10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

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

For the quarterly period ended March 31, 2022

OR

☐ 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: 001-37351

National Storage Affiliates Trust

(Exact name of Registrant as specified in its charter)

 

Maryland	46-5053858
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

8400 East Prentice Avenue, 9th Floor

Greenwood Village, Colorado 80111

(Address of principal executive offices) (Zip code)

(720) 630-2600

(Registrant's telephone number including area code)

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

Title of each class	Trading symbols	Name of each exchange on which registered
Common Shares of Beneficial Interest, $0.01 par value per share	NSA	New York Stock Exchange
Series A Cumulative Redeemable Preferred Shares of Beneficial Interest, par value $0.01 per share	NSA Pr A	New York Stock Exchange

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 ☒  No ☐

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 (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).    Yes ☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, 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	☒	Accelerated Filer	☐
Non-accelerated Filer	☐	Smaller Reporting Company	☐
		Emerging Growth Company	☐

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. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    

Yes ☐  No ☒

As of May 4, 2022, 91,527,217 common shares of beneficial interest, $0.01 par value per share, were outstanding.

NATIONAL STORAGE AFFILIATES TRUST
TABLE OF CONTENTS
FORM 10-Q
		Page
PART I. FINANCIAL INFORMATION
ITEM 1.	Financial Statements	3
	Condensed Consolidated Balance Sheets as of March 31, 2022 and December 31, 2021 (Unaudited)	3
	Condensed Consolidated Statements of Operations for the Three Months Ended March 31, 2022 and 2021 (Unaudited)	4
	Condensed Consolidated Statements of Comprehensive Income (Loss) for the Three Months Ended March 31, 2022 and 2021 (Unaudited)	5
	Condensed Consolidated Statements of Changes in Equity for the Three Months Ended March 31, 2022 and 2021 (Unaudited)	6
	Condensed Consolidated Statements of Cash Flows for the Three Months Ended March 31, 2022 and 2021 (Unaudited)	8
	Notes to Condensed Consolidated Financial Statements (Unaudited)	10
ITEM 2.	Management's Discussion and Analysis of Financial Condition and Results of Operations	27
ITEM 3.	Quantitative and Qualitative Disclosures About Market Risk	43
ITEM 4.	Controls and Procedures	44
PART II. OTHER INFORMATION
ITEM 1.	Legal Proceedings	44
ITEM 1A.	Risk Factors	44
ITEM 2.	Unregistered Sales of Equity Securities and Use of Proceeds	44
ITEM 3.	Defaults Upon Senior Securities	45
ITEM 4.	Mine Safety Disclosures	45
ITEM 5.	Other Information	45
ITEM 6.	Exhibits	46
Signatures		47

2

PART I. FINANCIAL INFORMATION

ITEM 1. Financial Statements

NATIONAL STORAGE AFFILIATES TRUST

CONDENSED CONSOLIDATED BALANCE SHEETS

(dollars in thousands, except per share amounts)

(Unaudited)

	March 31,		December 31,
	2022		2021
ASSETS
Real estate
Self storage properties	$	5,892,406	$	5,798,188
Less accumulated depreciation	(624,368)		(578,717)
Self storage properties, net	5,268,038		5,219,471
Cash and cash equivalents	26,616		25,013
Restricted cash	2,531		2,862
Debt issuance costs, net	2,121		2,433
Investment in unconsolidated real estate ventures	184,547		188,187
Other assets, net	115,607		102,417
Operating lease right-of-use assets	21,951		22,211
Total assets	$	5,621,411	$	5,562,594
LIABILITIES AND EQUITY
Liabilities
Debt financing	$	2,999,751	$	2,940,931
Accounts payable and accrued liabilities	60,678		59,262
Interest rate swap liabilities	3,821		33,757
Operating lease liabilities	23,751		23,981
Deferred revenue	23,366		22,208
Total liabilities	3,111,367		3,080,139
Commitments and contingencies (Note 11)
Equity
Preferred shares of beneficial interest, par value $0.01 per share. 50,000,000 authorized, 8,744,935 and 8,736,719 issued and outstanding at March 31, 2022 and December 31, 2021, respectively, at liquidation preference	218,623		218,418
Common shares of beneficial interest, par value $0.01 per share. 250,000,000 authorized, 91,461,720 and 91,198,929 shares issued and outstanding at March 31, 2022 and December 31, 2021, respectively	915		912
Additional paid-in capital	1,830,732		1,866,773
Distributions in excess of earnings	(315,024)		(291,263)
Accumulated other comprehensive income (loss)	11,734		(19,611)
Total shareholders' equity	1,746,980		1,775,229
Noncontrolling interests	763,064		707,226
Total equity	2,510,044		2,482,455
Total liabilities and equity	$	5,621,411	$	5,562,594

See notes to condensed consolidated financial statements.

3

NATIONAL STORAGE AFFILIATES TRUST

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(in thousands, except per share amounts)

(Unaudited)

	Three Months Ended March 31,
	2022		2021
REVENUE
Rental revenue	$	174,469	$	113,127
Other property-related revenue	6,166		4,137
Management fees and other revenue	6,549		5,728
Total revenue	187,184		122,992
OPERATING EXPENSES
Property operating expenses	49,358		34,604
General and administrative expenses	13,966		11,238
Depreciation and amortization	58,072		32,424
Other	470		397
Total operating expenses	121,866		78,663
OTHER (EXPENSE) INCOME
Interest expense	(22,647)		(16,792)
Equity in earnings of unconsolidated real estate ventures	1,494		759
Acquisition costs	(553)		(292)
Non-operating expense	(112)		(173)
Gain on sale of self storage properties	2,134		—
Other expense	(19,684)		(16,498)
Income before income taxes	45,634		27,831
Income tax expense	(848)		(196)
Net income	44,786		27,635
Net income attributable to noncontrolling interests	(19,558)		(6,797)
Net income attributable to National Storage Affiliates Trust	25,228		20,838
Distributions to preferred shareholders	(3,279)		(3,275)
Net income attributable to common shareholders	$	21,949	$	17,563
Earnings (loss) per share - basic	$	0.24	$	0.24
Earnings (loss) per share - diluted	$	0.24	$	0.19
Weighted average shares outstanding - basic	91,323		71,794
Weighted average shares outstanding - diluted	91,323		123,187
Dividends declared per common share	$	0.50	$	0.35

See notes to condensed consolidated financial statements.

4

NATIONAL STORAGE AFFILIATES TRUST

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

(dollars in thousands)

(Unaudited)

	Three Months Ended March 31,
	2022		2021
Net income	$	44,786	$	27,635
Other comprehensive income
Unrealized gain on derivative contracts	38,608		20,900
Reclassification of other comprehensive loss to interest expense	4,974		4,957
Other comprehensive income	43,582		25,857
Comprehensive income	88,368		53,492
Comprehensive income attributable to noncontrolling interests	(32,341)		(14,814)
Comprehensive income attributable to National Storage Affiliates Trust	$	56,027	$	38,678

See notes to condensed consolidated financial statements.

5

NATIONAL STORAGE AFFILIATES TRUST

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY

(dollars in thousands, except number of shares)

(Unaudited)

											Accumulated
							Additional		Distributions		Other
	Preferred Shares			Common Shares			Paid-in		In Excess Of		Comprehensive		Noncontrolling		Total
	Number	Amount		Number	Amount		Capital		Earnings		(Loss) Income		Interests		Equity
Balances, December 31, 2020	8,732,719	$	218,318	71,293,117	$	713	$	1,050,714	$	(251,704)	$	(49,084)	$	461,518	$	1,430,475
OP equity issued for property acquisitions:
OP units and subordinated performance units, net of offering costs	—	—		—	—		—		—		—		22,897		22,897
Redemptions of OP units	—	—		190,248	2		2,332		—		(108)		(2,226)		—
Issuance of common shares, net of offering costs	—	—		3,692,216	37		122,375		—		—		—		122,412
Contributions from noncontrolling interests	—	—		—	—		—		—		—		103		103
Effect of changes in ownership for consolidated entities	—	—		—	—		(18,983)		—		(290)		19,273		—
Equity-based compensation expense	—	—		—	—		92		—		—		1,194		1,286
Issuance of restricted common shares	—	—		15,369	—		—		—		—		—		—
Vesting and forfeitures of restricted common shares, net	—	—		(4,823)	—		(152)		—		—		—		(152)
Preferred share dividends	—	—		—	—		—		(3,275)		—		—		(3,275)
Common share dividends	—	—		—	—		—		(25,014)		—		—		(25,014)
Distributions to noncontrolling interests	—	—		—	—		—		—		—		(20,604)		(20,604)
Other comprehensive income	—	—		—	—		—		—		17,840		8,017		25,857
Net income	—	—		—	—		—		20,838		—		6,797		27,635
Balances, March 31, 2021	8,732,719	$	218,318	75,186,127	$	752	$	1,156,378	$	(259,155)	$	(31,642)	$	496,969	$	1,581,620

See notes to condensed consolidated financial statements.

6

NATIONAL STORAGE AFFILIATES TRUST

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY

(dollars in thousands, except number of shares)

(Unaudited)

											Accumulated
							Additional		Distributions		Other
	Preferred Shares			Common Shares			Paid-in		In Excess Of		Comprehensive		Noncontrolling		Total
	Number	Amount		Number	Amount		Capital		Earnings		(Loss) Income		Interests		Equity
Balances, December 31, 2021	8,736,719	$	218,418	91,198,929	$	912	$	1,866,773	$	(291,263)	$	(19,611)	$	707,226	$	2,482,455
OP equity issued:
Internalization of PRO, net of offering costs	—	—		—	—		—		—		—		3,217		3,217
Acquisition of properties	—	—		—	—		—		—		—		16,576		16,576
Redemptions of OP units	—	—		258,477	3		4,601		—		(44)		(4,560)		—
Redemption of Series A-1 preferred units	8,216	205		—	—		—		—		—		(205)		—
Effect of changes in ownership for consolidated entities	—	—		—	—		(40,627)		—		590		40,037		—
Equity-based compensation expense	—	—		—	—		103		—		—		1,441		1,544
Issuance of restricted common shares	—	—		7,913	—		—		—		—		—		—
Vesting and forfeitures of restricted common shares, net	—	—		(3,599)	—		(118)		—		—		—		(118)
Preferred share dividends	—	—		—	—		—		(3,279)		—		—		(3,279)
Common share dividends	—	—		—	—		—		(45,710)		—		—		(45,710)
Distributions to noncontrolling interests	—	—		—	—		—		—		—		(33,009)		(33,009)
Other comprehensive income	—	—		—	—		—		—		30,799		12,783		43,582
Net income	—	—		—	—		—		25,228		—		19,558		44,786
Balances, March 31, 2022	8,744,935	$	218,623	91,461,720	$	915	$	1,830,732	$	(315,024)	$	11,734	$	763,064	$	2,510,044

See notes to condensed consolidated financial statements.

7

NATIONAL STORAGE AFFILIATES TRUST

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(dollars in thousands)

(Unaudited)

	Three Months Ended March 31,
	2022		2021
OPERATING ACTIVITIES
Net income	$	44,786	$	27,635
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	58,072		32,424
Amortization of debt issuance costs	1,043		806
Amortization of debt discount and premium, net	(172)		(177)
Gain on sale of self storage properties	(2,134)		—
Equity-based compensation expense	1,544		1,286
Equity in earnings of unconsolidated real estate ventures	(1,494)		(759)
Distributions from unconsolidated real estate ventures	5,135		4,015
Change in assets and liabilities, net of effects of self storage property acquisitions:
Other assets	(437)		686
Accounts payable and accrued liabilities	2,846		(3,037)
Deferred revenue	877		1,191
Net Cash Provided by Operating Activities	110,066		64,070
INVESTING ACTIVITIES
Acquisition of self storage properties	(75,098)		(141,175)
Capital expenditures	(8,213)		(5,685)
Deposits and advances for self storage property and other acquisitions	(6,000)		(2,530)
Expenditures for corporate furniture, equipment and other	(370)		(10)
Proceeds from sale of self storage properties	6,166		—
Net Cash Used In Investing Activities	(83,515)		(149,400)
FINANCING ACTIVITIES
Proceeds from issuance of common shares	—		122,412
Borrowings under debt financings	324,000		180,000
Contributions from noncontrolling interests	—		103
Principal payments under debt financings	(265,085)		(164,564)
Payment of dividends to common shareholders	(45,710)		(25,014)
Distributions to preferred shareholders	(3,279)		(3,275)
Distributions to noncontrolling interests	(33,277)		(20,730)
Debt issuance costs	(1,222)		(332)
Equity offering costs	(706)		(2,161)
Net Cash (Used In) Provided By Financing Activities	(25,279)		86,439
Increase in Cash, Cash Equivalents and Restricted Cash	1,272		1,109
CASH, CASH EQUIVALENTS AND RESTRICTED CASH
Beginning of period	27,875		21,701
End of period	$	29,147	$	22,810

See notes to condensed consolidated financial statements.

8

NATIONAL STORAGE AFFILIATES TRUST

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(dollars in thousands)

(Unaudited)

Supplemental Cash Flow and Noncash Information
Cash paid for interest	$	21,140	$	18,359
Consideration exchanged in investment activity
Issuance of OP Units and subordinated performance units	19,793		22,897
Deposits on acquisitions applied to purchase price	700		1,087
Other net liabilities assumed	332		1,138

See notes to condensed consolidated financial statements.

9

NATIONAL STORAGE AFFILIATES TRUST

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

March 31, 2022

(Unaudited)

1. ORGANIZATION AND NATURE OF OPERATIONS

National Storage Affiliates Trust was organized in the state of Maryland on May 16, 2013 and is a fully integrated, self-administered and self-managed real estate investment trust focused on the self storage sector. As used herein, "NSA," the "Company," "we," "our," and "us" refers to National Storage Affiliates Trust and its consolidated subsidiaries, except where the context indicates otherwise. The Company has elected and believes that it has qualified to be taxed as a real estate investment trust for U.S. federal income tax purposes ("REIT") commencing with its taxable year ended December 31, 2015.

Through its controlling interest as the sole general partner of NSA OP, LP (its "operating partnership"), a Delaware limited partnership formed on February 13, 2013, the Company is focused on the ownership, operation, and acquisition of self storage properties predominantly located within the top 100 metropolitan statistical areas throughout the United States. Pursuant to the Agreement of Limited Partnership (as amended, the "LP Agreement") of its operating partnership, the Company's operating partnership is authorized to issue preferred units, Class A Units ("OP units"), different series of Class B Units ("subordinated performance units"), and Long-Term Incentive Plan Units ("LTIP units"). The Company also owns certain of its self storage properties through other consolidated limited partnership subsidiaries of its operating partnership, which the Company refers to as "DownREIT partnerships." The DownREIT partnerships issue equity ownership interests that are intended to be economically equivalent to the Company's OP units ("DownREIT OP units") and subordinated performance units ("DownREIT subordinated performance units").

The Company owned 884 consolidated self storage properties in 39 states and Puerto Rico with approximately 55.7 million rentable square feet in approximately 433,000 storage units as of March 31, 2022. These properties are managed with local operational focus and expertise by the Company and its participating regional operators ("PROs"). As of March 31, 2022, the Company directly managed 510 of these self storage properties through its corporate brands of iStorage, SecurCare and Northwest, and the PROs managed the remaining 374 self storage properties. These PROs are Optivest Properties LLC and its controlled affiliates ("Optivest"), Guardian Storage Centers LLC and its controlled affiliates ("Guardian"), Move It Self Storage and its controlled affiliates ("Move It"), Arizona Mini Storage Management Company d/b/a Storage Solutions and its controlled affiliates ("Storage Solutions"), Hide-Away Storage Services, Inc. and its controlled affiliates ("Hide-Away"), an affiliate of Shader Brothers Corporation d/b/a Personal Mini Storage ("Personal Mini"), Southern Storage Management Systems, Inc. d/b/a Southern Self Storage ("Southern"), affiliates of Investment Real Estate Management, LLC d/b/a Moove In Self Storage of York, Pennsylvania ("Moove In") and Blue Sky Self Storage, a strategic partnership between Argus Professional Storage Management and GYS Development LLC ("Blue Sky").

Effective January 1, 2022, one of the Company's largest PROs, Kevin Howard Real Estate Inc., d/b/a Northwest Self Storage and its controlled affiliates ("Northwest"), retired as one of the Company's PROs. As a result of the retirement, on January 1, 2022, management of the Company's properties in the Northwest managed portfolio was transferred to the Company and the Northwest brand name and related intellectual property was internalized by the Company, and the Company discontinued payment of any supervisory and administrative fees or reimbursements to Northwest. In addition, on January 1, 2022, we issued a non-voluntary conversion notice to convert all subordinated performance units related to Northwest's managed portfolio into OP units. As part of the internalization, most of Northwest's employees were offered and provided employment by us and continue managing the same portfolio of properties as members of our existing property management platform. See Note 3 and Note 6 for additional information related to the Northwest retirement and internalization.

As of March 31, 2022, the Company also managed through its property management platform an additional portfolio of 177 properties owned by the Company's unconsolidated real estate ventures. These properties contain approximately 12.7 million rentable square feet, configured in approximately 104,000 storage units and located across 21 states. The Company owns a 25% equity interest in each of its unconsolidated real estate ventures.

As of March 31, 2022, in total, the Company operated and held ownership interests in 1,061 self storage properties located across 42 states and Puerto Rico with approximately 68.4 million rentable square feet in approximately 537,000 storage units.

10

2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation

The accompanying condensed consolidated financial statements are presented on the accrual basis of accounting in accordance with U.S. generally accepted accounting principles ("GAAP") and have been prepared by the Company pursuant to the rules and regulations of the Securities and Exchange Commission (the "SEC") regarding interim financial reporting. Accordingly, certain information and footnote disclosures required by GAAP for complete financial statements have been condensed or omitted in accordance with such rules and regulations. In the opinion of management, all adjustments (consisting of normal recurring adjustments) considered necessary for a fair presentation of the condensed consolidated financial statements have been included. The Company's results of operations for the quarterly and year to date periods are not necessarily indicative of the results to be expected for the full year or any other future period.

Principles of Consolidation

The Company's financial statements include the accounts of its operating partnership and its controlled subsidiaries. All significant intercompany balances and transactions have been eliminated in the consolidation of entities.

When the Company obtains an economic interest in an entity, the Company evaluates the entity to determine if the entity is deemed a variable interest entity ("VIE"), and if the Company is deemed to be the primary beneficiary, in accordance with authoritative guidance issued on the consolidation of VIEs. When an entity is not deemed to be a VIE, the Company considers the provisions of additional guidance to determine whether the general partner controls a limited partnership or similar entity when the limited partners have certain rights. The Company consolidates all entities that are VIEs and of which the Company is deemed to be the primary beneficiary. The Company has determined that its operating partnership is a VIE. The sole significant asset of National Storage Affiliates Trust is its investment in its operating partnership, and consequently, substantially all of the Company’s assets and liabilities represent those assets and liabilities of its operating partnership.

As of March 31, 2022, the Company's operating partnership was the primary beneficiary of, and therefore consolidated, 22 partnerships that are considered VIEs, which owned 48 self storage properties. As of December 31, 2021, the Company's operating partnership was the primary beneficiary of, and therefore consolidated, 22 partnerships that are considered VIEs, which owned 48 self storage properties. The net book value of the real estate owned by these VIEs was $421.4 million and $425.7 million as of March 31, 2022 and December 31, 2021, respectively. For certain DownREIT partnerships which are subject to fixed rate mortgages payable, the carrying value of such fixed rate mortgages payable held by these VIEs was $188.7 million and $188.7 million as of March 31, 2022 and December 31, 2021, respectively. The creditors of the consolidated VIEs do not have recourse to the Company's general credit.

Revenue Recognition

Rental revenue

Rental revenue consists of space rentals and related fees. Management has determined that all of the Company's leases are operating leases. Substantially all leases may be terminated on a month-to-month basis and rental income is recognized ratably over the lease term using the straight-line method. Rents received in advance are deferred and recognized on a straight-line basis over the related lease term associated with the prepayment. Promotional discounts and other incentives are recognized as a reduction to rental income over the applicable lease term.

Other property-related revenue

Other property-related revenue primarily consists of ancillary revenues such as tenant insurance and/or tenant warranty protection-related access fees, sales of storage supplies and truck rentals which are recognized in the period earned.

The Company and certain of the Company’s PROs have tenant insurance- and/or tenant warranty protection plan-related arrangements with insurance companies and the Company’s tenants. During the three months ended March 31, 2022 and 2021, the Company recognized $4.9 million and $3.1 million, respectively, of tenant insurance and tenant warranty protection plan revenues.

11

The Company sells boxes, packing supplies, locks, other retail merchandise and rents moving trucks at its properties. During the three months ended March 31, 2022 and 2021, the Company recognized retail sales of $0.6 million and $0.5 million, respectively.

Management fees and other revenue

Management fees and other revenue consist of property management fees, platform fees, call center fees, acquisition fees, amounts related to the facilitation of tenant warranty protection or tenant insurance programs for certain stores in the Company's consolidated portfolio and unconsolidated real estate ventures, access fees associated with tenant insurance-related arrangements, and profit distributions from the Company's interest in a reinsurance company.

With respect to both the 2018 Joint Venture and the 2016 Joint Venture (as each is defined in Note 5), the Company provides supervisory and administrative property management services, centralized call center services, and technology platform and revenue management services to the properties in the unconsolidated real estate ventures. The property management fees are equal to 6% of monthly gross revenues and net sales revenues from the assets of the unconsolidated real estate ventures, and the platform fees are equal to $1,250 per month per unconsolidated real estate venture property. With respect to the 2016 Joint Venture only, the call center fee is equal to 1% of each of monthly gross revenues and net sales revenues from the 2016 Joint Venture properties. During the three months ended March 31, 2022 and 2021, the Company recognized property management fees, call center fees and platform fees of $3.8 million and $3.5 million, respectively.

For acquisition fees, the Company provides sourcing, underwriting and administration services to the unconsolidated real estate ventures. The 2018 Joint Venture paid the Company a $4.0 million acquisition fee related to the initial acquisition of properties by the 2018 Joint Venture (the "Initial 2018 JV Portfolio") in 2018, at the time of the Initial 2018 JV Portfolio acquisition. This fee is refundable to the 2018 Joint Venture, on a prorated basis, if the Company is removed as the managing member during the initial four year life of the 2018 Joint Venture and as such, the Company's performance obligation for this acquisition fee is satisfied over a four year period. As of March 31, 2022 and December 31, 2021, the Company had deferred revenue related to the acquisition fee of $0.3 million and $0.5 million, respectively.

The Company also earns acquisition fees for properties acquired by the unconsolidated real estate ventures subsequent to the Initial 2016 JV Portfolio and the Initial 2018 JV Portfolio. These fees are based on a percentage of the gross capitalization of the acquired assets determined by the members of the 2016 Joint Venture and the 2018 Joint Venture, and are generally earned when the unconsolidated real estate ventures obtain title and control of an acquired property. During the three months ended March 31, 2022 and 2021, the Company recognized acquisition fees of $0.2 million and $0.2 million, respectively.

The Company provides or makes available tenant insurance or tenant warranty protection programs for tenants at its properties. For certain of the properties in the Company’s consolidated portfolio and one of its unconsolidated real estate ventures that participate in tenant insurance, the Company provides such tenant insurance through the Company’s wholly-owned captive insurance company and a separate reinsurance company in which the Company has a partial ownership interest. With respect to properties in both of the Company’s unconsolidated real estate ventures, the Company receives 50% of all proceeds from tenant insurance and tenant warranty protection programs at each unconsolidated real estate venture property in exchange for facilitating the programs at those properties. During the three months ended March 31, 2022 and 2021, the Company recognized $2.4 million and $1.9 million, respectively, of revenue related to these activities.

Gain on sale of self storage properties

The Company recognizes gains from disposition of facilities only upon closing in accordance with the guidance on sales of nonfinancial assets. Profit on real estate sold is recognized upon closing when all, or substantially all, of the promised consideration has been received and is nonrefundable and the Company has transferred control of the facilities to the purchaser.

Investments in Unconsolidated Real Estate Ventures

The Company’s investments in its unconsolidated real estate ventures are recorded under the equity method of accounting in the accompanying condensed consolidated financial statements. Under the equity method, the Company’s investments in unconsolidated real estate ventures are stated at cost and adjusted for the Company’s share of net earnings or losses and reduced by distributions. Equity in earnings (losses) is recognized based on the

12

Company’s ownership interest in the earnings (losses) of the unconsolidated real estate ventures. The Company follows the "nature of the distribution approach" for classification of distributions from its unconsolidated real estate ventures in its condensed consolidated statements of cash flows. Under this approach, distributions are reported on the basis of the nature of the activity or activities that generated the distributions as either a return on investment, which are classified as operating cash flows, or a return of investment (e.g., proceeds from the unconsolidated real estate ventures' sale of assets) which are reported as investing cash flows.

Noncontrolling Interests

All of the limited partner equity interests ("OP equity") in the operating partnership not held by the Company are reflected as noncontrolling interests. Noncontrolling interests also include ownership interests in DownREIT partnerships held by entities other than the operating partnership or its subsidiaries. In the condensed consolidated statements of operations, the Company allocates net income (loss) attributable to noncontrolling interests to arrive at net income (loss) attributable to National Storage Affiliates Trust.

For transactions that result in changes to the Company's ownership interest in its operating partnership, the carrying amount of noncontrolling interests is adjusted to reflect such changes. The difference between the fair value of the consideration received or paid and the amount by which the noncontrolling interest is adjusted is reflected as an adjustment to additional paid-in capital on the condensed consolidated balance sheets.

Allocation of Net Income (Loss)

The distribution rights and priorities set forth in the operating partnership's LP Agreement differ from what is reflected by the underlying percentage ownership interests of the unitholders. Accordingly, the Company allocates GAAP income (loss) utilizing the hypothetical liquidation at book value ("HLBV") method, in which the Company allocates income or loss based on the change in each unitholders’ claim on the net assets of its operating partnership at period end after adjusting for any distributions or contributions made during such period. The HLBV method is commonly applied to equity investments where cash distribution percentages vary at different points in time and are not directly linked to an equity holder’s ownership percentage.

The HLBV method is a balance sheet-focused approach to income (loss) allocation. A calculation is prepared at each balance sheet date to determine the amount that unitholders would receive if the operating partnership were to liquidate all of its assets (at GAAP net book value) and distribute the resulting proceeds to its creditors and unitholders based on the contractually defined liquidation priorities. The difference between the calculated liquidation distribution amounts at the beginning and the end of the reporting period, after adjusting for capital contributions and distributions, is used to derive each unitholder's share of the income (loss) for the period. Due to the stated liquidation priorities and because the HLBV method incorporates non-cash items such as depreciation expense, in any given period, income or loss may be allocated disproportionately to unitholders as compared to their respective ownership percentage in the operating partnership, and net income (loss) attributable to National Storage Affiliates Trust could be more or less net income than actual cash distributions received and more or less income or loss than what may be received in the event of an actual liquidation. Additionally, the HLBV method could result in net income (or net loss) attributable to National Storage Affiliates Trust during a period when the Company reports consolidated net loss (or net income), or net income (or net loss) attributable to National Storage Affiliates Trust in excess of the Company's consolidated net income (or net loss). The computations of basic and diluted earnings (loss) per share may be materially affected by these disproportionate income (loss) allocations, resulting in volatile fluctuations of basic and diluted earnings (loss) per share.

Other Comprehensive Income (Loss)

The Company has cash flow hedge derivative instruments that are measured at fair value with unrealized gains or losses recognized in other comprehensive income (loss) with a corresponding adjustment to accumulated other comprehensive income (loss) within equity, as discussed further in Note 12. Under the HLBV method of allocating income (loss) discussed above, a calculation is prepared at each balance sheet date by applying the HLBV method including, and excluding, the assets and liabilities resulting from the Company's cash flow hedge derivative instruments to determine comprehensive income (loss) attributable to National Storage Affiliates Trust. As a result of the distribution rights and priorities set forth in the operating partnership's LP Agreement, in any given period, other comprehensive income (loss) may be allocated disproportionately to unitholders as compared to their respective ownership percentage in the operating partnership and as compared to their respective allocation of net income (loss).

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Restricted Cash

The Company's restricted cash consists of escrowed funds deposited with financial institutions for real estate taxes, insurance and other reserves for capital improvements in accordance with the Company's loan agreements.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

3. SHAREHOLDERS' EQUITY AND NONCONTROLLING INTERESTS

Shareholders' Equity

At the Market ("ATM") Program

On February 27, 2019, the Company entered into a sales agreement with certain sales agents, pursuant to which the Company may sell from time to time up to an aggregate of $250.0 million of common shares of beneficial interest, $0.01 par value per share of the Company ("common shares") and 6.000% Series A cumulative redeemable preferred shares of beneficial interest ("Series A preferred shares") in sales deemed to be "at the market" offerings (the "sales agreement"). On May 19, 2021, the Company entered into an amendment to the sales agreement with certain sales agents, whereby the Company increased the aggregate gross sale price under the program to $400.0 million, which included $31.0 million of the remaining available offered shares. The sales agreement contemplates that, in addition to the issuance and sale by the Company of offered shares to or through the sale agents, the Company may enter into separate forward sale agreements with any forward purchaser. Forward sale agreements, if any, will include only the Company's common shares and will not include any Series A preferred shares. If the Company enters into a forward sale agreement with any forward purchaser, such forward purchaser will attempt to borrow from third parties and sell, through the related agent, acting as sales agent for such forward purchaser (each, a "forward seller"), offered shares, in an amount equal to the offered shares subject to such forward sale agreement, to hedge such forward purchaser’s exposure under such forward sale agreement. The Company may offer the common shares and Series A preferred shares through the agents, as the Company's sales agents, or, as applicable, as forward seller, or directly to the agents or forward sellers, acting as principals, by means of, among others, ordinary brokers’ transactions on the NYSE or otherwise at market prices prevailing at the time of sale or at negotiated prices.

During the three months ended March 31, 2022, the Company did not sell any common shares through the ATM program. As of March 31, 2022, the Company had $169.1 million of capacity remaining under its ATM Program.

Noncontrolling Interests

All of the OP equity in the Company's operating partnership not held by the Company are reflected as noncontrolling interests. Noncontrolling interests also include ownership interests in DownREIT partnerships held by entities other than the Company's operating partnership. NSA is the general partner of its operating partnership and is authorized to cause its operating partnership to issue additional partner interests, including OP units and subordinated performance units, at such prices and on such other terms as it determines in its sole discretion.

