of the total commitment amount. The size of the Credit Facility was reduced from $180.0 million to $135.0 million.

Previously, on April 10, 2023, we, through our wholly-owned subsidiary, Business Investment, entered into Amendment No. 7 to the Credit Facility with KeyBank as administrative agent, lead arranger, managing agent and lender, the Adviser, as servicer, and certain other lenders party thereto. The reference rate was updated from LIBOR to Term SOFR plus an 11 basis point credit spread adjustment.

Previously, on March 8, 2021, we, through our wholly-owned subsidiary, Business Investment, entered into Amendment No. 6 to the Credit Facility with KeyBank as administrative agent, lead arranger, managing agent and lender, the Adviser, as servicer, and certain other lenders party thereto. The revolving period was extended to February 29, 2024, and if not renewed or extended by such date, all principal and interest will be due and payable on February 28, 2026 (two years after the revolving period end date).

5.00% Notes Due 2026 [Member]

Capital Stock, Long-Term Debt, and Other Securities [Abstract]

Long Term Debt [Table Text Block]

5.00% Notes due 2026

In March 2021, we completed a public offering of the 5.00% 2026 Notes with an aggregate principal amount of $127.9 million, which resulted in net proceeds of approximately $123.8 million after deducting underwriting discounts, commissions and offering costs borne by us. The 5.00% 2026 Notes are traded under the ticker symbol “GAINN” on Nasdaq. The 5.00% 2026 Notes will mature on May 1, 2026 and may be redeemed in whole or in part at any time or from time to time at the Company’s option. The 5.00% 2026 Notes bear interest at a rate of 5.00% per year (which equates to $6.4 million per year), payable quarterly in arrears.

The indenture relating to the 5.00% 2026 Notes contains certain covenants, including (i) an inability to incur additional debt or issue additional debt or preferred securities unless the Company’s asset coverage meets the threshold specified in the 1940 Act after such borrowing, (ii) an inability to declare any dividend or distribution (except a dividend payable in our stock) on a class of our capital stock or to purchase shares of our capital stock unless the Company’s asset coverage meets the threshold specified in the 1940 Act at the time of (and giving effect to) such declaration or purchase, and (iii) if, at any time, we are not subject to the reporting requirements of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), we will provide the holders of the 5.00% 2026 Notes and the trustee with audited annual consolidated financial statements and unaudited interim consolidated financial statements.

The 5.00% 2026 Notes are recorded at the aggregate principal amount, less underwriting discounts, commissions, and offering costs, on our accompanying Consolidated Statements of Assets and Liabilities. Total underwriting discounts, commissions, and offering costs related to this offering were $4.1 million, which have been recorded as discounts to the aggregate principal amount on our accompanying Consolidated Statements of Assets and Liabilities and are being amortized over the period ending May 1, 2026, the maturity date.

Long Term Debt, Title [Text Block]

5.00% Notes due 2026

Long Term Debt, Structuring [Text Block]

In March 2021, we completed a public offering of the 5.00% 2026 Notes with an aggregate principal amount of $127.9 million, which resulted in net proceeds of approximately $123.8 million after deducting underwriting discounts, commissions and offering costs borne by us. The 5.00% 2026 Notes are traded under the ticker symbol “GAINN” on Nasdaq. The 5.00% 2026 Notes will mature on May 1, 2026 and may be redeemed in whole or in part at any time or from time to time at the Company’s option. The 5.00% 2026 Notes bear interest at a rate of 5.00% per year (which equates to $6.4 million per year), payable quarterly in arrears.

Long Term Debt, Dividends and Covenants [Text Block]

The indenture relating to the 5.00% 2026 Notes contains certain covenants, including (i) an inability to incur additional debt or issue additional debt or preferred securities unless the Company’s asset coverage meets the threshold specified in the 1940 Act after such borrowing, (ii) an inability to declare any dividend or distribution (except a dividend payable in our stock) on a class of our capital stock or to purchase shares of our capital stock unless the Company’s asset coverage meets the threshold specified in the 1940 Act at the time of (and giving effect to) such declaration or purchase, and (iii) if, at any time, we are not subject to the reporting requirements of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), we will provide the holders of the 5.00% 2026 Notes and the trustee with audited annual consolidated financial statements and unaudited interim consolidated financial statements.

4.875% Notes Due 2028 [Member]

Capital Stock, Long-Term Debt, and Other Securities [Abstract]

Long Term Debt [Table Text Block]

4.875% Notes due 2028

In August 2021, we completed a public offering of the 4.875% 2028 Notes with an aggregate principal amount of $134.6 million, which resulted in net proceeds of approximately $131.3 million after deducting underwriting discounts, commissions and offering costs borne by us. The 4.875% 2028 Notes are traded under the ticker symbol “GAINZ” on Nasdaq. The 4.875% 2028 Notes will mature on November 1, 2028 and may be redeemed in whole or in part at any time or from time to time at the Company’s option. The 4.875% 2028 Notes bear interest at a rate of 4.875% per year (which equates to $6.6 million per year), payable quarterly in arrears.

The indenture relating to the 4.875% 2028 Notes contains certain covenants, including (i) an inability to incur additional debt or issue additional debt or preferred securities unless the Company’s asset coverage meets the threshold specified in the 1940 Act after such borrowing, (ii) an inability to declare any dividend or distribution (except a dividend payable in our stock) on a class of our capital stock or to purchase shares of our capital stock unless the Company’s asset coverage meets the threshold specified in the 1940 Act at the time of (and giving effect to) such declaration or purchase, and (iii) if, at any time, we are not subject to the reporting requirements of the Exchange Act, we will provide the holders of the 4.875% 2028 Notes and the trustee with audited annual consolidated financial statements and unaudited interim consolidated financial statements.

The 4.875% 2028 Notes are recorded at the aggregate principal amount, less underwriting discounts, commissions, and offering costs, on our accompanying Consolidated Statements of Assets and Liabilities. Total underwriting discounts, commissions, and offering costs related to this offering were $3.3 million, which have been recorded as discounts to the aggregate principal amount on our accompanying Consolidated Statements of Assets and Liabilities and are being amortized over the period ending November 1, 2028, the maturity date.

Long Term Debt, Title [Text Block]

4.875% Notes due 2028

Long Term Debt, Structuring [Text Block]

In August 2021, we completed a public offering of the 4.875% 2028 Notes with an aggregate principal amount of $134.6 million, which resulted in net proceeds of approximately $131.3 million after deducting underwriting discounts, commissions and offering costs borne by us. The 4.875% 2028 Notes are traded under the ticker symbol “GAINZ” on Nasdaq. The 4.875% 2028 Notes will mature on November 1, 2028 and may be redeemed in whole or in part at any time or from time to time at the Company’s option. The 4.875% 2028 Notes bear interest at a rate of 4.875% per year (which equates to $6.6 million per year), payable quarterly in arrears.

Long Term Debt, Dividends and Covenants [Text Block]

The indenture relating to the 4.875% 2028 Notes contains certain covenants, including (i) an inability to incur additional debt or issue additional debt or preferred securities unless the Company’s asset coverage meets the threshold specified in the 1940 Act after such borrowing, (ii) an inability to declare any dividend or distribution (except a dividend payable in our stock) on a class of our capital stock or to purchase shares of our capital stock unless the Company’s asset coverage meets the threshold specified in the 1940 Act at the time of (and giving effect to) such declaration or purchase, and (iii) if, at any time, we are not subject to the reporting requirements of the Exchange Act, we will provide the holders of the 4.875% 2028 Notes and the trustee with audited annual consolidated financial statements and unaudited interim consolidated financial statements.

8.00% Notes Due 2028 [Member]

Capital Stock, Long-Term Debt, and Other Securities [Abstract]

Long Term Debt [Table Text Block]

8.00% Notes due 2028

In May 2023, we completed a public offering of the 8.00% 2028 Notes with an aggregate principal amount of $74.8 million, which resulted in net proceeds of approximately $72.3 million after deducting underwriting discounts, commissions and offering costs borne by us. The 8.00% 2028 Notes are traded under the ticker symbol “GAINL” on Nasdaq. The 8.00% 2028 Notes will mature on August 1, 2028 and may be redeemed in whole or in part at any time or from time to time at the Company’s option on or after August 1, 2025. The 8.00% 2028 Notes bear interest at a rate of 8.00% per year (which equates to $6.0 million per year), payable quarterly in arrears.

The indenture relating to the 8.00% 2028 Notes contains certain covenants, including (i) an inability to incur additional debt or issue additional debt or preferred securities unless the Company’s asset coverage meets the threshold specified in the 1940 Act after such borrowing, (ii) an inability to declare any dividend or distribution (except a dividend payable in our stock) on a class of our capital stock or to purchase shares of our capital stock unless the Company’s asset coverage meets the threshold specified in the 1940 Act at the time of (and giving effect to) such declaration or purchase, and (iii) if, at any time, we are not subject to the reporting requirements of the Exchange Act, we will provide the holders of the 8.00% 2028 Notes and the trustee with audited annual consolidated financial statements and unaudited interim consolidated financial statements.

The 8.00% 2028 Notes are recorded at the aggregate principal amount, less underwriting discounts, commissions, and offering costs, on our accompanying Consolidated Statements of Assets and Liabilities. Total underwriting discounts, commissions, and offering costs related to this offering were $2.5 million, which have been recorded as discounts to the aggregate principal amount on our accompanying Consolidated Statements of Assets and Liabilities and are being amortized over the period ending August 1, 2028, the maturity date.

Long Term Debt, Title [Text Block]

8.00% Notes due 2028

Long Term Debt, Structuring [Text Block]

In May 2023, we completed a public offering of the 8.00% 2028 Notes with an aggregate principal amount of $74.8 million, which resulted in net proceeds of approximately $72.3 million after deducting underwriting discounts, commissions and offering costs borne by us. The 8.00% 2028 Notes are traded under the ticker symbol “GAINL” on Nasdaq. The 8.00% 2028 Notes will mature on August 1, 2028 and may be redeemed in whole or in part at any time or from time to time at the Company’s option on or after August 1, 2025. The 8.00% 2028 Notes bear interest at a rate of 8.00% per year (which equates to $6.0 million per year), payable quarterly in arrears.

Long Term Debt, Dividends and Covenants [Text Block]

The indenture relating to the 8.00% 2028 Notes contains certain covenants, including (i) an inability to incur additional debt or issue additional debt or preferred securities unless the Company’s asset coverage meets the threshold specified in the 1940 Act after such borrowing, (ii) an inability to declare any dividend or distribution (except a dividend payable in our stock) on a class of our capital stock or to purchase shares of our capital stock unless the Company’s asset coverage meets the threshold specified in the 1940 Act at the time of (and giving effect to) such declaration or purchase, and (iii) if, at any time, we are not subject to the reporting requirements of the Exchange Act, we will provide the holders of the 8.00% 2028 Notes and the trustee with audited annual consolidated financial statements and unaudited interim consolidated financial statements.

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)

9 Months Ended

Dec. 31, 2023

Accounting Policies [Abstract]

Unaudited Interim Financial Statements and Basis of Presentation

Unaudited Interim Financial Statements and Basis of Presentation

We prepare our interim financial statements in accordance with accounting principles generally accepted in the U.S. (“GAAP”) for interim financial information and pursuant to the requirements for reporting on Form 10-Q and Articles 6, 10 and 12 of SEC Regulation S-X. Accordingly, we have not included in this quarterly report all of the information and notes required by GAAP for annual financial statements. The accompanying Consolidated Financial Statements include our accounts and those of our wholly-owned subsidiaries. All significant intercompany balances and transactions have been eliminated. In accordance with Article 6 of Regulation S-X, we do not consolidate portfolio company investments. Under the investment company rules and regulations pursuant to the American Institute of Certified Public Accountants Audit and Accounting Guide for Investment Companies, codified in ASC 946, we are precluded from consolidating any entity other than another investment company, except that ASC 946 provides for the consolidation of a controlled operating company that provides substantially all of its services to the investment company or its consolidated subsidiaries. In our opinion, all adjustments, consisting solely of normal recurring accruals, necessary for the fair statement of financial statements for the interim periods have been included. The results of operations for the three and nine months ended December 31, 2023 are not necessarily indicative of results that ultimately may be achieved for the fiscal year ending March 31, 2024 or any future interim period. The interim financial statements and notes thereto should be read in conjunction with the financial

statements and notes thereto included in our annual report on Form 10-K for the fiscal year ended March 31, 2023, as filed with the SEC on May 10, 2023.

Use of Estimates

Use of Estimates

Preparing financial statements requires management to make estimates and assumptions that affect the amounts reported in our accompanying Consolidated Financial Statements and these Notes to Consolidated Financial Statements. Actual results may differ from those estimates.

Investment Valuation Policy

Investment Valuation Policy

Accounting Recognition

We record our investments at fair value in accordance with the FASB ASC Topic 820, “Fair Value Measurements and Disclosures” (“ASC 820”) and the 1940 Act. Investment transactions are recorded on the trade date. Realized gains or losses are generally measured by the difference between the net proceeds from the repayment or sale and the cost basis of the investment, without regard to unrealized appreciation or depreciation previously recognized, and include investments charged off during the period, net of recoveries. Unrealized appreciation or depreciation primarily reflects the change in investment fair values, including the reversal of previously recorded unrealized appreciation or depreciation when gains or losses are realized.

Board Responsibility

Our board of directors (the “Board of Directors”) has approved investment valuation policies and procedures pursuant to Rule 2a-5 under the 1940 Act (the “Policy”) and, in July 2022, designated the Adviser to serve as the Board of Directors’ valuation designee ("Valuation Designee") under the 1940 Act.

In accordance with the 1940 Act, our Board of Directors has the ultimate responsibility for reviewing the good faith fair value determination of our investments for which market quotations are not readily available based on our Policy and for overseeing the Valuation Designee. Such review and oversight includes receiving written fair value determinations and supporting materials provided by the Valuation Designee, in coordination with the Administrator and with the oversight by the Company's chief valuation officer (collectively, the “Valuation Team”). The Valuation Committee of our Board of Directors (comprised entirely of independent directors) meets to review the valuation determinations and supporting materials, discusses the information provided by the Valuation Team, determines whether the Valuation Team has followed the Policy, and reviews other facts and circumstances, including current valuation risks, conflicts of interest, material valuation matters, appropriateness of valuation methodologies, back-testing results, price challenges/overrides, and ongoing monitoring and oversight of pricing services. After the Valuation Committee concludes its meeting, it and the chief valuation officer, representing the Valuation Designee, present the Valuation Committee’s findings on the Valuation Designee's determinations to the entire Board of Directors so that the full Board of Directors may review the Valuation Designee's determined fair values of such investments in accordance with the Policy.

