Share Data and Net Assets (Tables)

12 Months Ended

Sep. 30, 2025

Stockholders' Equity Note [Abstract]

Schedule of Basic and Diluted Earnings Per Share

The following table sets forth the computation of basic and diluted earnings per share, pursuant to ASC Topic 260-10, Earnings per Share, for the years ended September 30, 2025, 2024 and 2023:

(Share amounts in thousands)	Year ended September 30, 2025		Year ended September 30, 2024		Year ended September 30, 2023
Earnings (loss) per common share — basic and diluted:
Net increase (decrease) in net assets resulting from operations	$	33,920	$	57,905	$	117,331
Weighted average common shares outstanding — basic and diluted	86,079		80,418		72,119
Earnings (loss) per common share — basic and diluted	$	0.39	$	0.72	$	1.63

Schedule of Changes in Net Assets

The following table presents the changes in net assets for the years ended September 30, 2025, 2024 and 2023:

	Common Stock
(Share amounts in thousands)	Shares	Par Value		Additional paid-in-capital		Accumulated Overdistributed Earnings		Total Net Assets
Balance as of September 30, 2022	61,125	$	611	$	1,827,721	$	(582,769)	$	1,245,563
Net investment income	—	—		—		180,697		180,697
Net unrealized appreciation (depreciation)	—	—		—		(28,555)		(28,555)
Net realized gains (losses)	—	—		—		(33,155)		(33,155)
(Provision) benefit for taxes on realized and unrealized gains (losses)	—	—		—		(1,656)		(1,656)
Distributions to stockholders	—	—		—		(185,900)		(185,900)
Issuance of common stock in connection with the OSI2 Merger	15,860	159		333,875		—		334,034
Issuance of common stock in connection with the "at the market" offering	69	1		1,299		—		1,300
Issuance of common stock under dividend reinvestment plan	297	3		5,851		—		5,854
Repurchase of common stock under dividend reinvestment plan	(126)	(2)		(2,416)		—		(2,418)
Balance as of September 30, 2023	77,225	$	772	$	2,166,330	$	(651,338)	$	1,515,764
Net investment income	—	—		—		175,052		175,052
Net unrealized appreciation (depreciation)	—	—		—		19,101		19,101
Net realized gains (losses)	—	—		—		(136,356)		(136,356)
(Provision) benefit for taxes on realized and unrealized gains (losses)	—	—		—		108		108
Distributions to stockholders	—	—		—		(184,027)		(184,027)
Issuance of common stock in connection with the "at the market" offering	4,725	47		92,460		—		92,507
Issuance of common stock under dividend reinvestment plan	390	4		7,209		—		7,213
Repurchase of common stock under dividend reinvestment plan	(95)	(1)		(1,550)		—		(1,551)
Balance as of September 30, 2024	82,245	$	822	$	2,264,449	$	(777,460)	$	1,487,811
Net investment income	—	—		—		152,640		152,640
Net unrealized appreciation (depreciation)	—	—		—		(101,229)		(101,229)
Net realized gains (losses)	—	—		—		(17,097)		(17,097)
(Provision) benefit for taxes on realized and unrealized gains (losses)	—	—		—		(394)		(394)
Distributions to stockholders	—	—		—		(141,603)		(141,603)
Return of capital	—	—		(17,262)		—		(17,262)
Issuance of common stock under dividend reinvestment plan	730	7		10,659		—		10,666
Repurchase of common stock under dividend reinvestment plan	(730)	(7)		(10,659)		—		(10,666)
Issuance of common stock in private placement	5,672	57		99,943		—		100,000
Issuance of common stock in connection with the "at the market" offering	169	2		2,945		—		2,947
Balance as of September 30, 2025	88,086	$	881	$	2,350,075	$	(885,143)	$	1,465,813

Schedule of Distributions

The following table reflects the distributions per share that the Company has paid, including shares issued under the DRIP, on its common stock during the years ended September 30, 2025, 2024 and 2023:

Distribution	Date Declared	Record Date	Payment Date	Amount per Share		Cash Distribution			DRIP Shares Issued		DRIP Shares Value (3)
Quarterly	November 7, 2024	December 16, 2024	December 31, 2024	$	0.55	$	43.8	million	94,970	(1)	$	1.5	million
Quarterly	January 27, 2025	March 17, 2025	March 31, 2025	$	0.40	$	31.5	million	234,752	(1)	$	3.7	million
Supplemental	January 27, 2025	March 17, 2025	March 31, 2025	$	0.07	$	5.6	million	41,082	(1)	$	0.6	million
Quarterly	April 28, 2025	June 16, 2025	June 30, 2025	$	0.40	$	31.6	million	256,343	(1)	$	3.6	million
Supplemental	April 28, 2025	June 16, 2025	June 30, 2025	$	0.02	$	1.6	million	12,817	(1)	$	0.2	million
Quarterly	July 28, 2025	September 15, 2025	September 30, 2025	$	0.40	$	34.1	million	90,388	(1)	$	1.2	million
Total for the year ended September 30, 2025				$	1.84	$	148.2	million	730,352		$	10.7	million
Distribution	Date Declared	Record Date	Payment Date	Amount per Share		Cash Distribution			DRIP Shares Issued		DRIP Shares Value (3)
Quarterly	November 8, 2023	December 15, 2023	December 29, 2023	$	0.55	$	41.7	million	87,472	(2)	$	1.7	million
Special	November 8, 2023	December 15, 2023	December 29, 2023	$	0.07	$	5.3	million	11,133	(2)	$	0.2	million
Quarterly	January 26, 2024	March 15, 2024	March 29, 2024	$	0.55	$	42.8	million	96,850	(2)	$	1.9	million
Quarterly	April 26, 2024	June 14, 2024	June 28, 2024	$	0.55	$	43.3	million	100,029	(2)	$	1.9	million
Quarterly	July 26, 2024	September 16, 2024	September 30, 2024	$	0.55	$	43.7	million	94,873	(1)	$	1.6	million
Total for the year ended September 30, 2024				$	2.27	$	176.8	million	390,357		$	7.2	million
Distribution	Date Declared	Record Date	Payment Date	Amount per Share		Cash Distribution			DRIP Shares Issued		DRIP Shares Value (3)
Quarterly	November 10, 2022	December 15, 2022	December 30, 2022	$	0.54	$	32.0	million	53,369	(2)	$	1.1	million
Special	November 10, 2022	December 15, 2022	December 30, 2022	$	0.42	$	24.8	million	41,510	(2)	$	0.8	million
Quarterly	January 27, 2023	March 15, 2023	March 31, 2023	$	0.55	$	41.1	million	68,412	(1)	$	1.3	million
Quarterly	April 28, 2023	June 15, 2023	June 30, 2023	$	0.55	$	41.3	million	57,279	(1)	$	1.1	million
Quarterly	July 28, 2023	September 15, 2023	September 29, 2023	$	0.55	$	40.9	million	76,766	(2)	$	1.5	million
Total for the year ended September 30, 2023				$	2.61	$	180.0	million	297,336		$	5.9	million

 __________

(1) Shares were purchased on the open market and distributed.

(2) New shares were issued and distributed.

(3) Totals may not sum due to rounding.

Schedule of Common Stock Issued and Sold

In connection with the "at the market" offering, the Company issued and sold 168,055 shares of common stock during the year ended September 30, 2025 for net proceeds of $3.0 million (net of offering costs).

	Number of Shares Issued	Gross Proceeds		Placement Agent Fees		Net Proceeds (1)		Average Sales Price per Share (2)
"At the market" offering	168,055	$	2,987	$	26	$	2,960	$	17.77

(1) Net proceeds excludes offering costs of less than $0.1 million.

(2) Represents the gross sales price, including supplemental payments by Oaktree, before deducting placement agent fees and estimated offering expenses.

In connection with the "at the market" offering, the Company issued and sold 4,724,506 shares of common stock during the year ended September 30, 2024 for net proceeds of $92.5 million (net of offering costs).

	Number of Shares Issued	Gross Proceeds		Placement Agent Fees		Net Proceeds (1)		Average Sales Price per Share (2)
"At the market" offering	4,724,506	$	93,685	$	937	$	92,748	$	19.83

(1) Net proceeds excludes offering costs of $0.2 million.

(2) Represents the gross sales price before deducting placement agent fees and estimated offering expenses.

In connection with the "at the market" offering, the Company issued and sold 68,752 shares of common stock during the year ended September 30, 2023 for net proceeds of $1.3 million (net of offering costs).

	Number of Shares Issued	Gross Proceeds		Placement Agent Fees		Net Proceeds (1)		Average Sales Price per Share (2)
"At the market" offering	68,752	$	1,384	$	14	$	1,370	$	20.13

(1) Net proceeds excludes offering costs of $0.1 million.

(2) Represents the gross sales price before deducting placement agent fees and estimated offering expenses.