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As of March 31, 2022 and December 31, 2021, units reflecting noncontrolling interests consisted of the following:

	March 31, 2022	December 31, 2021
Series A-1 preferred units	984,861	640,047
OP units	35,385,718	31,893,105
Subordinated performance units	7,853,367	9,754,482
LTIP units	769,430	775,447
DownREIT units
DownREIT OP units	1,924,918	1,924,918
DownREIT subordinated performance units	4,337,111	4,337,111
Total	51,255,405	49,325,110

Series A-1 Preferred Units

The 6.000% Series A-1 Cumulative Redeemable Preferred Units ("Series A-1 preferred units") rank senior to OP units and subordinated performance units in the Company's operating partnership with respect to distributions and liquidation. The Series A-1 preferred units have a stated value of $25.00 per unit and receive distributions at an annual rate of 6.000%. These distributions are cumulative. The Series A-1 preferred units are redeemable at the option of the holder after the first anniversary of the date of issuance, which redemption obligations may be satisfied at the Company’s option in cash in an amount equal to the market value of an equivalent number of the Series A preferred shares or the issuance of Series A preferred shares on a one-for-one basis, subject to adjustments. The Series A preferred shares are redeemable by the Company for a cash redemption price of $25.00 per share, plus accrued but unpaid dividends beginning in October 2022. The increase in Series A-1 preferred units outstanding from December 31, 2021 to March 31, 2022 was due to the issuance of 353,030 Series A-1 preferred units in connection with the acquisition of self storage properties, partially offset by the redemption of 8,216 Series A-1 preferred units for an equal number of Series A preferred shares.

OP Units and DownREIT OP units

OP units in the Company's operating partnership are redeemable for cash or, at the Company's option, exchangeable for the Company's common shares on a one-for-one basis, and DownREIT OP units are redeemable for cash or, at the Company's option, exchangeable for OP units in its operating partnership on a one-for-one basis, subject to certain adjustments in each case. The holders of OP units are generally not entitled to elect redemption until one year after the issuance of the OP units. The holders of DownREIT OP units are generally not entitled to elect redemption until five years after the date of the contributor's initial contribution.

The increase in OP units outstanding from December 31, 2021 to March 31, 2022 was due to (i) 3,911,260 OP units issued upon the non-voluntary conversion of 2,078,357 subordinated performance units (as discussed further below) in connection with Northwest's retirement, (ii) 235,241 OP units issued upon the voluntary conversion of 82,611 subordinated performance units, (iii) the conversion of 117,216 LTIP units into an equivalent number of OP units, (iv) the issuance of 92,567 OP units in connection with the acquisition of self storage properties, and (v) the issuance of 46,540 OP units in connection with the acquisition of Northwest's rights to property management contracts, brand, intellectual property, and certain tangible assets, partially offset by the conversion of 651,734 OP units into 244,792 subordinated performance units, and the redemption of 258,477 OP units for an equal number of common shares.

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Subordinated Performance Units and DownREIT Subordinated Performance Units

Subordinated performance units may also, under certain circumstances, be convertible into OP units which are exchangeable for common shares as described above, and DownREIT subordinated performance units may, under certain circumstances, be exchangeable for subordinated performance units on a one-for-one basis. Subordinated performance units are only convertible into OP units after a two year lock-out period and then generally (i) at the holder’s election only upon the achievement of certain performance thresholds relating to the properties to which such subordinated performance units relate or (ii) at the Company's election upon a retirement event of a PRO that holds such subordinated performance units or upon certain qualifying terminations. The holders of DownREIT subordinated performance units are generally not entitled to elect redemption until at least five years after the date of the contributor's initial contribution.

Following such lock-out period, a holder of subordinated performance units in the Company's operating partnership may elect a voluntary conversion one time each year on or prior to December 1st to convert a pre-determined portion of such subordinated performance units into OP units in the Company's operating partnership, with such conversion effective January 1st of the following year, with each subordinated performance unit being converted into the number of OP units determined by dividing the average cash available for distribution, or CAD, per unit on the series of specific subordinated performance units over the one-year period prior to conversion by 110% of the CAD per unit on the OP units determined over the same period. CAD per unit on the series of specific subordinated performance units and OP units is determined by the Company based generally upon the application of the provisions of the LP Agreement applicable to the distributions of operating cash flow and capital transactions proceeds.

The decrease in subordinated performance units outstanding from December 31, 2021 to March 31, 2022 was due to the conversion of 2,078,357 subordinated performance units into 3,911,260 OP units in connection with the retirement of Northwest, and the voluntary conversion of 82,611 subordinated performance units into 235,241 OP units, partially offset by the issuance of 244,792 subordinated performance units upon conversion of 651,234 OP units, and the issuance of 15,061 subordinated performance units for co-investment by the Company's PROs in connection with the acquisition of self storage properties.

LTIP Units

LTIP units are a special class of partnership interest in the Company's operating partnership that allow the holder to participate in the ordinary and liquidating distributions received by holders of the OP units (subject to the achievement of specified levels of profitability by the Company's operating partnership or the achievement of certain events). LTIP units may also, under certain circumstances, be convertible into OP units on a one-for-one basis, which are then exchangeable for common shares as described above.

The decrease in LTIP units outstanding from December 31, 2021 to March 31, 2022 was due to the conversion of 117,216 LTIP units into an equivalent number of OP units, partially offset by the issuance of 111,199 compensatory LTIP units to employees, net of forfeitures.

4. SELF STORAGE PROPERTIES

Self storage properties are summarized as follows (dollars in thousands):

	March 31, 2022		December 31, 2021
Land	$	1,044,317	$	1,028,431
Buildings and improvements	4,838,336		4,760,567
Furniture and equipment	9,753		9,190
Total self storage properties	5,892,406		5,798,188
Less accumulated depreciation	(624,368)		(578,717)
Self storage properties, net	$	5,268,038	$	5,219,471

Depreciation expense related to self storage properties amounted to $46.7 million and $29.4 million during the three months ended March 31, 2022 and 2021, respectively.

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5. INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES

2018 Joint Venture

As of March 31, 2022, the Company's unconsolidated real estate venture, formed in September 2018 with an affiliate of Heitman America Real Estate REIT LLC (the "2018 Joint Venture"), owned and operated a portfolio of 103 self storage properties containing approximately 7.8 million rentable square feet, configured in approximately 64,000 storage units and located across 17 states.

2016 Joint Venture

As of March 31, 2022, the Company's unconsolidated real estate venture, formed in September 2016 with a state pension fund advised by Heitman Capital Management LLC (the "2016 Joint Venture"), owned and operated a portfolio of 74 properties containing approximately 4.9 million rentable square feet, configured in approximately 40,000 storage units and located across 13 states.

The following table presents the combined condensed financial position of the Company's unconsolidated real estate ventures as of March 31, 2022 and December 31, 2021 (in thousands):

	March 31, 2022		December 31, 2021
ASSETS
Self storage properties, net	$	1,727,229	$	1,741,538
Other assets	26,309		23,562
Total assets	$	1,753,538	$	1,765,100
LIABILITIES AND EQUITY
Debt financing	$	1,001,608	$	1,001,378
Other liabilities	22,321		19,493
Equity	729,609		744,229
Total liabilities and equity	$	1,753,538	$	1,765,100

The following tables present the combined condensed operating information of the Company's unconsolidated real estate ventures for the three months ended March 31, 2022 and 2021 (in thousands):

	Three Months Ended March 31,
	2022		2021
Total revenue	$	48,998	$	43,695
Property operating expenses	13,809		11,788
Net operating income	35,189		31,907
Supervisory, administrative and other expenses	(3,202)		(2,882)
Depreciation and amortization	(15,382)		(15,522)
Interest expense	(10,410)		(10,405)
Acquisition and other expenses	(274)		(121)
Net income	$	5,921	$	2,977

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6. ACQUISITIONS AND DISPOSITIONS

Acquisitions

The Company acquired 12 self storage properties for $92.9 million during the three months ended March 31, 2022. Of these acquisitions, one self storage property totaling $6.6 million was acquired by the Company from one of its PROs. The 12 self storage property acquisitions were accounted for as asset acquisitions and accordingly, $1.0 million of transaction costs related to the acquisitions were capitalized as part of the basis of the acquired properties. The Company recognized the estimated fair value of the acquired assets and assumed liabilities on the respective dates of such acquisitions. The Company allocated the total purchase price to the estimated fair value of tangible and intangible assets acquired and liabilities assumed. The Company allocated a portion of the purchase price to identifiable intangible assets consisting of customer in-place leases which were recorded at an estimated value of $1.7 million, resulting in a total value of $91.2 million allocated to real estate.

The following table summarizes the investment in self storage property acquisitions completed by the Company during the three months ended March 31, 2022 (dollars in thousands):

Acquisitions Closed During the Three Months Ended:	Number of Properties	Summary of Investment
		Cash and Acquisition Costs		Value of OP Equity(1)		Other Liabilities		Total
March 31, 2022	12	$	76,027	$	16,576	$	332	$	92,935

(1)Value of OP equity represents the fair value of OP units, subordinated performance units, and Series A-1 preferred units.

During the three months ended March 31, 2022, in connection with the retirement of Northwest as a PRO as discussed in Note 1 and Note 3, the Company acquired Northwest's rights to its asset management agreements, the Northwest brand, intellectual property, and certain tangible assets for $3.2 million, which was paid for by the issuance of 46,540 OP units.

Dispositions

During the three months ended March 31, 2022, the Company disposed of one self storage property and an undeveloped land parcel for net proceeds of $6.2 million. The Company recorded a net gain on the dispositions of $2.1 million.

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7. OTHER ASSETS

Other assets consist of the following (dollars in thousands):

	March 31, 2022		December 31, 2021
Customer in-place leases, net of accumulated amortization of $21,104 and $14,336, respectively	$	20,480	$	29,427
Receivables:
Trade, net	6,466		6,228
PROs and other affiliates	1,781		2,878
Receivables from unconsolidated real estate ventures	5,951		4,028
Property acquisition and other deposits	6,100		800
Interest rate swaps	13,646		—
Prepaid expenses and other	8,796		9,552
Corporate furniture, equipment and other, net	1,478		1,422
Trade names	7,442		6,380
Management contracts, net of accumulated amortization of $4,522 and $4,237, respectively	12,989		10,983
Tenant reinsurance intangible, net of accumulated amortization of $1,745 and $1,504, respectively	22,296		22,537
Goodwill	8,182		8,182
Total	$	115,607	$	102,417

Amortization expense related to customer in-place leases amounted to $10.7 million and $2.4 million for the three months ended March 31, 2022 and 2021, respectively. Amortization expense related to management contracts amounted to $0.2 million and $0.3 million for the three months ended March 31, 2022 and 2021, respectively. Amortization expense related to the tenant reinsurance intangible amounted to $0.2 million and $0.1 million for the three months ended March 31, 2022 and 2021, respectively.

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8. DEBT FINANCING

The Company's outstanding debt as of March 31, 2022 and December 31, 2021 is summarized as follows (dollars in thousands):

	Interest Rate(1)	March 31, 2022		December 31, 2021
Credit Facility:
Revolving line of credit	1.70%	$	425,000	$	490,000
Term loan A	3.69%	125,000		125,000
Term loan B	2.86%	250,000		250,000
Term loan C	2.86%	225,000		225,000
Term loan D	3.07%	175,000		175,000
Term loan E	1.60%	125,000		125,000
2023 Term loan facility	2.83%	175,000		175,000
2028 Term loan facility	4.62%	75,000		75,000
2029 Term loan facility	4.27%	100,000		100,000
2026 Senior Unsecured Notes	2.16%	35,000		35,000
2029 Senior Unsecured Notes	3.98%	100,000		100,000
August 2030 Senior Unsecured Notes	2.99%	150,000		150,000
November 2030 Senior Unsecured Notes	2.72%	75,000		75,000
May 2031 Senior Unsecured Notes	3.00%	90,000		90,000
August 2031 Senior Unsecured Notes	4.08%	50,000		50,000
November 2031 Senior Unsecured Notes	2.81%	175,000		175,000
2032 Senior Unsecured Notes	3.09%	100,000		100,000
May 2033 Senior Unsecured Notes	3.10%	55,000		55,000
November 2033 Senior Unsecured Notes	2.96%	125,000		—
2036 Senior Unsecured Notes	3.06%	75,000		75,000
Fixed rate mortgages payable	3.82%	302,860		303,944
Total principal		3,007,860		2,948,944
Unamortized debt issuance costs and debt premium, net		(8,109)		(8,013)
Total debt		$	2,999,751	$	2,940,931

(1)Represents the effective interest rate as of March 31, 2022. Effective interest rate incorporates the stated rate plus the impact of interest rate cash flow hedges and discount and premium amortization, if applicable. For the revolving line of credit, the effective interest rate excludes fees for unused borrowings.

As of March 31, 2022, the Company's unsecured credit facility provided for total borrowings of $1.550 billion (the "credit facility") consisting of the following components: (i) a revolving line of credit (the "Revolver") which provides for a total borrowing commitment up to $650.0 million, under which the Company may borrow, repay and re-borrow amounts, (ii) a $125.0 million tranche A term loan facility (the "Term Loan A"), (iii) a $250.0 million tranche B term loan facility (the "Term Loan B"), (iv) a $225.0 million tranche C term loan facility (the "Term Loan C"), (v) a $175.0 million tranche D term loan facility (the "Term Loan D") and (vi) a $125.0 million tranche E term loan facility (the "Term Loan E"). As of March 31, 2022, the Company had an expansion option under the credit facility, which, if exercised in full, would provide for a total credit facility of $1.750 billion.

As of March 31, 2022, the Company had outstanding letters of credit totaling $5.7 million and would have had the capacity to borrow remaining Revolver commitments of $219.3 million while remaining in compliance with the credit facility's financial covenants. At March 31, 2022, the Company was in compliance with all such covenants.

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November 2030, November 2031, November 2033 and 2036 Senior Unsecured Notes

On November 9, 2021, the operating partnership as issuer, and the Company, entered into a Note Purchase Agreement (the "November 2021 Note Purchase Agreement") which provides for the private placement of $75.0 million of 2.72% senior unsecured notes due November 30, 2030 (the "November 2030 Notes"), $175.0 million of 2.81% senior unsecured notes due November 30, 2031 (the "November 2031 Notes"), $125.0 million of 2.96% senior unsecured notes due November 30, 2033 (the "November 2033 Notes") and $75.0 million of 3.06% senior unsecured notes due November 30, 2036 (the "2036 Notes" and together with the November 2030 Notes, November 2031 Notes, and November 2033 Notes, the "November 2021 Senior Unsecured Notes") to certain institutional investors. The November 2021 Senior Unsecured Notes are governed by the November 2021 Note Purchase Agreement. On December 14, 2021 the operating partnership issued the November 2030 Notes, November 2031 Notes and the 2036 Notes. On January 28, 2022 the operating partnership issued the November 2033 Notes.

Future Debt Obligations

Based on existing debt agreements in effect as of March 31, 2022, the scheduled principal and maturity payments for the Company's outstanding borrowings are presented in the table below (in thousands):

Year Ending December 31,	Scheduled Principal and Maturity Payments		Amortization of Premium and Unamortized Debt Issuance Costs		Total
Remainder of 2022	$	3,289	$	(1,709)	$	1,580
2023	376,813		(1,925)		374,888
2024	696,964		(1,553)		695,411
2025	227,185		(977)		226,208
2026	212,322		(814)		211,508
2027	212,369		(483)		211,886
Thereafter	1,278,918		(648)		1,278,270
	$	3,007,860	$	(8,109)	$	2,999,751

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9. EARNINGS PER SHARE

The following table sets forth the computation of basic and diluted earnings (loss) per common share for the three months ended March 31, 2022 and 2021 (in thousands, except per share amounts):

	Three Months Ended March 31,
	2022		2021
Earnings (loss) per common share - basic and diluted
Numerator
Net income	$	44,786	$	27,635
Net income attributable to noncontrolling interests	(19,558)		(6,797)
Net income attributable to National Storage Affiliates Trust	25,228		20,838
Distributions to preferred shareholders	(3,279)		(3,275)
Distributed and undistributed earnings allocated to participating securities	(14)		(11)
Net income attributable to common shareholders - basic	21,935		17,552
Effect of assumed conversion of dilutive securities	—		6,452
Net income attributable to common shareholders - diluted	$	21,935	$	24,004
Denominator
Weighted average shares outstanding - basic	91,323		71,794
Effect of dilutive securities:
Weighted average effect of outstanding forward offering agreement	—		399
Weighted average OP units outstanding	—		29,751
Weighted average DownREIT OP unit equivalents outstanding	—		1,925
Weighted average LTIP units outstanding	—		133
Weighted average subordinated performance units and DownREIT subordinated performance unit equivalents	—		19,185
Weighted average shares outstanding - diluted	91,323		123,187
Earnings (loss) per share - basic	$	0.24	$	0.24
Earnings (loss) per share - diluted	$	0.24	$	0.19

As discussed in Note 2, the Company allocates GAAP income (loss) utilizing the HLBV method, in which the Company allocates income or loss based on the change in each unitholders' claim on the net assets of its operating partnership at period end after adjusting for any distributions or contributions made during such period. Due to the stated liquidation priorities and because the HLBV method incorporates non-cash items such as depreciation expense, in any given period, income or loss may be allocated disproportionately to National Storage Affiliates Trust and noncontrolling interests, resulting in volatile fluctuations of basic and diluted earnings (loss) per share.

Outstanding equity interests of the Company's operating partnership and DownREIT partnerships are considered potential common shares for purposes of calculating diluted earnings (loss) per share as the unitholders may, through the exercise of redemption rights, obtain common shares, subject to various restrictions. Basic earnings per share is calculated based on the weighted average number of common shares outstanding during the period. Diluted earnings per share is calculated by further adjusting for the dilutive impact using the treasury stock method for unvested LTIP units subject to a service condition outstanding during the period and the if-converted method for any convertible securities outstanding during the period.

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Generally, following certain lock-out periods, OP units in the Company's operating partnership are redeemable for cash or, at the Company's option, exchangeable for common shares on a one-for-one basis, subject to certain adjustments and DownREIT OP units are redeemable for cash or, at the Company's option, exchangeable for OP units in its operating partnership on a one-for-one basis, subject to certain adjustments in each case.

LTIP units may also, under certain circumstances, be convertible into OP units on a one-for-one basis, which are then exchangeable for common shares as described above. Certain LTIP units vested prior to or upon the completion of the Company's initial public offering and certain LTIP units have vested upon the satisfaction of a service or market condition or will vest upon the satisfaction of future service and market conditions. Vested LTIP units and unvested LTIP units that vest based on a service or market condition are allocated income or loss in a similar manner as OP units. Unvested LTIP units subject to a service or market condition are evaluated for dilution using the treasury stock method. For the three months ended March 31, 2022, 413,111 unvested LTIP units that vest based on a service or market condition are excluded from the calculation of diluted earnings (loss) per share as they are not dilutive to earnings (loss) per share. For the three months ended March 31, 2022, 252,894 LTIP units that vest upon the future acquisition of properties are excluded from the calculation of diluted earnings (loss) per share because the contingency for the units to vest has not been attained as of the end of the reported period.

Subordinated performance units may also, under certain circumstances, be convertible into OP units which are exchangeable for common shares as described above, and DownREIT subordinated performance units may, under certain circumstances, be exchangeable for subordinated performance units on a one-for-one basis. Subordinated performance units are only convertible into OP units, after a two year lock-out period and then generally (i) at the holder’s election only upon the achievement of certain performance thresholds relating to the properties to which such subordinated performance units relate or (ii) at the Company's election upon a retirement event of a PRO that holds such subordinated performance units or upon certain qualifying terminations. Although subordinated performance units may only be convertible after a two year lock-out period, the Company assumes a hypothetical conversion of each subordinated performance unit (including each DownREIT subordinated performance unit) into OP units (with subsequently assumed redemption into common shares) for the purposes of calculating diluted weighted average common shares. This hypothetical conversion is calculated using historical financial information, and as a result, is not necessarily indicative of the results of operations, cash flows or financial position of the Company upon expiration of the two-year lock out period on conversions.

For the three months ended March 31, 2022, potential common shares totaling 58.3 million related to OP units, DownREIT OP units, subordinated performance units, DownREIT subordinated performance units and vested LTIP units have been excluded from the calculation of diluted earnings (loss) per share as they are not dilutive to earnings (loss) per share.

Participating securities, which consist of unvested restricted common shares, receive dividends equal to those received by common shares. The effect of participating securities for the periods presented above is calculated using the two-class method of allocating distributed and undistributed earnings.

10. RELATED PARTY TRANSACTIONS

Supervisory and Administrative Fees

For the self storage properties that are managed by the PROs, the Company has entered into asset management agreements with the PROs to provide leasing, operating, supervisory and administrative services. The asset management agreements generally provide for fees ranging from 5% to 6% of gross revenue for the managed self storage properties. During the three months ended March 31, 2022 and 2021, the Company incurred $5.3 million and $4.2 million, respectively, for supervisory and administrative fees to the PROs. Such fees are included in general and administrative expenses in the accompanying condensed consolidated statements of operations.

Payroll Services

For the self storage properties that are managed by the PROs, the employees responsible for operations are employees of the PROs who charge the Company for the costs associated with the respective employees. For the three months ended March 31, 2022 and 2021, the Company incurred $7.0 million and $6.4 million, respectively, for payroll and related costs reimbursable to these PROs. Such costs are included in property operating expenses in the accompanying condensed consolidated statements of operations.

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Due Diligence Costs

During the three months ended March 31, 2022 and 2021, the Company incurred $0.2 million and $0.3 million of expenses payable to certain PROs related to self storage property acquisitions sourced by the PROs. These expenses, which are based on the volume of transactions sourced by the PROs, are intended to reimburse the PROs for due diligence costs incurred in the sourcing and underwriting process. These due diligence costs are capitalized as part of the basis of the acquired self storage properties.

PRO Retirement

In connection with the retirement of Northwest as a PRO as discussed in Note 1, Note 3, and Note 6, effective as of January 1, 2022, 2,078,357 Series NW subordinated performance units converted into 3,911,260 OP units as a non-voluntary conversion. Of these, (i) a company owned and controlled by J. Timothy Warren, a trustee of the Company, received 13,213 OP units with a value of $0.9 million upon conversion of 7,021 Series NW subordinated performance units and (ii) a company controlled by J. Timothy Warren, but owned by Mr. Warren's adult children, received 295,739 OP units with a value of $20.5 million upon the conversion of 157,149 Series NW subordinated performance units.

11. COMMITMENTS AND CONTINGENCIES

Legal Proceedings

The Company is subject to litigation, claims, and assessments that may arise in the ordinary course of its business activities. Such matters include contractual matters, employment related issues, and regulatory proceedings. Although occasional adverse decisions or settlements may occur, the Company believes that the final disposition of such matters will not have a material adverse effect on the Company's financial position, results of operations, or liquidity.

12. FAIR VALUE MEASUREMENTS

Recurring Fair Value Measurements

The Company sometimes limits its exposure to interest rate fluctuations by entering into interest rate swap agreements. The interest rate swap agreements moderate the Company's exposure to interest rate risk by effectively converting the interest on variable rate debt to a fixed rate. The Company measures its interest rate swap derivatives at fair value on a recurring basis. The changes in the fair value of derivatives designated and that qualify as cash flow hedges are recorded in accumulated other comprehensive income (loss) and are subsequently reclassified into earnings in the period that the hedged transaction affects earnings.

Information regarding the Company's interest rate swaps measured at fair value, which are classified within Level 2 of the GAAP fair value hierarchy, is presented below (dollars in thousands):

				Fair Value
	Number of Contracts	Notional Amount		Other Assets, net		Interest Rate Swap Liabilities
As of March 31, 2022
Interest Rate Swaps	19	$	1,125,000	$	13,646	$	3,821
As of December 31, 2021
Interest Rate Swaps	19	$	1,125,000	$	—	$	33,757

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The following table presents the effect of our derivative instruments on our consolidated financial statements (dollars in thousands):

Fair value at December 31, 2020	$	(77,918)
Swap ineffectiveness	17
Losses on interest rate swaps reclassified into interest expense from accumulated other comprehensive loss	4,957
Unrealized losses on interest rate swaps included in accumulated other comprehensive (loss) income	20,900
Fair value at March 31, 2021	$	(52,044)
Fair value at December 31, 2021	$	(33,757)
Losses on interest rate swaps reclassified into interest expense from accumulated other comprehensive income	4,974
Unrealized gains on interest rate swaps included in accumulated other comprehensive (loss) income	38,608
Fair value at March 31, 2022	$	9,825

As of March 31, 2022 and December 31, 2021, the Company had outstanding interest rate swaps with aggregate notional amounts of $1,125.0 million and $1,125.0 million, respectively, designated as cash flow hedges. As of March 31, 2022, the Company's swaps had a weighted average remaining term of approximately 2.6 years. The fair value of these swaps are presented as interest rate swap assets and liabilities in the Company's balance sheets, and the Company recognizes any changes in the fair value as an adjustment of accumulated other comprehensive income (loss) within equity. If the forward rates at March 31, 2022 remain constant, the Company estimates that during the next 12 months, the Company would reclassify into earnings approximately $2.7 million of the unrealized losses and approximately $1.1 of the unrealized gains included in accumulated other comprehensive income (loss).

There were no transfers between levels of the three-tier fair value measurement hierarchy during the three months ended March 31, 2022 and 2021. For financial assets and liabilities that utilize Level 2 inputs, the Company utilizes both direct and indirect observable price quotes, including LIBOR yield curves. The Company uses valuation techniques for Level 2 financial assets and liabilities which include LIBOR yield curves at the reporting date as well as assessing counterparty credit risk. Counterparties to these contracts are highly rated financial institutions. Although the Company has determined that the majority of the inputs used to value its derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with the Company's derivatives utilize Level 3 inputs, such as estimates of current credit spreads, to evaluate the likelihood of default by the Company and the counterparties. As of March 31, 2022, the Company determined that the effect of credit valuation adjustments on the overall valuation of its derivative positions are not significant to the overall valuation of its derivatives. Therefore, the Company has determined that its derivative valuations are appropriately classified in Level 2 of the fair value hierarchy.

Fair Value Disclosures

The carrying values of cash and cash equivalents, restricted cash, trade receivables, and accounts payable and accrued liabilities reflected in the balance sheets at March 31, 2022 and December 31, 2021, approximate fair value due to the short term nature of these financial assets and liabilities. The carrying value of variable rate debt financing reflected in the balance sheets at March 31, 2022 and December 31, 2021 approximates fair value as the changes in their associated interest rates reflect the current market and credit risk is similar to when the loans were originally obtained.

The fair values of fixed rate private placement notes and mortgages were estimated using the discounted estimated future cash payments to be made on such debt; the discount rates used approximated current market rates for loans, or groups of loans, with similar maturities and credit quality (categorized within Level 2 of the fair value hierarchy). The combined principal balance of the Company’s fixed rate private placement notes was approximately $1.03 billion as of March 31, 2022, with a fair value of approximately $961.9 million. In determining the fair value, the Company estimated a weighted average market interest rate of approximately 3.96%, compared to the weighted

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average contractual interest rate of 3.08%. The combined principal balance of the Company’s fixed rate private placement notes was approximately $905.0 million as of December 31, 2021, with a fair value of approximately $931.1 million. In determining the fair value, the Company estimated a weighted average market interest rate of approximately 2.81%, compared to the weighted average contractual interest rate of 3.09%. The combined principal balance of the Company's fixed rate mortgages payable was approximately $302.9 million as of March 31, 2022 with a fair value of approximately $301.8 million . In determining the fair value, the Company estimated a weighted average market interest rate of approximately 4.03%, compared to the weighted average contractual interest rate of 4.11%. The combined principal balance of the Company's fixed rate mortgages was approximately $303.9 million as of December 31, 2021 with a fair value of approximately $319.9 million. In determining the fair value as of December 31, 2021, the Company estimated a weighted average market interest rate of approximately 2.55%, compared to the weighted average contractual interest rate of 4.12%.

13. SUBSEQUENT EVENTS

Self Storage Property Acquisitions

On April 12, 2022, the 2016 Joint Venture acquired seven self storage properties for approximately $208.0 million. The 2016 Joint Venture financed the acquisition with capital contributions from venture members, of which the Company contributed approximately $52.0 million.

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ITEM 2. Management's Discussion and Analysis of Financial Condition and Results of Operations

Forward-Looking Statements

We make forward-looking statements in this report that are subject to risks and uncertainties. These forward-looking statements include information about possible or assumed future results of our business, financial condition, liquidity, results of operations, plans and objectives. When we use the words "believe," "expect," "anticipate," "estimate," "plan," "continue," "intend," "should," "may," or similar expressions, we intend to identify forward-looking statements.

The forward-looking statements contained in this report reflect our current views about future events and are subject to numerous known and unknown risks, uncertainties, assumptions, and changes in circumstances that may cause our actual results to differ significantly from those expressed in any forward-looking statement.

Statements regarding the following subjects, among others, may be forward-looking:

•market trends in our industry, including unfavorable changes to economic conditions that could adversely affect occupancy levels and rental rates, including as a result of the COVID-19 pandemic, interest rates, the debt and lending markets or the general economy;

•our business and investment strategy;

•the acquisition of properties, including those under contract, and the ability of our acquisitions to achieve underwritten capitalization rates and our ability to execute on our acquisition pipeline;

•the timing of acquisitions;

•the internalization of retiring PROs into the Company;

•our relationships with, and our ability and timing to attract additional, PROs;

•our ability to effectively align the interests of our PROs with us and our shareholders;

•the integration of our PROs and their managed portfolios into the Company, including into our financial and operational reporting infrastructure and internal control framework;

•our operating performance and projected operating results, including our ability to achieve market rents and occupancy levels, reduce operating expenditures and increase the sale of ancillary products and services;

•our ability to access additional off-market acquisitions;

•actions and initiatives of the U.S. federal, state and local government and changes to U.S. federal, state and local government policies and the execution and impact of these actions, initiatives and policies;

•the state of the U.S. economy generally or in specific geographic regions, states, territories or municipalities;

•economic trends and economic recoveries;

•our ability to obtain and maintain financing arrangements on favorable terms;

•general volatility of the securities markets in which we participate;

•changes in the value of our assets;

•projected capital expenditures;

•the impact of technology on our products, operations, and business;

•the implementation of our technology and best practices programs (including our ability to effectively implement our integrated Internet marketing strategy);

•changes in interest rates and the degree to which our hedging strategies may or may not protect us from interest rate volatility;

•impact of and changes in governmental regulations, tax law and rates, accounting guidance and similar matters;

•our ability to continue to qualify and maintain our qualification as a REIT for U.S. federal income tax purposes;

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•availability of qualified personnel, including constraints resulting from the COVID-19 pandemic;

•the timing of conversions of subordinated performance units in our operating partnership and subsidiaries of our operating partnership into OP units in our operating partnership, the conversion ratio in effect at such time and the impact of such convertibility on our diluted earnings (loss) per share;

•the risks of investing through joint ventures, including whether the anticipated benefits from a joint venture are realized or may take longer to realize than expected;

•estimates relating to our ability to make distributions to our shareholders in the future; and

•our understanding of our competition.