There is no single standard for determining fair value (especially for privately-held businesses), as fair value depends upon the specific facts and circumstances of each individual investment. In determining the fair value of our investments, the Valuation Team, led by the chief valuation officer, uses the Policy, and each quarter the Valuation Committee and Board of Directors review the Policy to determine if changes thereto are advisable and whether the Valuation Team has applied the Policy consistently.

Use of Third-Party Valuation Firms

The Valuation Team engages third-party valuation firms to provide independent assessments of fair value of certain of our investments.

A third-party valuation firm generally provides estimates of fair value on our debt investments. The Valuation Team generally assigns the third-party valuation firm’s estimates of fair value to our debt investments where we do not have the ability to effectuate a sale of the applicable portfolio company. The Valuation Team corroborates this third-party valuation firm’s estimates of fair value using one or more of the valuation techniques discussed below. The Valuation Team’s estimate of value on a specific debt investment may significantly differ from the third-party valuation firm’s. When this occurs, our Valuation Committee and Board of Directors review whether the Valuation Team has followed the Policy and

the Valuation Committee reviews whether the Valuation Designee’s determined fair value is reasonable in light of the Policy and other relevant facts and circumstances.

We may engage other independent valuation firms to provide earnings multiple ranges, as well as other information, and evaluate such information for incorporation into the total enterprise value (“TEV”) of certain of our investments. Generally, at least once per year, we engage an independent valuation firm to value or review the valuation of each of our significant equity investments, which includes providing the information noted above. The Valuation Team evaluates such information for incorporation into our TEV, including review of all inputs provided by the independent valuation firm. The Valuation Team then presents a determination to our Valuation Committee as to the fair value. Our Valuation Committee reviews the determined fair value and whether it is reasonable in light of the Policy and other relevant facts and circumstances.

Valuation Techniques

In accordance with ASC 820, the Valuation Team uses the following techniques when valuing our investment portfolio:

•Total Enterprise Value — In determining the fair value using a TEV, the Valuation Team first calculates the TEV of the portfolio company by incorporating some or all of the following factors: the portfolio company’s ability to make payments and other specific portfolio company attributes; the earnings of the portfolio company (the trailing or projected twelve month revenue or earnings before interest, taxes, depreciation and amortization (“EBITDA”)); EBITDA multiples obtained from our indexing methodology whereby the original transaction EBITDA multiple at the time of our closing is indexed to a general subset of comparable disclosed transactions and EBITDA multiples from recent sales to third parties of similar securities in similar industries; a comparison to publicly traded securities in similar industries; and other pertinent factors. The Valuation Team generally reviews industry statistics and may use outside experts when gathering this information. Once the TEV is determined for a portfolio company, the Valuation Team generally allocates the TEV to the portfolio company’s securities based on the facts and circumstances of the securities, which typically results in the allocation of fair value to securities based on the order of their relative priority in the capital structure. Generally, the Valuation Team uses TEV to value our equity investments and, in the circumstances where we have the ability to effectuate a sale of a portfolio company, our debt investments.

TEV is primarily calculated using EBITDA and EBITDA multiples; however, TEV may also be calculated using revenue and revenue multiples or a discounted cash flow (“DCF”) analysis whereby future expected cash flows of the portfolio company are discounted to determine a net present value using estimated risk-adjusted discount rates, which incorporate adjustments for nonperformance and liquidity risks.

•Yield Analysis — The Valuation Team generally determines the fair value of our debt investments for which we do not have the ability to effectuate a sale of the applicable portfolio company using the yield analysis, which includes a DCF calculation and assumptions that the Valuation Team believes market participants would use, including: estimated remaining life, current market yield, current leverage, and interest rate spreads. This technique develops a modified discount rate that incorporates risk premiums including, among other things, increased probability of default, increased loss upon default, and increased liquidity risk. Generally, the Valuation Team uses the yield analysis to corroborate both estimates of value provided by a third-party valuation firm and market quotes.

•Market Quotes — For our investments for which a limited market exists, we generally base fair value on readily available and reliable market quotations, which are corroborated by the Valuation Team (generally by using the yield analysis described above). In addition, the Valuation Team assesses trading activity for similar investments and evaluates variances in quotations and other market insights to determine if any available quoted prices are reliable. Typically, the Valuation Team uses the lower indicative bid price in the bid-to-ask price range obtained from the respective originating syndication agent’s trading desk on or near the valuation date. The Valuation Team may take further steps to consider additional information to validate that price in accordance with the Policy. For securities that are publicly traded, we generally base fair value on the closing market price of the securities we hold as of the reporting date. For restricted securities that are publicly traded, we generally base fair value on the closing market price of the securities we hold as of the reporting date less a discount for the restriction, which includes consideration of the nature and term to expiration of the restriction and the lack of marketability of the security.

•Investments in Funds — For equity investments in other funds for which we cannot effectuate a sale of the fund, the Valuation Team generally determines the fair value of our invested capital at the net asset value (“NAV”) provided by the fund. Any invested capital that is not yet reflected in the NAV provided by the fund is valued at par value. The Valuation Team may also determine fair value of our investments in other investment funds based on the capital accounts of the underlying entity.

In addition to the valuation techniques listed above, the Valuation Team may also consider other factors when determining the fair value of our investments, including: the nature and realizable value of the collateral, including external parties’ guaranties, any relevant offers or letters of intent to acquire the portfolio company, timing of expected loan repayments, and the markets in which the portfolio company operates.

Fair value measurements of our investments may involve subjective judgments and estimates and, due to the uncertainty inherent in valuing these securities, the determinations of fair value may fluctuate from period to period and may differ materially from the values that could be obtained if a ready market for these securities existed. Our NAV could be materially affected if the determinations regarding the fair value of our investments are materially different from the values that we ultimately realize upon our disposal of such securities. Additionally, changes in the market environment and other events that may occur over the life of the investment may cause the gains or losses ultimately realized on these investments to be different than the valuations currently assigned. Further, such investments are generally subject to legal and other restrictions on resale or otherwise are less liquid than publicly traded securities. If we were required to liquidate a portfolio investment in a forced or liquidation sale, we could realize significantly less than the value at which it is recorded.

Revenue Recognition

Revenue Recognition

Interest Income Recognition

Interest income, adjusted for amortization of premiums, amendment fees and acquisition costs and the accretion of discounts, is recorded on the accrual basis to the extent that such amounts are expected to be collected. Generally, when a loan becomes 90 days or more past due, or if our qualitative assessment indicates that the debtor is unable to service its debt or other obligations, we will place the loan on non-accrual status and cease recognizing interest income on that loan until the borrower has demonstrated the ability and intent to pay contractual amounts due. However, we remain contractually entitled to this interest. Interest payments received on non-accrual loans may be recognized as income or applied to the cost basis, depending upon management’s judgment. Generally, non-accrual loans are restored to accrual status when past-due principal and interest are paid and, in management’s judgment, are likely to remain current, or, due to a restructuring, the interest income is deemed to be collectible. As of December 31, 2023, our loans to Edge Adhesives Holdings, Inc. ("Edge"), J.R. Hobbs Co. – Atlanta, LLC (“J.R. Hobbs”) and The Mountain Corporation (“The Mountain”) were on non-accrual status, with an aggregate debt cost basis of $66.9 million, or 10.0% of the cost basis of all debt investments in our portfolio, and an aggregate fair value of $30.9 million, or 5.0% of the fair value of all debt investments in our portfolio. As of March 31, 2023, our loans to Edge, J.R. Hobbs, and The Mountain were on non-accrual status, with an aggregate debt cost basis of $66.9 million, or 12.0% of the cost basis of all debt investments in our portfolio, and an aggregate fair value of $31.7 million, or 6.2% of the fair value of all debt investments in our portfolio.

Paid-in-kind (“PIK”) interest, computed at the contractual rate specified in the loan agreement, is added to the principal balance of the loan and recorded as interest income. As of December 31, 2023 and March 31, 2023, we did not have any loans with a PIK interest component.

Success Fee Income Recognition

We record success fees as income when earned, which often occurs upon receipt of cash. Success fees are generally contractually due upon a change of control in a portfolio company, typically resulting from an exit or sale, and are non-recurring.

Dividend Income Recognition

We accrue dividend income on preferred and common equity securities to the extent that such amounts are expected to be collected and if we have the option to collect such amounts in cash or other consideration.

Related Party Fees

Related Party Fees

We are party to the Advisory Agreement with the Adviser, which is indirectly owned and controlled by our chairman and chief executive officer. In accordance with the Advisory Agreement, we pay the Adviser fees as compensation for its services, consisting of a base management fee and an incentive fee. Additionally, we pay the Adviser a loan servicing fee as compensation for its services as servicer under the terms of the Fifth Amended and Restated Credit Agreement dated April 30, 2013, as amended from time to time (the "Credit Facility").

We are also party to the Administration Agreement with the Administrator, which is indirectly owned and controlled by our chairman and chief executive officer, whereby we pay separately for administrative services.

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INVESTMENTS (Tables)

9 Months Ended

Dec. 31, 2023

Investments, Debt and Equity Securities [Abstract]

Schedule of Fair Value, Assets Measured on Recurring Basis

As of December 31, 2023 and March 31, 2023, our investments, by security type, at fair value were categorized as follows within the ASC 820 fair value hierarchy:

			Fair Value Measurements
	Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
As of December 31, 2023:
Secured first lien debt	$	476,126	$	—	$	—		$	476,126
Secured second lien debt	137,480		—		—			137,480
Preferred equity	214,664		—		—			214,664
Common equity/equivalents	74,538		—		22		(A)	74,516
Total Investments as of December 31, 2023	$	902,808	$	—	$	22		$	902,786

			Fair Value Measurements
	Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
As of March 31, 2023:
Secured first lien debt	$	437,517	$	—	$	—		$	437,517
Secured second lien debt	75,734		—		—			75,734
Preferred equity	222,585		—		—			222,585
Common equity/equivalents	17,707		—		27		(A)	17,680
Total Investments as of March 31, 2023	$	753,543	$	—	$	27		$	753,516

(A)Fair value was determined based on the closing market price of shares of Funko, Inc. (our units in Funko can be converted into common shares of Funko, Inc.) at the reporting date less a discount for lack of marketability, as our investment was subject to certain restrictions.

The following table presents our investments, valued using Level 3 inputs within the ASC 820 fair value hierarchy, and carried at fair value as of December 31, 2023 and March 31, 2023, by caption on our accompanying Consolidated Statements of Assets and Liabilities, and by security type:

	Total Recurring Fair Value Measurements Reported in Consolidated Statements of Assets and Liabilities Valued Using Level 3 Inputs
	December 31, 2023		March 31, 2023
Non-Control/Non-Affiliate Investments
Secured first lien debt	$	324,528	$	279,748
Secured second lien debt	93,340		50,842
Preferred equity	164,241		164,534
Common equity/equivalents(A)	38,207		1,724
Total Non-Control/Non-Affiliate Investments	620,316		496,848
Affiliate Investments
Secured first lien debt	147,354		157,769
Secured second lien debt	44,140		24,892
Preferred equity	50,423		58,051
Common equity/equivalents	36,309		15,243
Total Affiliate Investments	278,226		255,955
Control Investments
Secured first lien debt	4,244		—
Secured second lien debt	—		—
Preferred equity	—		—
Common equity/equivalents	—		713
Total Control Investments	4,244		713
Total investments at fair value using Level 3 inputs	$	902,786	$	753,516

(A)Excludes our investment in Funko with a fair value of $22 thousand and $27 thousand as of December 31, 2023 and March 31, 2023, respectively, which was valued using Level 2 inputs.

Schedule of Fair Value Measurement Inputs and Valuation Techniques

The table below is not intended to be all-inclusive, but rather provides information on the significant Level 3 inputs as they relate to our fair value measurements. The weighted-average calculations in the table below are based on the principal balances for all debt-related calculations and on the cost basis for all equity-related calculations for the particular input.

	Quantitative Information about Level 3 Fair Value Measurements
	Fair Value as of				Valuation Technique/ Methodology	Unobservable Input	Range / Weighted-Average as of
	December 31, 2023		March 31, 2023				December 31, 2023	March 31, 2023
Secured first lien debt	$	476,126	$	432,126	TEV	EBITDA multiple	4.0x – 9.0x / 6.5x	4.4x – 7.7x / 6.4x
						EBITDA	$1,100–$22,168 / $10,884	$4,251 – $19,083 / $10,764
						Revenue multiple	0.3x – 0.6x / 0.4x	0.3x – 0.6x / 0.3x
						Revenue	$15,332 – $98,136 / $73,695	$15,483 – $109,615 / $94,957
	—		5,391		Yield Analysis	Discount Rate	N/A	19.4% – 19.9% / 19.7%
Secured second lien debt	112,595		62,750		TEV	EBITDA multiple	5.1x – 10.9x /  6.5x	5.4x – 6.6x / 6.2x
						EBITDA	$5,839 – $8,771 / $7,706	$4,112 – $6,379 / $5,501
	24,885		12,984		Yield Analysis	Discount Rate	14.0% – 14.0% / 14.0%	14.0% – 14.0% / 14.0%
Preferred equity	214,664		222,585		TEV	EBITDA multiple	4.0x – 9.0x / 6.1x	4.4x – 7.7x / 5.9x
						EBITDA	$3,135 – $22,168 / $9,974	$4,251 – $19,083 / $9,486
						Revenue multiple	0.3x – 0.6x / 0.4x	0.3x – 0.6x / 0.4x
						Revenue	$15,332 – $98,136 / $56,766	$15,483 – $109,615 / $69,247
Common equity/ equivalents(A)	74,516		17,680		TEV	EBITDA multiple	5.0x – 10.9x / 6.0x	4.7x – 7.2x / 6.4x
						EBITDA	$1,100 – $60,199 / $14,476	$1,105 – $30,833 / $6,273
Total	$	902,786	$	753,516

(A)Fair value as of both December 31, 2023 and March 31, 2023 excludes our investment in Funko with a fair value of $22 thousand and $27 thousand, respectively, which was valued using Level 2 inputs.