The forward-looking statements are based on our beliefs, assumptions and expectations of our future performance, taking into account all information currently available to us. Forward-looking statements are not predictions of future events. These beliefs, assumptions, and expectations can change as a result of many possible events or factors, not all of which are known to us. Readers should carefully review our financial statements and the notes thereto, as well as the sections entitled "Business," "Risk Factors," "Properties," and "Management's Discussion and Analysis of Financial Condition and Results of Operations," described in the Company's Annual Report, and the other documents we file from time to time with the SEC. If a change occurs, our business, financial condition, liquidity and results of operations may vary materially from those expressed in our forward-looking statements. Any forward-looking statement speaks only as of the date on which it is made. New risks and uncertainties arise over time, and it is not possible for us to predict those events or how they may affect us. In addition, we cannot assess the impact of each factor on our business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in any forward-looking statements. Except as required by law, we are not obligated to, and do not intend to, update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

Overview

National Storage Affiliates Trust is a fully integrated, self-administered and self-managed real estate investment trust organized in the state of Maryland on May 16, 2013. We have elected and we believe that we have qualified to be taxed as a REIT commencing with our taxable year ended December 31, 2015. We serve as the sole general partner of our operating partnership, a Delaware limited partnership formed on February 13, 2013 to conduct our business, which is focused on the ownership, operation, and acquisition of self storage properties located predominantly within the top 100 metropolitan statistical areas throughout the United States.

Our executive chairman of the board of trustees and former chief executive officer, Arlen D. Nordhagen, co-founded SecurCare Self Storage, Inc. in 1988 to invest in and manage self storage properties. While growing SecurCare to over 150 self storage properties, Mr. Nordhagen recognized a market opportunity for a differentiated public self storage REIT that would leverage the benefits of national scale by integrating multiple experienced regional self storage operators with local operational focus and expertise. We believe that his vision, which is the foundation of the Company, aligns the interests of our participating regional operators ("PROs"), with those of our public shareholders by allowing our PROs to participate alongside our shareholders in our financial performance and the performance of our PROs' managed portfolios. This structure offers our PROs a unique opportunity to serve as regional property managers for their managed portfolios and directly participate in the potential upside of those properties while simultaneously diversifying their investment to include a broader portfolio of self storage properties. Over time, through the acquisition of the iStorage brand and internalization of two of our largest PROs, SecurCare and Northwest, we have created a corporate property management platform to complement our PRO structure.

Our Structure

Through our property management platform, we direct, manage and control the day-to-day operations and affairs of a majority of our consolidated properties and our unconsolidated real estate ventures. As of March 31, 2022, our property management platform managed and controlled 510 of our consolidated properties and 177 of our unconsolidated real estate venture properties. The properties are managed by us under the brands of iStorage, SecurCare and Northwest.

We earn certain customary fees for managing and operating the properties in the unconsolidated real estate ventures and we facilitate tenant insurance and/or tenant warranty protection programs for tenants at these properties in exchange for half of all proceeds from such programs.

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For the properties that are managed by our PROs, our structure promotes operator accountability as subordinated performance units issued to our PROs in exchange for the contribution of their properties are entitled to distributions only after those properties satisfy minimum performance thresholds. In the event of a material reduction in operating cash flow, distributions on our subordinated performance units will be reduced before or disproportionately to distributions on our common shares held by our common shareholders. In addition, we expect our PROs will generally co-invest subordinated equity in the form of subordinated performance units in each acquisition that they source, and the value of these subordinated performance units will fluctuate with the performance of their managed portfolios. Therefore, our PROs are incentivized to select acquisitions that are expected to exceed minimum performance thresholds, thereby increasing the value of their subordinated equity stake. We expect that our shareholders will benefit from the higher levels of property performance that our PROs are incentivized to deliver.

As of March 31, 2022, the Company had nine PROs: Optivest, Guardian, Move It, Storage Solutions, Hide Away, Personal Mini, Southern, Moove In and Blue Sky. We seek to further expand our platform by continuing to recruit additional established self storage operators, while integrating our operations through the implementation of centralized initiatives, including management information systems, revenue enhancement, and cost optimization programs. Our national platform allows us to capture cost savings by eliminating redundancies and utilizing economies of scale across the property management platforms of our PROs while also providing greater access to lower-cost capital.

As discussed in Note 1 in Item 1, During the year ended December 31, 2021, one of our largest PROs, Kevin Howard Real Estate, Inc., d/b/a Northwest Self Storage and its controlled affiliates ("Northwest"), notified us of Northwest's election to retire as one of our PROs effective January 1, 2022. As a result of the retirement, on January 1, 2022, management of our properties in the Northwest managed portfolio was transferred to us and the related Northwest brand name and intellectual property was internalized by us, and we discontinued payment of any supervisory and administrative fees or reimbursements to Northwest. As part of the internalization, most of Northwest's employees were offered and provided employment by us and continue managing the same portfolio of properties as members of our existing property management platform.

Our Consolidated Properties

We seek to own properties that are well located in high quality sub-markets with highly accessible street access and attractive supply and demand characteristics, providing our properties with strong and stable cash flows that are less sensitive to the fluctuations of the general economy. Many of these markets have multiple barriers to entry against increased supply, including zoning restrictions against new construction and new construction costs that we believe are higher than our properties' fair market value. We have an attractive, high quality potential acquisition pipeline that we expect will continue to drive our future growth.

As of March 31, 2022, we owned a geographically diversified portfolio of 884 self storage properties, located in 39 states and Puerto Rico, comprising approximately 55.7 million rentable square feet, configured in approximately 433,000 storage units. Of these properties, 298 were acquired by us from our current and former PROs, 585 were acquired from third-party sellers and one was acquired from the 2016 Joint Venture.

During the three months ended March 31, 2022, we acquired 12 self storage properties for $92.9 million, comprising approximately 678,000 rentable square feet, configured in approximately 5,000 storage units. Of these acquisitions, one was acquired from one of our PROs and 11 were acquired from third-party sellers. During the three months ended March 31, 2022, we disposed of one self storage property that we had acquired from one of our PROs.

Our Unconsolidated Real Estate Ventures

We seek to opportunistically partner with institutional funds and other institutional investors to acquire attractive portfolios utilizing a promoted return structure. We believe there is significant opportunity for continued external growth by partnering with institutional investors seeking to deploy capital in the self storage industry. In addition, we consider the 75% third-party interest in the Company's unconsolidated real estate ventures, which currently own 177 properties, to present a potential acquisition opportunity. This 75% third-party share of gross real estate assets is approximately $1.5 billion based on the historical book value of the joint ventures. Were we to pursue an acquisition of these interests, it could potentially drive our future growth.

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2018 Joint Venture

As of March 31, 2022, our 2018 Joint Venture, in which we have a 25% interest, owned and operated a portfolio of 103 properties containing approximately 7.8 million rentable square feet, configured in approximately 64,000 storage units and located across 17 states.

2016 Joint Venture

As of March 31, 2022, our 2016 Joint Venture, in which we have a 25% ownership interest, owned and operated a portfolio of 74 properties containing approximately 4.9 million rentable square feet, configured in approximately 40,000 storage units and located across 13 states.

Results of Operations

When reviewing our results of operations it is important to consider the timing of acquisition activity. We acquired 12 self storage properties during the three months ended March 31, 2022 and 229 self storage properties during the year ended December 31, 2021. As a result of these and other factors, we do not believe that our historical results of operations discussed and analyzed below are comparable or necessarily indicative of our future results of operations or cash flows.

To help analyze the operating performance of our self storage properties, we also discuss and analyze operating results relating to our same store portfolio. Our same store portfolio is defined as those properties owned and operated on a stabilized basis since the first day of the earliest year presented. We consider a property to be stabilized once it has achieved an occupancy rate that is representative of similar properties in the applicable market. We exclude any properties sold, expected to be sold or subject to significant changes such as expansions or casualty events which cause the portfolio's year-over-year operating results to no longer be comparable. As of March 31, 2022, our same store portfolio consisted of 631 consolidated self storage properties.

The following discussion and analysis of the results of our operations and financial condition should be read in conjunction with the accompanying condensed consolidated financial statements in Item 1. Certain figures, such as interest rates and other percentages, included in this section have been rounded for ease of presentation. Percentage figures included in this section have not in all cases been calculated on the basis of such rounded figures but on the basis of such amounts prior to rounding. For this reason, percentage amounts in this section may vary slightly from those obtained by performing the same calculations using the figures in our condensed consolidated financial statements or in the associated text. Certain other amounts that appear in this section may similarly not sum due to rounding.

Three Months Ended March 31, 2022 compared to the Three Months Ended March 31, 2021

Net income was $44.8 million for the three months ended March 31, 2022, compared to $27.6 million for the three months ended March 31, 2021, an increase of $17.2 million. The increase was primarily due to an increase in net operating income ("NOI") generated from 241 self storage properties acquired between January 1, 2021 and March 31, 2022 and same store NOI growth, partially offset by increases in depreciation and amortization. For a description of NOI, see "Non-GAAP Financial Measures – NOI".

The following table illustrates the changes in rental revenue, other property-related revenue, management fees and other revenue, property operating expenses, and other expenses for the three months ended March 31, 2022 compared to the three months ended March 31, 2021 (dollars in thousands):

	Three Months Ended March 31,
	2022		2021		Change
Rental revenue
Same store portfolio	$	128,308	$	109,688	$	18,620
Non-same store portfolio	46,161		3,439		42,722
Total rental revenue	174,469		113,127		61,342
Other property-related revenue
Same store portfolio	4,311		4,039		272
Non-same store portfolio	1,855		98		1,757
Total other property-related revenue	6,166		4,137		2,029

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	Three Months Ended March 31,
	2022		2021		Change
Property operating expenses
Same store portfolio	34,317		33,284		1,033
Non-same store portfolio	15,041		1,320		13,721
Total property operating expenses	49,358		34,604		14,754
Net operating income
Same store portfolio	98,302		80,443		17,859
Non-same store portfolio	32,975		2,217		30,758
Total net operating income	131,277		82,660		48,617
Management fees and other revenue	6,549		5,728		821
General and administrative expenses	(13,966)		(11,238)		(2,728)
Depreciation and amortization	(58,072)		(32,424)		(25,648)
Other	(470)		(397)		(73)
Other (expense) income
Interest expense	(22,647)		(16,792)		(5,855)
Equity in earnings of unconsolidated real estate ventures	1,494		759		735
Acquisition costs	(553)		(292)		(261)
Non-operating expense	(112)		(173)		61
Gain on sale of self storage properties	2,134		—		2,134
Other expense	(19,684)		(16,498)		(3,186)
Income before income taxes	45,634		27,831		17,803
Income tax expense	(848)		(196)		(652)
Net income	44,786		27,635		17,151
Net income attributable to noncontrolling interests	(19,558)		(6,797)		(12,761)
Net income attributable to National Storage Affiliates Trust	25,228		20,838		4,390
Distributions to preferred shareholders	(3,279)		(3,275)		(4)
Net income attributable to common shareholders	$	21,949	$	17,563	$	4,386

Total Revenue

Our total revenue increased by $64.2 million, or 52.2%, for the three months ended March 31, 2022, as compared to the three months ended March 31, 2021. This increase was primarily attributable to incremental revenue from 241 self storage properties acquired between January 1, 2021 and March 31, 2022 (partially offset by the disposition of one self storage property) and an increase in total portfolio average occupancy from 91.8% for the three months ended March 31, 2021 to 92.5% for the three months ended March 31, 2022. Average occupancy is calculated based on the average of the month-end occupancy immediately preceding the period presented and the month-end occupancies included in the respective period presented.

Rental Revenue

Rental revenue increased by $61.3 million, or 54.2%, for the three months ended March 31, 2022, as compared to the three months ended March 31, 2021. The increase in rental revenue was due to a $42.7 million increase in non-same store rental revenue which was primarily attributable to incremental rental revenue of $38.8 million from 206 self storage properties acquired between April 1, 2021 and December 31, 2021 and $0.4 million from 12 self storage properties acquired during the three months ended March 31, 2022. Same store portfolio rental revenues increased $18.6 million, or 17.0%, due to an increase in average occupancy from 92.2% for the three months ended March 31, 2021 to 94.7% for the three months ended March 31, 2022 and a 13.4% increase, from $12.43 to $14.10, in annualized same store rental revenue (including fees and net of any discounts and uncollectible customer

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amounts) divided by average occupied square feet ("average annualized rental revenue per occupied square foot"), driven primarily by increased contractual lease rates for in-place tenants.

Other Property-Related Revenue

Other property-related revenue represents ancillary income from our self storage properties, such as tenant insurance-related access fees and sales of storage supplies. Other property-related revenue increased by $2.0 million, or 49.0%, for the three months ended March 31, 2022, as compared to the three months ended March 31, 2021. This increase primarily resulted from a $0.3 million increase in same store other property-related revenue and a $1.8 million increase in non-same store other property-related revenue which was primarily attributable to incremental other property-related revenue of $1.6 million from 206 self storage properties acquired between April 1, 2021 and December 31, 2021.

Management Fees and Other Revenue

Management fees and other revenue, which are primarily related to managing and operating the unconsolidated real estate ventures, were $6.5 million for the three months ended March 31, 2022, compared to $5.7 million for the three months ended March 31, 2021, an increase of $0.8 million. This increase was primarily attributable to increased property management fees due to growth in unconsolidated real estate venture revenue.

Property Operating Expenses

Property operating expenses were $49.4 million for the three months ended March 31, 2022 compared to $34.6 million for the three months ended March 31, 2021, an increase of $14.8 million, or 42.6%. The increase in property operating expenses primarily resulted from a $13.7 million increase in non-same store property operating expenses that was primarily attributable to incremental property operating expenses of $12.4 million from 206 self storage properties acquired between April 1, 2021 and December 31, 2021 and $0.2 million from 12 self storage properties acquired during the three months ended March 31, 2022. Same store portfolio operating expenses increased $1.0 million, or 3.1%, due primarily to increases in property taxes, utilities, and payment processing fees, partially offset by decreases in personnel and marketing expenses.

General and Administrative Expenses

General and administrative expenses increased $2.7 million, or 24.3%, for the three months ended March 31, 2022, compared to the three months ended March 31, 2021. This increase was primarily attributable to increases in supervisory and administrative fees charged by our PROs resulting from the increase in the number of properties managed by our PROs, and personnel costs.

Depreciation and Amortization

Depreciation and amortization increased $25.6 million, or 79.1%, for the three months ended March 31, 2022, compared to the three months ended March 31, 2021. This increase was primarily attributable to incremental depreciation expense related to the 241 self storage properties acquired between January, 2021 and March 31, 2022, and an increase in amortization of customer in-place leases from $2.4 million for the three months ended March 31, 2021 to $10.7 million for the three months ended March 31, 2022.

Interest Expense

Interest expense increased $5.9 million, or 34.9%, for the three months ended March 31, 2022, compared to the three months ended March 31, 2021. The increase in interest expense was primarily attributable to additional borrowings consisting of (i) the May 2021 issuance of the $55.0 million of 3.10% senior unsecured notes due May 4, 2033, (ii) the July 2021 issuance of the $35.0 million of 2.16% senior unsecured notes due May 4, 2026 and $90.0 million of 3.00% senior unsecured notes due May 4, 2031, (iii) the September 2021 issuance of $125.0 million of term loan debt under our credit facility with an effective interest rate of 1.60% as of March 31, 2022, (iv) the December 14, 2021 issuance of $75.0 million of 2.72% senior unsecured notes due November 30, 2030, $175.0 million of 2.81% senior unsecured notes due November 30, 2031 and $75.0 million of 3.06% senior unsecured notes due November 30, 2036, (v) the January 2022 issuance of $125.0 million of 2.96% senior unsecured notes due November 30, 2033 and (vi) an increase in average borrowings outstanding under our revolving line of credit with an effective interest rate of 1.70% as of March 31, 2022.

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Gain on Sale of Self Storage Properties

During the three months ended March 31, 2022, we disposed of one self storage property and an undeveloped land parcel for net proceeds of $6.2 million. We recorded a net gain on the dispositions of $2.1 million.

Equity In Earnings Of Unconsolidated Real Estate Ventures

Equity in earnings of unconsolidated real estate ventures represents our share of earnings and losses incurred through our 25% ownership interests in the 2018 Joint Venture and the 2016 Joint Venture. During the three months ended March 31, 2022, we recorded $1.5 million of equity in earnings from our unconsolidated real estate ventures compared to $0.8 million of earnings for the three months ended March 31, 2021.

Net Income Attributable to Noncontrolling Interests

As discussed in Note 2 in Item 1, we allocate GAAP income (loss) utilizing the HLBV method, in which we allocate income or loss based on the change in each unitholders' claim on the net assets of our operating partnership at period end after adjusting for any distributions or contributions made during such period.

Due to the stated liquidation priorities and because the HLBV method incorporates non-cash items such as depreciation expense, in any given period, income or loss may be allocated disproportionately to noncontrolling interests. Net income attributable to noncontrolling interests was $19.6 million for the three months ended March 31, 2022, compared to $6.8 million for the three months ended March 31, 2021.

Non-GAAP Financial Measures

FFO and Core FFO

Funds from operations, or FFO, is a widely used performance measure for real estate companies and is provided here as a supplemental measure of our operating performance. The December 2018 Nareit Funds From Operations White Paper - 2018 Restatement, which we refer to as the White Paper, defines FFO as net income (as determined under GAAP), excluding: real estate depreciation and amortization, gains and losses from the sale of certain real estate assets, gains and losses from change in control, mark-to-market changes in value recognized on equity securities, impairment write-downs of certain real estate assets and impairment of investments in entities when it is directly attributable to decreases in the value of depreciable real estate held by the entity and after items to record unconsolidated partnerships and joint ventures on the same basis. Distributions declared on subordinated performance units and DownREIT subordinated performance units represent our allocation of FFO to noncontrolling interests held by subordinated performance unitholders and DownREIT subordinated performance unitholders. For purposes of calculating FFO attributable to common shareholders, OP unitholders, and LTIP unitholders, we exclude distributions declared on subordinated performance units, DownREIT subordinated performance units, preferred shares and preferred units. We define Core FFO as FFO, as further adjusted to eliminate the impact of certain items that we do not consider indicative of our core operating performance. These further adjustments consist of acquisition costs, organizational and offering costs, gains on debt forgiveness, gains (losses) on early extinguishment of debt, and after adjustments for unconsolidated partnerships and joint ventures.

Management uses FFO and Core FFO as key performance indicators in evaluating the operations of our properties. Given the nature of our business as a real estate owner and operator, we consider FFO and Core FFO as key supplemental measures of our operating performance that are not specifically defined by GAAP. We believe that FFO and Core FFO are useful to management and investors as a starting point in measuring our operational performance because FFO and Core FFO exclude various items included in net income (loss) that do not relate to or are not indicative of our operating performance such as gains (or losses) from sales of self storage properties and depreciation, which can make periodic and peer analyses of operating performance more difficult. Our computation of FFO and Core FFO may not be comparable to FFO reported by other REITs or real estate companies.

FFO and Core FFO should be considered in addition to, but not as a substitute for, other measures of financial performance reported in accordance with GAAP, such as total revenues, operating income and net income (loss). FFO and Core FFO do not represent cash generated from operating activities determined in accordance with GAAP and are not a measure of liquidity or an indicator of our ability to make cash distributions. We believe that to further understand our performance, FFO and Core FFO should be compared with our reported net income (loss) and considered in addition to cash flows computed in accordance with GAAP, as presented in our consolidated financial statements.

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The following table presents a reconciliation of net income (loss) to FFO and Core FFO for the three months ended March 31, 2022 and 2021 (in thousands, except per share and unit amounts):

	Three Months Ended March 31,
	2022		2021
Net income	$	44,786	$	27,635
Add (subtract):
Real estate depreciation and amortization	57,759		32,070
Company's share of unconsolidated real estate venture real estate depreciation and amortization	3,846		3,881
Gain on sale of self storage properties	(2,134)		—
Distributions to preferred shareholders and unitholders	(3,552)		(3,517)
FFO attributable to subordinated performance unitholders(1)	(13,849)		(9,162)
FFO attributable to common shareholders, OP unitholders, and LTIP unitholders	86,856		50,907
Add:
Acquisition costs	553		292
Core FFO attributable to common shareholders, OP unitholders, and LTIP unitholders	$	87,409	$	51,199
Weighted average shares and units outstanding - FFO and Core FFO:(2)
Weighted average shares outstanding - basic	91,323		71,794
Weighted average restricted common shares outstanding	28		25
Weighted average effect of forward offering agreement(3)	—		399
Weighted average OP units outstanding	35,351		29,751
Weighted average DownREIT OP unit equivalents outstanding	1,925		1,925
Weighted average LTIP units outstanding	603		585
Total weighted average shares and units outstanding - FFO and Core FFO	129,230		104,479
FFO per share and unit	$	0.67	$	0.49
Core FFO per share and unit	$	0.68	$	0.49

(1) Amounts represent distributions declared for subordinated performance unitholders and DownREIT subordinated performance unitholders for the periods presented.

(2) NSA combines OP units and DownREIT OP units with common shares because, after the applicable lock-out periods, OP units in the Company's operating partnership are redeemable for cash or, at NSA's option, exchangeable for common shares on a one-for-one basis and DownREIT OP units are also redeemable for cash or, at NSA's option, exchangeable for OP units in our operating partnership on a one-for-one basis, subject to certain adjustments in each case. Subordinated performance units, DownREIT subordinated performance units, and LTIP units may also, under certain circumstances, be convertible into or exchangeable for common shares (or other units that are convertible into or exchangeable for common shares). See footnote(1) in the following table for additional discussion of subordinated performance units, DownREIT subordinated performance units, and LTIP units in the calculation of FFO and Core FFO per share and unit.

(3) Represents the dilutive effect of the forward offering from the application of the treasury stock method.

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The following table presents a reconciliation of earnings (loss) per share - diluted to FFO and Core FFO per share and unit for the three months ended March 31, 2022 and 2021:

	Three Months Ended March 31,
	2022		2021
Earnings (loss) per share - diluted	$	0.24	$	0.19
Impact of the difference in weighted average number of shares(1)	(0.07)		0.04
Impact of GAAP accounting for noncontrolling interests, two-class method and treasury stock method(2)	0.15		—
Add real estate depreciation and amortization	0.45		0.31
Add Company's share of unconsolidated venture real estate depreciation and amortization	0.03		0.04
Subtract gain on sale of self storage properties	(0.02)		—
FFO attributable to subordinated performance unitholders	(0.11)		(0.09)
FFO per share and unit	0.67		0.49
Add acquisition costs	0.01		—
Core FFO per share and unit	$	0.68	$	0.49

(1) Adjustment accounts for the difference between the weighted average number of shares used to calculate diluted earnings per share and the weighted average number of shares used to calculate FFO and Core FFO per share and unit. Diluted earnings per share is calculated using the two-class method for the company's restricted common shares and the treasury stock method for certain unvested LTIP units, and assumes the conversion of vested LTIP units into OP units on a one-for-one basis and the hypothetical conversion of subordinated performance units, and DownREIT subordinated performance units into OP units, even though such units may only be convertible into OP units (i) after a lock-out period and (ii) upon certain events or conditions. For additional information about the conversion of subordinated performance units, DownREIT subordinated performance units and LTIP units into OP units, see Note 9 in Item 1. The computation of weighted average shares and units for FFO and Core FFO per share and unit includes all restricted common shares and LTIP units that participate in distributions and excludes all subordinated performance units and DownREIT subordinated performance units because their effect has been accounted for through the allocation of FFO to the related unitholders based on distributions declared.

(2) Represents the effect of adjusting the numerator to consolidated net income (loss) prior to GAAP allocations for noncontrolling interests, after deducting preferred share and unit distributions, and before the application of the two-class method and treasury stock method, as described in footnote(1).

NOI

Net operating income, or NOI, represents rental revenue plus other property-related revenue less property operating expenses. NOI is not a measure of performance calculated in accordance with GAAP.

We believe NOI is useful to investors in evaluating our operating performance because:

•NOI is one of the primary measures used by our management and our PROs to evaluate the economic productivity of our properties, including our ability to lease our properties, increase pricing and occupancy and control our property operating expenses;

•NOI is widely used in the real estate industry and the self storage industry to measure the performance and value of real estate assets without regard to various items included in net income that do not relate to or are not indicative of operating performance, such as depreciation and amortization, which can vary depending upon accounting methods, the book value of assets, and the impact of our capital structure; and

•We believe NOI helps our investors to meaningfully compare the results of our operating performance from period to period by removing the impact of our capital structure (primarily interest expense on our outstanding indebtedness) and depreciation of the cost basis of our assets from our operating results.

There are material limitations to using a non-GAAP measure such as NOI, including the difficulty associated with comparing results among more than one company and the inability to analyze certain significant items, including depreciation and interest expense, that directly affect our net income (loss). We compensate for these limitations by considering the economic effect of the excluded expense items independently as well as in connection with our analysis of net income (loss). NOI should be considered in addition to, but not as a substitute for, other measures of financial performance reported in accordance with GAAP, such as total revenues and net income (loss).

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The following table presents a reconciliation of net income (loss) to NOI for the three months ended March 31, 2022 and 2021 (dollars in thousands):

	Three Months Ended March 31,
	2022		2021
Net income	$	44,786	$	27,635
(Subtract) Add:
Management fees and other revenue	(6,549)		(5,728)
General and administrative expenses	13,966		11,238
Other	470		397
Depreciation and amortization	58,072		32,424
Interest expense	22,647		16,792
Equity in earnings of unconsolidated real estate ventures	(1,494)		(759)
Acquisition costs	553		292
Income tax expense	848		196
Gain on sale of self storage properties	(2,134)		—
Non-operating expense	112		173
Net Operating Income	$	131,277	$	82,660

Our consolidated NOI shown in the table above does not include our proportionate share of NOI for our unconsolidated real estate ventures. For additional information about our 2018 Joint Venture and 2016 Joint Venture see Note 5 to the condensed consolidated financial statements in Item 1.

EBITDA and Adjusted EBITDA

We define EBITDA as net income (loss), as determined under GAAP, plus interest expense, loss on early extinguishment of debt, income taxes, depreciation and amortization expense and the Company's share of unconsolidated real estate venture depreciation and amortization. We define Adjusted EBITDA as EBITDA plus acquisition costs, organizational and offering expenses, equity-based compensation expense, losses on sale of properties and impairment of long-lived assets, minus gains on sale of properties and debt forgiveness, and after adjustments for unconsolidated partnerships and joint ventures. These further adjustments eliminate the impact of items that we do not consider indicative of our core operating performance. In evaluating EBITDA and Adjusted EBITDA, you should be aware that in the future we may incur expenses that are the same as or similar to some of the adjustments in this presentation. Our presentation of EBITDA and Adjusted EBITDA should not be construed as an inference that our future results will be unaffected by unusual or non-recurring items.

We present EBITDA and Adjusted EBITDA because we believe they assist investors and analysts in comparing our performance across reporting periods on a consistent basis by excluding items that we do not believe are indicative of our core operating performance. EBITDA and Adjusted EBITDA have limitations as an analytical tool. Some of these limitations are:

•EBITDA and Adjusted EBITDA do not reflect our cash expenditures, or future requirements, for capital expenditures, contractual commitments or working capital needs;

•EBITDA and Adjusted EBITDA do not reflect the significant interest expense, or the cash requirements necessary to service interest or principal payments, on our debts;

•although depreciation and amortization are non-cash charges, the assets being depreciated and amortized will often have to be replaced in the future, and EBITDA and Adjusted EBITDA do not reflect any cash requirements for such replacements;

•Adjusted EBITDA excludes equity-based compensation expense, which is and will remain a key element of our overall long-term incentive compensation package, although we exclude it as an expense when evaluating our ongoing operating performance for a particular period;

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•EBITDA and Adjusted EBITDA do not reflect the impact of certain cash charges resulting from matters we consider not to be indicative of our ongoing operations; and

•other companies in our industry may calculate EBITDA and Adjusted EBITDA differently than we do, limiting their usefulness as comparative measures.

We compensate for these limitations by considering the economic effect of the excluded expense items independently as well as in connection with our analysis of net income (loss). EBITDA and Adjusted EBITDA should be considered in addition to, but not as a substitute for, other measures of financial performance reported in accordance with GAAP, such as total revenues and net income (loss).

The following table presents a reconciliation of net income (loss) to EBITDA and Adjusted EBITDA for the three months ended March 31, 2022 and 2021 (dollars in thousands):

	Three Months Ended March 31,
	2022		2021
Net income	$	44,786	$	27,635
Add:
Depreciation and amortization	58,072		32,424
Company's share of unconsolidated real estate venture depreciation and amortization	3,846		3,881
Interest expense	22,647		16,792
Income tax expense	848		196
EBITDA	130,199		80,928
Add:
Acquisition costs	553		292
Gain on sale of self storage properties	(2,134)		—
Equity-based compensation expense	1,544		1,286
Adjusted EBITDA	$	130,162	$	82,506

Liquidity and Capital Resources

Liquidity Overview

Liquidity is the ability to meet present and future financial obligations. Our primary source of liquidity is cash flow from our operations. Additional sources are proceeds from equity and debt offerings, debt financings including additional borrowing capacity under the credit facility, and expansion options available under the 2023 Term Loan Facility, the 2028 Term Loan Facility, and our credit facility.

Our short-term liquidity requirements consist primarily of property operating expenses, property acquisitions, capital expenditures, general and administrative expenses and principal and interest on our outstanding indebtedness. A further short-term liquidity requirement relates to distributions to our common and preferred shareholders and holders of preferred units, OP units, LTIP units, subordinated performance units, DownREIT OP units and DownREIT subordinated performance units. We expect to fund short-term liquidity requirements from our operating cash flow, cash on hand and borrowings under our credit facility.

Our long-term liquidity needs consist primarily of the repayment of debt, property acquisitions, and capital expenditures. We acquire properties through the use of cash, preferred units, OP units and subordinated performance units in our operating partnership or DownREIT partnerships. We expect to meet our long-term liquidity requirements with operating cash flow, cash on hand, secured and unsecured indebtedness, and the issuance of equity and debt securities.

The availability of credit and its related effect on the overall economy may affect our liquidity and future financing activities, both through changes in interest rates and access to financing. Currently, interest rates are low

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compared to historical levels, but have increased in recent periods. Our ability to access capital on favorable terms as well as to use cash from operations to continue to meet our liquidity needs, all of which are highly uncertain and cannot be predicted, could be affected by various risks and uncertainties. We believe that, as a publicly-traded REIT, we will have access to multiple sources of capital to fund our long-term liquidity requirements, including the incurrence of additional debt and the issuance of debt and additional equity securities. However, we cannot assure you that this will be the case.

Cash Flows

At March 31, 2022, we had $26.6 million in cash and cash equivalents and $2.5 million of restricted cash, an increase in cash and cash equivalents of $1.6 million and a decrease in restricted cash of $0.3 million from December 31, 2021. Restricted cash primarily consists of escrowed funds deposited with financial institutions for real estate taxes, insurance, and other reserves for capital improvements in accordance with our loan agreements. The following discussion relates to changes in cash due to operating, investing, and financing activities, which are presented in our condensed consolidated statements of cash flows included in Item 1 of this report.

Operating Activities

Cash provided by our operating activities was $110.1 million for the three months ended March 31, 2022 compared to $64.1 million for the three months ended March 31, 2021, an increase of $46.0 million. Our operating cash flow increased primarily due to the 206 self storage properties acquired between April 1, 2021 and December 31, 2021 that generated cash flow for the entire three months ended March 31, 2022, an additional 12 self storage properties acquired during the three months ended March 31, 2022 and same store NOI growth. Because 218 self storage properties were acquired after March 31, 2021, our operating results for the three months ended March 31, 2021 were not impacted by them. The increase in our operating cash flows was partially offset by higher cash payments for interest expense.

Investing Activities

Cash used in investing activities was $83.5 million for the three months ended March 31, 2022 compared to $149.4 million for the three months ended March 31, 2021. The primary uses of cash for the three months ended March 31, 2022 were for our acquisition of 12 self storage properties for cash consideration of $75.1 million, capital expenditures of $8.2 million, and deposits for potential acquisitions of $6.0 million, partially offset by $6.2 million of proceeds from the disposition of one self storage property and an undeveloped land parcel.

Capital expenditures totaled $8.2 million and $5.7 million during the three months ended March 31, 2022 and 2021, respectively. We generally fund post-acquisition capital additions from cash provided by operating activities.

We categorize our capital expenditures broadly into three primary categories:

•recurring capital expenditures, which represent the portion of capital expenditures that are deemed to replace the consumed portion of acquired capital assets and extend their useful life;

•value enhancing capital expenditures, which represent the portion of capital expenditures that are made to enhance the revenue and value of an asset from its original purchase condition; and

•acquisitions capital expenditures, which represent the portion of capital expenditures capitalized during the current period that were identified and underwritten prior to a property's acquisition.

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A summary of the capital expenditures for these categories, along with a reconciliation of the total for these categories to the capital expenditures reported in the accompanying condensed consolidated statements of cash flows for the three months ended March 31, 2022 and 2021, are presented below (dollars in thousands):

	Three Months Ended March 31,
	2022		2021
Recurring capital expenditures	$	2,239	$	2,102
Value enhancing capital expenditures	2,241		2,239
Acquisitions capital expenditures	3,451		2,034
Total capital expenditures	7,931		6,375
Change in accrued capital spending	282		(690)
Capital expenditures per statement of cash flows	$	8,213	$	5,685

Financing Activities

Cash used in our financing activities was $25.3 million for the three months ended March 31, 2022 compared to cash provided by financing activities of $86.4 million for the three months ended March 31, 2021. Our sources of financing cash flows for the three months ended March 31, 2022 primarily consisted of $199.0 million of borrowings under our Revolver and $125.0 million from the issuance of the November 2033 Notes. Our primary uses of financing cash flows for the three months ended March 31, 2022 were for principal payments on existing debt of $265.1 million (which included $264.0 million of principal repayments under the Revolver and $1.1 million of fixed rate mortgage principal payments), distributions to noncontrolling interests of $33.3 million, payments of dividends to common shareholders of $45.7 million and distributions to preferred shareholders of $3.3 million.

Credit Facility and Term Loan Facilities

As of March 31, 2022, our credit facility provided for total borrowings of $1.550 billion, consisting of six components: (i) a Revolver which provides for a total borrowing commitment up to $650.0 million, whereby we may borrow, repay and re-borrow amounts under the Revolver, (ii) a $125.0 million Term Loan A, (iii) a $250.0 million Term Loan B, (iv) a $225.0 million Term Loan C, (v) a $175.0 million Term Loan D and (vi) a $125.0 million Term Loan E. The Revolver matures in January 2024; provided that we may elect to extend the maturity to July 2024 by paying an extension fee of 0.075% of the total borrowing commitment thereunder at the time of extension and meeting other customary conditions with respect to compliance. The Term Loan A matures in January 2023, the Term Loan B matures in July 2024, the Term Loan C matures in January 2025, the Term Loan D matures in July 2026 and the Term Loan E matures in March 2027. The Revolver, Term Loan A, Term Loan B, Term Loan C, Term Loan D and Term Loan E are not subject to any scheduled reduction or amortization payments prior to maturity. As of March 31, 2022, we have an expansion option under the credit facility, which, if exercised in full, would provide for a total credit facility of $1.750 billion. As of March 31, 2022, we would have had the capacity to borrow remaining Revolver commitments of $219.3 million while remaining in compliance with the credit facility's financial covenants.

We have a 2023 Term Loan Facility that matures in June 2023 and is separate from the credit facility in an aggregate amount of $175.0 million. As of March 31, 2022 the entire amount was outstanding under the 2023 Term Loan Facility with an effective interest rate of 2.83%. We have an expansion option under the 2023 Term Loan Facility, which, if exercised in full, would provide for total borrowings in an aggregate amount of $400.0 million.

We have a 2028 Term Loan Facility that matures in December 2028 and is separate from the credit facility and 2023 Term Loan Facility in an aggregate amount of $75.0 million. As of March 31, 2022 the entire amount was outstanding under the 2028 Term Loan Facility with an effective interest rate of 4.62%. We have an expansion option under the 2028 Term Loan Facility, which, if exercised in full, would provide for total borrowings in an aggregate amount up to $125.0 million.

We have a 2029 Term Loan Facility that matures in April 2029 and is separate from the credit facility, 2023 Term Loan Facility and 2028 Term Loan Facility in an aggregate amount of $100.0 million. As of March 31, 2022 the entire amount was outstanding under the 2029 Term Loan Facility with an effective interest rate of 4.27%.

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2029 and August 2031 Senior Unsecured Notes

On August 30, 2019, our operating partnership issued $100.0 million of 3.98% senior unsecured notes due August 30, 2029 and $50.0 million of 4.08% senior unsecured notes due August 30, 2031 in a private placement to certain institutional investors.

August 2030 and 2032 Senior Unsecured Notes

On October 22, 2020, our operating partnership issued $150.0 million of 2.99% senior unsecured notes due August 5, 2030 and $100.0 million of 3.09% senior unsecured notes due August 5, 2032 in a private placement to certain institutional investors.

2026, May 2031 and May 2033 Senior Unsecured Notes

On May 3, 2021, our operating partnership entered into an agreement to issue the 2026 Notes, the May 2031 Notes and the May 2033 Notes to certain institutional investors. On May 26, 2021, our operating partnership issued $55.0 million of 3.10% senior unsecured notes due May 4, 2033. On July 26, 2021, our operating partnership issued $35.0 million of 2.16% senior unsecured notes due May 4, 2026 and $90.0 million of 3.00% senior unsecured notes due May 4, 2031.

November 2030, November 2031, November 2033, and 2036 Senior Unsecured Notes

On November 9, 2021, our operating partnership entered an agreement to issue $75.0 million of 2.72% senior unsecured notes due November 30, 2030, $175.0 million of 2.81% senior unsecured notes due November 30, 2031, $125.0 million of 2.96% senior unsecured notes due November 30, 2033, and $75.0 million of 3.06% senior unsecured notes due November 30, 2036. On December 14, 2021 the operating partnership issued the November 2030 Notes, November 2031 Notes and the 2036 Notes. On January 28, 2022, our operating partnership issued the November 2033 Notes.

Fixed Rate Mortgage Payable

On July 9, 2021, we entered into an agreement with a single lender for an $88.0 million debt financing secured by eight of our self storage properties. This interest-only loan matures in July 2028 and has a fixed interest rate of 2.77%.

Equity Transactions

Issuance of Common Shares

During the three months ended March 31, 2022, after receiving notices of redemption from certain OP unitholders, we elected to issue 258,477 common shares to such holders in exchange for 258,477 OP units in satisfaction of the operating partnership's redemption obligations.

Issuance of OP Equity

In connection with the 12 properties acquired during the three months ended March 31, 2022, we issued $16.6 million of OP equity (consisting of 353,030 Series A-1 perpetual preferred units, 92,567 OP units and 15,061 subordinated performance units). We also issued $3.2 million of OP equity (consisting of 46,540 OP units) as consideration for Northwest's rights to property management contracts, brand, intellectual property, and certain intangible assets in connection with the PRO retirement.

During the three months ended March 31, 2022, we also issued (i) 3,911,260 OP units upon the non-voluntary conversion of 2,078,357 subordinated performance units in connection with Northwest's retirement, (ii) 235,241 OP units upon the conversion of 82,611 subordinated performance units and (iii) 117,216 OP units upon the conversion of an equivalent number of LTIP units. We also issued 244,792 subordinated performance units upon the conversion of 651,734 OP units.

Dividends and Distributions

On February 24, 2022, our board of trustees declared a cash dividend and distribution, respectively, of $0.50 per common share and OP unit to shareholders and OP unitholders of record as of March 15, 2022. On February 24, 2022, our board of trustees also declared cash distributions of $0.375 per Series A Preferred Share and Series A-1 preferred unit to shareholders and unitholders of record as of March 15, 2022. On March 11, 2022, our board of

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trustees declared cash distributions of $13.8 million, in aggregate, to subordinated performance unitholders of record as of March 15, 2022. Such dividends and distributions were paid on March 31, 2022.

Cash Distributions from our Operating Partnership

Under the LP Agreement of our operating partnership, to the extent that we, as the general partner of our operating partnership, determine to make distributions to the partners of our operating partnership out of the operating cash flow or capital transaction proceeds generated by a real property portfolio managed by one of our PROs, the holders of the series of subordinated performance units that relate to such portfolio are entitled to share in such distributions. Under the LP Agreement of our operating partnership, operating cash flow with respect to a portfolio of properties managed by one of our PROs is generally an amount determined by us, as general partner of our operating partnership, equal to the excess of property revenues over property related expenses from that portfolio. In general, property revenue from the portfolio includes:

(i)all receipts, including rents and other operating revenues;

(ii)any incentive, financing, break-up and other fees paid to us by third parties;

(iii)amounts released from previously set aside reserves; and

(iv)any other amounts received by us, which we allocate to the particular portfolio of properties.

In general, property-related expenses include all direct expenses related to the operation of the properties in that portfolio, including real property taxes, insurance, property-level general and administrative expenses, employee costs, utilities, property marketing expense, property maintenance and property reserves and other expenses incurred at the property level. In addition, other expenses incurred by our operating partnership will also be allocated by us, as general partner, to the property portfolio and will be included in the property-related expenses of that portfolio. Examples of such other expenses include:

(i)corporate-level general and administrative expenses;

(ii)out-of-pocket costs, expenses and fees of our operating partnership, whether or not capitalized;

(iii)the costs and expenses of organizing and operating our operating partnership;

(iv)amounts paid or due in respect of any loan or other indebtedness of our operating partnership during such period;

(v)extraordinary expenses of our operating partnership not previously or otherwise deducted under item (ii) above;

(vi)any third-party costs and expenses associated with identifying, analyzing, and presenting a proposed property to us and/or our operating partnership; and

(vii)reserves to meet anticipated operating expenditures, debt service or other liabilities, as determined by us.

To the extent that we, as the general partner of our operating partnership, determine to make distributions to the partners of our operating partnership out of the operating cash flow of a real property portfolio managed by one of our PROs, operating cash flow from a property portfolio is required to be allocated to OP unitholders and to the holders of series of subordinated performance units that relate to such property portfolio as follows:

First, an amount is allocated to OP unitholders in order to provide OP unitholders (together with any prior allocations of capital transaction proceeds) with a cumulative preferred allocation on the unreturned capital contributions attributed to the OP units in respect of such property portfolio. The preferred allocation for all of our existing portfolios is 6%. As of March 31, 2022, our operating partnership had an aggregate of $2,968.0 million of unreturned capital contributions with respect to common shareholders and OP unitholders, with respect to the various property portfolios.

Second, an amount is allocated to the holders of the series of subordinated performance units relating to such property portfolio in order to provide such holders with an allocation (together with prior distributions of capital transaction proceeds) on their unreturned capital contributions. Although the subordinated allocation for the subordinated performance units is non-cumulative from period to period, if the operating cash flow from a property portfolio related to a series of subordinated performance units is sufficient, in the judgment of the general partner (with the approval of a majority of our independent trustees), to fund distributions to the holders of such series of

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subordinated performance units, but we, as the general partner of our operating partnership, decline to make distributions to such holders, the amount available but not paid as distributions will be added to the subordinated allocation corresponding to such series of subordinated performance units. The subordinated allocation for the outstanding subordinated performance units is 6%. As of March 31, 2022, an aggregate of $218.6 million of unreturned capital contributions has been allocated to the various series of subordinated performance units.

Thereafter, any additional operating cash flow is allocated to OP unitholders and the applicable series of subordinated performance units equally.

Following the allocation described above, we as the general partner of our operating partnership, will generally cause our operating partnership to distribute the amounts allocated to the relevant series of subordinated performance units to the holders of such series of subordinated performance units. We, as the general partner, may cause our operating partnership to distribute the amounts allocated to OP unitholders or may cause our operating partnership to retain such amounts to be used by our operating partnership for any purpose. Any operating cash flow that is attributable to amounts retained by our operating partnership pursuant to the preceding sentence will generally be available to be allocated as an additional capital contribution to the various property portfolios.

The foregoing description of the allocation of operating cash flow between the OP unitholders and subordinated performance unitholders is used for purposes of determining distributions to holders of subordinated performance units but does not necessarily represent the operating cash flow that will be distributed to OP unitholders (or paid as dividends to holders of our common shares). Any distribution of operating cash flow allocated to the OP unitholders will be made at our discretion (and paid as dividends to holders of our common shares at the discretion of our board of trustees).

Under the LP Agreement of our operating partnership, capital transactions are transactions that are outside the ordinary course of our operating partnership's business, involve the sale, exchange, other disposition, or refinancing of any property, and are designated as capital transactions by us, as the general partner. To the extent the general partner determines to distribute capital transaction proceeds, the proceeds from capital transactions involving a particular property portfolio are required to be allocated to OP unitholders and to the series of subordinated performance units that relate to such property portfolio as follows:

First, an amount determined by us, as the general partner, of such capital transaction proceeds is allocated to OP unitholders in order to provide OP unitholders (together with any prior allocations of operating cash flow) with a cumulative preferred allocation on the unreturned capital contributions attributed to the OP unitholders in respect of such property portfolio that relate to such capital transaction plus an additional amount equal to such unreturned capital contributions.

Second, an amount determined by us, as the general partner, is allocated to the holders of the series of subordinated performance units relating to such property portfolio in order to provide such holders with a non-cumulative subordinated allocation on the unreturned capital contributions made by such holders in respect of such property portfolio that relate to such capital transaction plus an additional amount equal to such unreturned capital contributions.

The preferred allocation and subordinated allocation with respect to capital transaction proceeds for each portfolio is equal to the preferred allocation and subordinated allocation for distributions of operating cash flow with respect to that portfolio.

Thereafter, any additional capital transaction proceeds are allocated to OP unitholders and the applicable series of subordinated performance units equally.

Following the allocation described above, we, as the general partner of our operating partnership, will generally cause our operating partnership to distribute the amounts allocated to the relevant series of subordinated performance units to the holders of such series of subordinated performance units. We, as general partner of our operating partnership, may cause our operating partnership to distribute the amounts allocated to the OP unitholders or may cause our operating partnership to retain such amounts to be used by our operating partnership for any purpose. Any capital transaction proceeds that are attributable to amounts retained by our operating partnership pursuant to the preceding sentence will generally be available to be allocated as an additional capital contribution to the various property portfolios.

The foregoing allocation of capital transaction proceeds between the OP unitholders and subordinated performance unitholders is used for purposes of determining distributions to holders of subordinated performance

42

units but does not necessarily represent the capital transaction proceeds that will be distributed to OP unitholders (or paid as dividends to holders of our common shares). Any distribution of capital transaction proceeds allocated to the OP unitholders will be made at our discretion (and paid as dividends to holders of our common shares at the discretion of our board of trustees).

Allocation of Capital Contributions

We, as the general partner of our operating partnership, in our discretion, have the right to increase or decrease, as appropriate, the amount of capital contributions allocated to our operating partnership in general and to each series of subordinated performance units to reflect capital expenditures made by our operating partnership in respect of each portfolio, the sale or refinancing of all or a portion of the properties comprising the portfolio, the distribution of capital transaction proceeds by our operating partnership, the retention by our operating partnership of cash for working capital purposes and other events impacting the amount of capital contributions allocated to the holders. In addition, to avoid conflicts of interests, any decision by us to increase or decrease allocations of capital contributions must also be approved by a majority of our independent trustees.

Off-Balance Sheet Arrangements

Except as disclosed in the notes to our financial statements, as of March 31, 2022, we did not have any relationships with unconsolidated entities or financial partnerships, such as entities often referred to as structured finance or special purposes entities, which typically are established for the purpose of facilitating off-balance sheet arrangements or other contractually narrow or limited purposes. Further, except as disclosed in the notes to our financial statements, as of March 31, 2022, we have not guaranteed any obligations of unconsolidated entities, nor made any commitments to provide funding to any such entities, that creates any material exposure to any financing, liquidity, market or credit risk.

Seasonality

The self storage business is subject to minor seasonal fluctuations. A greater portion of revenues and profits are generally realized from May through September. Historically, our highest level of occupancy has typically been in July, while our lowest level of occupancy has typically been in February. Results for any quarter may not be indicative of the results that may be achieved for the full fiscal year.

ITEM 3. Quantitative and Qualitative Disclosures About Market Risk

Market risk refers to the risk of loss from adverse changes in market prices and interest rates. Our future income, cash flows, and fair values of financial instruments are dependent upon prevailing market interest rates. The primary market risk to which we believe we are exposed is interest rate risk. Interest rate risk is highly sensitive to many factors, including governmental monetary and tax policies, domestic and international economic and political considerations, and other factors beyond our control. We use interest rate swaps to moderate our exposure to interest rate risk by effectively converting the interest on variable rate debt to a fixed rate. We make limited use of other derivative financial instruments and we do not use them for trading or other speculative purposes.

As of March 31, 2022, we had $550.0 million of debt subject to variable interest rates (excluding variable-rate debt subject to interest rate swaps). If one-month LIBOR were to increase or decrease by 100 basis points, the increase or decrease in interest expense on the variable-rate debt (excluding variable-rate debt subject to interest rate swaps) would decrease or increase future earnings and cash flows by approximately $5.5 million annually.

Interest rate risk amounts were determined by considering the impact of hypothetical interest rates on our financial instruments. These analyses do not consider the effect of any change in overall economic activity that could occur. Further, in the event of a change of that magnitude, we may take actions to further mitigate our exposure to the change. However, due to the uncertainty of the specific actions that would be taken and their possible effects, these analyses assume no changes in our financial structure.

43

ITEM 4. Controls and Procedures

Disclosure Controls and Procedures

The Company's management, with the participation of the Company's chief executive officer and chief financial officer, has evaluated the effectiveness of the Company's disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act) as of the end of the period covered by this report. Based on that evaluation, the chief executive officer and chief financial officer concluded that the Company's disclosure controls and procedures, as of the end of the period covered by this report, are effective.

Changes in Internal Control Over Financial Reporting

There have been no changes in our internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) during the three months ended March 31, 2022 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Notwithstanding the foregoing, a control system, no matter how well designed and operated, can provide only reasonable, not absolute assurance that it will detect or uncover failures within the Company to disclose material information otherwise required to be set forth in our periodic reports.

PART II. OTHER INFORMATION

ITEM 1. Legal Proceedings

We are not currently subject to any legal proceedings that we consider to be material.

ITEM 1A. Risk Factors

For a discussion of our potential risks and uncertainties, see the Company's Annual Report on Form 10-K for the year ended December 31, 2021 filed with the SEC under the heading Item 1A. "Risk Factors" beginning on page 15, which is accessible on the SEC's website at www.sec.gov.

ITEM 2. Unregistered Sales of Equity Securities and Use of Proceeds

Unregistered Sales of Equity Securities

During the three months ended March 31, 2022, the Company, in its capacity as general partner of its operating partnership, caused the operating partnership to issue 258,477 common shares to satisfy redemption requests from certain limited partners.

On March 17, 2022, the operating partnership issued 8,844 subordinated performance units to an affiliate of Moove In, one of the Company's existing PROs, as partial consideration for the acquisition of a self storage property.

On March 23, 2022, the operating partnership issued 28,503 OP units to unrelated third parties as partial consideration for the acquisition of a self storage property.

Effective as of March 31, 2022, 26,734 Class A OP units were converted into 10,041 Series MI subordinated performance units through an affiliate of Move It in a voluntary conversion.

Following a specified lock up period after the date of issuance set forth above, the OP units issued by the operating partnership may be redeemed from time to time by holders for a cash amount per OP unit equal to the market value of an equivalent number of common shares. The Company has the right, but not the obligation, to assume and satisfy the redemption obligation of the operating partnership described above by issuing one common share in exchange for each OP unit tendered for redemption.

The Company has elected to report early the private placement of its common shares that may occur if the Company elects to assume the redemption obligation of the operating partnership as described above in the event that OP units are in the future tendered for redemption.

Following a two-year lock-up period, holders of subordinated performance units may elect, only upon the achievement of certain performance thresholds relating to the properties to which such subordinated performance units relate, to convert all or a portion of such subordinated performance units into OP units one time each year by submitting a completed conversion notice prior to December 1 of such year. All duly submitted conversion notices

44

will become effective on the immediately following January 1. For additional information about the conversion or exchange of subordinated performance units into OP units, see Note 9 in Item 1 of this report.

As of May 4, 2022, other than those OP units held by the Company, after reflecting the transactions described herein, 38,014,500 OP units of its operating partnership were outstanding (including 769,430 outstanding LTIP units in the operating partnership and 1,924,918 outstanding OP units ("DownREIT OP units") in certain consolidated subsidiaries of the operating partnership, which are convertible into, or exchangeable for, OP units on a one-for-basis, subject to certain conditions) and 12,190,478 subordinated performance units (including 4,337,111 subordinated performance units in certain subsidiaries of the operating partnership ("DownREIT subordinated performance units").

These issuances were exempt from registration under Section 4(a)(2) of the Securities Act of 1933, as amended.

Use of Proceeds

Not applicable.

Issuer Purchases of Equity Securities

During the three months ended March 31, 2022, certain of our employees surrendered common shares owned by them to satisfy their statutory minimum federal and state tax obligations associated with the vesting of restricted shares issued to them. The table below summarizes all of our repurchases of common shares during the quarter ended March 31, 2022:

Period	Total number of shares purchased		Total number of shares purchased as part of publicly announced plans or programs	Maximum numbers of shares that may yet be purchased under the plans or programs
January 1 - January 31, 2022	954	(1)	n/a	n/a
February 1 - February 28, 2022	1,308	(2)	n/a	n/a
March 1 - March 31, 2022	1,049	(3)	n/a	n/a

(1) The number of shares purchased represents restricted common shares surrendered by certain of our employees to satisfy their statutory minimum federal and state tax obligations associated with the vesting of restricted common shares issued to them. The price paid per share was $69.20 and is based on the closing price of our common shares as of December 31, 2021, the date prior to the date of withholding.

(2) The number of shares purchased represents restricted common shares surrendered by certain of our employees to satisfy their statutory minimum federal and state tax obligations associated with the vesting of restricted common shares issued to them. The price paid per share was $57.72 and is based on the closing price of our common shares as of February 18, 2022, the date prior to the date of withholding.

(3) The number of shares purchased represents restricted common shares surrendered by certain of our employees to satisfy their statutory minimum federal and state tax obligations associated with the vesting of restricted common shares issued to them. The price paid per share was $58.71 and is based on the closing price of our common shares as of March 1, 2022, the date of withholding.

ITEM 3. Defaults Upon Senior Securities

Not applicable.

ITEM 4. Mine Safety Disclosures

Not applicable.

ITEM 5. Other Information

Not applicable.

45

ITEM 6. Exhibits
The following exhibits are filed with this report:
Exhibit Number	Exhibit Description
3.1	Articles of Amendment and Restatement of National Storage Affiliates Trust (Exhibit 3.1 to the Quarterly Report on Form 10-Q, filed with the SEC on June 5, 2015, is incorporated herein by this reference)
3.2	Second Amended and Restated Bylaws of National Storage Affiliates Trust (Exhibit 3.1 to the Current Report on Form 8-K, filed with the SEC on April 3, 2018, is incorporated herein by this reference)
3.3	Articles Supplementary designating the Series A Preferred Shares of National Storage Affiliates Trust (Exhibit 3.3 to the Form 8-A, filed with the SEC on October 10, 2017, is incorporated herein by this reference)
3.4	Articles Supplementary designating the Series A Preferred Shares of National Storage Affiliates Trust (Exhibit 3.4 to the Form S-3ASR, filed with the SEC on March 14, 2018, is incorporated herein by this reference)
3.5	Articles Supplementary designating the Series A Preferred Shares of National Storage Affiliates Trust (Exhibit 3.5 to the Quarterly Report on Form 10-Q, filed with the SEC on May 3, 2019, is incorporated herein by this reference)
3.6	Articles Supplementary designating the Series A Preferred Shares of National Storage Affiliates Trust (Exhibit 3.1 to the Current Report on Form 8-K filed with the SEC on May 19, 2021, is incorporated herein by this reference)
4.1	Specimen Common Share Certificate of National Storage Affiliates Trust (Exhibit 4.1 to the Registration Statement on Form S-11/A filed with the SEC on April 20, 2015, is incorporated herein by reference)
4.2	Form of Specimen Certificate of Series A Preferred Shares of National Storage Affiliates Trust (Exhibit 4.1 to the Registration Statement on Form 8-A filed with the SEC on October 10, 2017, is incorporated herein by this reference)
4.3	Description of Common Shares of Beneficial Interest and 6.000% Series A Cumulative Redeemable Preferred Shares of Beneficial Interest (Exhibit 4.3 to the Annual Report on Form 10-K, filed with the SEC on February 26, 2020, is incorporated herein by this reference)
10.1*	Form of LTIP Unit Award Agreement for Executive Officers
31.1*	Certification of Chief Executive Officer pursuant to Rule 13a-14(a)/15d-14(a) of the Securities Exchange Act of 1934, as amended, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.2*	Certification of Chief Financial Officer pursuant to Rule 13a-14(a)/15d-14(a) of the Securities Exchange Act of 1934, as amended, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
32.1**	Certification of Chief Executive Officer and Chief Financial Officer pursuant to 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101.INS*	XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.
101.SCH*	Inline XBRL Taxonomy Extension Schema
101.CAL*	Inline XBRL Taxonomy Extension Calculation Linkbase
101.DEF*	Inline XBRL Taxonomy Extension Definition Linkbase
101.LAB*	Inline XBRL Taxonomy Extension Label Linkbase
101.PRE*	Inline XBRL Taxonomy Extension Presentation Linkbase
104*	Cover Page Interactive Data File (formatted as inline XBRL and contained in Exhibit 101)
*	Filed herewith.
**	Furnished herewith.

46

SIGNATURES

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.

	National Storage Affiliates Trust
By:	/s/ TAMARA D. FISCHER
	Tamara D. Fischer
	president and chief executive officer
	(principal executive officer)
By:	/s/ BRANDON S. TOGASHI
	Brandon S. Togashi
	chief financial officer
	(principal accounting and financial officer)

Date: May 5, 2022

47

EX-10.1

Exhibit 10.1

THE SECURITIES WHICH ARE THE SUBJECT OF THIS AGREEMENT HAVE BEEN ACQUIRED FOR INVESTMENT AND NOT WITH A VIEW TO, OR IN CONNECTION WITH, THE SALE OR DISTRIBUTION THEREOF. NO SUCH SALE OR DISPOSITION MAY BE EFFECTED WITHOUT AN EFFECTIVE REGISTRATION STATEMENT RELATED THERETO OR AN OPINION OF COUNSEL SATISFACTORY TO THE COMPANY THAT SUCH REGISTRATION IS NOT REQUIRED UNDER THE SECURITIES ACT OF 1933.

National Storage Affiliates Trust

Form of LTIP Unit Award Agreement

1.    Grant of LTIP Units.

[] (the “Grantee”), is hereby awarded [] LTIP Units (the “LTIP Units”)in NSA OP, LP (the “Partnership”), by National Storage Affiliates Trust, in its sole capacity as general partner of the Partnership, on the date hereof subject to the terms and conditions of this 20[] LTIP Unit Award Agreement (this “Agreement”) and subject to the provisions of the National Storage Affiliates Trust 2015 Equity Incentive Plan (the “Plan”) and the Third Amended and Restated Limited Partnership Agreement of the Partnership, dated as of April 28, 2015 (as amended, the “Partnership Agreement”). The Plan is hereby incorporated herein by reference as though set forth herein in its entirety. Definitions not included herein shall have the meaning set forth in the Plan and Partnership Agreement, as applicable.

2.    Restrictions and Conditions.

The LTIP Units are subject to the following restrictions and conditions, in addition to any requirements or restrictions set forth with respect to LTIP Units in the Plan and the Partnership Agreement:

    (a)[] LTIP Units shall vest as specified in Annex A attached hereto (the "Time Vested LTIP Units") and [] LTIP Units, representing the maximum number of LTIP Units that can vest based on performance, shall vest as specified in Annex B attached hereto (the "Performance Vested LTIP Units"). Subject to paragraph 5(b) below, during the period prior to the full vesting of any LTIP Unit (the "Vesting Period"), the Grantee shall not be permitted voluntarily or involuntarily to sell, transfer, pledge, anticipate, alienate, encumber or assign such LTIP Unit (or have such LTIP Unit attached or garnished).

    (b)    Except as provided in the foregoing paragraph (a), below in this paragraph (b) or in the Plan, the Grantee shall have, in respect of the LTIP Units, all of the rights of a holder of LTIP Units as set forth in the Partnership Agreement. Distributions and allocations with respect to the LTIP Units shall be made to the Grantee in accordance with the terms of the Partnership Agreement, except that the Grantee, during the Vesting Period, shall be entitled to receive distributions (1) with respect to each Time Vested LTIP Unit, equal to and concurrently with each distribution paid to a holder of a Class A OP Unit as distributions on Class A OP Units are made and (2) with respect to each Performance Vested LTIP Unit at the "Maximum Level" (as set forth on Annex B), equal to ten percent (10%) of the distributions payable with respect to each distribution paid to a holder of a Class A OP Unit as distributions on Class A OP Units are made (the "Interim Distributions"). Upon the completion of the Vesting Period, Grantee shall be entitled to receive an amount equal to (1) the distributions payable during the Vesting Period with respect to a number of Class A OP Units of the Company that is identical to the actual number of Performance Vested LTIP Units earned pursuant to Annex B, less (2) the amount of the Interim Distributions (such amount, the "Performance Distribution"). After the completion of the Vesting Period, Grantee shall be entitled to receive distributions on each vested LTIP Unit equal to distributions paid to a holder of a Class A OP Unit as distributions on Class A OP Units are made.

    (c)    Subject to paragraphs (d), (e) and (f) below, if the Grantee has a Termination of Service prior to the completion of the Vesting Period (i) without Cause (as defined in Grantee's employment

agreement with the Company dated [](the "Employment Agreement")), (ii) for Good Reason (as defined in the Employment Agreement), (iii) by reason of the Grantee's death or (iv) on account of the Grantee's Disability (as defined in the Employment Agreement) prior to the completion of the Vesting Period, then upon the completion of the Vesting Period, (1) the Grantee shall receive a prorated number of the Performance Vested LTIP Units calculated by multiplying the number of the Performance Vested LTIP Units that would have been awarded upon the completion of the Vesting Period if Grantee had not had a Termination of Service prior to the completion of the Vesting Period by a fraction (the "TerminationFraction") the numerator of which is (y) the number of calendar days that elapsed from the beginning of the Vesting Period to and including the date of the Grantee’s Termination of Service, and the denominator of which is (z) the number of calendar days in the Vesting Period, (2) the Grantee shall receive a prorated amount of the Performance Distribution calculated by multiplying the amount of the Performance Distribution that would have been paid upon the completion of the Vesting Period if Grantee had not had a Termination of Service prior to the completion of the Vesting Period (as calculated under paragraph 2(b) above) by the Termination Fraction, and (3) the outstanding Time Vested LTIP Units shall immediately vest. Notwithstanding the foregoing or any provisions of the Employment Agreement, in the event of such a Termination of Service following a Change of Control which occurs after June 30, 20[], then the number of Performance Vested LTIP Units that shall vest shall be calculated in the same manner as set forth in this paragraph (c) without being subject to proration.