Schedule of Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation

The following tables provide our portfolio’s changes in fair value, broken out by security type, during the three and nine months ended December 31, 2023 and 2022 for all investments for which the Adviser determines fair value using unobservable (Level 3) inputs.

Fair Value Measurements Using Significant Unobservable Inputs (Level 3)

	Secured First Lien Debt		Secured Second Lien Debt		Preferred Equity		Common Equity/ Equivalents		Total
Three Months ended December 31, 2023:
Fair value as of September 30, 2023	$	508,504	$	102,747	$	267,596	$	36,767	$	915,614
Total gain (loss):
Net realized gain (loss)(A)	—		—		43,459		—		43,459
Net unrealized appreciation (depreciation)(B)	(7,040)		(4,267)		4,911		3,428		(2,968)
Reversal of previously recorded (appreciation) depreciation upon realization(B)	(1,338)		—		(42,228)		—		(43,566)
New investments, repayments and settlements(C):
Issuances / originations	3,500		39,000		—		25,700		68,200
Settlements / repayments	(27,500)		—		—		—		(27,500)
Sales	—		—		(50,453)		—		(50,453)
Transfers(E)	—		—		(8,621)		8,621		—
Fair value as of December 31, 2023	$	476,126	$	137,480	$	214,664	$	74,516	$	902,786

	Secured First Lien Debt		Secured Second Lien Debt		Preferred Equity		Common Equity/ Equivalents		Total
Nine Months Ended December 31, 2023
Fair value as of March 31, 2023	$	437,517	$	75,734	$	222,585	$	17,680	$	753,516
Total gain (loss):
Net realized gain (loss)(A)	—		—		43,732		882		44,614
Net unrealized appreciation (depreciation)(B)	(6,153)		(2,254)		35,234		18,228		45,055
Reversal of previously recorded (appreciation) depreciation upon realization(B)	(1,338)		—		(42,228)		(93)		(43,659)
New investments, repayments and settlements(C):
Issuances / originations	73,600		64,000		14,688		30,700		182,988
Settlements / repayments	(27,500)		—		—		—		(27,500)
Sales(D)	—		—		(50,726)		(1,502)		(52,228)
Transfers(E)	—		—		(8,621)		8,621		—
Fair value as of December 31, 2023	$	476,126	$	137,480	$	214,664	$	74,516	$	902,786

	Secured First Lien Debt		Secured Second Lien Debt		Preferred Equity		Common Equity/ Equivalents		Total
Three Months ended December 31, 2022:
Fair value as of September 30, 2022	$	420,907	$	76,751	$	229,430	$	10,789	$	737,877
Total gain (loss):
Net realized gain (loss)(A)	—		(10,000)		13,372		—		3,372
Net unrealized appreciation (depreciation)(B)	(2,516)		(266)		(7,656)		3,829		(6,609)
Reversal of previously recorded (appreciation) depreciation upon realization(B)	—		10,001		—		—		10,001
New investments, repayments and settlements(C):
Issuances / originations	29,900		1,183		—		380		31,463
Settlements / repayments	(800)		(1,500)		—		—		(2,300)
Sales(D)	—		—		(13,372)		—		(13,372)
Transfers	—		—		—		—		—
Fair value as of December 31, 2022	$	447,491	$	76,169	$	221,774	$	14,998	$	760,432

	Secured First Lien Debt		Secured Second Lien Debt		Preferred Equity		Common Equity/ Equivalents		Total
Nine Months Ended December 31, 2022:
Fair value as of March 31, 2022	$	425,087	$	67,958	$	217,599	$	3,678	$	714,322
Total gain (loss):
Net realized gain (loss)(A)	—		(10,000)		20,318		—		10,318
Net unrealized appreciation (depreciation)(B)	(21,328)		(4,800)		10,405		10,940		(4,783)
Reversal of previously recorded (appreciation) depreciation upon realization(B)	—		10,001		(12,250)		—		(2,249)
New investments, repayments and settlements(C):
Issuances / originations	106,950		5,188		21,000		380		133,518
Settlements / repayments	(48,800)		(6,596)		—		—		(55,396)
Sales(D)	—		—		(35,298)		—		(35,298)
Transfers(E)	(14,418)		14,418		—		—		—
Fair value as of December 31, 2022	$	447,491	$	76,169	$	221,774	$	14,998	$	760,432

Included in net realized gain (loss) on investments on our accompanying Consolidated Statements of Operations for the respective periods ended December 31, 2023 and 2022.

(B)Included in net unrealized appreciation (depreciation) of investments on our accompanying Consolidated Statements of Operations for the respective periods ended December 31, 2023 and 2022.

(C)Includes increases in the cost basis of investments resulting from new portfolio investments, the amortization of discounts and other non-cash disbursements to portfolio companies, as well as decreases in the cost basis of investments resulting from principal repayments or sales, the amortization of premiums and acquisition costs, and other cost-basis adjustments.

(D)The nine months ended December 31, 2023 includes $0.3 million of proceeds from the recapitalization of Old World Christmas, Inc. ("Old World"). The three and nine months ended December 31, 2022 include $13.4 million of proceeds from the recapitalization of Old World. The nine months ended December 31, 2022 also includes $12.3 million return of equity cost basis from Horizon Facilities Services, Inc.

(E)2023: Transfers represent preferred equity of SFEG Holdings, Inc. ("SFEG") with a total cost basis and fair value of $4.8 million and $8.6 million, respectively, which was converted to common equity in October 2023.

2022: Transfers represent (1) secured second lien debt of Ginsey Home Solutions, Inc. with a total cost basis and fair value of $12.2 million, which was converted into secured first lien debt in August 2022 and (2) secured first lien debt of PSI Molded Plastics, Inc. with a total cost basis and fair value of $26.6 million, which was converted into secured second lien debt in September 2022.

Schedule of Investment Holdings

The following table summarizes our investments by security type as of December 31, 2023 and March 31, 2023:

	December 31, 2023								March 31, 2023
	Cost				Fair Value				Cost				Fair Value
Secured first lien debt	$	517,539	59.6	%	$	476,126	52.7	%	$	471,439	65.4	%	$	437,517	58.1	%
Secured second lien debt	148,158		17.0	%	137,480		15.2	%	84,158		11.7	%	75,734		10.1	%
Total debt	665,697		76.6	%	613,606		67.9	%	555,597		77.1	%	513,251		68.2	%
Preferred equity	151,969		17.5	%	214,664		23.8	%	149,099		20.7	%	222,585		29.5	%
Common equity/equivalents	50,838		5.9	%	74,538		8.3	%	15,934		2.2	%	17,707		2.3	%
Total equity/equivalents	202,807		23.4	%	289,202		32.1	%	165,033		22.9	%	240,292		31.8	%
Total investments	$	868,504	100.0	%	$	902,808	100.0	%	$	720,630	100.0	%	$	753,543	100.0	%

Investments at fair value consisted of the following industry classifications as of December 31, 2023 and March 31, 2023:

	December 31, 2023				March 31, 2023
	Fair Value		Percentage of Total Investments		Fair Value		Percentage of Total Investments
Diversified/Conglomerate Services	$	255,141	28.3	%	$	268,954	35.7	%
Home and Office Furnishings, Housewares, and Durable Consumer Products	155,897		17.3	%	143,685		19.1	%
Machinery (Non-Agriculture, Non-Construction, and Non-Electronic)	92,293		10.2	%	20,088		2.7	%
Hotels, Motels, Inns, and Gaming	80,557		8.9	%	58,713		7.8	%
Buildings and Real Estate	64,352		7.1	%	60,571		8.0	%
Healthcare, Education, and Childcare	50,237		5.6	%	37,445		5.0	%
Oil and Gas	45,983		5.1	%	—		—	%
Leisure, Amusement, Motion Pictures, and Entertainment	38,356		4.2	%	47,616		6.3	%
Mining, Steel, Iron and Non-Precious Metals	27,831		3.1	%	25,998		3.5	%
Aerospace and Defense	25,754		2.9	%	22,215		2.8	%
Chemicals, Plastics, and Rubber	19,256		2.1	%	24,891		3.3	%
Printing and Publishing	15,210		1.7	%	—		—	%
Cargo Transport	13,500		1.5	%	14,707		2.0	%
Telecommunications	8,881		1.0	%	18,987		2.5	%
Other < 2.0%	9,560		1.0	%	9,673		1.3	%
Total investments	$	902,808	100.0	%	$	753,543	100.0	%

Investments at fair value were included in the following geographic regions of the U.S. as of December 31, 2023 and March 31, 2023:

	December 31, 2023				March 31, 2023
Location	Fair Value		Percentage of Total Investments		Fair Value		Percentage of Total Investments
South	$	326,849	36.2	%	$	171,056	22.7	%
West	228,407		25.3	%	197,989		26.3	%
Northeast	213,403		23.6	%	266,612		35.4	%
Midwest	134,149		14.9	%	117,886		15.6	%
Total investments	$	902,808	100.0	%	$	753,543	100.0	%

Schedule of Investments Classified by Contractual Maturity Date

The following table summarizes the contractual principal repayment and maturity of our investment portfolio by fiscal year, assuming no voluntary prepayments, as of December 31, 2023:

		Amount
For the remaining three months ending March 31, 2024		$	33,918
For the fiscal years ending March 31:
	2025	100,470
	2026	204,919
	2027	162,746
	2028	38,250
	Thereafter	125,394
	Total contractual repayments	$	665,697
	Investments in equity securities	202,807
	Total cost basis of investments held as of December 31, 2023:	$	868,504

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RELATED PARTY TRANSACTIONS (Tables)

9 Months Ended

Dec. 31, 2023

Related Party Transactions [Abstract]

Schedule of Related Party Transactions

The following table summarizes the base management fees, loan servicing fees, incentive fees, and associated non-contractual, unconditional, and irrevocable credits reflected in our accompanying Consolidated Statements of Operations:

	Three Months Ended December 31,						Nine Months Ended December 31,
	2023			2022			2023			2022
Average total assets subject to base management fee(A)	$	920,400		$	757,800		$	858,267		$	731,000
Multiplied by prorated annual base management fee of 2.0%	0.5		%	0.5		%	1.5		%	1.5		%
Base management fee(B)	4,602			3,789			12,874			10,965
Credits to fees from Adviser - other(B)	(1,793)			(756)			(5,117)			(3,131)
Net base management fee	$	2,809		$	3,033		$	7,757		$	7,834
Loan servicing fee(B)	2,332			2,080			6,829			5,754
Credits to base management fee - loan servicing fee(B)	(2,332)			(2,080)			(6,829)			(5,754)
Net loan servicing fee	$	—		$	—		$	—		$	—
Incentive fee – income-based	$	2,282		$	2,503		$	6,142		$	7,016
Incentive fee – capital gains-based(C)	(615)			1,442			9,259			706
Total incentive fee(B)	$	1,667		$	3,945		$	15,401		$	7,722
Credits to fees from Adviser - other(B)	—			—			—			—
Net total incentive fee	$	1,667		$	3,945		$	15,401		$	7,722

(A)Average total assets subject to the base management fee is defined in the Advisory Agreement as total assets, including investments made with proceeds of borrowings, less any uninvested cash or cash equivalents resulting from borrowings, valued at the end of the applicable quarters within the respective periods and adjusted appropriately for any share issuances or repurchases during the periods.

(B)Reflected as a line item on our accompanying Consolidated Statements of Operations.

(C)The capital gains-based incentive fees are recorded in accordance with GAAP and do not necessarily reflect amounts contractually due under the terms of the Advisory Agreement.

Amounts due to related parties on our accompanying Consolidated Statements of Assets and Liabilities were as follows:

	As of December 31,		As of March 31,
	2023		2023
Base management and loan servicing fee due to Adviser, net of credits	$	1,006	$	1,574
Incentive fee due to Adviser(A)	36,640		27,259
Other due to Adviser	47		86
Total fees due to Adviser	37,693		28,919
Fee due to Administrator	575		716
Total related party fees due	$	38,268	$	29,635

(A)Includes a capital gains-based incentive fee of $34.4 million and $25.1 million as of December 31, 2023 and March 31, 2023, respectively, recorded in accordance with GAAP requirements, and which was not contractually due under the terms of the Advisory Agreement. Refer to Note 4 — Related Party Transactions — Transactions with the Adviser — Incentive Fee for additional information, including capital gains-based incentive fee payments made.

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BORROWINGS (Tables)

9 Months Ended

Dec. 31, 2023

Debt Disclosure [Abstract]

Schedule of Line of Credit Facilities

The following tables summarize noteworthy information related to the Credit Facility:

	As of December 31, 2023		As of March 31, 2023
Commitment amount	$	135,000	$	180,000
Borrowings outstanding at cost	$	82,600	$	35,200
Availability(A)	$	52,400	$	144,800

	For the Three Months Ended December 31,						For the Nine Months Ended December 31,
	2023			2022			2023			2022
Weighted-average borrowings outstanding	$	77,359		$	26,054		$	57,135		$	12,621
Effective interest rate(B)	9.2		%	12.8		%	10.2		%	19.8		%
Commitment (unused) fees incurred	$	113		$	394		$	777		$	1,279

(A)Availability is subject to various constraints, characteristics and applicable advance rates based on collateral quality under the Credit Facility, which equated to an adjusted availability of $52.4 million and $144.8 million as of December 31, 2023 and March 31, 2023, respectively.

(B)Excludes the impact of deferred financing costs and includes unused commitment fees.