    (d)    Upon the completion of the Vesting Period, or, if earlier, the Grantee's Termination of Service for any reason other than as specified above in paragraph (c), all LTIP Units granted hereunder that have not vested will be forfeited without payment of any consideration, and neither the Grantee nor his or her successors, heirs, assigns, or personal representatives will thereafter have any further rights or interests in such LTIP Units.

    (e)    If the Grantee commences or continues service as a director or consultant of the Company upon termination of employment, such continued service shall be treated as continued employment hereunder (and for purposes of the Plan), and the subsequent termination of service shall be treated as the applicable Termination of Service for purposes of this Agreement.

    (f)    If the Grantee's Employment Agreement provides that LTIP Units subject to restriction shall be subject to terms other than those set forth above, the terms of the Employment Agreement shall apply with respect to such LTIP Units granted hereby and shall, to the extent applicable, supersede the terms hereof.

    (g)    For purposes of this Agreement, a Termination of Service shall occur when the employee-employer relationship or trusteeship, or other service relationship, between the Grantee and the Company is terminated for any reason, including, but not limited to, any termination by resignation, discharge, death or retirement under the Employment Agreement. The Compensation Committee, in its absolute discretion, shall determine the effects of all matters and questions relating to termination of service. For this purpose, the service relationship shall be treated as continuing intact while the Grantee is on sick leave or other bona fide leave of absence (to be determined in the discretion of the Compensation Committee).

3.    Certain Terms of LTIP Units.

(a)    The Company may, but is not obligated to, issue to the Grantee (or its assignee or transferee, as applicable) a certificate in respect of the LTIP Units or may indicate such Grantee's ownership of LTIP Units on the Company's books and records. Such certificate, if any, shall be registered in the name of the Grantee (or such assignee or transferee). The certificates for LTIP Units issued hereunder may include any legend which the Committee deems appropriate to reflect any restrictions on transfer hereunder, or pursuant to any assignment or transfer by the Grantee, or as the Compensation Committee may otherwise deem appropriate, and, without limiting the generality of the foregoing, shall bear a legend referring to the terms, conditions, and restrictions applicable to such LTIP Units, substantially in the following form:

THE TRANSFERABILITY OF THIS CERTIFICATE AND THE LTIP UNITS REPRESENTED HEREBY ARE SUBJECT TO THE TERMS AND CONDITIONS OF THE NATIONAL STORAGE AFFILIATES TRUST 2015 EQUITY INCENTIVE PLAN, THE PARTNERSHIP AGREEMENT AND AN AWARD AGREEMENT APPLICABLE TO THE GRANT OF THE LTIP UNITS REPRESENTED BY THIS CERTIFICATE. COPIES OF SUCH PLAN, PARTNERSHIP AGREEMENT AND AWARD ARE ON FILE IN THE OFFICES OF NSA OP, LP.

(b)    Certificates, if any, evidencing the LTIP Units granted hereby shall be held in custody by the Company until the restrictions have lapsed. If and when such restrictions so lapse, the certificates shall be delivered by the Company to the Grantee.

(c)    So long as the Grantee holds any LTIP Units, the Grantee shall disclose to the Company in writing such information as may be reasonably requested with respect to ownership of LTIP Units and any conditions applicable thereto, as the Company, as applicable, may deem reasonably necessary, including in order to ascertain and establish compliance with provisions of the Internal Revenue Code of 1986, as amended (the “Code”), applicable to the Company or to comply with requirements of any other appropriate taxing or other regulatory authority.

4.    Compliance with Securities laws.

The Grantee acknowledges that the LTIP Units have not been registered under the Securities Act or under any state securities or “blue sky” law or regulation (collectively, "Securities Laws") and hereby makes the following representations and covenants as a condition to the grant of LTIP Units:

    (a)    The Grantee has not taken, and covenants that it will not take, himself or herself or through any agent acting on his behalf, any action that would subject the issuance or sale of the LTIP Units to the registration provisions of the Securities Act or to the registration, qualification or other similar provisions of any Securities Laws, or breach any of the provisions of any Securities Laws, but, rather, that the Grantee shall at all times act with regard to the LTIP Units in full compliance with all Securities Laws;

    (b)    The Grantee has acquired and, to the extent applicable, is acquiring the LTIP Units for his or her own account for investment and with no present intention of distributing the LTIP Units or any part thereof;

    (c)    The Grantee is and shall be an “accredited investor” as defined in Section 2(15) and Rule 501(a) of Regulation D of the Securities Act;

    (d)    The Grantee is capable of evaluating the merits and risks of the acquisition and ownership of the LTIP Units and has obtained all information regarding the Company (and its applicable affiliates) and the LTIP Units as the Grantee deems appropriate, and has relied solely upon such information, and the Grantee's own knowledge, experience and investigation, and those of his advisors, and not upon any representations of the Company, in connection with his investment decision in acquiring the LTIP Units; and

    (e)    The Grantee and his or her professional advisors have had an opportunity to conduct, and have so conducted if so desired, a due diligence investigation of the Company in connection with the decision to acquire the LTIP Units and in such regard have done all things as the Grantee and they have deemed appropriate and have had an opportunity to ask questions of and receive answers from the Company, and have done so, as they have deemed appropriate.

5.    Miscellaneous.

    (a)    THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF DELAWARE, WITHOUT REGARD TO ANY PRINCIPLES OF CONFLICTS OF LAW WHICH COULD CAUSE THE APPLICATION OF THE LAWS OF ANY JURISDICTION OTHER THAN THE STATE OF DELAWARE.

    (b)    Except as set forth in the Partnership Agreement, the Grantee shall not have the right to transfer all or any portion of the LTIP Units without the prior written consent of the General Partner (in its sole discretion); provided, however, that the Grantee may transfer all or any portion of the Grantee's vested LTIP Units for bona fide estate planning purposes to an immediate family member or the legal representative, estate, trustee or other successor in interest, as applicable, of the Grantee. Any transfer in violation of this Agreement or the Partnership Agreement, or which does not otherwise comply with the conditions of transfer imposed by the General Partner shall be void.

    (c)    The Grantee shall be responsible for filing with the Internal Revenue Service an election under Section 83(b) of the Code on a form substantially similar to the form attached hereto as Annex C and reasonably satisfactory to the Company (and will include a copy thereof with the applicable tax return) within 30 days after the date hereof. The Grantee shall be solely responsible for the filing of such election and all related filings.

    (d)    The captions of this Agreement are not part of the provisions hereof and shall have no force or effect. This Agreement may not be amended or modified except by a written agreement executed by the parties hereto or their respective successors and legal representatives. The invalidity or unenforceability of any provision of this Agreement shall not affect the validity or enforceability of any other provision of this Agreement.

    (e)    The Compensation Committee may make such rules and regulations and establish such procedures for the administration of this Agreement as it deems appropriate. Without limiting the generality of the foregoing, the Compensation Committee may interpret the Plan and this Agreement, with such interpretations to be conclusive and binding on all persons and otherwise accorded the maximum deference permitted by law. In the event of any dispute or disagreement as to interpretation of the Plan or this Agreement or of any rule, regulation or procedure, or as to any question, right or obligation arising from or related to the Plan or this Agreement, the decision of the Compensation Committee shall be final and binding upon all persons.

    (f)    All notices hereunder shall be in writing, and if to the Company or the Compensation Committee, shall be delivered to the Company or mailed to its principal office, addressed to the attention of the Compensation Committee; and if to the Grantee, shall be delivered personally, sent by facsimile transmission or mailed to the Grantee at the address appearing in the records of the Company. Such addresses may be changed at any time by written notice to the other party given in accordance with this paragraph 5(f).

    (g)    The failure of the Grantee or the Company to insist upon strict compliance with any provision of this Agreement or the Plan, or to assert any right the Grantee or the Company, respectively, may have under this Agreement or the Plan, shall not be deemed to be a waiver of such provision or right or any other provision or right of this Agreement or the Plan.

    (h)    Nothing in this Agreement shall confer on the Grantee any right to continue in the employ or other service of the Company or interfere in any way with the right of the Company or its affiliates to terminate the Grantee’s employment or other service at any time.

    (i)    The terms of this Agreement shall be binding upon the Grantee and upon the Grantee's heirs, executors, administrators, personal representatives, transferees, assignees and successors in interest and upon the Company and its successors and assignees, subject to the terms of the Plan.

    (j)    Notwithstanding anything to the contrary contained in this Agreement, to the extent that the board of trustees of the Company (the "Board") determines that an LTIP Unit or the Plan is subject to Section 409A of the Code and fails to comply with the requirements of Section 409A of the Code, the Compensation Committee reserves the right (without any obligation to do so or to indemnify the Grantee for failure to do so), without the consent of the Grantee, to amend or terminate this Agreement and the Plan and/or amend, restructure, terminate or replace the LTIP Unit in order to cause the LTIP Unit to either not be subject to Section 409A of the Code or to comply with the applicable provisions of such section.

(k)    If, in the opinion of the independent trustees of the Board, the Company's financial results are restated due in whole or in part to intentional fraud or misconduct by one or more of the Company's executive officers, the Company's independent trustees may, based upon the facts and circumstances surrounding the restatement, direct that the Company recover all or a portion of, or cancel, the awards granted under this Agreement.

(l)    This Agreement, together with the Plan and Partnership Agreement, contain the entire agreement between the parties with respect to the subject matter hereof and supersedes all prior agreements, written or oral, with respect thereto.

    IN WITNESS WHEREOF, the Company and the Grantee have executed this Agreement as of the []th day of [], 20[].

National Storage Affiliates Trust

By: __

Name: __

Title: __

GRANTEE

By: ___

Name: ___

Title: ___

ANNEX A

Time Vested LTIP Units

Subject to Section 2 of this Agreement, the [] Time Vested LTIP Units shall otherwise vest on the following dates:

Percentage (Amount) of Time Vested LTIP Units Awarded Hereunder	Vesting Date
[]% ([])	January 1, 20[]
[]% ([])	January 1, 20[]
[]% ([])	January 1, 20[]

ANNEX B

Performance Vested LTIP Units

Subject to Section 2 of this Agreement, the [] Performance Vested LTIP Units shall be subject to the following vesting rules during the period between January 1, 20[] and December 31, 20[] (the "Performance Period") and shall vest on January 1, 20[], subject to the achievement of certain performance criteria as set forth below:

1.    As to [] of the Performance Vested LTIP Units Granted:

	3-Year Relative TSR vs MSCI US REIT Index (RMS)	Vesting Percentage	Number of Performance Vested LTIP Units
"Minimum Level"	35th Percentile	[]%	[]
"Target Level"	55th Percentile	[]%	[]
"Maximum Level"	75th Percentile	[]%	[]

In the event the 3-Year Relative TSR vs. MSCI US REIT Index falls between the 35th and 55th percentile, the Vesting Percentage and number of Performance Vested LTIP Units vesting shall be determined using a straight line linear interpolation between []% and []% and in the event that the 3-Year Relative TSR vs. MSCI US REIT Index falls between the 55th and 75th percentile, the Vesting Percentage and number of Performance Vested LTIP Units vesting shall be determined using a straight line linear interpolation between []% and []%. In the event the 3-Year Relative TSR vs. MSCI US REIT Index is below the 35th percentile, the Vesting Percentage and number of Performance Vested LTIP Units vesting shall equal 0% of the "Maximum Level" Performance Vested LTIP Units. In the event the 3-Year Relative TSR vs. MSCI US REIT Index exceeds the 75th percentile, the Vesting Percentage and number of Performance Vested LTIP Units vesting shall equal []% of the "Maximum Level" Performance Vested LTIP Units.

2.     As to [] of the Performance Vested LTIP Units Granted:

	3-Year Relative TSR vs SS Peer Companies	Vesting Percentage	Number of Performance Vested LTIP Units
"Minimum Level"	4th Place	[]%	[]
"Target Level"	110% of SS Peer Companies’ Average TSR	[]%	[]
"Maximum Level"	1st Place	[]%	[]

For purposes of determining the target level, in the event that the simple average of the SS Peer Companies’ TSR is a negative figure, the target level shall be the average of the SS Peer Companies’ TSR plus 10% of the absolute value of that average. In the event the 3-Year Relative TSR vs. the SS Peer Companies is 2nd or 3rd Place and less than the target level, the Vesting Percentage and number of Performance Vested LTIP Units vesting shall be determined using a straight line linear interpolation between []% and []% and in the event that the 3-Year Relative TSR vs. the SS Peer Companies is 2nd or 3rd Place and greater than the target level, the Vesting Percentage and number of Performance Vested LTIP Units vesting shall be determined using a straight line linear interpolation between []% and []%. In the event the 3-Year Relative TSR vs. the SS Peer Companies is below 4th Place, the Vesting Percentage and number of Performance Vested LTIP Units vesting shall equal 0% of the "Maximum Level" Performance Vested LTIP Units.

3. For purposes of this Annex B, TSR performance will be calculated as the compounded annual growth rate, expressed as a percentage (rounded to the nearest tenth of a percent (0.1%)), in the value per share of common stock during the Performance Period due to the appreciation in the price per share of common stock and dividends paid during the Performance Period, assuming dividends are reinvested. The Absolute TSR Percentage is calculated as follows:

Absolute TSR Percentage = (1*(1 + Cumulative TSR))^(1/3) -1

•Where "Cumulative TSR" = ((1*(1 + TSR Year 1)*(1 + TSR Year 2)*(1 + TSR Year 3)) -1)

•For purposes of the Cumulative TSR calculation, "TSR" for a given year shall be calculated as follows:

    Where “D” is the amount of dividends paid to a shareholder of record with respect to one share of     common stock during the Performance Period. For purposes of the calculation above, the     "Ending Share Price" for the last year (third year) of performance shall be based on a 20 day     trailing     average closing stock price.

The Absolute TSR Percentage of National Storage Affiliates Trust will be compared with the Absolute TSR Percentage of each company in the MSCI US REIT Index and each SS Peer Company. The relative performance of National Storage Affiliates Trust versus the other companies in the MSCI US REIT Index will be expressed in terms of relative percentile ranking, which shall be applied as set forth in the table in

Section 1 above. The relative performance of National Storage Affiliates Trust versus the other SS Peer Companies will be expressed as a relative numerical ranking against the other SS Peer Companies, and if applicable comparison of relative TSR against 110% of SS Peer Companies’ Average TSR, in each case which shall be applied as set forth in the table in Section 2 above.

4. For purposes of Section 2 of this Annex B, the "SS Peer Companies" are:

•CubeSmart

•Extra Space Storage Inc.

•Life Storage, Inc.

•Public Storage

In order for a SS Peer Company to be included in the relative calculation for ascertaining the level of relative TSR performance under Section 2 of this Annex B, the SS Peer Company must be present for the entire Performance Period (i.e., a SS Peer Company that is, for example, acquired during the Performance Period, shall be entirely omitted from the calculation).

ANNEX C

[], 20[]

CERTIFIED MAIL RETURN

RECEIPT REQUESTED

Re:    Section 83(b) Election

Dear Sir or Madam:

Pursuant to Section 83(b) of the Internal Revenue Code of 1986, as amended (the “Code”), and the Treasury Regulations promulgated thereunder, the undersigned (the “Taxpayer”) files the following statement for the purpose of making, with respect to the property described below, the election permitted by Section 83(b):

1.    Name, address, taxpayer identification number and the taxable year of the Taxpayer:

Name:    ___

Address:    ___

___

T.I.N.:    ___

Taxable Year:    ___

2.    Description of the property with respect to which this election is being made: ____ units (“LTIP Units”) of interest in certain allocations and distributions of National Storage Affiliates Trust, a Maryland real estate investment trust (the “Company”). ______ of such LTIP Units are subject to restriction.

3.    The date on which the property was acquired by the Taxpayer and the taxable year for which the election is being made: The Taxpayer acquired the LTIP Units on ___________. The taxable year for which the election is made is the calendar year _____.

4.    The nature of the restrictions to which the property is subject: LTIP Units are subject to time-based and performance vesting. LTIP Units are subject to forfeiture in the event of certain terminations of the Taxpayer’s service with the Company.

5.    The fair market value at the time of the acquisition (determined without regard to any restriction other than a restriction which by its terms will never lapse) of the property with respect to which the election is being made: At the time of the acquisition, the LTIP Units had a fair market value of $[0] per unit.

6.    The amount paid for such property: The LTIP Units were acquired for a purchase price of $[0] per unit.

7.    Copies of this statement have been furnished to the person for whom the services are to be performed. Also, one copy of this statement will be submitted with the income tax return of the Taxpayer making this election for the taxable year in which the property was acquired.

Very truly yours,

        ______________

EX-31.1

Exhibit 31.1

Chief Executive Officer Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, Tamara D. Fischer, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of National Storage Affiliates Trust;

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 trustees (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: May 5, 2022

By:	/s/ Tamara D. Fischer
	Tamara D. Fischer
	President and Chief Executive Officer

EX-31.2

Exhibit 31.2

Chief Financial Officer Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, Brandon S. Togashi, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of National Storage Affiliates Trust;

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 trustees (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: May 5, 2022

By:	/s/ Brandon S. Togashi
	Brandon S. Togashi
	Chief Financial Officer

EX-32.1

Exhibit 32.1

Certification, Chief Executive Officer and Chief Financial Officer Pursuant To

18 U.S.C. Section 1350,

as Adopted Pursuant to

Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the Quarterly Report of National Storage Affiliates Trust (the “Company”) on Form 10-Q for the period ended March 31, 2022 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Tamara D. Fischer, President and Chief Executive Officer of the Company, and I, Brandon S. Togashi, Chief Financial Officer of the Company, hereby certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

(1)the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2)the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: May 5, 2022

By:	/s/ Tamara D. Fischer
	Tamara D. Fischer
	President and Chief Executive Officer

By:	/s/ Brandon S. Togashi
	Brandon S. Togashi
	Chief Financial Officer

Pursuant to the Securities and Exchange Commission Release 33-8238, dated June 5, 2003, this certification is being furnished and shall not be deemed filed by the Company for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or incorporated by reference in any registration statement of the Company filed under the Securities Act of 1933, as amended.

A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

XML

COVER PAGE - shares	3 Months Ended
	Mar. 31, 2022	May 04, 2022
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2022
Document Transition Report	false
Entity File Number	001-37351
Entity Registrant Name	National Storage Affiliates Trust
Entity Incorporation, State or Country Code	MD
Entity Tax Identification Number	46-5053858
Entity Address, Address Line One	8400 East Prentice Avenue, 9th Floor
Entity Address, City or Town	Greenwood Village
Entity Address, State or Province	CO
Entity Address, Postal Zip Code	80111
City Area Code	720
Local Phone Number	630-2600
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)		91,527,217
Entity Central Index Key	0001618563
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q1
Amendment Flag	false
Common Shares of Beneficial Interest, $0.01 par value per share
Entity Information [Line Items]
Title of 12(b) Security	Common Shares of Beneficial Interest, $0.01 par value per share
Trading Symbol	NSA
Security Exchange Name	NYSE
Series A Cumulative Redeemable Preferred Shares of Beneficial Interest, par value $0.01 per share
Entity Information [Line Items]
Title of 12(b) Security	Series A Cumulative Redeemable Preferred Shares of Beneficial Interest, par value $0.01 per share
Trading Symbol	NSA Pr A
Security Exchange Name	NYSE

XML

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Real estate
Self storage properties	$ 5,892,406	$ 5,798,188
Less accumulated depreciation	(624,368)	(578,717)
Self storage properties, net	5,268,038	5,219,471
Cash and cash equivalents	26,616	25,013
Restricted cash	2,531	2,862
Debt issuance costs, net	2,121	2,433
Investment in unconsolidated real estate ventures	184,547	188,187
Other assets, net	115,607	102,417
Operating lease right-of-use assets	21,951	22,211
Total assets	5,621,411	5,562,594
Liabilities
Debt financing	2,999,751	2,940,931
Accounts payable and accrued liabilities	60,678	59,262
Interest rate swap liabilities	3,821	33,757
Operating lease liabilities	23,751	23,981
Deferred revenue	23,366	22,208
Total liabilities	3,111,367	3,080,139
Commitments and contingencies (Note 11)
Equity
Preferred shares of beneficial interest, par value $0.01 per share. 50,000,000 authorized, 8,744,935 and 8,736,719 issued and outstanding at March 31, 2022 and December 31, 2021, respectively, at liquidation preference	218,623	218,418
Common shares of beneficial interest, par value $0.01 per share. 250,000,000 authorized, 91,461,720 and 91,198,929 shares issued and outstanding at March 31, 2022 and December 31, 2021, respectively	915	912
Additional paid-in capital	1,830,732	1,866,773
Distributions in excess of earnings	(315,024)	(291,263)
Accumulated other comprehensive income (loss)	11,734	(19,611)
Total shareholders' equity	1,746,980	1,775,229
Noncontrolling interests	763,064	707,226
Total equity	2,510,044	2,482,455
Total liabilities and equity	$ 5,621,411	$ 5,562,594

XML

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Mar. 31, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Series A Preferred shares of beneficial interest, par value (in dollars per share)	$ 0.01	$ 0.01
Series A Preferred shares of beneficial interest, authorized (in shares)	50,000,000	50,000,000
Series A Preferred shares of beneficial interest, issued (in shares)	8,744,935	8,736,719
Series A Preferred shares of beneficial interest, outstanding (in shares)	8,744,935	8,736,719
Common shares of beneficial interest, par value (in dollars per share)	$ 0.01	$ 0.01
Common shares of beneficial interest, authorized (in shares)	250,000,000	250,000,000
Common shares of beneficial interest, issued (in shares)	91,461,720	91,198,929
Common shares of beneficial interest, outstanding (in shares)	91,461,720	91,198,929

XML

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
REVENUE
Rental revenue	$ 174,469	$ 113,127
Total revenue	187,184	122,992
OPERATING EXPENSES
Property operating expenses	49,358	34,604
General and administrative expenses	13,966	11,238
Depreciation and amortization	58,072	32,424
Other	470	397
Total operating expenses	121,866	78,663
OTHER (EXPENSE) INCOME
Interest expense	(22,647)	(16,792)
Equity in earnings of unconsolidated real estate ventures	1,494	759
Acquisition costs	(553)	(292)
Non-operating expense	(112)	(173)
Gain on sale of self storage properties	2,134	0
Other expense	(19,684)	(16,498)
Income before income taxes	45,634	27,831
Income tax expense	(848)	(196)
Net income	44,786	27,635
Net income attributable to noncontrolling interests	(19,558)	(6,797)
Net income attributable to National Storage Affiliates Trust	25,228	20,838
Distributions to preferred shareholders	(3,279)	(3,275)
Net income attributable to common shareholders	$ 21,949	$ 17,563
Earnings (loss) per common share - basic and diluted
Earnings (loss) per share - basic (in dollars per share)	$ 0.24	$ 0.24
Earnings (loss) per share - diluted (in dollars per share)	$ 0.24	$ 0.19
Weighted average shares outstanding - basic (in shares)	91,323	71,794
Weighted average shares outstanding - diluted (in shares)	91,323	123,187
Dividends declared per common share (in dollars per share)	$ 0.50	$ 0.35
Other property-related revenue
REVENUE
Revenue	$ 6,166	$ 4,137
Management fees and other revenue
REVENUE
Revenue	$ 6,549	$ 5,728

XML

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 44,786	$ 27,635
Other comprehensive income
Unrealized gain on derivative contracts	38,608	20,900
Reclassification of other comprehensive loss to interest expense	4,974	4,957
Other comprehensive income	43,582	25,857
Comprehensive income	88,368	53,492
Comprehensive income attributable to noncontrolling interests	(32,341)	(14,814)
Comprehensive income attributable to National Storage Affiliates Trust	$ 56,027	$ 38,678

XML

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) $ in Thousands	Total	Common shares	OP units and subordinated performance units	Preferred Shares	Common Shares	Common Shares Common shares	Additional Paid-in Capital	Additional Paid-in Capital Common shares	Distributions In Excess Of Earnings	Accumulated Other Comprehensive (Loss) Income	Noncontrolling Interests	Noncontrolling Interests OP units and subordinated performance units
Beginning balances, preferred stock (in shares) at Dec. 31, 2020				8,732,719
Beginning balances, common stock (in shares) at Dec. 31, 2020					71,293,117
Beginning balances at Dec. 31, 2020	$ 1,430,475			$ 218,318	$ 713		$ 1,050,714		$ (251,704)	$ (49,084)	$ 461,518
Increase (Decrease) in Stockholders' Equity [Roll Forward]
OP units and subordinated performance units, net of offering costs			$ 22,897									$ 22,897
Redemptions of OP units (in shares)					190,248
Redemptions of OP units	0				$ 2		2,332			(108)	(2,226)
Issuance of shares, net of offering costs (in shares)						3,692,216
Issuance of shares, net of offering costs		$ 122,412				$ 37		$ 122,375
Merger and internalization of PRO, net of issuance costs (in shares)					0
Contributions from noncontrolling interests	103				$ 0		0			0	103
Effect of changes in ownership for consolidated entities	0						(18,983)			(290)	19,273
Equity-based compensation expense	1,286						92				1,194
Issuance of restricted common shares (in shares)					15,369
Issuance of restricted common shares	0
Vesting and forfeitures of restricted common shares, net (in shares)					(4,823)
Vesting and forfeitures of restricted common shares, net	(152)						(152)
Preferred share dividends	(3,275)								(3,275)
Common share dividends	(25,014)								(25,014)
Distributions to noncontrolling interests	(20,604)										(20,604)
Other comprehensive income (loss)	25,857									17,840	8,017
Net income	27,635								20,838		6,797
Ending balances, preferred stock (in shares) at Mar. 31, 2021				8,732,719
Ending balances, common stock (in shares) at Mar. 31, 2021					75,186,127
Ending balances at Mar. 31, 2021	$ 1,581,620			$ 218,318	$ 752		1,156,378		(259,155)	(31,642)	496,969
Beginning balances, preferred stock (in shares) at Dec. 31, 2021	8,736,719			8,736,719
Beginning balances, common stock (in shares) at Dec. 31, 2021	91,198,929				91,198,929
Beginning balances at Dec. 31, 2021	$ 2,482,455			$ 218,418	$ 912		1,866,773		(291,263)	(19,611)	707,226
Increase (Decrease) in Stockholders' Equity [Roll Forward]
OP units and subordinated performance units, net of offering costs			3,217									3,217
Acquisition of properties			$ 16,576									$ 16,576
Redemptions of OP units (in shares)					258,477
Redemptions of OP units	0				$ 3		4,601			(44)	(4,560)
Redemption of Series A-1 preferred units (in shares)				8,216
Redemption of Series A-1 preferred units	0			$ 205							(205)
Effect of changes in ownership for consolidated entities	0						(40,627)			590	40,037
Equity-based compensation expense	1,544						103				1,441
Issuance of restricted common shares (in shares)					7,913
Issuance of restricted common shares	0
Vesting and forfeitures of restricted common shares, net (in shares)					(3,599)
Vesting and forfeitures of restricted common shares, net	(118)						(118)
Preferred share dividends	(3,279)								(3,279)
Common share dividends	(45,710)								(45,710)
Distributions to noncontrolling interests	(33,009)										(33,009)
Other comprehensive income (loss)	43,582									30,799	12,783
Net income	$ 44,786								25,228		19,558
Ending balances, preferred stock (in shares) at Mar. 31, 2022	8,744,935			8,744,935
Ending balances, common stock (in shares) at Mar. 31, 2022	91,461,720				91,461,720
Ending balances at Mar. 31, 2022	$ 2,510,044			$ 218,623	$ 915		$ 1,830,732		$ (315,024)	$ 11,734	$ 763,064

XML

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
OPERATING ACTIVITIES
Net income	$ 44,786	$ 27,635
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	58,072	32,424
Amortization of debt issuance costs	1,043	806
Amortization of debt discount and premium, net	(172)	(177)
Gain on sale of self storage properties	(2,134)	0
Equity-based compensation expense	1,544	1,286
Equity in earnings of unconsolidated real estate ventures	(1,494)	(759)
Distributions from unconsolidated real estate ventures	5,135	4,015
Change in assets and liabilities, net of effects of self storage property acquisitions:
Other assets	(437)	686
Accounts payable and accrued liabilities	2,846	(3,037)
Deferred revenue	877	1,191
Net Cash Provided by Operating Activities	110,066	64,070
INVESTING ACTIVITIES
Acquisition of self storage properties	(75,098)	(141,175)
Capital expenditures	(8,213)	(5,685)
Deposits and advances for self storage property and other acquisitions	(6,000)	(2,530)
Expenditures for corporate furniture, equipment and other	(370)	(10)
Proceeds from sale of self storage properties	6,166	0
Net Cash Used In Investing Activities	(83,515)	(149,400)
FINANCING ACTIVITIES
Proceeds from issuance of common shares	0	122,412
Borrowings under debt financings	324,000	180,000
Contributions from noncontrolling interests	0	103
Principal payments under debt financings	(265,085)	(164,564)
Payment of dividends to common shareholders	(45,710)	(25,014)
Distributions to preferred shareholders	(3,279)	(3,275)
Distributions to noncontrolling interests	(33,277)	(20,730)
Debt issuance costs	(1,222)	(332)
Equity offering costs	(706)	(2,161)
Net Cash (Used In) Provided By Financing Activities	(25,279)	86,439
Increase in Cash, Cash Equivalents and Restricted Cash	1,272	1,109
CASH, CASH EQUIVALENTS AND RESTRICTED CASH
Beginning of period	27,875	21,701
End of period	29,147	22,810
Supplemental Cash Flow and Noncash Information
Cash paid for interest	21,140	18,359
Issuance of OP Units and subordinated performance units	19,793	22,897
Deposits on acquisitions applied to purchase price	700	1,087
Other net liabilities assumed	$ 332	$ 1,138

XML

ORGANIZATION AND NATURE OF OPERATIONS

3 Months Ended

Mar. 31, 2022

Organization, Consolidation and Presentation of Financial Statements [Abstract]

ORGANIZATION AND NATURE OF OPERATIONS

ORGANIZATION AND NATURE OF OPERATIONS

National Storage Affiliates Trust was organized in the state of Maryland on May 16, 2013 and is a fully integrated, self-administered and self-managed real estate investment trust focused on the self storage sector. As used herein, "NSA," the "Company," "we," "our," and "us" refers to National Storage Affiliates Trust and its consolidated subsidiaries, except where the context indicates otherwise. The Company has elected and believes that it has qualified to be taxed as a real estate investment trust for U.S. federal income tax purposes ("REIT") commencing with its taxable year ended December 31, 2015.

Through its controlling interest as the sole general partner of NSA OP, LP (its "operating partnership"), a Delaware limited partnership formed on February 13, 2013, the Company is focused on the ownership, operation, and acquisition of self storage properties predominantly located within the top 100 metropolitan statistical areas throughout the United States. Pursuant to the Agreement of Limited Partnership (as amended, the "LP Agreement") of its operating partnership, the Company's operating partnership is authorized to issue preferred units, Class A Units ("OP units"), different series of Class B Units ("subordinated performance units"), and Long-Term Incentive Plan Units ("LTIP units"). The Company also owns certain of its self storage properties through other consolidated limited partnership subsidiaries of its operating partnership, which the Company refers to as "DownREIT partnerships." The DownREIT partnerships issue equity ownership interests that are intended to be economically equivalent to the Company's OP units ("DownREIT OP units") and subordinated performance units ("DownREIT subordinated performance units").

The Company owned 884 consolidated self storage properties in 39 states and Puerto Rico with approximately 55.7 million rentable square feet in approximately 433,000 storage units as of March 31, 2022. These properties are managed with local operational focus and expertise by the Company and its participating regional operators ("PROs"). As of March 31, 2022, the Company directly managed 510 of these self storage properties through its corporate brands of iStorage, SecurCare and Northwest, and the PROs managed the remaining 374 self storage properties. These PROs are Optivest Properties LLC and its controlled affiliates ("Optivest"), Guardian Storage Centers LLC and its controlled affiliates ("Guardian"), Move It Self Storage and its controlled affiliates ("Move It"), Arizona Mini Storage Management Company d/b/a Storage Solutions and its controlled affiliates ("Storage Solutions"), Hide-Away Storage Services, Inc. and its controlled affiliates ("Hide-Away"), an affiliate of Shader Brothers Corporation d/b/a Personal Mini Storage ("Personal Mini"), Southern Storage Management Systems, Inc. d/b/a Southern Self Storage ("Southern"), affiliates of Investment Real Estate Management, LLC d/b/a Moove In Self Storage of York, Pennsylvania ("Moove In") and Blue Sky Self Storage, a strategic partnership between Argus Professional Storage Management and GYS Development LLC ("Blue Sky").

Effective January 1, 2022, one of the Company's largest PROs, Kevin Howard Real Estate Inc., d/b/a Northwest Self Storage and its controlled affiliates ("Northwest"), retired as one of the Company's PROs. As a result of the retirement, on January 1, 2022, management of the Company's properties in the Northwest managed portfolio was transferred to the Company and the Northwest brand name and related intellectual property was internalized by the Company, and the Company discontinued payment of any supervisory and administrative fees or reimbursements to Northwest. In addition, on January 1, 2022, we issued a non-voluntary conversion notice to convert all subordinated performance units related to Northwest's managed portfolio into OP units. As part of the internalization, most of Northwest's employees were offered and provided employment by us and continue managing the same portfolio of properties as members of our existing property management platform. See Note 3 and Note 6 for additional information related to the Northwest retirement and internalization.

As of March 31, 2022, the Company also managed through its property management platform an additional portfolio of 177 properties owned by the Company's unconsolidated real estate ventures. These properties contain approximately 12.7 million rentable square feet, configured in approximately 104,000 storage units and located across 21 states. The Company owns a 25% equity interest in each of its unconsolidated real estate ventures.

As of March 31, 2022, in total, the Company operated and held ownership interests in 1,061 self storage properties located across 42 states and Puerto Rico with approximately 68.4 million rentable square feet in approximately 537,000 storage units.

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

3 Months Ended

Mar. 31, 2022

Accounting Policies [Abstract]

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation

The accompanying condensed consolidated financial statements are presented on the accrual basis of accounting in accordance with U.S. generally accepted accounting principles ("GAAP") and have been prepared by the Company pursuant to the rules and regulations of the Securities and Exchange Commission (the "SEC") regarding interim financial reporting. Accordingly, certain information and footnote disclosures required by GAAP for complete financial statements have been condensed or omitted in accordance with such rules and regulations. In the opinion of management, all adjustments (consisting of normal recurring adjustments) considered necessary for a fair presentation of the condensed consolidated financial statements have been included. The Company's results of operations for the quarterly and year to date periods are not necessarily indicative of the results to be expected for the full year or any other future period.

Principles of Consolidation

The Company's financial statements include the accounts of its operating partnership and its controlled subsidiaries. All significant intercompany balances and transactions have been eliminated in the consolidation of entities.

When the Company obtains an economic interest in an entity, the Company evaluates the entity to determine if the entity is deemed a variable interest entity ("VIE"), and if the Company is deemed to be the primary beneficiary, in accordance with authoritative guidance issued on the consolidation of VIEs. When an entity is not deemed to be a VIE, the Company considers the provisions of additional guidance to determine whether the general partner controls a limited partnership or similar entity when the limited partners have certain rights. The Company consolidates all entities that are VIEs and of which the Company is deemed to be the primary beneficiary. The Company has determined that its operating partnership is a VIE. The sole significant asset of National Storage Affiliates Trust is its investment in its operating partnership, and consequently, substantially all of the Company’s assets and liabilities represent those assets and liabilities of its operating partnership.

As of March 31, 2022, the Company's operating partnership was the primary beneficiary of, and therefore consolidated, 22 partnerships that are considered VIEs, which owned 48 self storage properties. As of December 31, 2021, the Company's operating partnership was the primary beneficiary of, and therefore consolidated, 22 partnerships that are considered VIEs, which owned 48 self storage properties. The net book value of the real estate owned by these VIEs was $421.4 million and $425.7 million as of March 31, 2022 and December 31, 2021, respectively. For certain DownREIT partnerships which are subject to fixed rate mortgages payable, the carrying value of such fixed rate mortgages payable held by these VIEs was $188.7 million and $188.7 million as of March 31, 2022 and December 31, 2021, respectively. The creditors of the consolidated VIEs do not have recourse to the Company's general credit.

Revenue Recognition

Rental revenue

Rental revenue consists of space rentals and related fees. Management has determined that all of the Company's leases are operating leases. Substantially all leases may be terminated on a month-to-month basis and rental income is recognized ratably over the lease term using the straight-line method. Rents received in advance are deferred and recognized on a straight-line basis over the related lease term associated with the prepayment. Promotional discounts and other incentives are recognized as a reduction to rental income over the applicable lease term.

Other property-related revenue

Other property-related revenue primarily consists of ancillary revenues such as tenant insurance and/or tenant warranty protection-related access fees, sales of storage supplies and truck rentals which are recognized in the period earned.

The Company and certain of the Company’s PROs have tenant insurance- and/or tenant warranty protection plan-related arrangements with insurance companies and the Company’s tenants. During the three months ended March 31, 2022 and 2021, the Company recognized $4.9 million and $3.1 million, respectively, of tenant insurance and tenant warranty protection plan revenues.

The Company sells boxes, packing supplies, locks, other retail merchandise and rents moving trucks at its properties. During the three months ended March 31, 2022 and 2021, the Company recognized retail sales of $0.6 million and $0.5 million, respectively.

Management fees and other revenue

Management fees and other revenue consist of property management fees, platform fees, call center fees, acquisition fees, amounts related to the facilitation of tenant warranty protection or tenant insurance programs for certain stores in the Company's consolidated portfolio and unconsolidated real estate ventures, access fees associated with tenant insurance-related arrangements, and profit distributions from the Company's interest in a reinsurance company.

With respect to both the 2018 Joint Venture and the 2016 Joint Venture (as each is defined in Note 5), the Company provides supervisory and administrative property management services, centralized call center services, and technology platform and revenue management services to the properties in the unconsolidated real estate ventures. The property management fees are equal to 6% of monthly gross revenues and net sales revenues from the assets of the unconsolidated real estate ventures, and the platform fees are equal to $1,250 per month per unconsolidated real estate venture property. With respect to the 2016 Joint Venture only, the call center fee is equal to 1% of each of monthly gross revenues and net sales revenues from the 2016 Joint Venture properties. During the three months ended March 31, 2022 and 2021, the Company recognized property management fees, call center fees and platform fees of $3.8 million and $3.5 million, respectively.

For acquisition fees, the Company provides sourcing, underwriting and administration services to the unconsolidated real estate ventures. The 2018 Joint Venture paid the Company a $4.0 million acquisition fee related to the initial acquisition of properties by the 2018 Joint Venture (the "Initial 2018 JV Portfolio") in 2018, at the time of the Initial 2018 JV Portfolio acquisition. This fee is refundable to the 2018 Joint Venture, on a prorated basis, if the Company is removed as the managing member during the initial four year life of the 2018 Joint Venture and as such, the Company's performance obligation for this acquisition fee is satisfied over a four year period. As of March 31, 2022 and December 31, 2021, the Company had deferred revenue related to the acquisition fee of $0.3 million and $0.5 million, respectively.

The Company also earns acquisition fees for properties acquired by the unconsolidated real estate ventures subsequent to the Initial 2016 JV Portfolio and the Initial 2018 JV Portfolio. These fees are based on a percentage of the gross capitalization of the acquired assets determined by the members of the 2016 Joint Venture and the 2018 Joint Venture, and are generally earned when the unconsolidated real estate ventures obtain title and control of an acquired property. During the three months ended March 31, 2022 and 2021, the Company recognized acquisition fees of $0.2 million and $0.2 million, respectively.

The Company provides or makes available tenant insurance or tenant warranty protection programs for tenants at its properties. For certain of the properties in the Company’s consolidated portfolio and one of its unconsolidated real estate ventures that participate in tenant insurance, the Company provides such tenant insurance through the Company’s wholly-owned captive insurance company and a separate reinsurance company in which the Company has a partial ownership interest. With respect to properties in both of the Company’s unconsolidated real estate ventures, the Company receives 50% of all proceeds from tenant insurance and tenant warranty protection programs at each unconsolidated real estate venture property in exchange for facilitating the programs at those properties. During the three months ended March 31, 2022 and 2021, the Company recognized $2.4 million and $1.9 million, respectively, of revenue related to these activities.

Gain on sale of self storage properties

The Company recognizes gains from disposition of facilities only upon closing in accordance with the guidance on sales of nonfinancial assets. Profit on real estate sold is recognized upon closing when all, or substantially all, of the promised consideration has been received and is nonrefundable and the Company has transferred control of the facilities to the purchaser.

Investments in Unconsolidated Real Estate Ventures

The Company’s investments in its unconsolidated real estate ventures are recorded under the equity method of accounting in the accompanying condensed consolidated financial statements. Under the equity method, the Company’s investments in unconsolidated real estate ventures are stated at cost and adjusted for the Company’s share of net earnings or losses and reduced by distributions. Equity in earnings (losses) is recognized based on the

Company’s ownership interest in the earnings (losses) of the unconsolidated real estate ventures. The Company follows the "nature of the distribution approach" for classification of distributions from its unconsolidated real estate ventures in its condensed consolidated statements of cash flows. Under this approach, distributions are reported on the basis of the nature of the activity or activities that generated the distributions as either a return on investment, which are classified as operating cash flows, or a return of investment (e.g., proceeds from the unconsolidated real estate ventures' sale of assets) which are reported as investing cash flows.

Noncontrolling Interests

All of the limited partner equity interests ("OP equity") in the operating partnership not held by the Company are reflected as noncontrolling interests. Noncontrolling interests also include ownership interests in DownREIT partnerships held by entities other than the operating partnership or its subsidiaries. In the condensed consolidated statements of operations, the Company allocates net income (loss) attributable to noncontrolling interests to arrive at net income (loss) attributable to National Storage Affiliates Trust.

For transactions that result in changes to the Company's ownership interest in its operating partnership, the carrying amount of noncontrolling interests is adjusted to reflect such changes. The difference between the fair value of the consideration received or paid and the amount by which the noncontrolling interest is adjusted is reflected as an adjustment to additional paid-in capital on the condensed consolidated balance sheets.

Allocation of Net Income (Loss)

The distribution rights and priorities set forth in the operating partnership's LP Agreement differ from what is reflected by the underlying percentage ownership interests of the unitholders. Accordingly, the Company allocates GAAP income (loss) utilizing the hypothetical liquidation at book value ("HLBV") method, in which the Company allocates income or loss based on the change in each unitholders’ claim on the net assets of its operating partnership at period end after adjusting for any distributions or contributions made during such period. The HLBV method is commonly applied to equity investments where cash distribution percentages vary at different points in time and are not directly linked to an equity holder’s ownership percentage.

The HLBV method is a balance sheet-focused approach to income (loss) allocation. A calculation is prepared at each balance sheet date to determine the amount that unitholders would receive if the operating partnership were to liquidate all of its assets (at GAAP net book value) and distribute the resulting proceeds to its creditors and unitholders based on the contractually defined liquidation priorities. The difference between the calculated liquidation distribution amounts at the beginning and the end of the reporting period, after adjusting for capital contributions and distributions, is used to derive each unitholder's share of the income (loss) for the period. Due to the stated liquidation priorities and because the HLBV method incorporates non-cash items such as depreciation expense, in any given period, income or loss may be allocated disproportionately to unitholders as compared to their respective ownership percentage in the operating partnership, and net income (loss) attributable to National Storage Affiliates Trust could be more or less net income than actual cash distributions received and more or less income or loss than what may be received in the event of an actual liquidation. Additionally, the HLBV method could result in net income (or net loss) attributable to National Storage Affiliates Trust during a period when the Company reports consolidated net loss (or net income), or net income (or net loss) attributable to National Storage Affiliates Trust in excess of the Company's consolidated net income (or net loss). The computations of basic and diluted earnings (loss) per share may be materially affected by these disproportionate income (loss) allocations, resulting in volatile fluctuations of basic and diluted earnings (loss) per share.

Other Comprehensive Income (Loss)

The Company has cash flow hedge derivative instruments that are measured at fair value with unrealized gains or losses recognized in other comprehensive income (loss) with a corresponding adjustment to accumulated other comprehensive income (loss) within equity, as discussed further in Note 12. Under the HLBV method of allocating income (loss) discussed above, a calculation is prepared at each balance sheet date by applying the HLBV method including, and excluding, the assets and liabilities resulting from the Company's cash flow hedge derivative instruments to determine comprehensive income (loss) attributable to National Storage Affiliates Trust. As a result of the distribution rights and priorities set forth in the operating partnership's LP Agreement, in any given period, other comprehensive income (loss) may be allocated disproportionately to unitholders as compared to their respective ownership percentage in the operating partnership and as compared to their respective allocation of net income (loss).

Restricted Cash

The Company's restricted cash consists of escrowed funds deposited with financial institutions for real estate taxes, insurance and other reserves for capital improvements in accordance with the Company's loan agreements.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

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SHAREHOLDERS' EQUITY AND NONCONTROLLING INTERESTS

3 Months Ended

Mar. 31, 2022

Equity [Abstract]

SHAREHOLDERS' EQUITY AND NONCONTROLLING INTERESTS

SHAREHOLDERS' EQUITY AND NONCONTROLLING INTERESTS

Shareholders' Equity

At the Market ("ATM") Program

On February 27, 2019, the Company entered into a sales agreement with certain sales agents, pursuant to which the Company may sell from time to time up to an aggregate of $250.0 million of common shares of beneficial interest, $0.01 par value per share of the Company ("common shares") and 6.000% Series A cumulative redeemable preferred shares of beneficial interest ("Series A preferred shares") in sales deemed to be "at the market" offerings (the "sales agreement"). On May 19, 2021, the Company entered into an amendment to the sales agreement with certain sales agents, whereby the Company increased the aggregate gross sale price under the program to $400.0 million, which included $31.0 million of the remaining available offered shares. The sales agreement contemplates that, in addition to the issuance and sale by the Company of offered shares to or through the sale agents, the Company may enter into separate forward sale agreements with any forward purchaser. Forward sale agreements, if any, will include only the Company's common shares and will not include any Series A preferred shares. If the Company enters into a forward sale agreement with any forward purchaser, such forward purchaser will attempt to borrow from third parties and sell, through the related agent, acting as sales agent for such forward purchaser (each, a "forward seller"), offered shares, in an amount equal to the offered shares subject to such forward sale agreement, to hedge such forward purchaser’s exposure under such forward sale agreement. The Company may offer the common shares and Series A preferred shares through the agents, as the Company's sales agents, or, as applicable, as forward seller, or directly to the agents or forward sellers, acting as principals, by means of, among others, ordinary brokers’ transactions on the NYSE or otherwise at market prices prevailing at the time of sale or at negotiated prices.

During the three months ended March 31, 2022, the Company did not sell any common shares through the ATM program. As of March 31, 2022, the Company had $169.1 million of capacity remaining under its ATM Program.

Noncontrolling Interests

All of the OP equity in the Company's operating partnership not held by the Company are reflected as noncontrolling interests. Noncontrolling interests also include ownership interests in DownREIT partnerships held by entities other than the Company's operating partnership. NSA is the general partner of its operating partnership and is authorized to cause its operating partnership to issue additional partner interests, including OP units and subordinated performance units, at such prices and on such other terms as it determines in its sole discretion.

As of March 31, 2022 and December 31, 2021, units reflecting noncontrolling interests consisted of the following:

	March 31, 2022	December 31, 2021
Series A-1 preferred units	984,861	640,047
OP units	35,385,718	31,893,105
Subordinated performance units	7,853,367	9,754,482
LTIP units	769,430	775,447
DownREIT units
DownREIT OP units	1,924,918	1,924,918
DownREIT subordinated performance units	4,337,111	4,337,111
Total	51,255,405	49,325,110

Series A-1 Preferred Units

The 6.000% Series A-1 Cumulative Redeemable Preferred Units ("Series A-1 preferred units") rank senior to OP units and subordinated performance units in the Company's operating partnership with respect to distributions and liquidation. The Series A-1 preferred units have a stated value of $25.00 per unit and receive distributions at an annual rate of 6.000%. These distributions are cumulative. The Series A-1 preferred units are redeemable at the option of the holder after the first anniversary of the date of issuance, which redemption obligations may be satisfied at the Company’s option in cash in an amount equal to the market value of an equivalent number of the Series A preferred shares or the issuance of Series A preferred shares on a one-for-one basis, subject to adjustments. The Series A preferred shares are redeemable by the Company for a cash redemption price of $25.00 per share, plus accrued but unpaid dividends beginning in October 2022. The increase in Series A-1 preferred units outstanding from December 31, 2021 to March 31, 2022 was due to the issuance of 353,030 Series A-1 preferred units in connection with the acquisition of self storage properties, partially offset by the redemption of 8,216 Series A-1 preferred units for an equal number of Series A preferred shares.

OP Units and DownREIT OP units

OP units in the Company's operating partnership are redeemable for cash or, at the Company's option, exchangeable for the Company's common shares on a one-for-one basis, and DownREIT OP units are redeemable for cash or, at the Company's option, exchangeable for OP units in its operating partnership on a one-for-one basis, subject to certain adjustments in each case. The holders of OP units are generally not entitled to elect redemption until one year after the issuance of the OP units. The holders of DownREIT OP units are generally not entitled to elect redemption until five years after the date of the contributor's initial contribution.

The increase in OP units outstanding from December 31, 2021 to March 31, 2022 was due to (i) 3,911,260 OP units issued upon the non-voluntary conversion of 2,078,357 subordinated performance units (as discussed further below) in connection with Northwest's retirement, (ii) 235,241 OP units issued upon the voluntary conversion of 82,611 subordinated performance units, (iii) the conversion of 117,216 LTIP units into an equivalent number of OP units, (iv) the issuance of 92,567 OP units in connection with the acquisition of self storage properties, and (v) the issuance of 46,540 OP units in connection with the acquisition of Northwest's rights to property management contracts, brand, intellectual property, and certain tangible assets, partially offset by the conversion of 651,734 OP units into 244,792 subordinated performance units, and the redemption of 258,477 OP units for an equal number of common shares.

Subordinated Performance Units and DownREIT Subordinated Performance Units

Subordinated performance units may also, under certain circumstances, be convertible into OP units which are exchangeable for common shares as described above, and DownREIT subordinated performance units may, under certain circumstances, be exchangeable for subordinated performance units on a one-for-one basis. Subordinated performance units are only convertible into OP units after a two year lock-out period and then generally (i) at the holder’s election only upon the achievement of certain performance thresholds relating to the properties to which such subordinated performance units relate or (ii) at the Company's election upon a retirement event of a PRO that holds such subordinated performance units or upon certain qualifying terminations. The holders of DownREIT subordinated performance units are generally not entitled to elect redemption until at least five years after the date of the contributor's initial contribution.

Following such lock-out period, a holder of subordinated performance units in the Company's operating partnership may elect a voluntary conversion one time each year on or prior to December 1st to convert a pre-determined portion of such subordinated performance units into OP units in the Company's operating partnership, with such conversion effective January 1st of the following year, with each subordinated performance unit being converted into the number of OP units determined by dividing the average cash available for distribution, or CAD, per unit on the series of specific subordinated performance units over the one-year period prior to conversion by 110% of the CAD per unit on the OP units determined over the same period. CAD per unit on the series of specific subordinated performance units and OP units is determined by the Company based generally upon the application of the provisions of the LP Agreement applicable to the distributions of operating cash flow and capital transactions proceeds.

The decrease in subordinated performance units outstanding from December 31, 2021 to March 31, 2022 was due to the conversion of 2,078,357 subordinated performance units into 3,911,260 OP units in connection with the retirement of Northwest, and the voluntary conversion of 82,611 subordinated performance units into 235,241 OP units, partially offset by the issuance of 244,792 subordinated performance units upon conversion of 651,234 OP units, and the issuance of 15,061 subordinated performance units for co-investment by the Company's PROs in connection with the acquisition of self storage properties.

LTIP Units

LTIP units are a special class of partnership interest in the Company's operating partnership that allow the holder to participate in the ordinary and liquidating distributions received by holders of the OP units (subject to the achievement of specified levels of profitability by the Company's operating partnership or the achievement of certain events). LTIP units may also, under certain circumstances, be convertible into OP units on a one-for-one basis, which are then exchangeable for common shares as described above.

The decrease in LTIP units outstanding from December 31, 2021 to March 31, 2022 was due to the conversion of 117,216 LTIP units into an equivalent number of OP units, partially offset by the issuance of 111,199 compensatory LTIP units to employees, net of forfeitures.

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SELF STORAGE PROPERTIES

3 Months Ended

Mar. 31, 2022

Real Estate [Abstract]

SELF STORAGE PROPERTIES

SELF STORAGE PROPERTIES

Self storage properties are summarized as follows (dollars in thousands):

	March 31, 2022		December 31, 2021
Land	$	1,044,317	$	1,028,431
Buildings and improvements	4,838,336		4,760,567
Furniture and equipment	9,753		9,190
Total self storage properties	5,892,406		5,798,188
Less accumulated depreciation	(624,368)		(578,717)
Self storage properties, net	$	5,268,038	$	5,219,471

Depreciation expense related to self storage properties amounted to $46.7 million and $29.4 million during the three months ended March 31, 2022 and 2021, respectively.

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INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES

3 Months Ended

Mar. 31, 2022

Equity Method Investments and Joint Ventures [Abstract]

INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES

INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES

2018 Joint Venture

As of March 31, 2022, the Company's unconsolidated real estate venture, formed in September 2018 with an affiliate of Heitman America Real Estate REIT LLC (the "2018 Joint Venture"), owned and operated a portfolio of 103 self storage properties containing approximately 7.8 million rentable square feet, configured in approximately 64,000 storage units and located across 17 states.

2016 Joint Venture

As of March 31, 2022, the Company's unconsolidated real estate venture, formed in September 2016 with a state pension fund advised by Heitman Capital Management LLC (the "2016 Joint Venture"), owned and operated a portfolio of 74 properties containing approximately 4.9 million rentable square feet, configured in approximately 40,000 storage units and located across 13 states.

The following table presents the combined condensed financial position of the Company's unconsolidated real estate ventures as of March 31, 2022 and December 31, 2021 (in thousands):

	March 31, 2022		December 31, 2021
ASSETS
Self storage properties, net	$	1,727,229	$	1,741,538
Other assets	26,309		23,562
Total assets	$	1,753,538	$	1,765,100
LIABILITIES AND EQUITY
Debt financing	$	1,001,608	$	1,001,378
Other liabilities	22,321		19,493
Equity	729,609		744,229
Total liabilities and equity	$	1,753,538	$	1,765,100

The following tables present the combined condensed operating information of the Company's unconsolidated real estate ventures for the three months ended March 31, 2022 and 2021 (in thousands):

	Three Months Ended March 31,
	2022		2021
Total revenue	$	48,998	$	43,695
Property operating expenses	13,809		11,788
Net operating income	35,189		31,907
Supervisory, administrative and other expenses	(3,202)		(2,882)
Depreciation and amortization	(15,382)		(15,522)
Interest expense	(10,410)		(10,405)
Acquisition and other expenses	(274)		(121)
Net income	$	5,921	$	2,977

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ACQUISITIONS AND DISPOSITIONS

3 Months Ended

Mar. 31, 2022

Business Combination and Asset Acquisition [Abstract]

ACQUISITIONS AND DISPOSITIONS

ACQUISITIONS AND DISPOSITIONS

Acquisitions

The Company acquired 12 self storage properties for $92.9 million during the three months ended March 31, 2022. Of these acquisitions, one self storage property totaling $6.6 million was acquired by the Company from one of its PROs. The 12 self storage property acquisitions were accounted for as asset acquisitions and accordingly, $1.0 million of transaction costs related to the acquisitions were capitalized as part of the basis of the acquired properties. The Company recognized the estimated fair value of the acquired assets and assumed liabilities on the respective dates of such acquisitions. The Company allocated the total purchase price to the estimated fair value of tangible and intangible assets acquired and liabilities assumed. The Company allocated a portion of the purchase price to identifiable intangible assets consisting of customer in-place leases which were recorded at an estimated value of $1.7 million, resulting in a total value of $91.2 million allocated to real estate.

The following table summarizes the investment in self storage property acquisitions completed by the Company during the three months ended March 31, 2022 (dollars in thousands):

Acquisitions Closed During the Three Months Ended:	Number of Properties	Summary of Investment
		Cash and Acquisition Costs		Value of OP Equity(1)		Other Liabilities		Total
March 31, 2022	12	$	76,027	$	16,576	$	332	$	92,935

(1)Value of OP equity represents the fair value of OP units, subordinated performance units, and Series A-1 preferred units.

During the three months ended March 31, 2022, in connection with the retirement of Northwest as a PRO as discussed in Note 1 and Note 3, the Company acquired Northwest's rights to its asset management agreements, the Northwest brand, intellectual property, and certain tangible assets for $3.2 million, which was paid for by the issuance of 46,540 OP units.

Dispositions

During the three months ended March 31, 2022, the Company disposed of one self storage property and an undeveloped land parcel for net proceeds of $6.2 million. The Company recorded a net gain on the dispositions of $2.1 million.

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OTHER ASSETS

3 Months Ended

Mar. 31, 2022

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

OTHER ASSETS

OTHER ASSETS

Other assets consist of the following (dollars in thousands):

	March 31, 2022		December 31, 2021
Customer in-place leases, net of accumulated amortization of $21,104 and $14,336, respectively	$	20,480	$	29,427
Receivables:
Trade, net	6,466		6,228
PROs and other affiliates	1,781		2,878
Receivables from unconsolidated real estate ventures	5,951		4,028
Property acquisition and other deposits	6,100		800
Interest rate swaps	13,646		—
Prepaid expenses and other	8,796		9,552
Corporate furniture, equipment and other, net	1,478		1,422
Trade names	7,442		6,380
Management contracts, net of accumulated amortization of $4,522 and $4,237, respectively	12,989		10,983
Tenant reinsurance intangible, net of accumulated amortization of $1,745 and $1,504, respectively	22,296		22,537
Goodwill	8,182		8,182
Total	$	115,607	$	102,417

Amortization expense related to customer in-place leases amounted to $10.7 million and $2.4 million for the three months ended March 31, 2022 and 2021, respectively. Amortization expense related to management contracts amounted to $0.2 million and $0.3 million for the three months ended March 31, 2022 and 2021, respectively. Amortization expense related to the tenant reinsurance intangible amounted to $0.2 million and $0.1 million for the three months ended March 31, 2022 and 2021, respectively.

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DEBT FINANCING

3 Months Ended

Mar. 31, 2022

Debt Disclosure [Abstract]

DEBT FINANCING

DEBT FINANCING

The Company's outstanding debt as of March 31, 2022 and December 31, 2021 is summarized as follows (dollars in thousands):

	Interest Rate(1)	March 31, 2022		December 31, 2021
Credit Facility:
Revolving line of credit	1.70%	$	425,000	$	490,000
Term loan A	3.69%	125,000		125,000
Term loan B	2.86%	250,000		250,000
Term loan C	2.86%	225,000		225,000
Term loan D	3.07%	175,000		175,000
Term loan E	1.60%	125,000		125,000
2023 Term loan facility	2.83%	175,000		175,000
2028 Term loan facility	4.62%	75,000		75,000
2029 Term loan facility	4.27%	100,000		100,000
2026 Senior Unsecured Notes	2.16%	35,000		35,000
2029 Senior Unsecured Notes	3.98%	100,000		100,000
August 2030 Senior Unsecured Notes	2.99%	150,000		150,000
November 2030 Senior Unsecured Notes	2.72%	75,000		75,000
May 2031 Senior Unsecured Notes	3.00%	90,000		90,000
August 2031 Senior Unsecured Notes	4.08%	50,000		50,000
November 2031 Senior Unsecured Notes	2.81%	175,000		175,000
2032 Senior Unsecured Notes	3.09%	100,000		100,000
May 2033 Senior Unsecured Notes	3.10%	55,000		55,000
November 2033 Senior Unsecured Notes	2.96%	125,000		—
2036 Senior Unsecured Notes	3.06%	75,000		75,000
Fixed rate mortgages payable	3.82%	302,860		303,944
Total principal		3,007,860		2,948,944
Unamortized debt issuance costs and debt premium, net		(8,109)		(8,013)
Total debt		$	2,999,751	$	2,940,931

(1)Represents the effective interest rate as of March 31, 2022. Effective interest rate incorporates the stated rate plus the impact of interest rate cash flow hedges and discount and premium amortization, if applicable. For the revolving line of credit, the effective interest rate excludes fees for unused borrowings.

As of March 31, 2022, the Company's unsecured credit facility provided for total borrowings of $1.550 billion (the "credit facility") consisting of the following components: (i) a revolving line of credit (the "Revolver") which provides for a total borrowing commitment up to $650.0 million, under which the Company may borrow, repay and re-borrow amounts, (ii) a $125.0 million tranche A term loan facility (the "Term Loan A"), (iii) a $250.0 million tranche B term loan facility (the "Term Loan B"), (iv) a $225.0 million tranche C term loan facility (the "Term Loan C"), (v) a $175.0 million tranche D term loan facility (the "Term Loan D") and (vi) a $125.0 million tranche E term loan facility (the "Term Loan E"). As of March 31, 2022, the Company had an expansion option under the credit facility, which, if exercised in full, would provide for a total credit facility of $1.750 billion.