Schedule of Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation

The following tables provide relevant information and disclosures about the Credit Facility as of December 31, 2023 and March 31, 2023, and for the three and nine months ended December 31, 2023 and 2022, as required by ASC 820:

	Level 3 – Borrowings
	Recurring Fair Value Measurements Reported in Consolidated Statements of Assets and Liabilities Using Significant Unobservable Inputs (Level 3)
	December 31, 2023		March 31, 2023
Credit Facility	$	82,600	$	35,171

Fair Value Measurements of Borrowings Using Significant Unobservable Inputs (Level 3)  Reported in Consolidated Statements of Assets and Liabilities
	Credit Facility
Three Months Ended December 31, 2023:
Fair value at September 30, 2023	$	79,208
Borrowings	104,900
Repayments	(101,600)
Unrealized appreciation	92
Fair value at December 31, 2023	$	82,600
Nine Months Ended December 31, 2023:
Fair value at March 31, 2023	$	35,171
Borrowings	231,900
Repayments	(184,500)
Unrealized appreciation	29
Fair value at December 31, 2023	$	82,600

Fair Value Measurements of Borrowings Using Significant Unobservable Inputs (Level 3) Reported in Consolidated Statements of Assets and Liabilities
	Credit Facility
Three Months Ended December 31, 2022:
Fair value at September 30, 2022	$	16,600
Borrowings	41,400
Repayments	(28,400)
Unrealized appreciation (depreciation)	—
Fair value at December 31, 2022	$	29,600
Nine Months Ended December 31, 2022
Fair value at March 31, 2022	$	—
Borrowings	82,900
Repayments	(53,300)
Unrealized appreciation (depreciation)	—
Fair value at December 31, 2022	$	29,600

Schedule of Debt

The following tables summarize our 5.00% 2026 Notes, 4.875% 2028 Notes and 8.00% 2028 Notes as of December 31, 2023 and March 31, 2023:

As of December 31, 2023:
Description	Ticker Symbol	Date Issued	Maturity Date(A)	Interest Rate	Notes Outstanding	Principal Amount per Note		Aggregate Principal Amount
5.00% 2026 Notes	GAINN	March 2, 2021	May 1, 2026	5.00%	5,117,500	$	25.00	$	127,938
4.875% 2028 Notes	GAINZ	August 18, 2021	November 1, 2028	4.875%	5,382,000	$	25.00	134,550
8.00% 2028 Notes	GAINL	May 31, 2023	August 1, 2028	8.00%	2,990,000	$	25.00	74,750
Notes payable, gross(B)					13,489,500			337,238
Less: Unamortized Discounts								(6,334)
Notes payable, net(C)								$	330,904

As of March 31, 2023:
Description	Ticker Symbol	Date Issued	Maturity Date(A)	Interest Rate	Notes Outstanding	Principal Amount per Note		Aggregate Principal Amount
5.00% 2026 Notes	GAINN	March 2, 2021	May 1, 2026	5.00%	5,117,500	$	25.00	$	127,938
4.875% 2028 Notes	GAINZ	August 18, 2021	November 1, 2028	4.875%	5,382,000	$	25.00	134,550
Notes payable, gross(B)					10,499,500			262,488
Less: Unamortized Discounts								(5,052)
Notes payable, net(C)								$	257,436

(A)The 5.00% 2026 Notes and the 4.875% 2028 Notes can be redeemed at our option at any time. The 8.00% 2028 Notes can be redeemed at our option at any time on or after August 1, 2025.

(B)As of December 31, 2023 and March 31, 2023, asset coverage on our senior securities representing indebtedness, calculated pursuant to Sections 18 and 61 of the 1940 Act, was 206.9% and 244.7%, respectively.

(C)Reflected as a line item on our accompanying Consolidated Statements of Assets and Liabilities.

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NET INCREASE (DECREASE) IN NET ASSETS RESULTING FROM OPERATIONS PER WEIGHTED-AVERAGE COMMON SHARE (Tables)

9 Months Ended

Dec. 31, 2023

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

The following table sets forth the computation of basic and diluted Net increase in net assets resulting from operations per weighted-average common share for the three and nine months ended December 31, 2023 and 2022:

	Three Months Ended December 31,				Nine Months Ended December 31,
	2023		2022		2023		2022
Net increase in net assets resulting from operations	$	6,579	$	15,779	$	62,721	$	30,889
Basic and diluted weighted-average common shares	34,351,597		33,316,055		33,921,300		33,246,811
Basic and diluted net increase in net assets resulting from operations per weighted-average common share	$	0.19	$	0.47	$	1.85	$	0.93

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DISTRIBUTIONS TO COMMON STOCKHOLDERS (Tables)

9 Months Ended

Dec. 31, 2023

Equity [Abstract]

Schedule of Investment Company, Cash Distributions to Common Stockholders

We paid the following cash distributions to our common stockholders for the nine months ended December 31, 2023 and 2022:

For the Nine Months Ended December 31, 2023:

Declaration Date	Record Date	Payment Date	Distribution per Common Share
April 11, 2023	April 21, 2023	April 28, 2023	$	0.08
April 11, 2023	May 23, 2023	May 31, 2023	0.08
April 11, 2023	June 5, 2023	June 15, 2023	0.12		(A)
April 11, 2023	June 21, 2023	June 30, 2023	0.08
July 11, 2023	July 21, 2023	July 31, 2023	0.08
July 11, 2023	August 23, 2023	August 31, 2023	0.08
July 11, 2023	September 7, 2023	September 15, 2023	0.12		(A)
July 11, 2023	September 21, 2023	September 29, 2023	0.08
October 10, 2023	October 20, 2023	October 31, 2023	0.08
October 10, 2023	November 7, 2023	November 17, 2023	0.12		(A)
October 10, 2023	November 20, 2023	November 30, 2023	0.08
October 24, 2023	December 5, 2023	December 15, 2023	0.88		(A)
October 10, 2023	December 18, 2023	December 29, 2023	0.08
	Nine Months Ended December 31, 2023		$	1.96

For the Nine Months Ended December 31, 2022:

Declaration Date	Record Date	Payment Date	Distribution per Common Share
April 12, 2022	April 22, 2022	April 29, 2022	$	0.075
April 12, 2022	May 20, 2022	May 31, 2022	0.075
April 12, 2022	June 6, 2022	June 15, 2022	0.120		(A)
April 12, 2022	June 22, 2022	June 30, 2022	0.075
July 12, 2022	July 22, 2022	July 29, 2022	0.075
July 12, 2022	August 23, 2022	August 31, 2022	0.075
July 12, 2022	September 22, 2022	September 30, 2022	0.075
October 11, 2022	October 21, 2022	October 31, 2022	0.080
October 11, 2022	November 18, 2022	November 30, 2022	0.080
October 11, 2022	December 6, 2022	December 15, 2022	0.120		(A)
October 11, 2022	December 20, 2022	December 30, 2022	0.080
	Nine Months Ended December 31, 2022		$	0.930

(A)Represents a supplemental distribution to common stockholders.

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COMMITMENTS AND CONTINGENCIES (Tables)

9 Months Ended

Dec. 31, 2023

Commitments and Contingencies Disclosure [Abstract]

Summary of Principal Balances of Unused Line of Credit and Delayed Draw Term Debt Commitments and Guaranties

The following table summarizes the principal balances of unused line of credit as of December 31, 2023 and March 31, 2023, which are not reflected as liabilities in the accompanying Consolidated Statements of Assets and Liabilities:

	December 31, 2023		March 31, 2023
Unused line of credit commitments	$	1,500	$	2,150
Total	$	1,500	$	2,150

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FINANCIAL HIGHLIGHTS (Tables)

9 Months Ended

Dec. 31, 2023

Investment Company [Abstract]

Schedule of Investment Company, Financial Highlights

	Three Months Ended December 31,						Nine Months Ended December 31,
	2023			2022			2023			2022
Per Common Share Data:
Net asset value at beginning of period(A)	$	14.03		$	13.31		$	13.09		$	13.43
Income from investment operations(B)
Net investment income	0.28			0.26			0.49			0.82
Net realized gain	1.27			0.11			1.32			0.32
Net unrealized (depreciation) appreciation	(1.36)			0.10			0.04			(0.21)
Total from investment operations	0.19			0.47			1.85			0.93
Effect of equity capital activity(B)
Cash distributions to common stockholders from net investment income(C)	(0.43)			(0.22)			(0.84)			(0.46)
Cash distributions to common stockholders from net realized gains(C)	(0.81)			(0.14)			(1.12)			(0.47)
Discounts, commissions and offering costs	(0.01)			—			(0.01)			—
Net accretive effective of equity offering(D)	0.05			0.01			0.05			0.01
Total from equity capital activity	(1.20)			(0.35)			(1.92)			(0.92)
Other, net(B)(E)	(0.01)			—			(0.01)			(0.01)
Net asset value at end of period(A)	$	13.01		$	13.43		$	13.01		$	13.43
Per common share market value at beginning of period	$	12.74		$	12.10		$	13.25		$	16.13
Per common share market value at end of period	$	14.15		$	12.91		14.15			12.91
Total investment return(F)	20.85		%	9.63		%	22.72		%	(14.36)		%
Common stock outstanding at end of period(A)	35,351,954			33,447,001			35,351,954			33,447,001
Statement of Assets and Liabilities Data:
Net assets at end of period	$	459,941		$	449,191		$	459,941		$	449,191
Average net assets(G)	$	475,007		$	445,431		455,627			446,742
Senior Securities Data:
Total borrowings, at cost	$	419,838		$	292,088		$	419,838		$	292,088
Ratios/Supplemental Data:
Ratio of net expenses to average net assets – annualized(H)	11.23		%	11.70		%	13.78		%	10.22		%
Ratio of net investment (loss) income to average net assets – annualized(I)	8.21		%	7.70		%	4.80		%	8.14		%

(A)Based on actual shares of common stock outstanding at the beginning or end of the corresponding period, as appropriate.

(B)Based on weighted-average basic common share data for the corresponding period.

(C)The tax character of distributions is determined based on taxable income calculated in accordance with income tax regulations, which may differ from amounts determined under GAAP. For further information on the estimated character of our distributions to common stockholders, including changes in estimates, as applicable, refer to Note 8 — Distributions to Common Stockholders.

(D)During the three and nine months ended December 31, 2023 and 2022, the accretive effect is a result of issuing common shares at a price above the then current NAV per share.

(E)Represents the impact of the different share amounts (weighted-average basic common shares outstanding for the corresponding period and actual common shares outstanding at the end of the period) in the Per Common Share Data calculations and rounding impacts.

(F)Total return equals the change in the market value of our common stock from the beginning of the period, taking into account dividends reinvested in accordance with the terms of our dividend reinvestment plan. Total return does not take into account distributions that may be characterized as a return of capital. For further information on the estimated character of our distributions to common stockholders, including changes in estimates, as applicable, refer to Note 8 — Distributions to Common Stockholders.

(G)Calculated using the average balance of net assets at the end of each month of the reporting period.

(H)Ratio of net expenses to average net assets is computed using total expenses, net of any non-contractual, unconditional, and irrevocable credits of fees from the Adviser. Had we not received any non-contractual, unconditional, and irrevocable credits of fees from the Adviser, the ratio of expenses to average net assets - annualized would have been 14.70% and 14.24% for the three months ended December 31, 2023 and 2022, respectively, and 17.27% and 12.87% for the nine months ended December 31, 2023 and 2022, respectively.

(I)Had we not received any non-contractual, unconditional, and irrevocable credits of fees from the Adviser, the ratio of net investment income (loss) to average net assets - annualized would have been 4.73% and 5.15% for the three months ended December 31, 2023 and 2022, respectively, and 1.32% and 5.50% for the nine months ended December 31, 2023 and 2022, respectively.

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SUBSEQUENT EVENTS (Tables)

9 Months Ended

Dec. 31, 2023

Subsequent Events [Abstract]

Schedule of Distributions to Common Stockholders

In January 2024, our Board of Directors declared the following monthly distributions to common stockholders:

Record Date	Payment Date	Distribution per Common Share
January 23, 2024	January 31, 2024	$	0.08
February 21, 2024	February 29, 2024	0.08
March 21, 2024	March 29, 2024	0.08
	Total for the Quarter:	$	0.24

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ORGANIZATION (Details)	Dec. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Investment portfolio, debt investments, intended percent	75.00%
Investment portfolio, equity investments, intended percent	25.00%
Investment portfolio, debt investments, actual percent	76.60%
Investment portfolio, equity investments, actual percent	23.40%

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Mar. 31, 2023
Summary of Investment Holdings [Line Items]
Cost	$ 868,504	$ 720,630	[1]
Fair Value	902,808	753,543	[1]
J.R. Hobbs Co. and The Mountain Corporation
Summary of Investment Holdings [Line Items]
Cost	$ 66,900
Cost percentage	10.00%
Fair Value	$ 30,900
Fair value percentage	5.00%
J.R. Hobbs, The Mountain and SFEG Holdings, Inc.
Summary of Investment Holdings [Line Items]
Cost		$ 66,900
Cost percentage		12.00%
Fair Value		$ 31,700
Fair value percentage		6.20%

[1] Cumulative gross unrealized appreciation for federal income tax purposes is $150.4 million; cumulative gross unrealized depreciation for federal income tax purposes is $119.3 million. Cumulative net unrealized appreciation is $31.1 million, based on a tax cost of $722.4 million.