As of March 31, 2022, the Company had outstanding letters of credit totaling $5.7 million and would have had the capacity to borrow remaining Revolver commitments of $219.3 million while remaining in compliance with the credit facility's financial covenants. At March 31, 2022, the Company was in compliance with all such covenants.

November 2030, November 2031, November 2033 and 2036 Senior Unsecured Notes

On November 9, 2021, the operating partnership as issuer, and the Company, entered into a Note Purchase Agreement (the "November 2021 Note Purchase Agreement") which provides for the private placement of $75.0 million of 2.72% senior unsecured notes due November 30, 2030 (the "November 2030 Notes"), $175.0 million of 2.81% senior unsecured notes due November 30, 2031 (the "November 2031 Notes"), $125.0 million of 2.96% senior unsecured notes due November 30, 2033 (the "November 2033 Notes") and $75.0 million of 3.06% senior unsecured notes due November 30, 2036 (the "2036 Notes" and together with the November 2030 Notes, November 2031 Notes, and November 2033 Notes, the "November 2021 Senior Unsecured Notes") to certain institutional investors. The November 2021 Senior Unsecured Notes are governed by the November 2021 Note Purchase Agreement. On December 14, 2021 the operating partnership issued the November 2030 Notes, November 2031 Notes and the 2036 Notes. On January 28, 2022 the operating partnership issued the November 2033 Notes.

Future Debt Obligations

Based on existing debt agreements in effect as of March 31, 2022, the scheduled principal and maturity payments for the Company's outstanding borrowings are presented in the table below (in thousands):

Year Ending December 31,	Scheduled Principal and Maturity Payments		Amortization of Premium and Unamortized Debt Issuance Costs		Total
Remainder of 2022	$	3,289	$	(1,709)	$	1,580
2023	376,813		(1,925)		374,888
2024	696,964		(1,553)		695,411
2025	227,185		(977)		226,208
2026	212,322		(814)		211,508
2027	212,369		(483)		211,886
Thereafter	1,278,918		(648)		1,278,270
	$	3,007,860	$	(8,109)	$	2,999,751

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EARNINGS PER SHARE

3 Months Ended

Mar. 31, 2022

Earnings Per Share [Abstract]

EARNINGS PER SHARE

EARNINGS PER SHARE

The following table sets forth the computation of basic and diluted earnings (loss) per common share for the three months ended March 31, 2022 and 2021 (in thousands, except per share amounts):

	Three Months Ended March 31,
	2022		2021
Earnings (loss) per common share - basic and diluted
Numerator
Net income	$	44,786	$	27,635
Net income attributable to noncontrolling interests	(19,558)		(6,797)
Net income attributable to National Storage Affiliates Trust	25,228		20,838
Distributions to preferred shareholders	(3,279)		(3,275)
Distributed and undistributed earnings allocated to participating securities	(14)		(11)
Net income attributable to common shareholders - basic	21,935		17,552
Effect of assumed conversion of dilutive securities	—		6,452
Net income attributable to common shareholders - diluted	$	21,935	$	24,004
Denominator
Weighted average shares outstanding - basic	91,323		71,794
Effect of dilutive securities:
Weighted average effect of outstanding forward offering agreement	—		399
Weighted average OP units outstanding	—		29,751
Weighted average DownREIT OP unit equivalents outstanding	—		1,925
Weighted average LTIP units outstanding	—		133
Weighted average subordinated performance units and DownREIT subordinated performance unit equivalents	—		19,185
Weighted average shares outstanding - diluted	91,323		123,187
Earnings (loss) per share - basic	$	0.24	$	0.24
Earnings (loss) per share - diluted	$	0.24	$	0.19

As discussed in Note 2, the Company allocates GAAP income (loss) utilizing the HLBV method, in which the Company allocates income or loss based on the change in each unitholders' claim on the net assets of its operating partnership at period end after adjusting for any distributions or contributions made during such period. Due to the stated liquidation priorities and because the HLBV method incorporates non-cash items such as depreciation expense, in any given period, income or loss may be allocated disproportionately to National Storage Affiliates Trust and noncontrolling interests, resulting in volatile fluctuations of basic and diluted earnings (loss) per share.

Outstanding equity interests of the Company's operating partnership and DownREIT partnerships are considered potential common shares for purposes of calculating diluted earnings (loss) per share as the unitholders may, through the exercise of redemption rights, obtain common shares, subject to various restrictions. Basic earnings per share is calculated based on the weighted average number of common shares outstanding during the period. Diluted earnings per share is calculated by further adjusting for the dilutive impact using the treasury stock method for unvested LTIP units subject to a service condition outstanding during the period and the if-converted method for any convertible securities outstanding during the period.

Generally, following certain lock-out periods, OP units in the Company's operating partnership are redeemable for cash or, at the Company's option, exchangeable for common shares on a one-for-one basis, subject to certain adjustments and DownREIT OP units are redeemable for cash or, at the Company's option, exchangeable for OP units in its operating partnership on a one-for-one basis, subject to certain adjustments in each case.

LTIP units may also, under certain circumstances, be convertible into OP units on a one-for-one basis, which are then exchangeable for common shares as described above. Certain LTIP units vested prior to or upon the completion of the Company's initial public offering and certain LTIP units have vested upon the satisfaction of a service or market condition or will vest upon the satisfaction of future service and market conditions. Vested LTIP units and unvested LTIP units that vest based on a service or market condition are allocated income or loss in a similar manner as OP units. Unvested LTIP units subject to a service or market condition are evaluated for dilution using the treasury stock method. For the three months ended March 31, 2022, 413,111 unvested LTIP units that vest based on a service or market condition are excluded from the calculation of diluted earnings (loss) per share as they are not dilutive to earnings (loss) per share. For the three months ended March 31, 2022, 252,894 LTIP units that vest upon the future acquisition of properties are excluded from the calculation of diluted earnings (loss) per share because the contingency for the units to vest has not been attained as of the end of the reported period.

Subordinated performance units may also, under certain circumstances, be convertible into OP units which are exchangeable for common shares as described above, and DownREIT subordinated performance units may, under certain circumstances, be exchangeable for subordinated performance units on a one-for-one basis. Subordinated performance units are only convertible into OP units, after a two year lock-out period and then generally (i) at the holder’s election only upon the achievement of certain performance thresholds relating to the properties to which such subordinated performance units relate or (ii) at the Company's election upon a retirement event of a PRO that holds such subordinated performance units or upon certain qualifying terminations. Although subordinated performance units may only be convertible after a two year lock-out period, the Company assumes a hypothetical conversion of each subordinated performance unit (including each DownREIT subordinated performance unit) into OP units (with subsequently assumed redemption into common shares) for the purposes of calculating diluted weighted average common shares. This hypothetical conversion is calculated using historical financial information, and as a result, is not necessarily indicative of the results of operations, cash flows or financial position of the Company upon expiration of the two-year lock out period on conversions.

For the three months ended March 31, 2022, potential common shares totaling 58.3 million related to OP units, DownREIT OP units, subordinated performance units, DownREIT subordinated performance units and vested LTIP units have been excluded from the calculation of diluted earnings (loss) per share as they are not dilutive to earnings (loss) per share.

Participating securities, which consist of unvested restricted common shares, receive dividends equal to those received by common shares. The effect of participating securities for the periods presented above is calculated using the two-class method of allocating distributed and undistributed earnings.

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RELATED PARTY TRANSACTIONS

3 Months Ended

Mar. 31, 2022

Related Party Transactions [Abstract]

RELATED PARTY TRANSACTIONS

RELATED PARTY TRANSACTIONS

Supervisory and Administrative Fees

For the self storage properties that are managed by the PROs, the Company has entered into asset management agreements with the PROs to provide leasing, operating, supervisory and administrative services. The asset management agreements generally provide for fees ranging from 5% to 6% of gross revenue for the managed self storage properties. During the three months ended March 31, 2022 and 2021, the Company incurred $5.3 million and $4.2 million, respectively, for supervisory and administrative fees to the PROs. Such fees are included in general and administrative expenses in the accompanying condensed consolidated statements of operations.

Payroll Services

For the self storage properties that are managed by the PROs, the employees responsible for operations are employees of the PROs who charge the Company for the costs associated with the respective employees. For the three months ended March 31, 2022 and 2021, the Company incurred $7.0 million and $6.4 million, respectively, for payroll and related costs reimbursable to these PROs. Such costs are included in property operating expenses in the accompanying condensed consolidated statements of operations.

Due Diligence Costs

During the three months ended March 31, 2022 and 2021, the Company incurred $0.2 million and $0.3 million of expenses payable to certain PROs related to self storage property acquisitions sourced by the PROs. These expenses, which are based on the volume of transactions sourced by the PROs, are intended to reimburse the PROs for due diligence costs incurred in the sourcing and underwriting process. These due diligence costs are capitalized as part of the basis of the acquired self storage properties.

PRO Retirement

In connection with the retirement of Northwest as a PRO as discussed in Note 1, Note 3, and Note 6, effective as of January 1, 2022, 2,078,357 Series NW subordinated performance units converted into 3,911,260 OP units as a non-voluntary conversion. Of these, (i) a company owned and controlled by J. Timothy Warren, a trustee of the Company, received 13,213 OP units with a value of $0.9 million upon conversion of 7,021 Series NW subordinated performance units and (ii) a company controlled by J. Timothy Warren, but owned by Mr. Warren's adult children, received 295,739 OP units with a value of $20.5 million upon the conversion of 157,149 Series NW subordinated performance units.

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COMMITMENTS AND CONTINGENCIES	3 Months Ended
	Mar. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	COMMITMENTS AND CONTINGENCIESLegal Proceedings The Company is subject to litigation, claims, and assessments that may arise in the ordinary course of its business activities. Such matters include contractual matters, employment related issues, and regulatory proceedings. Although occasional adverse decisions or settlements may occur, the Company believes that the final disposition of such matters will not have a material adverse effect on the Company's financial position, results of operations, or liquidity.

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FAIR VALUE MEASUREMENTS

3 Months Ended

Mar. 31, 2022

Fair Value Disclosures [Abstract]

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS

Recurring Fair Value Measurements

The Company sometimes limits its exposure to interest rate fluctuations by entering into interest rate swap agreements. The interest rate swap agreements moderate the Company's exposure to interest rate risk by effectively converting the interest on variable rate debt to a fixed rate. The Company measures its interest rate swap derivatives at fair value on a recurring basis. The changes in the fair value of derivatives designated and that qualify as cash flow hedges are recorded in accumulated other comprehensive income (loss) and are subsequently reclassified into earnings in the period that the hedged transaction affects earnings.

Information regarding the Company's interest rate swaps measured at fair value, which are classified within Level 2 of the GAAP fair value hierarchy, is presented below (dollars in thousands):

				Fair Value
	Number of Contracts	Notional Amount		Other Assets, net		Interest Rate Swap Liabilities
As of March 31, 2022
Interest Rate Swaps	19	$	1,125,000	$	13,646	$	3,821
As of December 31, 2021
Interest Rate Swaps	19	$	1,125,000	$	—	$	33,757

The following table presents the effect of our derivative instruments on our consolidated financial statements (dollars in thousands):

Fair value at December 31, 2020	$	(77,918)
Swap ineffectiveness	17
Losses on interest rate swaps reclassified into interest expense from accumulated other comprehensive loss	4,957
Unrealized losses on interest rate swaps included in accumulated other comprehensive (loss) income	20,900
Fair value at March 31, 2021	$	(52,044)
Fair value at December 31, 2021	$	(33,757)
Losses on interest rate swaps reclassified into interest expense from accumulated other comprehensive income	4,974
Unrealized gains on interest rate swaps included in accumulated other comprehensive (loss) income	38,608
Fair value at March 31, 2022	$	9,825

As of March 31, 2022 and December 31, 2021, the Company had outstanding interest rate swaps with aggregate notional amounts of $1,125.0 million and $1,125.0 million, respectively, designated as cash flow hedges. As of March 31, 2022, the Company's swaps had a weighted average remaining term of approximately 2.6 years. The fair value of these swaps are presented as interest rate swap assets and liabilities in the Company's balance sheets, and the Company recognizes any changes in the fair value as an adjustment of accumulated other comprehensive income (loss) within equity. If the forward rates at March 31, 2022 remain constant, the Company estimates that during the next 12 months, the Company would reclassify into earnings approximately $2.7 million of the unrealized losses and approximately $1.1 of the unrealized gains included in accumulated other comprehensive income (loss).

There were no transfers between levels of the three-tier fair value measurement hierarchy during the three months ended March 31, 2022 and 2021. For financial assets and liabilities that utilize Level 2 inputs, the Company utilizes both direct and indirect observable price quotes, including LIBOR yield curves. The Company uses valuation techniques for Level 2 financial assets and liabilities which include LIBOR yield curves at the reporting date as well as assessing counterparty credit risk. Counterparties to these contracts are highly rated financial institutions. Although the Company has determined that the majority of the inputs used to value its derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with the Company's derivatives utilize Level 3 inputs, such as estimates of current credit spreads, to evaluate the likelihood of default by the Company and the counterparties. As of March 31, 2022, the Company determined that the effect of credit valuation adjustments on the overall valuation of its derivative positions are not significant to the overall valuation of its derivatives. Therefore, the Company has determined that its derivative valuations are appropriately classified in Level 2 of the fair value hierarchy.

Fair Value Disclosures

The carrying values of cash and cash equivalents, restricted cash, trade receivables, and accounts payable and accrued liabilities reflected in the balance sheets at March 31, 2022 and December 31, 2021, approximate fair value due to the short term nature of these financial assets and liabilities. The carrying value of variable rate debt financing reflected in the balance sheets at March 31, 2022 and December 31, 2021 approximates fair value as the changes in their associated interest rates reflect the current market and credit risk is similar to when the loans were originally obtained.

The fair values of fixed rate private placement notes and mortgages were estimated using the discounted estimated future cash payments to be made on such debt; the discount rates used approximated current market rates for loans, or groups of loans, with similar maturities and credit quality (categorized within Level 2 of the fair value hierarchy). The combined principal balance of the Company’s fixed rate private placement notes was approximately $1.03 billion as of March 31, 2022, with a fair value of approximately $961.9 million. In determining the fair value, the Company estimated a weighted average market interest rate of approximately 3.96%, compared to the weighted

average contractual interest rate of 3.08%. The combined principal balance of the Company’s fixed rate private placement notes was approximately $905.0 million as of December 31, 2021, with a fair value of approximately $931.1 million. In determining the fair value, the Company estimated a weighted average market interest rate of approximately 2.81%, compared to the weighted average contractual interest rate of 3.09%. The combined principal balance of the Company's fixed rate mortgages payable was approximately $302.9 million as of March 31, 2022 with a fair value of approximately $301.8 million . In determining the fair value, the Company estimated a weighted average market interest rate of approximately 4.03%, compared to the weighted average contractual interest rate of 4.11%. The combined principal balance of the Company's fixed rate mortgages was approximately $303.9 million as of December 31, 2021 with a fair value of approximately $319.9 million. In determining the fair value as of December 31, 2021, the Company estimated a weighted average market interest rate of approximately 2.55%, compared to the weighted average contractual interest rate of 4.12%.

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SUBSEQUENT EVENTS	3 Months Ended
	Mar. 31, 2022
Subsequent Events [Abstract]
SUBSEQUENT EVENTS	SUBSEQUENT EVENTSSelf Storage Property AcquisitionsOn April 12, 2022, the 2016 Joint Venture acquired seven self storage properties for approximately $208.0 million. The 2016 Joint Venture financed the acquisition with capital contributions from venture members, of which the Company contributed approximately $52.0 million.

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)

3 Months Ended

Mar. 31, 2022

Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation

The accompanying condensed consolidated financial statements are presented on the accrual basis of accounting in accordance with U.S. generally accepted accounting principles ("GAAP") and have been prepared by the Company pursuant to the rules and regulations of the Securities and Exchange Commission (the "SEC") regarding interim financial reporting. Accordingly, certain information and footnote disclosures required by GAAP for complete financial statements have been condensed or omitted in accordance with such rules and regulations. In the opinion of management, all adjustments (consisting of normal recurring adjustments) considered necessary for a fair presentation of the condensed consolidated financial statements have been included. The Company's results of operations for the quarterly and year to date periods are not necessarily indicative of the results to be expected for the full year or any other future period.

Principles of Consolidation

Principles of ConsolidationThe Company's financial statements include the accounts of its operating partnership and its controlled subsidiaries. All significant intercompany balances and transactions have been eliminated in the consolidation of entities.

Variable Interest Entities

When the Company obtains an economic interest in an entity, the Company evaluates the entity to determine if the entity is deemed a variable interest entity ("VIE"), and if the Company is deemed to be the primary beneficiary, in accordance with authoritative guidance issued on the consolidation of VIEs. When an entity is not deemed to be a VIE, the Company considers the provisions of additional guidance to determine whether the general partner controls a limited partnership or similar entity when the limited partners have certain rights. The Company consolidates all entities that are VIEs and of which the Company is deemed to be the primary beneficiary. The Company has determined that its operating partnership is a VIE. The sole significant asset of National Storage Affiliates Trust is its investment in its operating partnership, and consequently, substantially all of the Company’s assets and liabilities represent those assets and liabilities of its operating partnership.

Revenue Recognition - Rental Revenue

Rental revenueRental revenue consists of space rentals and related fees. Management has determined that all of the Company's leases are operating leases. Substantially all leases may be terminated on a month-to-month basis and rental income is recognized ratably over the lease term using the straight-line method. Rents received in advance are deferred and recognized on a straight-line basis over the related lease term associated with the prepayment. Promotional discounts and other incentives are recognized as a reduction to rental income over the applicable lease term.

Revenue Recognition - Other Property-Related Revenue, Management Fees and Other Revenue

Other property-related revenue

Other property-related revenue primarily consists of ancillary revenues such as tenant insurance and/or tenant warranty protection-related access fees, sales of storage supplies and truck rentals which are recognized in the period earned.

The Company and certain of the Company’s PROs have tenant insurance- and/or tenant warranty protection plan-related arrangements with insurance companies and the Company’s tenants. During the three months ended March 31, 2022 and 2021, the Company recognized $4.9 million and $3.1 million, respectively, of tenant insurance and tenant warranty protection plan revenues.

The Company sells boxes, packing supplies, locks, other retail merchandise and rents moving trucks at its properties. During the three months ended March 31, 2022 and 2021, the Company recognized retail sales of $0.6 million and $0.5 million, respectively.

Management fees and other revenue

Management fees and other revenue consist of property management fees, platform fees, call center fees, acquisition fees, amounts related to the facilitation of tenant warranty protection or tenant insurance programs for certain stores in the Company's consolidated portfolio and unconsolidated real estate ventures, access fees associated with tenant insurance-related arrangements, and profit distributions from the Company's interest in a reinsurance company.

With respect to both the 2018 Joint Venture and the 2016 Joint Venture (as each is defined in Note 5), the Company provides supervisory and administrative property management services, centralized call center services, and technology platform and revenue management services to the properties in the unconsolidated real estate ventures. The property management fees are equal to 6% of monthly gross revenues and net sales revenues from the assets of the unconsolidated real estate ventures, and the platform fees are equal to $1,250 per month per unconsolidated real estate venture property. With respect to the 2016 Joint Venture only, the call center fee is equal to 1% of each of monthly gross revenues and net sales revenues from the 2016 Joint Venture properties. During the three months ended March 31, 2022 and 2021, the Company recognized property management fees, call center fees and platform fees of $3.8 million and $3.5 million, respectively.

For acquisition fees, the Company provides sourcing, underwriting and administration services to the unconsolidated real estate ventures. The 2018 Joint Venture paid the Company a $4.0 million acquisition fee related to the initial acquisition of properties by the 2018 Joint Venture (the "Initial 2018 JV Portfolio") in 2018, at the time of the Initial 2018 JV Portfolio acquisition. This fee is refundable to the 2018 Joint Venture, on a prorated basis, if the Company is removed as the managing member during the initial four year life of the 2018 Joint Venture and as such, the Company's performance obligation for this acquisition fee is satisfied over a four year period. As of March 31, 2022 and December 31, 2021, the Company had deferred revenue related to the acquisition fee of $0.3 million and $0.5 million, respectively.

The Company also earns acquisition fees for properties acquired by the unconsolidated real estate ventures subsequent to the Initial 2016 JV Portfolio and the Initial 2018 JV Portfolio. These fees are based on a percentage of the gross capitalization of the acquired assets determined by the members of the 2016 Joint Venture and the 2018 Joint Venture, and are generally earned when the unconsolidated real estate ventures obtain title and control of an acquired property. During the three months ended March 31, 2022 and 2021, the Company recognized acquisition fees of $0.2 million and $0.2 million, respectively.

The Company provides or makes available tenant insurance or tenant warranty protection programs for tenants at its properties. For certain of the properties in the Company’s consolidated portfolio and one of its unconsolidated real estate ventures that participate in tenant insurance, the Company provides such tenant insurance through the Company’s wholly-owned captive insurance company and a separate reinsurance company in which the Company has a partial ownership interest. With respect to properties in both of the Company’s unconsolidated real estate ventures, the Company receives 50% of all proceeds from tenant insurance and tenant warranty protection programs at each unconsolidated real estate venture property in exchange for facilitating the programs at those properties. During the three months ended March 31, 2022 and 2021, the Company recognized $2.4 million and $1.9 million, respectively, of revenue related to these activities.

Gain on Sale of Self Storage Properties

Gain on sale of self storage propertiesThe Company recognizes gains from disposition of facilities only upon closing in accordance with the guidance on sales of nonfinancial assets. Profit on real estate sold is recognized upon closing when all, or substantially all, of the promised consideration has been received and is nonrefundable and the Company has transferred control of the facilities to the purchaser.

Investments in Unconsolidated Real Estate Ventures

Investments in Unconsolidated Real Estate Ventures

The Company’s investments in its unconsolidated real estate ventures are recorded under the equity method of accounting in the accompanying condensed consolidated financial statements. Under the equity method, the Company’s investments in unconsolidated real estate ventures are stated at cost and adjusted for the Company’s share of net earnings or losses and reduced by distributions. Equity in earnings (losses) is recognized based on the

Company’s ownership interest in the earnings (losses) of the unconsolidated real estate ventures. The Company follows the "nature of the distribution approach" for classification of distributions from its unconsolidated real estate ventures in its condensed consolidated statements of cash flows. Under this approach, distributions are reported on the basis of the nature of the activity or activities that generated the distributions as either a return on investment, which are classified as operating cash flows, or a return of investment (e.g., proceeds from the unconsolidated real estate ventures' sale of assets) which are reported as investing cash flows.

Noncontrolling Interests

Noncontrolling Interests

All of the limited partner equity interests ("OP equity") in the operating partnership not held by the Company are reflected as noncontrolling interests. Noncontrolling interests also include ownership interests in DownREIT partnerships held by entities other than the operating partnership or its subsidiaries. In the condensed consolidated statements of operations, the Company allocates net income (loss) attributable to noncontrolling interests to arrive at net income (loss) attributable to National Storage Affiliates Trust.

For transactions that result in changes to the Company's ownership interest in its operating partnership, the carrying amount of noncontrolling interests is adjusted to reflect such changes. The difference between the fair value of the consideration received or paid and the amount by which the noncontrolling interest is adjusted is reflected as an adjustment to additional paid-in capital on the condensed consolidated balance sheets.

Allocation of Net Income (Loss)

Allocation of Net Income (Loss)

The distribution rights and priorities set forth in the operating partnership's LP Agreement differ from what is reflected by the underlying percentage ownership interests of the unitholders. Accordingly, the Company allocates GAAP income (loss) utilizing the hypothetical liquidation at book value ("HLBV") method, in which the Company allocates income or loss based on the change in each unitholders’ claim on the net assets of its operating partnership at period end after adjusting for any distributions or contributions made during such period. The HLBV method is commonly applied to equity investments where cash distribution percentages vary at different points in time and are not directly linked to an equity holder’s ownership percentage.

The HLBV method is a balance sheet-focused approach to income (loss) allocation. A calculation is prepared at each balance sheet date to determine the amount that unitholders would receive if the operating partnership were to liquidate all of its assets (at GAAP net book value) and distribute the resulting proceeds to its creditors and unitholders based on the contractually defined liquidation priorities. The difference between the calculated liquidation distribution amounts at the beginning and the end of the reporting period, after adjusting for capital contributions and distributions, is used to derive each unitholder's share of the income (loss) for the period. Due to the stated liquidation priorities and because the HLBV method incorporates non-cash items such as depreciation expense, in any given period, income or loss may be allocated disproportionately to unitholders as compared to their respective ownership percentage in the operating partnership, and net income (loss) attributable to National Storage Affiliates Trust could be more or less net income than actual cash distributions received and more or less income or loss than what may be received in the event of an actual liquidation. Additionally, the HLBV method could result in net income (or net loss) attributable to National Storage Affiliates Trust during a period when the Company reports consolidated net loss (or net income), or net income (or net loss) attributable to National Storage Affiliates Trust in excess of the Company's consolidated net income (or net loss). The computations of basic and diluted earnings (loss) per share may be materially affected by these disproportionate income (loss) allocations, resulting in volatile fluctuations of basic and diluted earnings (loss) per share.

Other Comprehensive Income (Loss)

Other Comprehensive Income (Loss)The Company has cash flow hedge derivative instruments that are measured at fair value with unrealized gains or losses recognized in other comprehensive income (loss) with a corresponding adjustment to accumulated other comprehensive income (loss) within equity, as discussed further in Note 12. Under the HLBV method of allocating income (loss) discussed above, a calculation is prepared at each balance sheet date by applying the HLBV method including, and excluding, the assets and liabilities resulting from the Company's cash flow hedge derivative instruments to determine comprehensive income (loss) attributable to National Storage Affiliates Trust. As a result of the distribution rights and priorities set forth in the operating partnership's LP Agreement, in any given period, other comprehensive income (loss) may be allocated disproportionately to unitholders as compared to their respective ownership percentage in the operating partnership and as compared to their respective allocation of net income (loss).

Restricted Cash

Restricted CashThe Company's restricted cash consists of escrowed funds deposited with financial institutions for real estate taxes, insurance and other reserves for capital improvements in accordance with the Company's loan agreements

Use of Estimates

Use of EstimatesThe preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

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SHAREHOLDERS' EQUITY AND NONCONTROLLING INTERESTS (Tables)

3 Months Ended

Mar. 31, 2022

Equity [Abstract]

Schedule of noncontrolling interests

As of March 31, 2022 and December 31, 2021, units reflecting noncontrolling interests consisted of the following:

	March 31, 2022	December 31, 2021
Series A-1 preferred units	984,861	640,047
OP units	35,385,718	31,893,105
Subordinated performance units	7,853,367	9,754,482
LTIP units	769,430	775,447
DownREIT units
DownREIT OP units	1,924,918	1,924,918
DownREIT subordinated performance units	4,337,111	4,337,111
Total	51,255,405	49,325,110

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SELF STORAGE PROPERTIES (Tables)

3 Months Ended

Mar. 31, 2022

Real Estate [Abstract]

Schedule of self storage properties

Self storage properties are summarized as follows (dollars in thousands):

	March 31, 2022		December 31, 2021
Land	$	1,044,317	$	1,028,431
Buildings and improvements	4,838,336		4,760,567
Furniture and equipment	9,753		9,190
Total self storage properties	5,892,406		5,798,188
Less accumulated depreciation	(624,368)		(578,717)
Self storage properties, net	$	5,268,038	$	5,219,471

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INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES (Tables)

3 Months Ended

Mar. 31, 2022

Equity Method Investments and Joint Ventures [Abstract]

Schedule of Condensed Financial Information of Unconsolidated Real Estate Ventures

The following table presents the combined condensed financial position of the Company's unconsolidated real estate ventures as of March 31, 2022 and December 31, 2021 (in thousands):

	March 31, 2022		December 31, 2021
ASSETS
Self storage properties, net	$	1,727,229	$	1,741,538
Other assets	26,309		23,562
Total assets	$	1,753,538	$	1,765,100
LIABILITIES AND EQUITY
Debt financing	$	1,001,608	$	1,001,378
Other liabilities	22,321		19,493
Equity	729,609		744,229
Total liabilities and equity	$	1,753,538	$	1,765,100

The following tables present the combined condensed operating information of the Company's unconsolidated real estate ventures for the three months ended March 31, 2022 and 2021 (in thousands):

	Three Months Ended March 31,
	2022		2021
Total revenue	$	48,998	$	43,695
Property operating expenses	13,809		11,788
Net operating income	35,189		31,907
Supervisory, administrative and other expenses	(3,202)		(2,882)
Depreciation and amortization	(15,382)		(15,522)
Interest expense	(10,410)		(10,405)
Acquisition and other expenses	(274)		(121)
Net income	$	5,921	$	2,977

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ACQUISITIONS AND DISPOSITIONS (Tables)

3 Months Ended

Mar. 31, 2022

Business Combination and Asset Acquisition [Abstract]

Summary of Self Storage Property Acquisitions

The following table summarizes the investment in self storage property acquisitions completed by the Company during the three months ended March 31, 2022 (dollars in thousands):

Acquisitions Closed During the Three Months Ended:	Number of Properties	Summary of Investment
		Cash and Acquisition Costs		Value of OP Equity(1)		Other Liabilities		Total
March 31, 2022	12	$	76,027	$	16,576	$	332	$	92,935

(1)Value of OP equity represents the fair value of OP units, subordinated performance units, and Series A-1 preferred units.

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OTHER ASSETS (Tables)

3 Months Ended

Mar. 31, 2022

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Schedule of Other Assets

Other assets consist of the following (dollars in thousands):

	March 31, 2022		December 31, 2021
Customer in-place leases, net of accumulated amortization of $21,104 and $14,336, respectively	$	20,480	$	29,427
Receivables:
Trade, net	6,466		6,228
PROs and other affiliates	1,781		2,878
Receivables from unconsolidated real estate ventures	5,951		4,028
Property acquisition and other deposits	6,100		800
Interest rate swaps	13,646		—
Prepaid expenses and other	8,796		9,552
Corporate furniture, equipment and other, net	1,478		1,422
Trade names	7,442		6,380
Management contracts, net of accumulated amortization of $4,522 and $4,237, respectively	12,989		10,983
Tenant reinsurance intangible, net of accumulated amortization of $1,745 and $1,504, respectively	22,296		22,537
Goodwill	8,182		8,182
Total	$	115,607	$	102,417

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DEBT FINANCING (Tables)

3 Months Ended

Mar. 31, 2022

Debt Disclosure [Abstract]

Schedule of Debt

The Company's outstanding debt as of March 31, 2022 and December 31, 2021 is summarized as follows (dollars in thousands):

	Interest Rate(1)	March 31, 2022		December 31, 2021
Credit Facility:
Revolving line of credit	1.70%	$	425,000	$	490,000
Term loan A	3.69%	125,000		125,000
Term loan B	2.86%	250,000		250,000
Term loan C	2.86%	225,000		225,000
Term loan D	3.07%	175,000		175,000
Term loan E	1.60%	125,000		125,000
2023 Term loan facility	2.83%	175,000		175,000
2028 Term loan facility	4.62%	75,000		75,000
2029 Term loan facility	4.27%	100,000		100,000
2026 Senior Unsecured Notes	2.16%	35,000		35,000
2029 Senior Unsecured Notes	3.98%	100,000		100,000
August 2030 Senior Unsecured Notes	2.99%	150,000		150,000
November 2030 Senior Unsecured Notes	2.72%	75,000		75,000
May 2031 Senior Unsecured Notes	3.00%	90,000		90,000
August 2031 Senior Unsecured Notes	4.08%	50,000		50,000
November 2031 Senior Unsecured Notes	2.81%	175,000		175,000
2032 Senior Unsecured Notes	3.09%	100,000		100,000
May 2033 Senior Unsecured Notes	3.10%	55,000		55,000
November 2033 Senior Unsecured Notes	2.96%	125,000		—
2036 Senior Unsecured Notes	3.06%	75,000		75,000
Fixed rate mortgages payable	3.82%	302,860		303,944
Total principal		3,007,860		2,948,944
Unamortized debt issuance costs and debt premium, net		(8,109)		(8,013)
Total debt		$	2,999,751	$	2,940,931

(1)Represents the effective interest rate as of March 31, 2022. Effective interest rate incorporates the stated rate plus the impact of interest rate cash flow hedges and discount and premium amortization, if applicable. For the revolving line of credit, the effective interest rate excludes fees for unused borrowings.