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INVESTMENTS - Fair Value, Assets Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Mar. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at fair value	$ 902,808	$ 753,543
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at fair value	0	0
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at fair value	22	27
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at fair value	902,786	753,516
Significant Unobservable Inputs (Level 3) | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at fair value	902,786	753,516
Significant Unobservable Inputs (Level 3) | Non-Control/Non-Affiliate Investments | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at fair value	620,316	496,848
Significant Unobservable Inputs (Level 3) | Affiliate Investments | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at fair value	278,226	255,955
Significant Unobservable Inputs (Level 3) | Control Investments | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at fair value	4,244	713
Secured first lien debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at fair value	476,126	437,517
Secured first lien debt | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at fair value	0	0
Secured first lien debt | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at fair value	0	0
Secured first lien debt | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at fair value	476,126	437,517
Secured first lien debt | Significant Unobservable Inputs (Level 3) | Non-Control/Non-Affiliate Investments | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at fair value	324,528	279,748
Secured first lien debt | Significant Unobservable Inputs (Level 3) | Affiliate Investments | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at fair value	147,354	157,769
Secured first lien debt | Significant Unobservable Inputs (Level 3) | Control Investments | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at fair value	4,244	0
Secured second lien debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at fair value	137,480	75,734
Secured second lien debt | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at fair value	0	0
Secured second lien debt | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at fair value	0	0
Secured second lien debt | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at fair value	137,480	75,734
Secured second lien debt | Significant Unobservable Inputs (Level 3) | Non-Control/Non-Affiliate Investments | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at fair value	93,340	50,842
Secured second lien debt | Significant Unobservable Inputs (Level 3) | Affiliate Investments | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at fair value	44,140	24,892
Secured second lien debt | Significant Unobservable Inputs (Level 3) | Control Investments | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at fair value	0	0
Preferred equity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at fair value	214,664	222,585
Preferred equity | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at fair value	0	0
Preferred equity | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at fair value	0	0
Preferred equity | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at fair value	214,664	222,585
Preferred equity | Significant Unobservable Inputs (Level 3) | Non-Control/Non-Affiliate Investments | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at fair value	164,241	164,534
Preferred equity | Significant Unobservable Inputs (Level 3) | Affiliate Investments | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at fair value	50,423	58,051
Preferred equity | Significant Unobservable Inputs (Level 3) | Control Investments | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at fair value	0	0
Common equity/equivalents
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at fair value	74,538	17,707
Common equity/equivalents | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at fair value	0	0
Common equity/equivalents | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at fair value	22	27
Common equity/equivalents | Significant Other Observable Inputs (Level 2) | Funko Acquisition Holdings, LLC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at fair value	22	27
Common equity/equivalents | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at fair value	74,516	17,680
Common equity/equivalents | Significant Unobservable Inputs (Level 3) | Non-Control/Non-Affiliate Investments | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at fair value	38,207	1,724
Common equity/equivalents | Significant Unobservable Inputs (Level 3) | Affiliate Investments | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at fair value	36,309	15,243
Common equity/equivalents | Significant Unobservable Inputs (Level 3) | Control Investments | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at fair value	$ 0	$ 713

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INVESTMENTS - Fair Value Measurement Inputs and Valuation Techniques (Details) $ in Thousands	Dec. 31, 2023 USD ($)	Mar. 31, 2023 USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 902,808	$ 753,543	[1]
Investments at fair value	902,808	753,543
Secured First Lien Debt
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments at fair value	476,126	437,517
Secured Second Lien Debt
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments at fair value	137,480	75,734
Preferred Equity
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments at fair value	214,664	222,585
Common Equity/ Equivalents
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments at fair value	74,538	17,707
Significant Unobservable Inputs (Level 3)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	902,786	753,516
Investments at fair value	902,786	753,516
Significant Unobservable Inputs (Level 3) | Secured First Lien Debt
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments at fair value	476,126	437,517
Significant Unobservable Inputs (Level 3) | Secured Second Lien Debt
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments at fair value	137,480	75,734
Significant Unobservable Inputs (Level 3) | Preferred Equity
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments at fair value	214,664	222,585
Significant Unobservable Inputs (Level 3) | Common Equity/ Equivalents
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments at fair value	74,516	17,680
Significant Unobservable Inputs (Level 3) | Total Enterprise Value | Secured First Lien Debt
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	476,126	432,126
Significant Unobservable Inputs (Level 3) | Total Enterprise Value | Secured Second Lien Debt
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	112,595	62,750
Significant Unobservable Inputs (Level 3) | Total Enterprise Value | Preferred Equity
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	214,664	222,585
Significant Unobservable Inputs (Level 3) | Total Enterprise Value | Common Equity/ Equivalents
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 74,516	$ 17,680
Significant Unobservable Inputs (Level 3) | Total Enterprise Value | EBITDA multiple | Secured First Lien Debt | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value, measurement input	4.0	4.4
Significant Unobservable Inputs (Level 3) | Total Enterprise Value | EBITDA multiple | Secured First Lien Debt | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value, measurement input	9.0	7.7
Significant Unobservable Inputs (Level 3) | Total Enterprise Value | EBITDA multiple | Secured First Lien Debt | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value, measurement input	6.5	6.4
Significant Unobservable Inputs (Level 3) | Total Enterprise Value | EBITDA multiple | Secured Second Lien Debt | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value, measurement input	5.1	5.4
Significant Unobservable Inputs (Level 3) | Total Enterprise Value | EBITDA multiple | Secured Second Lien Debt | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value, measurement input	10.9	6.6
Significant Unobservable Inputs (Level 3) | Total Enterprise Value | EBITDA multiple | Secured Second Lien Debt | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value, measurement input	6.5	6.2
Significant Unobservable Inputs (Level 3) | Total Enterprise Value | EBITDA multiple | Preferred Equity | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value, measurement input	4.0	4.4
Significant Unobservable Inputs (Level 3) | Total Enterprise Value | EBITDA multiple | Preferred Equity | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value, measurement input	9.0	7.7
Significant Unobservable Inputs (Level 3) | Total Enterprise Value | EBITDA multiple | Preferred Equity | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value, measurement input	6.1	5.9
Significant Unobservable Inputs (Level 3) | Total Enterprise Value | EBITDA multiple | Common Equity/ Equivalents | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value, measurement input	5.0	4.7
Significant Unobservable Inputs (Level 3) | Total Enterprise Value | EBITDA multiple | Common Equity/ Equivalents | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value, measurement input	10.9	7.2
Significant Unobservable Inputs (Level 3) | Total Enterprise Value | EBITDA multiple | Common Equity/ Equivalents | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value, measurement input	6.0	6.4
Significant Unobservable Inputs (Level 3) | Total Enterprise Value | EBITDA | Secured First Lien Debt | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 1,100	$ 4,251
Significant Unobservable Inputs (Level 3) | Total Enterprise Value | EBITDA | Secured First Lien Debt | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	22,168	19,083
Significant Unobservable Inputs (Level 3) | Total Enterprise Value | EBITDA | Secured First Lien Debt | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	10,884	10,764
Significant Unobservable Inputs (Level 3) | Total Enterprise Value | EBITDA | Secured Second Lien Debt | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	5,839	4,112
Significant Unobservable Inputs (Level 3) | Total Enterprise Value | EBITDA | Secured Second Lien Debt | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	8,771	6,379
Significant Unobservable Inputs (Level 3) | Total Enterprise Value | EBITDA | Secured Second Lien Debt | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	7,706	5,501
Significant Unobservable Inputs (Level 3) | Total Enterprise Value | EBITDA | Preferred Equity | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	3,135	4,251
Significant Unobservable Inputs (Level 3) | Total Enterprise Value | EBITDA | Preferred Equity | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	22,168	19,083
Significant Unobservable Inputs (Level 3) | Total Enterprise Value | EBITDA | Preferred Equity | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	9,974	9,486
Significant Unobservable Inputs (Level 3) | Total Enterprise Value | EBITDA | Common Equity/ Equivalents | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	1,100	1,105
Significant Unobservable Inputs (Level 3) | Total Enterprise Value | EBITDA | Common Equity/ Equivalents | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	60,199	30,833
Significant Unobservable Inputs (Level 3) | Total Enterprise Value | EBITDA | Common Equity/ Equivalents | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 14,476	$ 6,273
Significant Unobservable Inputs (Level 3) | Total Enterprise Value | Revenue multiple | Secured First Lien Debt | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value, measurement input	0.3	0.3
Significant Unobservable Inputs (Level 3) | Total Enterprise Value | Revenue multiple | Secured First Lien Debt | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value, measurement input	0.6	0.6
Significant Unobservable Inputs (Level 3) | Total Enterprise Value | Revenue multiple | Secured First Lien Debt | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value, measurement input	0.4	0.3
Significant Unobservable Inputs (Level 3) | Total Enterprise Value | Revenue multiple | Preferred Equity | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value, measurement input	0.3	0.3
Significant Unobservable Inputs (Level 3) | Total Enterprise Value | Revenue multiple | Preferred Equity | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value, measurement input	0.6	0.6
Significant Unobservable Inputs (Level 3) | Total Enterprise Value | Revenue multiple | Preferred Equity | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value, measurement input	0.4	0.4
Significant Unobservable Inputs (Level 3) | Total Enterprise Value | Revenue | Secured First Lien Debt | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 15,332	$ 15,483
Significant Unobservable Inputs (Level 3) | Total Enterprise Value | Revenue | Secured First Lien Debt | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	98,136	109,615
Significant Unobservable Inputs (Level 3) | Total Enterprise Value | Revenue | Secured First Lien Debt | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	73,695	94,957
Significant Unobservable Inputs (Level 3) | Total Enterprise Value | Revenue | Preferred Equity | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	15,332	15,483
Significant Unobservable Inputs (Level 3) | Total Enterprise Value | Revenue | Preferred Equity | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	98,136	109,615
Significant Unobservable Inputs (Level 3) | Total Enterprise Value | Revenue | Preferred Equity | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	56,766	69,247
Significant Unobservable Inputs (Level 3) | Yield Analysis | Secured First Lien Debt
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	0	5,391
Significant Unobservable Inputs (Level 3) | Yield Analysis | Secured Second Lien Debt
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 24,885	$ 12,984
Significant Unobservable Inputs (Level 3) | Yield Analysis | Discount Rate | Secured First Lien Debt | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value, measurement input		0.194
Significant Unobservable Inputs (Level 3) | Yield Analysis | Discount Rate | Secured First Lien Debt | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value, measurement input		0.199
Significant Unobservable Inputs (Level 3) | Yield Analysis | Discount Rate | Secured First Lien Debt | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value, measurement input		0.197
Significant Unobservable Inputs (Level 3) | Yield Analysis | Discount Rate | Secured Second Lien Debt | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value, measurement input	0.140	0.140
Significant Unobservable Inputs (Level 3) | Yield Analysis | Discount Rate | Secured Second Lien Debt | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value, measurement input	0.140	0.140
Significant Unobservable Inputs (Level 3) | Yield Analysis | Discount Rate | Secured Second Lien Debt | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value, measurement input	0.140	0.140
Significant Other Observable Inputs (Level 2)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments at fair value	$ 22	$ 27
Significant Other Observable Inputs (Level 2) | Secured First Lien Debt
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments at fair value	0	0
Significant Other Observable Inputs (Level 2) | Secured Second Lien Debt
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments at fair value	0	0
Significant Other Observable Inputs (Level 2) | Preferred Equity
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments at fair value	0	0
Significant Other Observable Inputs (Level 2) | Common Equity/ Equivalents
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments at fair value	22	27
Significant Other Observable Inputs (Level 2) | Common Equity/ Equivalents | Funko Acquisition Holdings, LLC
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments at fair value	$ 22	$ 27

[1] Cumulative gross unrealized appreciation for federal income tax purposes is $150.4 million; cumulative gross unrealized depreciation for federal income tax purposes is $119.3 million. Cumulative net unrealized appreciation is $31.1 million, based on a tax cost of $722.4 million.

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INVESTMENTS - Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended			6 Months Ended	9 Months Ended
	Jun. 30, 2023	Dec. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Sep. 30, 2022	Dec. 31, 2023	Dec. 31, 2022	Sep. 30, 2023	Mar. 31, 2023		Aug. 31, 2022	Mar. 31, 2022
New investments, repayments and settlements:
Cost		$ 868,504				$ 868,504			$ 720,630	[1]
Fair Value		902,808				902,808			753,543	[1]
Old World Christmas, Inc.
New investments, repayments and settlements:
Realized gain (loss) on preferred equity	$ 300			$ 13,400	$ 13,400	300
Horizon Facilities Services, Inc.
New investments, repayments and settlements:
Realized gain (loss) on preferred equity				(12,300)	(12,300)
Ginsey Home Solutions, Inc.
New investments, repayments and settlements:
Cost											$ 12,200
Fair Value											$ 12,200
PSI Molded Plastics, Inc
New investments, repayments and settlements:
Cost				26,600	26,600
Fair Value				26,600	26,600
Total
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance		902,786	$ 760,432	737,877	737,877	902,786	$ 760,432	$ 915,614	753,516			$ 714,322
New investments, repayments and settlements:
Issuances / originations		68,200	31,463			182,988	133,518
Settlements / repayments		(27,500)	(2,300)			(27,500)	(55,396)
Sales		(50,453)	(13,372)			(52,228)	(35,298)
Transfers		0	0			0	0
Ending balance		902,786	760,432	737,877	737,877	902,786	760,432
Total | Debt and Equity Securities, Realized Gain (Loss)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Total gain (loss)		43,459	3,372			44,614	10,318
Total | Debt and Equity Securities, Unrealized Gain (Loss)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Total gain (loss)		(2,968)	(6,609)			45,055	(4,783)
Reversal of previously recorded (appreciation) depreciation upon realization		(43,566)	10,001			(43,659)	(2,249)
Secured First Lien Debt
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance		476,126	447,491	420,907	420,907	476,126	447,491	508,504	437,517			425,087
New investments, repayments and settlements:
Issuances / originations		3,500	29,900			73,600	106,950
Settlements / repayments		(27,500)	(800)			(27,500)	(48,800)
Sales		0	0			0	0
Transfers		0	0			0	(14,418)
Ending balance		476,126	447,491	420,907	420,907	476,126	447,491
Secured First Lien Debt | Debt and Equity Securities, Realized Gain (Loss)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Total gain (loss)		0	0			0	0
Secured First Lien Debt | Debt and Equity Securities, Unrealized Gain (Loss)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Total gain (loss)		(7,040)	(2,516)			(6,153)	(21,328)
Reversal of previously recorded (appreciation) depreciation upon realization		(1,338)	0			(1,338)	0
Secured Second Lien Debt
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance		137,480	76,169	76,751	76,751	137,480	76,169	102,747	75,734			67,958
New investments, repayments and settlements:
Issuances / originations		39,000	1,183			64,000	5,188
Settlements / repayments		0	(1,500)			0	(6,596)
Sales		0	0			0	0
Transfers		0	0			0	14,418
Ending balance		137,480	76,169	76,751	76,751	137,480	76,169
Secured Second Lien Debt | Debt and Equity Securities, Realized Gain (Loss)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Total gain (loss)		0	(10,000)			0	(10,000)
Secured Second Lien Debt | Debt and Equity Securities, Unrealized Gain (Loss)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Total gain (loss)		(4,267)	(266)			(2,254)	(4,800)
Reversal of previously recorded (appreciation) depreciation upon realization		0	10,001			0	10,001
Preferred Equity
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance		214,664	221,774	229,430	229,430	214,664	221,774	267,596	222,585			217,599
New investments, repayments and settlements:
Issuances / originations		0	0			14,688	21,000
Settlements / repayments		0	0			0	0
Sales		(50,453)	(13,372)			(50,726)	(35,298)
Transfers		(8,621)	0			(8,621)	0
Ending balance		214,664	221,774	229,430	229,430	214,664	221,774
Preferred Equity | Debt and Equity Securities, Realized Gain (Loss)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Total gain (loss)		43,459	13,372			43,732	20,318
Preferred Equity | Debt and Equity Securities, Unrealized Gain (Loss)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Total gain (loss)		4,911	(7,656)			35,234	10,405
Reversal of previously recorded (appreciation) depreciation upon realization		(42,228)	0			(42,228)	(12,250)
Common Equity/ Equivalents
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance		74,516	14,998	10,789	10,789	74,516	14,998	$ 36,767	$ 17,680			$ 3,678
New investments, repayments and settlements:
Issuances / originations		25,700	380			30,700	380
Settlements / repayments		0	0			0	0
Sales		0	0			(1,502)	0
Transfers		8,621	0			8,621	0
Ending balance		74,516	14,998	$ 10,789	$ 10,789	74,516	14,998
Common Equity/ Equivalents | Debt and Equity Securities, Realized Gain (Loss)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Total gain (loss)		0	0			882	0
Common Equity/ Equivalents | Debt and Equity Securities, Unrealized Gain (Loss)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Total gain (loss)		3,428	3,829			18,228	10,940
Reversal of previously recorded (appreciation) depreciation upon realization		$ 0	$ 0			$ (93)	$ 0

[1] Cumulative gross unrealized appreciation for federal income tax purposes is $150.4 million; cumulative gross unrealized depreciation for federal income tax purposes is $119.3 million. Cumulative net unrealized appreciation is $31.1 million, based on a tax cost of $722.4 million.

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INVESTMENTS - Narrative (Details) $ in Thousands	1 Months Ended					3 Months Ended			6 Months Ended	9 Months Ended
	Oct. 31, 2023 USD ($)	Sep. 30, 2023 USD ($)	Aug. 31, 2023 USD ($)	Jun. 30, 2023 USD ($)	May 31, 2023 USD ($)	Dec. 31, 2023 USD ($) portfolioCompany industry state	Dec. 31, 2022 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2022 USD ($)	Dec. 31, 2023 USD ($) portfolioCompany industry state	Dec. 31, 2022 USD ($)	Mar. 31, 2023 USD ($)
Summary of Investment Holdings [Line Items]
Purchase of investments										$ 182,988	$ 133,506
Dividend income						$ 0	$ 4,466			1,907	10,847
Cost						868,504				868,504		$ 720,630	[1]
Success fee income						$ 1,382	$ 1,061			1,382	7,794
Principal repayments of investments										$ 27,500	$ 50,300
Number of investment portfolio company | portfolioCompany						25				25
Number of states which have invested in the company location | state						18				18
Number of industries that have made investments | industry						16				16
Fair Value						$ 902,808				$ 902,808		753,543	[1]
Uncollectible receivables allowance, minimum required day for uncollectible adjustment										90 days
Gross receivables from portfolio companies						2,300				$ 2,300		2,200
Allowance for uncollectible receivables						1,600				1,600
Five Largest Portfolio Investments | Investment Portfolio Benchmark | Customer Concentration Risk
Summary of Investment Holdings [Line Items]
Fair Value						380,900				$ 380,900
Concentration risk, percentage										42.20%
Secured First Lien Debt
Summary of Investment Holdings [Line Items]
Cost						517,539				$ 517,539		471,439
Fair Value						476,126				476,126		437,517
Preferred Equity
Summary of Investment Holdings [Line Items]
Cost						151,969				151,969		149,099
Fair Value						214,664				214,664		222,585
Secured Second Lien Debt
Summary of Investment Holdings [Line Items]
Cost						148,158				148,158		84,158
Fair Value						137,480				137,480		75,734
Common Equity/ Equivalents
Summary of Investment Holdings [Line Items]
Cost						50,838				50,838		15,934
Fair Value						$ 74,538				74,538		$ 17,707
Home Concepts Acquisition, Inc
Summary of Investment Holdings [Line Items]
Purchase of investments					$ 15,300
Home Concepts Acquisition, Inc | Secured First Lien Debt
Summary of Investment Holdings [Line Items]
Purchase of investments					12,000
Home Concepts Acquisition, Inc | Preferred Equity
Summary of Investment Holdings [Line Items]
Purchase of investments					$ 3,300
Old World Christmas, Inc.
Summary of Investment Holdings [Line Items]
Purchase of investments				$ 2,500
Proceeds from equity				2,200
Dividend income				1,900
Realized gain on preferred equity				300				$ 13,400	$ 13,400	$ 300
Nth Degree Investment Group, LLC
Summary of Investment Holdings [Line Items]
Purchase of investments				30,000
Nth Degree Investment Group, LLC | Secured Second Lien Debt
Summary of Investment Holdings [Line Items]
Purchase of investments				25,000
Nth Degree Investment Group, LLC | Common Equity/ Equivalents
Summary of Investment Holdings [Line Items]
Purchase of investments				5,000
Specialty Knives & Tools, LLC
Summary of Investment Holdings [Line Items]
Realized gain on preferred equity				900
Net proceeds from the sale of investments				1,500
Cost				$ 600
Nocturne Villa Rentals, Inc.
Summary of Investment Holdings [Line Items]
Purchase of investments			$ 18,700
The E3 Company, LLC
Summary of Investment Holdings [Line Items]
Purchase of investments		$ 46,000
The E3 Company, LLC | Secured First Lien Debt
Summary of Investment Holdings [Line Items]
Purchase of investments		34,800
The E3 Company, LLC | Preferred Equity
Summary of Investment Holdings [Line Items]
Purchase of investments		$ 11,200
SFEG Holdings, Inc
Summary of Investment Holdings [Line Items]
Purchase of investments	$ 64,700
Cost	4,800
Fair Value	8,600
SFEG Holdings, Inc | Secured Second Lien Debt
Summary of Investment Holdings [Line Items]
Purchase of investments	39,000
SFEG Holdings, Inc | Common Equity/ Equivalents
Summary of Investment Holdings [Line Items]
Purchase of investments	25,700
Counsel Press, Inc.,
Summary of Investment Holdings [Line Items]
Realized gain on preferred equity	43,500
Success fee income	1,400
Principal repayments of investments	$ 27,500

[1] Cumulative gross unrealized appreciation for federal income tax purposes is $150.4 million; cumulative gross unrealized depreciation for federal income tax purposes is $119.3 million. Cumulative net unrealized appreciation is $31.1 million, based on a tax cost of $722.4 million.

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INVESTMENTS - Investment Holdings (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Dec. 31, 2023	Mar. 31, 2023
Summary of Investment Holdings [Line Items]
Cost	$ 868,504	$ 720,630	[1]
Fair Value	902,808	753,543	[1]
South
Summary of Investment Holdings [Line Items]
Fair Value	326,849	171,056
West
Summary of Investment Holdings [Line Items]
Fair Value	228,407	197,989
Northeast
Summary of Investment Holdings [Line Items]
Fair Value	213,403	266,612
Midwest
Summary of Investment Holdings [Line Items]
Fair Value	134,149	117,886
Diversified/Conglomerate Services
Summary of Investment Holdings [Line Items]
Fair Value	255,141	268,954
Home and Office Furnishings, Housewares, and Durable Consumer Products
Summary of Investment Holdings [Line Items]
Fair Value	155,897	143,685
Machinery (Non-Agriculture, Non-Construction, and Non-Electronic)
Summary of Investment Holdings [Line Items]
Fair Value	92,293	20,088
Hotels, Motels, Inns, and Gaming
Summary of Investment Holdings [Line Items]
Fair Value	80,557	58,713
Buildings and Real Estate
Summary of Investment Holdings [Line Items]
Fair Value	64,352	60,571
Healthcare, Education, and Childcare
Summary of Investment Holdings [Line Items]
Fair Value	50,237	37,445
Oil and Gas
Summary of Investment Holdings [Line Items]
Fair Value	45,983	0
Leisure, Amusement, Motion Pictures, and Entertainment
Summary of Investment Holdings [Line Items]
Fair Value	38,356	47,616
Mining, Steel, Iron and Non-Precious Metals
Summary of Investment Holdings [Line Items]
Fair Value	27,831	25,998
Aerospace and Defense
Summary of Investment Holdings [Line Items]
Fair Value	25,754	22,215
Chemicals, Plastics, and Rubber
Summary of Investment Holdings [Line Items]
Fair Value	19,256	24,891
Printing and Publishing
Summary of Investment Holdings [Line Items]
Fair Value	15,210	0
Cargo Transport
Summary of Investment Holdings [Line Items]
Fair Value	13,500	14,707
Telecommunications
Summary of Investment Holdings [Line Items]
Fair Value	8,881	18,987
Other
Summary of Investment Holdings [Line Items]
Fair Value	$ 9,560	$ 9,673
Investment Owned, At Cost | Investment Type Concentration Risk
Summary of Investment Holdings [Line Items]
Concentration risk, percentage	100.00%	100.00%
Investment Owned, At Fair Value | Investment Type Concentration Risk
Summary of Investment Holdings [Line Items]
Concentration risk, percentage	100.00%	100.00%
Investment Owned, At Fair Value | Industry Concentration Risk
Summary of Investment Holdings [Line Items]
Concentration risk, percentage	100.00%	100.00%
Investment Owned, At Fair Value | Industry Concentration Risk | Diversified/Conglomerate Services
Summary of Investment Holdings [Line Items]
Concentration risk, percentage	28.30%	35.70%
Investment Owned, At Fair Value | Industry Concentration Risk | Home and Office Furnishings, Housewares, and Durable Consumer Products
Summary of Investment Holdings [Line Items]
Concentration risk, percentage	17.30%	19.10%
Investment Owned, At Fair Value | Industry Concentration Risk | Machinery (Non-Agriculture, Non-Construction, and Non-Electronic)
Summary of Investment Holdings [Line Items]
Concentration risk, percentage	10.20%	2.70%
Investment Owned, At Fair Value | Industry Concentration Risk | Hotels, Motels, Inns, and Gaming
Summary of Investment Holdings [Line Items]
Concentration risk, percentage	8.90%	7.80%
Investment Owned, At Fair Value | Industry Concentration Risk | Buildings and Real Estate
Summary of Investment Holdings [Line Items]
Concentration risk, percentage	7.10%	8.00%
Investment Owned, At Fair Value | Industry Concentration Risk | Healthcare, Education, and Childcare
Summary of Investment Holdings [Line Items]
Concentration risk, percentage	5.60%	5.00%
Investment Owned, At Fair Value | Industry Concentration Risk | Oil and Gas
Summary of Investment Holdings [Line Items]
Concentration risk, percentage	5.10%	0.00%
Investment Owned, At Fair Value | Industry Concentration Risk | Leisure, Amusement, Motion Pictures, and Entertainment
Summary of Investment Holdings [Line Items]
Concentration risk, percentage	4.20%	6.30%
Investment Owned, At Fair Value | Industry Concentration Risk | Mining, Steel, Iron and Non-Precious Metals
Summary of Investment Holdings [Line Items]
Concentration risk, percentage	3.10%	3.50%
Investment Owned, At Fair Value | Industry Concentration Risk | Aerospace and Defense
Summary of Investment Holdings [Line Items]
Concentration risk, percentage	2.90%	2.80%
Investment Owned, At Fair Value | Industry Concentration Risk | Chemicals, Plastics, and Rubber
Summary of Investment Holdings [Line Items]
Concentration risk, percentage	2.10%	3.30%
Investment Owned, At Fair Value | Industry Concentration Risk | Printing and Publishing
Summary of Investment Holdings [Line Items]
Concentration risk, percentage	1.70%	0.00%
Investment Owned, At Fair Value | Industry Concentration Risk | Cargo Transport
Summary of Investment Holdings [Line Items]
Concentration risk, percentage	1.50%	2.00%
Investment Owned, At Fair Value | Industry Concentration Risk | Telecommunications
Summary of Investment Holdings [Line Items]
Concentration risk, percentage	1.00%	2.50%
Investment Owned, At Fair Value | Industry Concentration Risk | Other
Summary of Investment Holdings [Line Items]
Concentration risk, percentage	1.00%	1.30%
Investment Owned, At Fair Value | Geographic Regions Risk
Summary of Investment Holdings [Line Items]
Concentration risk, percentage	100.00%	100.00%
Investment Owned, At Fair Value | Geographic Regions Risk | South
Summary of Investment Holdings [Line Items]
Concentration risk, percentage	36.20%	22.70%
Investment Owned, At Fair Value | Geographic Regions Risk | West
Summary of Investment Holdings [Line Items]
Concentration risk, percentage	25.30%	26.30%
Investment Owned, At Fair Value | Geographic Regions Risk | Northeast
Summary of Investment Holdings [Line Items]
Concentration risk, percentage	23.60%	35.40%
Investment Owned, At Fair Value | Geographic Regions Risk | Midwest
Summary of Investment Holdings [Line Items]
Concentration risk, percentage	14.90%	15.60%
Debt Securities
Summary of Investment Holdings [Line Items]
Cost	$ 665,697	$ 555,597
Fair Value	$ 613,606	$ 513,251
Debt Securities | Investment Owned, At Cost | Investment Type Concentration Risk
Summary of Investment Holdings [Line Items]
Concentration risk, percentage	76.60%	77.10%
Debt Securities | Investment Owned, At Fair Value | Investment Type Concentration Risk
Summary of Investment Holdings [Line Items]
Concentration risk, percentage	67.90%	68.20%
Secured First Lien Debt
Summary of Investment Holdings [Line Items]
Cost	$ 517,539	$ 471,439
Fair Value	$ 476,126	$ 437,517
Secured First Lien Debt | Investment Owned, At Cost | Investment Type Concentration Risk
Summary of Investment Holdings [Line Items]
Concentration risk, percentage	59.60%	65.40%
Secured First Lien Debt | Investment Owned, At Fair Value | Investment Type Concentration Risk
Summary of Investment Holdings [Line Items]
Concentration risk, percentage	52.70%	58.10%
Secured Second Lien Debt
Summary of Investment Holdings [Line Items]
Cost	$ 148,158	$ 84,158
Fair Value	$ 137,480	$ 75,734
Secured Second Lien Debt | Investment Owned, At Cost | Investment Type Concentration Risk
Summary of Investment Holdings [Line Items]
Concentration risk, percentage	17.00%	11.70%
Secured Second Lien Debt | Investment Owned, At Fair Value | Investment Type Concentration Risk
Summary of Investment Holdings [Line Items]
Concentration risk, percentage	15.20%	10.10%
Equity Securities
Summary of Investment Holdings [Line Items]
Cost	$ 202,807	$ 165,033
Fair Value	$ 289,202	$ 240,292
Equity Securities | Investment Owned, At Cost | Investment Type Concentration Risk
Summary of Investment Holdings [Line Items]
Concentration risk, percentage	23.40%	22.90%
Equity Securities | Investment Owned, At Fair Value | Investment Type Concentration Risk
Summary of Investment Holdings [Line Items]
Concentration risk, percentage	32.10%	31.80%
Preferred Equity
Summary of Investment Holdings [Line Items]
Cost	$ 151,969	$ 149,099
Fair Value	$ 214,664	$ 222,585
Preferred Equity | Investment Owned, At Cost | Investment Type Concentration Risk
Summary of Investment Holdings [Line Items]
Concentration risk, percentage	17.50%	20.70%
Preferred Equity | Investment Owned, At Fair Value | Investment Type Concentration Risk
Summary of Investment Holdings [Line Items]
Concentration risk, percentage	23.80%	29.50%
Common Equity/ Equivalents
Summary of Investment Holdings [Line Items]
Cost	$ 50,838	$ 15,934
Fair Value	$ 74,538	$ 17,707
Common Equity/ Equivalents | Investment Owned, At Cost | Investment Type Concentration Risk
Summary of Investment Holdings [Line Items]
Concentration risk, percentage	5.90%	2.20%
Common Equity/ Equivalents | Investment Owned, At Fair Value | Investment Type Concentration Risk
Summary of Investment Holdings [Line Items]
Concentration risk, percentage	8.30%	2.30%

[1] Cumulative gross unrealized appreciation for federal income tax purposes is $150.4 million; cumulative gross unrealized depreciation for federal income tax purposes is $119.3 million. Cumulative net unrealized appreciation is $31.1 million, based on a tax cost of $722.4 million.

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INVESTMENTS - Investments Classified by Contractual Maturity Date (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Mar. 31, 2023	[1]
Investments, Debt and Equity Securities [Abstract]
For the remaining three months ending March 31, 2024	$ 33,918
2025	100,470
2026	204,919
2027	162,746
2028	38,250
Thereafter	125,394
Total contractual repayments	665,697
Investments in equity securities	202,807
Total cost basis of investments held as of December 31, 2023:	$ 868,504	$ 720,630

[1] Cumulative gross unrealized appreciation for federal income tax purposes is $150.4 million; cumulative gross unrealized depreciation for federal income tax purposes is $119.3 million. Cumulative net unrealized appreciation is $31.1 million, based on a tax cost of $722.4 million.

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RELATED PARTY TRANSACTIONS - Narrative (Details) - USD ($)		3 Months Ended		9 Months Ended		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Mar. 31, 2023
Related Party Transaction [Line Items]
Base management fee		2.00%	2.00%	2.00%	2.00%
Investment company, excess expense reimbursable		$ 57,000	$ 40,000	$ 215,000	$ 146,000
Ratio of net investment income (loss) to average net assets – annualized		4.73%	5.15%	1.32%	5.50%
Investment company, capital gains-based incentive fees				$ 1,100,000		$ 0
Investment company, capital gains-based incentive fees payable (reversal)		$ (600,000)	$ 1,400,000	9,300,000	$ 700,000
Administration fee	[1]	450,000	410,000	1,306,000	1,352,000
Success fee income		1,382,000	1,061,000	1,382,000	7,794,000
Related Party
Related Party Transaction [Line Items]
Success fee income			$ 300,000	300,000	$ 1,600,000
Due from related parties		$ 22,000		$ 22,000		$ 0
Affiliated Entity | Advisory Agreement
Related Party Transaction [Line Items]
Base management fee				2.00%
Base management fee, percent fee				100.00%
Maximum base management fee paid cannot exceed a percentage of total assets				2.00%
Incentive fee base on minimum rate of return required on investment				$ 0
Percentage of pre-incentive fee net investment income is less than the hurdle rate				100.00%
Investment company, pre-incentive fee net investment income, percent threshold of net assets				2.1875%
Pre-incentive fee net investment income exceeds the hurdle rate				20.00%
Investment company, capital gains-based incentive fees		20.00%		20.00%
Affiliated Entity | Advisory Agreement | Minimum
Related Party Transaction [Line Items]
Ratio of net investment income (loss) to average net assets – annualized				1.75%
Adviser | Chief Executive Officer | Related Party
Related Party Transaction [Line Items]
Ownership percentage by parent		100.00%		100.00%
Administrator | Chief Executive Officer | Related Party
Related Party Transaction [Line Items]
Ownership percentage by parent		100.00%		100.00%
Gladstone Securities, LLC | Chief Executive Officer | Related Party
Related Party Transaction [Line Items]
Ownership percentage by parent		100.00%		100.00%

[1] Refer to Note 4 — Related Party Transactions in the accompanying Notes to Consolidated Financial Statements for additional information.

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RELATED PARTY TRANSACTIONS - Schedule of Related Party Transactions (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Related Party Transactions [Abstract]
Average total assets subject to base management fee		$ 920,400	$ 757,800	$ 858,267	$ 731,000
Multiplied by prorated annual base management fee of 2.0%		0.50%	0.50%	1.50%	1.50%
Base management fee	[1]	$ 4,602	$ 3,789	$ 12,874	$ 10,965
Credits to fees from Adviser - other		(1,793)	(756)	(5,117)	(3,131)
Net base management fee		2,809	3,033	7,757	7,834
Loan servicing fee	[1]	2,332	2,080	6,829	5,754
Credits to base management fee – loan servicing fee		(2,332)	(2,080)	(6,829)	(5,754)
Net loan servicing fee		0	0	0	0
Incentive fee – income-based		2,282	2,503	6,142	7,016
Incentive fee – capital gains-based		(615)	1,442	9,259	706
Total incentive fee	[1]	1,667	3,945	15,401	7,722
Credits to fees from Adviser - other		0	0	0	0
Net total incentive fee		$ 1,667	$ 3,945	$ 15,401	$ 7,722
Base management fee		2.00%	2.00%	2.00%	2.00%

[1] Refer to Note 4 — Related Party Transactions in the accompanying Notes to Consolidated Financial Statements for additional information.

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RELATED PARTY TRANSACTIONS - Schedule of Related Party Fees Due (Details) - USD ($) $ in Thousands		Dec. 31, 2023	Mar. 31, 2023
Related Party Transaction [Line Items]
Capital gains-based incentive fee		$ 34,400	$ 25,100
Related Party
Related Party Transaction [Line Items]
Total related party fees due		38,268	29,635
Related Party | Adviser
Related Party Transaction [Line Items]
Total related party fees due	[1]	37,693	28,919
Related Party | Administrator
Related Party Transaction [Line Items]
Total related party fees due	[1]	575	716
Related Party | Base management and loan servicing fee due to Adviser, net of credits
Related Party Transaction [Line Items]
Base management and loan servicing fee due to Adviser, net of credits		1,006	1,574
Related Party | Incentive fee due to Adviser
Related Party Transaction [Line Items]
Total related party fees due		36,640	27,259
Related Party | Other due to Adviser
Related Party Transaction [Line Items]
Total related party fees due		$ 47	$ 86

[1] Refer to Note 4 — Related Party Transactions in the accompanying Notes to Consolidated Financial Statements for additional information.

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BORROWINGS - Revolving Line of Credit Narrative (Details) - USD ($) $ in Thousands			9 Months Ended	12 Months Ended
	Oct. 30, 2023	Apr. 10, 2023	Dec. 31, 2023	Mar. 31, 2023	Oct. 29, 2023
Debt Instrument [Line Items]
Indebtedness asset coverage on our senior securities			206.90%	244.70%
Revolving Line of Credit | Line of Credit
Debt Instrument [Line Items]
Unused fee percentage				1.00%
Credit Facility
Debt Instrument [Line Items]
Term	2 years
Credit Facility | Line of Credit
Debt Instrument [Line Items]
Unused fee percentage			0.50%
Credit Facility | Revolving Line of Credit | Line of Credit
Debt Instrument [Line Items]
Commitment amount	$ 135,000		$ 135,000	$ 180,000	$ 180,000
Covenant, required minimum net worth of mandatory redeemable term preferred stock			$ 210,000
Covenant, required minimum net worth of mandatory redeemable term preferred stock, plus percent of all equity and subordinated debt raised			50.00%
Covenant, required minimum net worth of mandatory redeemable term preferred stock, minus percent of any equity or subordinated debt redeemed or retired			50.00%
Covenant, required minimum net worth of mandatory redeemable term preferred stock, plus percent of all equity and subordinated debt raised, minus percent of any equity or subordinated debt redeemed or retired			$ 339,000
Indebtedness asset coverage on our senior securities			206.90%
Senior security, indebtedness, asset coverage amount			$ 789,800
Credit Facility | Revolving Line of Credit | Line of Credit | Minimum
Debt Instrument [Line Items]
Indebtedness asset coverage on our senior securities			150.00%
Credit Facility | Revolving Line of Credit | Line of Credit | Less than or Equal to 50% of Commitment
Debt Instrument [Line Items]
Unused fee percentage	0.50%
Credit Facility | Revolving Line of Credit | Line of Credit | Greater Than 50% But Less Than or Equal to 65% of Commitment
Debt Instrument [Line Items]
Unused fee percentage	0.75%
Credit Facility | Revolving Line of Credit | Line of Credit | Greater Than 65% Of Commitment
Debt Instrument [Line Items]
Unused fee percentage	1.00%
Credit Facility | Revolving Line of Credit | Line of Credit | Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Debt instrument, variable rate floor	0.35%		0.35%
Debt instrument, basis spread on variable rate		0.11%	3.25%
Credit Facility | Revolving Line of Credit | Line of Credit | SOFR, Tranche One
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	3.15%
Credit Facility | Revolving Line of Credit | Line of Credit | SOFR, Tranche Two
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	3.40%
Credit Facility | Revolving Line of Credit | Line of Credit | SOFR, Thereafter
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	3.65%
Credit Facility | Revolving Line of Credit | Line of Credit | SOFR, Thereafter, Adjustment
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	0.10%

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BORROWINGS - Schedule of Line of Credit Facilities (Details) - USD ($)	3 Months Ended		9 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Oct. 30, 2023	Oct. 29, 2023	Mar. 31, 2023
Debt Instrument [Line Items]
Borrowings outstanding at cost	$ 82,600,000		$ 82,600,000				$ 35,200,000
Credit Facility | Revolving Line of Credit | Line of Credit
Debt Instrument [Line Items]
Commitment amount	135,000,000		135,000,000		$ 135,000,000	$ 180,000,000	180,000,000
Borrowings outstanding at cost	82,600,000		82,600,000				35,200,000
Availability	52,400,000		52,400,000				144,800,000
Weighted-average borrowings outstanding	$ 77,359,000	$ 26,054,000	$ 57,135,000	$ 12,621,000
Effective interest rate	9.20%	12.80%	10.20%	19.80%
Commitment (unused) fees incurred	$ 113,000	$ 394,000	$ 777,000	$ 1,279,000
Adjusted availability	$ 52,400,000		$ 52,400,000				$ 144,800,000

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BORROWINGS - Fair Value Narrative (Details) - USD ($) $ in Thousands			9 Months Ended	12 Months Ended
	Oct. 30, 2023	Apr. 10, 2023	Dec. 31, 2023	Mar. 31, 2023
Debt Instrument [Line Items]
Fair Value			$ 902,808	$ 753,543	[1]
Collateral Pledged
Debt Instrument [Line Items]
Fair Value			$ 702,900	$ 639,500
Revolving Line of Credit | Line of Credit
Debt Instrument [Line Items]
Unused fee percentage				1.00%
Credit Facility | Line of Credit
Debt Instrument [Line Items]
Unused fee percentage			0.50%
Credit Facility | Revolving Line of Credit | Line of Credit | Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Debt instrument, variable rate floor	0.35%		0.35%
Debt instrument, basis spread on variable rate		0.11%	3.25%
Credit Facility | Revolving Line of Credit | Line of Credit | LIBOR
Debt Instrument [Line Items]
Debt instrument, variable rate floor				0.50%
Debt instrument, basis spread on variable rate				2.94%

[1] Cumulative gross unrealized appreciation for federal income tax purposes is $150.4 million; cumulative gross unrealized depreciation for federal income tax purposes is $119.3 million. Cumulative net unrealized appreciation is $31.1 million, based on a tax cost of $722.4 million.

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BORROWINGS - Schedule of Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation (Details) - Significant Unobservable Inputs (Level 3) - Fair Value, Recurring - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Mar. 31, 2023
Debt Instrument [Line Items]
Recurring Fair Value Measurements Reported in Consolidated Statements of Assets and Liabilities Using Significant Unobservable Inputs (Level 3)	$ 82,600		$ 82,600		$ 35,171
Long-Term Debt
Fair Value Measurements of Borrowings Using Significant Unobservable Inputs (Level 3) Reported in Consolidated Statements of Assets and Liabilities
Beginning balance	79,208	$ 16,600	35,171	$ 0
Borrowings	104,900	41,400	231,900	82,900
Repayments	(101,600)	(28,400)	(184,500)	(53,300)
Unrealized appreciation (depreciation)	92	0	29	0
Ending balance	$ 82,600	$ 29,600	$ 82,600	$ 29,600

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BORROWINGS - Notes Payable Narrative (Details) - USD ($)	1 Months Ended
	May 31, 2023	Aug. 31, 2021	Mar. 31, 2021	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Aggregate Principal Amount				$ 419,838,000		$ 292,088,000
Notes Payable
Debt Instrument [Line Items]
Aggregate Principal Amount				$ 337,238,000	$ 262,488,000
Notes Payable | 5.00% Notes due 2026
Debt Instrument [Line Items]
Interest Rate			5.00%	5.00%	5.00%
Aggregate Principal Amount			$ 127,900,000	$ 127,938,000	$ 127,938,000
Proceeds from issuance of long-term debt			123,800,000
Borrowings outstanding at cost			$ 4,100,000
Notes payable, fair value disclosure				$ 122,900,000	$ 121,500,000
Notes Payable | 4.875% Notes due 2028
Debt Instrument [Line Items]
Interest Rate		4.875%		4.875%	4.875%
Aggregate Principal Amount		$ 134,600,000		$ 134,550,000	$ 134,550,000
Proceeds from issuance of long-term debt		131,300,000
Borrowings outstanding at cost		$ 3,300,000
Notes payable, fair value disclosure				$ 125,900,000	$ 127,400,000
Notes Payable | 8.00% 2028 Notes
Debt Instrument [Line Items]
Interest Rate	8.00%			8.00%
Aggregate Principal Amount	$ 74,800,000			$ 74,750,000
Proceeds from issuance of long-term debt	72,300,000
Borrowings outstanding at cost	$ 2,500,000
Notes payable, fair value disclosure				$ 76,700,000

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BORROWINGS - Schedule of Debt (Details) - USD ($)	Dec. 31, 2023	May 31, 2023	Mar. 31, 2023	Dec. 31, 2022	Aug. 31, 2021	Mar. 31, 2021
Debt Instrument [Line Items]
Aggregate Principal Amount	$ 419,838,000			$ 292,088,000
Total borrowings	$ 413,504,000		$ 292,607,000
Indebtedness asset coverage on our senior securities	206.90%		244.70%
Notes Payable
Debt Instrument [Line Items]
Notes Outstanding	$ 13,489,500		$ 10,499,500
Aggregate Principal Amount	337,238,000		262,488,000
Less: Unamortized Discounts	(6,334,000)		(5,052,000)
Total borrowings	$ 330,904,000		$ 257,436,000
Notes Payable | 5.00% 2026 Notes
Debt Instrument [Line Items]
Interest Rate	5.00%		5.00%			5.00%
Notes Outstanding	$ 5,117,500		$ 5,117,500
Principal Amount per Note	25.00		25.00
Aggregate Principal Amount	$ 127,938,000		$ 127,938,000			$ 127,900,000
Notes Payable | 4.875% 2028 Notes
Debt Instrument [Line Items]
Interest Rate	4.875%		4.875%		4.875%
Notes Outstanding	$ 5,382,000		$ 5,382,000
Principal Amount per Note	25.00		25.00
Aggregate Principal Amount	$ 134,550,000		$ 134,550,000		$ 134,600,000
Notes Payable | 8.00% 2028 Notes
Debt Instrument [Line Items]
Interest Rate	8.00%	8.00%
Notes Outstanding	$ 2,990,000
Principal Amount per Note	25.00
Aggregate Principal Amount	$ 74,750,000	$ 74,800,000

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REGISTRATION STATEMENT AND COMMON EQUITY OFFERINGS (Details) - USD ($)	3 Months Ended		9 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Aug. 31, 2022	Sep. 03, 2021
Government Assistance [Line Items]
Securities, aggregate value authorized						$ 300,000,000
Securities, remaining capacity of aggregate value authorized	$ 194,500,000		$ 194,500,000
Proceeds from issuance of common stock			25,251,000	$ 3,463,000
Common Stock ATM Program
Government Assistance [Line Items]
Sale of stock, aggregate offering price authorized					$ 50,000,000
Sale of stock, remaining capacity of authorized offering price	$ 19,300,000		$ 19,300,000
Sale of stock, number of shares sold (in shares)	1,456,279	212,338	1,760,449	241,978
Sale of stock, weighted-average gross price per share (in USD per share)	$ 14.51	$ 14.11	$ 14.34	$ 14.31
Sale of stock, consideration received	$ 21,100,000	$ 3,000,000	$ 25,300,000	$ 3,500,000
Sale of stock, weighted-average net price per share after deducting commissions and offering costs (in USD per share)	$ 14.28	$ 13.91	$ 14.12	$ 14.11
Proceeds from issuance of common stock	$ 20,800,000		$ 24,900,000	$ 3,400,000

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NET INCREASE (DECREASE) IN NET ASSETS RESULTING FROM OPERATIONS PER WEIGHTED-AVERAGE COMMON SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Earnings Per Share [Abstract]
Net increase in net assets resulting from operations	$ 6,579	$ 15,779	$ 62,721	$ 30,889
Weighted-average common shares, basic (in shares)	34,351,597	33,316,055	33,921,300	33,246,811
Weighted-average common shares, diluted (in shares)	34,351,597	33,316,055	33,921,300	33,246,811
Net increase in net assets resulting from operations per weighted-average common share, basic (in USD per share)	$ 0.19	$ 0.47	$ 1.85	$ 0.93
Net increase in net assets resulting from operations per weighted-average common share, diluted (in USD per share)	$ 0.19	$ 0.47	$ 1.85	$ 0.93

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DISTRIBUTIONS TO COMMON STOCKHOLDERS - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended												9 Months Ended		12 Months Ended
	Dec. 31, 2023		Sep. 30, 2023	[1]	Jun. 30, 2023	[1]	Dec. 31, 2022		Sep. 30, 2022	[1]	Jun. 30, 2022	[1]	Dec. 31, 2023	Dec. 31, 2022	Mar. 31, 2023
Equity [Abstract]
Investment company, cash distributions paid to common stockholders from ordinary income	53.20%												53.20%
Investment company, cash distributions paid to common stockholders from capital gains	46.80%												46.80%
Cash distributions to common stockholders													$ 67,400	$ 30,900
Distributions to common stockholders from ordinary income	$ 15,093	[1]	$ 6,665		$ 7,069		$ 7,360	[1]	$ 4,678		$ 3,188				$ 21,400
Distributions to common stockholders from net realized gains	28,009	[1]	$ 5,519		$ 5,024		4,652	[1]	$ 2,797		$ 8,268				$ 10,600
Investment company, net adjustments for tax difference to capital distribution	$ 400						$ 300						$ 400	$ 1,600

[1] Refer to Note 8 — Distributions to Common Stockholders in the accompanying Notes to Consolidated Financial Statements for additional information.

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DISTRIBUTIONS TO COMMON STOCKHOLDERS - Schedule of Investment Company, Cash Distributions to Common Stockholders (Details) - $ / shares																									9 Months Ended
	Dec. 29, 2023	Dec. 15, 2023	Nov. 30, 2023	Nov. 17, 2023	Oct. 31, 2023	Sep. 29, 2023	Sep. 15, 2023	Aug. 31, 2023	Jul. 31, 2023	Jun. 30, 2023	Jun. 15, 2023	May 31, 2023	Apr. 28, 2023	Dec. 30, 2022	Dec. 15, 2022	Nov. 30, 2022	Oct. 31, 2022	Sep. 30, 2022	Aug. 31, 2022	Jul. 29, 2022	Jun. 30, 2022	Jun. 15, 2022	May 31, 2022	Apr. 29, 2022	Dec. 31, 2023	Dec. 31, 2022
Equity [Abstract]
Common stock dividends paid (in USD per share)	$ 0.08	$ 0.88	$ 0.08	$ 0.12	$ 0.08	$ 0.08	$ 0.12	$ 0.08	$ 0.08	$ 0.08	$ 0.12	$ 0.08	$ 0.08	$ 0.080	$ 0.120	$ 0.080	$ 0.080	$ 0.075	$ 0.075	$ 0.075	$ 0.075	$ 0.120	$ 0.075	$ 0.075	$ 1.96	$ 0.930

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COMMITMENTS AND CONTINGENCIES - Narrative (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Mar. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
Escrow holdbacks	$ 1,000	$ 85

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COMMITMENTS AND CONTINGENCIES - Summary of Principal Balances of Unused Line of Credit and Delayed Draw Term Debt Commitments and Guaranties (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Dec. 31, 2023	Mar. 31, 2023
Other Commitments [Line Items]
Total	$ 1,500	$ 2,150
Unused line of credit commitments
Other Commitments [Line Items]
Total	$ 1,500	$ 2,150

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FINANCIAL HIGHLIGHTS (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended												9 Months Ended
	Dec. 31, 2023		Sep. 30, 2023		Jun. 30, 2023		Dec. 31, 2022		Sep. 30, 2022		Jun. 30, 2022		Dec. 31, 2023	Dec. 31, 2022	Mar. 31, 2023
Investment Company, Financial Highlights [Roll Forward]
Net asset value at beginning of period (in USD per share)	$ 14.03				$ 13.09		$ 13.31				$ 13.43		$ 13.09	$ 13.43
Income from investment operations
Net investment income (in USD per share)	0.28						0.26						0.49	0.82
Net realized gain (in USD per share)	1.27						0.11						1.32	0.32
Net unrealized (depreciation) appreciation (in USD per share)	(1.36)						0.10						0.04	(0.21)
Total from investment operations (in USD per share)	0.19						0.47						1.85	0.93
Effect of equity capital activity
Cash distributions to common stockholders from net investment income (in USD per share)	(0.43)	[1]	$ (0.20)	[1]	(0.21)	[1]	(0.22)	[1]	$ (0.14)	[1]	(0.10)	[1]	(0.84)	(0.46)
Cash distributions to common stockholders from net realized gains (in USD per share)	(0.81)	[1]	(0.16)	[1]	(0.15)	[1]	(0.14)	[1]	(0.08)	[1]	(0.25)	[1]	(1.12)	(0.47)
Discounts, commissions and offering costs (in USD per share)	(0.01)						0						(0.01)	0
Net accretive effective of equity offering (in USD per share)	0.05						0.01						0.05	0.01
Total from equity capital activity (in USD per share)	(1.20)						(0.35)						(1.92)	(0.92)
Other, net (in USD per share)	(0.01)						0						(0.01)	(0.01)
Net asset value at end of period (in USD per share)	13.01		14.03				13.43		13.31				13.01	13.43
Per common share market value at beginning of period (in USD per share)	12.74				$ 13.25		12.10				$ 16.13		13.25	16.13
Per common share market value at end of period (in USD per share)	$ 14.15		$ 12.74				$ 12.91		$ 12.10				$ 14.15	$ 12.91
Total investment return	20.85%						9.63%						22.72%	(14.36%)
Common stock outstanding at end of period (in shares)	35,351,954						33,447,001						35,351,954	33,447,001	33,591,505
Statement of Assets and Liabilities Data:
Net assets at end of period	$ 459,941						$ 449,191						$ 459,941	$ 449,191
Average net assets	475,007						445,431						455,627	446,742
Senior Securities Data:
Total borrowings, at cost	$ 419,838						$ 292,088						$ 419,838	$ 292,088
Ratios/Supplemental Data:
Ratio of net expenses to average net assets – annualized	11.23%						11.70%						13.78%	10.22%
Ratio of net investment (loss) income to average net assets – annualized	8.21%						7.70%						4.80%	8.14%
Ratio of expenses to average net assets - annualized	14.70%						14.24%						17.27%	12.87%
Ratio of net investment income (loss) to average net assets – annualized	4.73%						5.15%						1.32%	5.50%

[1] Refer to Note 8 — Distributions to Common Stockholders in the accompanying Notes to Consolidated Financial Statements for additional information.

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SUBSEQUENT EVENTS - Schedule of Distributions to Common Stockholders (Details) - $ / shares																												3 Months Ended	9 Months Ended
	Mar. 29, 2024	Feb. 29, 2024	Jan. 31, 2024	Dec. 29, 2023	Dec. 15, 2023	Nov. 30, 2023	Nov. 17, 2023	Oct. 31, 2023	Sep. 29, 2023	Sep. 15, 2023	Aug. 31, 2023	Jul. 31, 2023	Jun. 30, 2023	Jun. 15, 2023	May 31, 2023	Apr. 28, 2023	Dec. 30, 2022	Dec. 15, 2022	Nov. 30, 2022	Oct. 31, 2022	Sep. 30, 2022	Aug. 31, 2022	Jul. 29, 2022	Jun. 30, 2022	Jun. 15, 2022	May 31, 2022	Apr. 29, 2022	Mar. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Subsequent Event [Line Items]
Common stock dividends paid (in USD per share)				$ 0.08	$ 0.88	$ 0.08	$ 0.12	$ 0.08	$ 0.08	$ 0.12	$ 0.08	$ 0.08	$ 0.08	$ 0.12	$ 0.08	$ 0.08	$ 0.080	$ 0.120	$ 0.080	$ 0.080	$ 0.075	$ 0.075	$ 0.075	$ 0.075	$ 0.120	$ 0.075	$ 0.075		$ 1.96	$ 0.930
Subsequent Event
Subsequent Event [Line Items]
Common stock dividends paid (in USD per share)			$ 0.08
Subsequent Event | Forecast
Subsequent Event [Line Items]
Common stock dividends paid (in USD per share)	$ 0.08	$ 0.08																										$ 0.24

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SUBSEQUENT EVENTS - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended	3 Months Ended		9 Months Ended
	Jan. 24, 2024	Jan. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Feb. 05, 2024	Feb. 04, 2024	Oct. 30, 2023	Oct. 29, 2023	Mar. 31, 2023
Adviser | David Gladstone
Subsequent Event [Line Items]
Ownership percentage by parent			100.00%		100.00%
Adviser | Gladstone Companies, Inc
Subsequent Event [Line Items]
Ownership percentage by parent			100.00%		100.00%
Gladstone Companies, Ltd. | David Gladstone
Subsequent Event [Line Items]
Ownership percentage by parent			100.00%		100.00%
Gladstone Companies, Inc | Gladstone Companies, Ltd.
Subsequent Event [Line Items]
Ownership percentage by parent			100.00%		100.00%
Credit Facility | Revolving Line of Credit | Line of Credit
Subsequent Event [Line Items]
Commitment amount			$ 135,000		$ 135,000				$ 135,000	$ 180,000	$ 180,000
Common Stock ATM Program
Subsequent Event [Line Items]
Sale of stock, number of shares sold (in shares)			1,456,279	212,338	1,760,449	241,978
Sale of stock, weighted-average gross price per share (in USD per share)			$ 14.51	$ 14.11	$ 14.34	$ 14.31
Sale of stock, consideration received			$ 21,100	$ 3,000	$ 25,300	$ 3,500
Subsequent Event | Adviser | David Gladstone
Subsequent Event [Line Items]
Ownership percentage by parent	100.00%
Subsequent Event | Adviser | Voting Trust Board
Subsequent Event [Line Items]
Ownership percentage of voting rights	20.00%
Effective period after agreement is entered into	1 year
Subsequent Event | Credit Facility | Revolving Line of Credit | Line of Credit
Subsequent Event [Line Items]
Commitment amount							$ 200,000	$ 135,000
Subsequent Event | Common Stock ATM Program
Subsequent Event [Line Items]
Sale of stock, number of shares sold (in shares)		538,206
Sale of stock, weighted-average gross price per share (in USD per share)		$ 14.53
Sale of stock, consideration received		$ 7,700