Schedule of Future Debt Maturities

Based on existing debt agreements in effect as of March 31, 2022, the scheduled principal and maturity payments for the Company's outstanding borrowings are presented in the table below (in thousands):

Year Ending December 31,	Scheduled Principal and Maturity Payments		Amortization of Premium and Unamortized Debt Issuance Costs		Total
Remainder of 2022	$	3,289	$	(1,709)	$	1,580
2023	376,813		(1,925)		374,888
2024	696,964		(1,553)		695,411
2025	227,185		(977)		226,208
2026	212,322		(814)		211,508
2027	212,369		(483)		211,886
Thereafter	1,278,918		(648)		1,278,270
	$	3,007,860	$	(8,109)	$	2,999,751

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EARNINGS PER SHARE (Tables)

3 Months Ended

Mar. 31, 2022

Earnings Per Share [Abstract]

Schedule of the Computation of Basic and Diluted Earnings Per Common Share

The following table sets forth the computation of basic and diluted earnings (loss) per common share for the three months ended March 31, 2022 and 2021 (in thousands, except per share amounts):

	Three Months Ended March 31,
	2022		2021
Earnings (loss) per common share - basic and diluted
Numerator
Net income	$	44,786	$	27,635
Net income attributable to noncontrolling interests	(19,558)		(6,797)
Net income attributable to National Storage Affiliates Trust	25,228		20,838
Distributions to preferred shareholders	(3,279)		(3,275)
Distributed and undistributed earnings allocated to participating securities	(14)		(11)
Net income attributable to common shareholders - basic	21,935		17,552
Effect of assumed conversion of dilutive securities	—		6,452
Net income attributable to common shareholders - diluted	$	21,935	$	24,004
Denominator
Weighted average shares outstanding - basic	91,323		71,794
Effect of dilutive securities:
Weighted average effect of outstanding forward offering agreement	—		399
Weighted average OP units outstanding	—		29,751
Weighted average DownREIT OP unit equivalents outstanding	—		1,925
Weighted average LTIP units outstanding	—		133
Weighted average subordinated performance units and DownREIT subordinated performance unit equivalents	—		19,185
Weighted average shares outstanding - diluted	91,323		123,187
Earnings (loss) per share - basic	$	0.24	$	0.24
Earnings (loss) per share - diluted	$	0.24	$	0.19

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FAIR VALUE MEASUREMENTS (Tables)

3 Months Ended

Mar. 31, 2022

Fair Value Disclosures [Abstract]

Schedule of interest rate swap derivatives measured at fair value

Information regarding the Company's interest rate swaps measured at fair value, which are classified within Level 2 of the GAAP fair value hierarchy, is presented below (dollars in thousands):

				Fair Value
	Number of Contracts	Notional Amount		Other Assets, net		Interest Rate Swap Liabilities
As of March 31, 2022
Interest Rate Swaps	19	$	1,125,000	$	13,646	$	3,821
As of December 31, 2021
Interest Rate Swaps	19	$	1,125,000	$	—	$	33,757

The following table presents the effect of our derivative instruments on our consolidated financial statements (dollars in thousands):

Fair value at December 31, 2020	$	(77,918)
Swap ineffectiveness	17
Losses on interest rate swaps reclassified into interest expense from accumulated other comprehensive loss	4,957
Unrealized losses on interest rate swaps included in accumulated other comprehensive (loss) income	20,900
Fair value at March 31, 2021	$	(52,044)
Fair value at December 31, 2021	$	(33,757)
Losses on interest rate swaps reclassified into interest expense from accumulated other comprehensive income	4,974
Unrealized gains on interest rate swaps included in accumulated other comprehensive (loss) income	38,608
Fair value at March 31, 2022	$	9,825

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ORGANIZATION AND NATURE OF OPERATIONS (Details) storage_unit in Thousands, ft² in Millions	3 Months Ended
	Mar. 31, 2022 ft² storage_unit property state metropolitan_statistical_area
Schedule of Equity Method Investments [Line Items]
Number of top metropolitan statistical areas for focus of operations | metropolitan_statistical_area	100
Number of self storage properties	1,061
Number of states in which self storage properties are located | state	42
Total rentable square feet in self storage properties | ft²	68.4
Number of storage units | storage_unit	537
Self storage properties	510
Self storage properties, remaining	374
2016 Joint Venture
Schedule of Equity Method Investments [Line Items]
Company's equity interest in unconsolidated real estate ventures (percent)	25.00%
2018 Joint Venture
Schedule of Equity Method Investments [Line Items]
Company's equity interest in unconsolidated real estate ventures (percent)	25.00%
Consolidated properties
Schedule of Equity Method Investments [Line Items]
Number of self storage properties	884
Number of states in which self storage properties are located | state	39
Total rentable square feet in self storage properties | ft²	55.7
Number of storage units | storage_unit	433
Unconsolidated properties | Joint venture | Unconsolidated real estate ventures
Schedule of Equity Method Investments [Line Items]
Number of self storage properties	177
Number of states in which self storage properties are located | state	21
Total rentable square feet in self storage properties | ft²	12.7
Number of storage units | storage_unit	104
Unconsolidated properties | Joint venture | 2016 Joint Venture
Schedule of Equity Method Investments [Line Items]
Number of self storage properties	74
Number of states in which self storage properties are located | state	13
Total rentable square feet in self storage properties | ft²	4.9
Number of storage units | storage_unit	40
Unconsolidated properties | Joint venture | 2018 Joint Venture
Schedule of Equity Method Investments [Line Items]
Number of self storage properties	103
Number of states in which self storage properties are located | state	17
Total rentable square feet in self storage properties | ft²	7.8
Number of storage units | storage_unit	64

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) $ in Thousands	Mar. 31, 2022 USD ($) property partnership	Dec. 31, 2021 USD ($) partnership property
Variable Interest Entity [Line Items]
Number of self storage properties | property	1,061
Net book value of real estate owned	$ 5,268,038	$ 5,219,471
Carrying value of fixed rate mortgages	3,007,860	2,948,944
Fixed rate mortgages payable | Fixed rate mortgages payable
Variable Interest Entity [Line Items]
Carrying value of fixed rate mortgages	$ 302,860	$ 303,944
VIE, Primary Beneficiary
Variable Interest Entity [Line Items]
Number of partnerships considered to be VIEs | partnership	22	22
Number of self storage properties | property	48	48
Net book value of real estate owned	$ 421,400	$ 425,700
VIE, Primary Beneficiary | Fixed rate mortgages payable | Fixed rate mortgages payable
Variable Interest Entity [Line Items]
Carrying value of fixed rate mortgages	$ 188,700	$ 188,700

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Revenue Recognition (Details)	3 Months Ended		12 Months Ended
	Mar. 31, 2022 USD ($) property	Mar. 31, 2021 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2021 USD ($)
Disaggregation of Revenue [Line Items]
Initial term of unconsolidated real estate venture agreements	4 years
Performance obligation period of recognition	4 years
Unconsolidated real estate ventures | property	1,061
Tenant Insurance and Tenant Warranty Protection Plan Revenues
Disaggregation of Revenue [Line Items]
Revenue	$ 4,900,000	$ 3,100,000
Retail Products and Supplies
Disaggregation of Revenue [Line Items]
Revenue	600,000	500,000
Property Management, Call Center, and Platform Fees
Disaggregation of Revenue [Line Items]
Revenue	$ 3,800,000	3,500,000
Property management fees as percent of monthly gross revenues and net sales revenue of unconsolidated real estate venture assets	6.00%
Platform fees per unconsolidated real estate venture property per month	$ 1,250
Call center fees as percent of monthly gross revenues and net sales revenue of unconsolidated real estate venture assets	1.00%
Acquisition Fees
Disaggregation of Revenue [Line Items]
Revenue	$ 200,000	200,000
Acquisition fee			$ 4,000,000
Deferred revenue related to acquisition fees	300,000			$ 500,000
Tenant Warranty Protection or Tenant Insurance
Disaggregation of Revenue [Line Items]
Revenue	$ 2,400,000	$ 1,900,000
Unconsolidated real estate ventures | property	1
Percent of total warranty protection plan proceeds received per unconsolidated real estate venture property	50.00%

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SHAREHOLDERS' EQUITY AND NONCONTROLLING INTERESTS - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
	Feb. 27, 2019	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	May 19, 2021
Class of Stock [Line Items]
Common shares of beneficial interest, par value (in dollars per share)		$ 0.01		$ 0.01
Preferred units stated value (in dollars per share)		$ 0.01		$ 0.01
Value of OP equity		$ 16,576
Common Shares
Class of Stock [Line Items]
Issuance of series A-1 preferred units (in shares)			0
Redemptions/conversions of units (in shares)		258,477	190,248
Series A-1 preferred units | NSA OP, LP
Class of Stock [Line Items]
Preferred share/unit dividend rate (percent)		6.00%
Preferred units stated value (in dollars per share)		$ 25.00
Unit conversion ratio		1
Issuance of series A-1 preferred units (in shares)		353,030
Redemptions/conversions of units (in shares)		8,216
OP units | NSA OP, LP
Class of Stock [Line Items]
Unit conversion ratio		1
Minimum conversion period (in years)		1 year
Issuance of shares/units (in shares)		3,911,260
OP units | NSA OP, LP | Common Shares
Class of Stock [Line Items]
Redemptions/conversions of units (in shares)		258,477
OP units | NSA OP, LP | Self Storage Properties
Class of Stock [Line Items]
Issuance of shares/units (in shares)		92,567
OP units | NSA OP, LP | Northwest's Right to Property Management Contracts, Brand, Intellectual Property, Certain Tangible Assets
Class of Stock [Line Items]
Number of shares issued		46,540
Conversion of units (in shares)		651,734
OP units | NSA OP, LP | Northwest Retirement
Class of Stock [Line Items]
Issuance of shares/units (in shares)		235,241
OP units | NSA OP, LP | Retirement of Northwest
Class of Stock [Line Items]
Issuance of shares/units (in shares)		3,911,260
Conversion of units (in shares)		651,234
OP units | DownREIT Partnership
Class of Stock [Line Items]
Unit conversion ratio		1
Minimum conversion period (in years)		5 years
Subordinated performance units
Class of Stock [Line Items]
Time frame prior to conversion for conversion metric (in years)		1 year
Percentage of cash available for distribution used in conversion ratio calculation		110.00%
Subordinated performance units | NSA OP, LP
Class of Stock [Line Items]
Redemptions/conversions of units (in shares)		2,078,357
Issuance of shares/units, non-voluntary (in shares)		2,078,357
Unit conversion, lock out period (in years)		2 years
Subordinated performance units | NSA OP, LP | Northwest's Right to Property Management Contracts, Brand, Intellectual Property, Certain Tangible Assets
Class of Stock [Line Items]
Issuance of shares/units (in shares)		244,792
Subordinated performance units | NSA OP, LP | Northwest Retirement
Class of Stock [Line Items]
Redemptions/conversions of units (in shares)		82,611
Subordinated performance units | NSA OP, LP | Retirement of Northwest
Class of Stock [Line Items]
Redemptions/conversions of units (in shares)		244,792
Issuance of shares/units (in shares)		15,061
Subordinated performance units | DownREIT Partnership
Class of Stock [Line Items]
Unit conversion ratio		1
Minimum conversion period (in years)		5 years
LTIP units | NSA OP, LP
Class of Stock [Line Items]
Unit conversion ratio		1
Issuance of shares/units (in shares)		111,199
Conversion of units (in shares)		117,216
At The Market Program
Class of Stock [Line Items]
Value of common and preferred shares authorized under ATM program					$ 400,000
Value of remaining available offered shares		$ 169,100			$ 31,000
Prior Sales Agreement
Class of Stock [Line Items]
Value of common and preferred shares authorized under ATM program	$ 250,000
Preferred share/unit dividend rate (percent)	6.00%
Series A preferred shares | NSA OP, LP
Class of Stock [Line Items]
Preferred units cash redemption price (in dollars per share)		$ 25.00

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SHAREHOLDERS' EQUITY AND NONCONTROLLING INTERESTS - Equity Interests (Details) - shares	Mar. 31, 2022	Dec. 31, 2021
Partnership Subsidiaries
Noncontrolling Interest [Line Items]
Outstanding equity interest (in shares)	51,255,405	49,325,110
Series A-1 preferred units | NSA OP, LP
Noncontrolling Interest [Line Items]
Outstanding equity interest (in shares)	984,861	640,047
OP units | NSA OP, LP
Noncontrolling Interest [Line Items]
Outstanding equity interest (in shares)	35,385,718	31,893,105
OP units | DownREIT Partnership
Noncontrolling Interest [Line Items]
Outstanding equity interest (in shares)	1,924,918	1,924,918
Subordinated performance units | NSA OP, LP
Noncontrolling Interest [Line Items]
Outstanding equity interest (in shares)	7,853,367	9,754,482
Subordinated performance units | DownREIT Partnership
Noncontrolling Interest [Line Items]
Outstanding equity interest (in shares)	4,337,111	4,337,111
LTIP units | NSA OP, LP
Noncontrolling Interest [Line Items]
Outstanding equity interest (in shares)	769,430	775,447

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SELF STORAGE PROPERTIES (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Real Estate [Abstract]
Land	$ 1,044,317		$ 1,028,431
Buildings and improvements	4,838,336		4,760,567
Furniture and equipment	9,753		9,190
Total self storage properties	5,892,406		5,798,188
Less accumulated depreciation	(624,368)		(578,717)
Self storage properties, net	5,268,038		$ 5,219,471
Depreciation expense related to self storage properties	$ 46,700	$ 29,400

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INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES - Narrative (Details) storage_unit in Thousands, ft² in Millions	Mar. 31, 2022 ft² storage_unit property state
Schedule of Equity Method Investments [Line Items]
Number of self storage properties | property	1,061
Rentable square feet in self storage properties | ft²	68.4
Number of storage units | storage_unit	537
Number of states in which self storage properties are located | state	42
Unconsolidated properties | Joint venture | 2018 Joint Venture
Schedule of Equity Method Investments [Line Items]
Number of self storage properties | property	103
Rentable square feet in self storage properties | ft²	7.8
Number of storage units | storage_unit	64
Number of states in which self storage properties are located | state	17
Unconsolidated properties | Joint venture | 2016 Joint Venture
Schedule of Equity Method Investments [Line Items]
Number of self storage properties | property	74
Rentable square feet in self storage properties | ft²	4.9
Number of storage units | storage_unit	40
Number of states in which self storage properties are located | state	13

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INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES - Condensed Financial Position (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020
ASSETS
Self storage properties, net	$ 5,268,038	$ 5,219,471
Other assets	115,607	102,417
Total assets	5,621,411	5,562,594
LIABILITIES AND EQUITY
Debt financing	2,999,751	2,940,931
Equity	2,510,044	2,482,455	$ 1,581,620	$ 1,430,475
Total liabilities and equity	5,621,411	5,562,594
Joint venture | Unconsolidated real estate ventures
ASSETS
Self storage properties, net	1,727,229	1,741,538
Other assets	26,309	23,562
Total assets	1,753,538	1,765,100
LIABILITIES AND EQUITY
Debt financing	1,001,608	1,001,378
Other liabilities	22,321	19,493
Equity	729,609	744,229
Total liabilities and equity	$ 1,753,538	$ 1,765,100

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INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES - Condensed Operating Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Related Party Transaction [Line Items]
Total revenue	$ 187,184	$ 122,992
Property operating expenses	49,358	34,604
Depreciation and amortization	(58,072)	(32,424)
Interest expense	(22,647)	(16,792)
Acquisition costs	(553)	(292)
Net income attributable to National Storage Affiliates Trust	25,228	20,838
Joint venture | Unconsolidated real estate ventures
Related Party Transaction [Line Items]
Total revenue	48,998	43,695
Property operating expenses	13,809	11,788
Net operating income	35,189	31,907
Supervisory, administrative and other expenses	(3,202)	(2,882)
Depreciation and amortization	(15,382)	(15,522)
Interest expense	(10,410)	(10,405)
Acquisition costs	(274)	(121)
Net income attributable to National Storage Affiliates Trust	$ 5,921	$ 2,977

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ACQUISITIONS AND DISPOSITIONS - Narrative (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022 USD ($) property shares
Asset Acquisition [Line Items]
Number of properties acquired | property	12
Estimated fair value of net assets acquired	$ 92,900
Acquisition-related costs capitalized	1,000
Value of OP equity	$ 16,576
Self storage property | property	1
Proceeds from sale of undeveloped land parcel	$ 6,200
Net gain on disposition	2,100
Real estate
Asset Acquisition [Line Items]
Recognized fair value allocated to real estate	91,200
Customer in-place leases
Asset Acquisition [Line Items]
Recognized fair value allocated to intangible assets	$ 1,700
Assets acquired from PROs | Affiliated entity
Asset Acquisition [Line Items]
Number of properties acquired | property	1
Estimated fair value of net assets acquired	$ 6,600
Northwest's Right to Property Management Contracts, Brand, Intellectual Property, Certain Tangible Assets
Asset Acquisition [Line Items]
Estimated fair value of net assets acquired	$ 3,200
Northwest's Right to Property Management Contracts, Brand, Intellectual Property, Certain Tangible Assets | OP units | NSA OP, LP
Asset Acquisition [Line Items]
Number of shares issued | shares	46,540

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ACQUISITIONS AND DISPOSITIONS - Summary of Acquisitions (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022 USD ($) property
Asset Acquisitions During Period
Number of Properties | property	12
Cash and Acquisition Costs	$ 76,027
Value of OP equity	16,576
Other Liabilities	332
Total	$ 92,935

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OTHER ASSETS - Schedule of Other Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Receivables:
Trade, net	$ 6,466	$ 6,228
PROs and other affiliates	1,781	2,878
Receivables from unconsolidated real estate ventures	5,951	4,028
Property acquisition and other deposits	6,100	800
Interest rate swaps	13,646	0
Prepaid expenses and other	8,796	9,552
Corporate furniture, equipment and other, net	1,478	1,422
Goodwill	8,182	8,182
Total	115,607	102,417
Customer in-place leases
Other Assets
Intangibles	20,480	29,427
Accumulated amortization	21,104	14,336
Management contract
Other Assets
Intangibles	12,989	10,983
Accumulated amortization	4,522	4,237
Tenant reinsurance intangible
Other Assets
Intangibles	22,296	22,537
Accumulated amortization	1,745	1,504
Trade names
Receivables:
Trade names	$ 7,442	$ 6,380

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OTHER ASSETS - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Customer in-place leases
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$ 10.7	$ 2.4
Management contract
Finite-Lived Intangible Assets [Line Items]
Amortization expense	0.2	0.3
Tenant reinsurance intangible
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$ 0.2	$ 0.1

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DEBT FINANCING - Debt Summary (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021	Nov. 09, 2021
Debt Instrument [Line Items]
Principal amount	$ 3,007,860	$ 2,948,944
Unamortized debt issuance costs and debt premium, net	(8,109)	(8,013)
Total debt	$ 2,999,751	2,940,931
Revolving line of credit | Revolving line of credit | Credit Facility
Debt Instrument [Line Items]
Interest rate (percent)	1.70%
Principal amount	$ 425,000	490,000
Unsecured debt | 2023 Term loan facility
Debt Instrument [Line Items]
Interest rate (percent)	2.83%
Principal amount	$ 175,000	175,000
Unsecured debt | 2028 Term loan facility
Debt Instrument [Line Items]
Interest rate (percent)	4.62%
Principal amount	$ 75,000	75,000
Unsecured debt | 2029 Term loan facility
Debt Instrument [Line Items]
Interest rate (percent)	4.27%
Principal amount	$ 100,000	100,000
Unsecured debt | 2026 Senior Unsecured Notes
Debt Instrument [Line Items]
Interest rate (percent)	2.16%
Principal amount	$ 35,000	35,000
Unsecured debt | 2029 Senior Unsecured Notes
Debt Instrument [Line Items]
Interest rate (percent)	3.98%
Principal amount	$ 100,000	100,000
Unsecured debt | August 2030 Senior Unsecured Notes
Debt Instrument [Line Items]
Interest rate (percent)	2.99%
Principal amount	$ 150,000	150,000
Unsecured debt | November 2030 Senior Unsecured Notes
Debt Instrument [Line Items]
Interest rate (percent)	2.72%		2.72%
Principal amount	$ 75,000	75,000	$ 75,000
Unsecured debt | May 2031 Senior Unsecured Notes
Debt Instrument [Line Items]
Interest rate (percent)	3.00%
Principal amount	$ 90,000	90,000
Unsecured debt | August 2031 Senior Unsecured Notes
Debt Instrument [Line Items]
Interest rate (percent)	4.08%
Principal amount	$ 50,000	50,000
Unsecured debt | November 2031 Senior Unsecured Notes
Debt Instrument [Line Items]
Interest rate (percent)	2.81%		2.81%
Principal amount	$ 175,000	175,000	$ 175,000
Unsecured debt | 2032 Senior Unsecured Notes
Debt Instrument [Line Items]
Interest rate (percent)	3.09%
Principal amount	$ 100,000	100,000
Unsecured debt | May 2033 Senior Unsecured Notes
Debt Instrument [Line Items]
Interest rate (percent)	3.10%
Principal amount	$ 55,000	55,000
Unsecured debt | November 2033 Senior Unsecured Notes
Debt Instrument [Line Items]
Interest rate (percent)	2.96%		2.96%
Principal amount	$ 125,000	0	$ 125,000
Unsecured debt | 2036 Senior Unsecured Notes
Debt Instrument [Line Items]
Interest rate (percent)	3.06%
Principal amount	$ 75,000	75,000
Unsecured debt | Term loan A | Credit Facility
Debt Instrument [Line Items]
Interest rate (percent)	3.69%
Principal amount	$ 125,000	125,000
Unsecured debt | Term loan B | Credit Facility
Debt Instrument [Line Items]
Interest rate (percent)	2.86%
Principal amount	$ 250,000	250,000
Unsecured debt | Term loan C | Credit Facility
Debt Instrument [Line Items]
Interest rate (percent)	2.86%
Principal amount	$ 225,000	225,000
Unsecured debt | Term loan D | Credit Facility
Debt Instrument [Line Items]
Interest rate (percent)	3.07%
Principal amount	$ 175,000	175,000
Unsecured debt | Term loan E | Credit Facility
Debt Instrument [Line Items]
Interest rate (percent)	1.60%
Principal amount	$ 125,000	125,000
Fixed rate mortgages payable | Fixed rate mortgages payable
Debt Instrument [Line Items]
Interest rate (percent)	3.82%
Principal amount	$ 302,860	$ 303,944

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DEBT FINANCING - Narrative (Details) - USD ($)	Mar. 31, 2022	Dec. 31, 2021	Nov. 09, 2021
Debt Instrument [Line Items]
Principal amount	$ 3,007,860,000	$ 2,948,944,000
Unsecured debt | Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity	1,550,000,000
Maximum borrowing capacity if expansion option is exercised	1,750,000,000
Unsecured debt | November 2030 Senior Unsecured Notes
Debt Instrument [Line Items]
Principal amount	$ 75,000,000	75,000,000	$ 75,000,000
Interest rate (percent)	2.72%		2.72%
Unsecured debt | November 2031 Senior Unsecured Notes
Debt Instrument [Line Items]
Principal amount	$ 175,000,000	175,000,000	$ 175,000,000
Interest rate (percent)	2.81%		2.81%
Unsecured debt | November 2033 Senior Unsecured Notes
Debt Instrument [Line Items]
Principal amount	$ 125,000,000	0	$ 125,000,000
Interest rate (percent)	2.96%		2.96%
Unsecured debt | November 2036 Senior Notes
Debt Instrument [Line Items]
Principal amount			$ 75,000,000
Interest rate (percent)			3.06%
Revolving line of credit | Revolving line of credit | Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 650,000,000
Revolving line of credit remaining borrowing capacity	219,300,000
Principal amount	$ 425,000,000	490,000,000
Interest rate (percent)	1.70%
Term loan A | Unsecured debt | Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 125,000,000
Principal amount	$ 125,000,000	125,000,000
Interest rate (percent)	3.69%
Term loan B | Unsecured debt | Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 250,000,000
Principal amount	$ 250,000,000	250,000,000
Interest rate (percent)	2.86%
Term loan C | Unsecured debt | Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 225,000,000
Principal amount	$ 225,000,000	225,000,000
Interest rate (percent)	2.86%
Term loan D | Unsecured debt | Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 175,000,000
Principal amount	$ 175,000,000	175,000,000
Interest rate (percent)	3.07%
Term loan E | Unsecured debt | Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 125,000,000
Principal amount	$ 125,000,000	$ 125,000,000
Interest rate (percent)	1.60%
Letter of credit | Revolving line of credit | Credit Facility
Debt Instrument [Line Items]
Letters of credit outstanding	$ 5,700,000

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DEBT FINANCING - Future Debt Obligations (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Scheduled Principal and Maturity Payments
Remainder of 2022	$ 3,289
2023	376,813
2024	696,964
2025	227,185
2026	212,322
2027	212,369
Thereafter	1,278,918
Total principal	3,007,860	$ 2,948,944
Amortization of Premium and Unamortized Debt Issuance Costs
Remainder of 2022	(1,709)
2023	(1,925)
2024	(1,553)
2025	(977)
2026	(814)
2027	(483)
Thereafter	(648)
Total unamortized debt issuance costs and debt premium, net	(8,109)	(8,013)
Total
Remainder of 2022	1,580
2023	374,888
2024	695,411
2025	226,208
2026	211,508
2027	211,886
Thereafter	1,278,270
Total debt	$ 2,999,751	$ 2,940,931

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EARNINGS PER SHARE - Basic and Diluted Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Numerator
Net income	$ 44,786	$ 27,635
Net income attributable to noncontrolling interests	(19,558)	(6,797)
Net income attributable to National Storage Affiliates Trust	25,228	20,838
Distributions to preferred shareholders	(3,279)	(3,275)
Distributed and undistributed earnings allocated to participating securities	(14)	(11)
Net income attributable to common shareholders - basic	21,935	17,552
Effect of assumed conversion of dilutive securities	0	6,452
Net income attributable to common shareholders - diluted	$ 21,935	$ 24,004
Denominator
Weighted average shares outstanding - basic (in shares)	91,323	71,794
Effect of dilutive securities:
Weighted average effect of outstanding forward offering agreement (in shares)	0	399
Weighted average OP units outstanding (in shares)	0	29,751
Weighted average DownREIT OP unit equivalents outstanding (in shares)	0	1,925
Weighted average LTIP units outstanding (in shares)	0	133
Weighted average subordinated performance units and DownREIT subordinated performance unit equivalents (in shares)	0	19,185
Weighted average shares outstanding - diluted (in shares)	91,323	123,187
Earnings (loss) per share - basic (in dollars per share)	$ 0.24	$ 0.24
Earnings (loss) per share - diluted (in dollars per share)	$ 0.24	$ 0.19

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EARNINGS PER SHARE - Narrative (Details)	3 Months Ended
	Mar. 31, 2022 shares
NSA OP, LP And DownREIT Partnership | Subordinated performance units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Unit conversion ratio	1
Minimum conversion period (in years)	2 years
NSA OP, LP | OP units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Unit conversion ratio	1
Minimum conversion period (in years)	1 year
NSA OP, LP | LTIP units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Unit conversion ratio	1
DownREIT Partnership | OP units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Unit conversion ratio	1
Minimum conversion period (in years)	5 years
DownREIT Partnership | Subordinated performance units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Unit conversion ratio	1
Minimum conversion period (in years)	5 years
LTIP units with vesting based on service or market condition
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Equity interests excluded from computation of diluted earnings per share (in shares)	413,111
LTIP units with vesting based on future acquisitions
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Equity interests excluded from computation of diluted earnings per share (in shares)	252,894
OP units, DownREIT OP units, Subordinated performance units, DownREIT subordinated performance units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Equity interests excluded from computation of diluted earnings per share (in shares)	58,300,000

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RELATED PARTY TRANSACTIONS (Details) - USD ($) $ in Thousands		3 Months Ended
	Jan. 01, 2022	Mar. 31, 2022	Mar. 31, 2021
Related Party Transaction [Line Items]
Payroll and related costs reimbursed to the PROs by the Company		$ 49,358	$ 34,604
Series NW
Related Party Transaction [Line Items]
Issuance of shares, net of offering costs (in shares)	2,078,357
OP Units
Related Party Transaction [Line Items]
Conversion of units (in shares)	3,911,260
Affiliated entity | J. Timothy Warren | Series NW
Related Party Transaction [Line Items]
Conversion of units (in shares)	7,021
Affiliated entity | J. Timothy Warren | OP Units
Related Party Transaction [Line Items]
Conversion of units (in shares)	13,213
Conversion of Stock, Amount Converted	$ 900
Affiliated entity | J. Timothy Warren's Adult Children | Series NW
Related Party Transaction [Line Items]
Conversion of units (in shares)	157,149
Affiliated entity | J. Timothy Warren's Adult Children | OP Units
Related Party Transaction [Line Items]
Number of OP Units in acquisition (in shares)	295,739
Conversion of Stock, Amount Converted	$ 20,500
Supervisory and Administrative Fee Agreement | Management | Participating Regional Operator (PRO)
Related Party Transaction [Line Items]
Supervisory and administrative fees paid to the PROs		5,300	4,200
Payroll Services | Management | Participating Regional Operator (PRO)
Related Party Transaction [Line Items]
Payroll and related costs reimbursed to the PROs by the Company		7,000	6,400
Due Diligence Costs | Management | Participating Regional Operator (PRO)
Related Party Transaction [Line Items]
Due diligence expenses payable to the PROs		$ 200	$ 300
Minimum | Supervisory and Administrative Fee Agreement | Management | Participating Regional Operator (PRO)
Related Party Transaction [Line Items]
Supervisory and administrative fee agreement of gross revenue, percent		5.00%
Maximum | Supervisory and Administrative Fee Agreement | Management | Participating Regional Operator (PRO)
Related Party Transaction [Line Items]
Supervisory and administrative fee agreement of gross revenue, percent		6.00%

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FAIR VALUE MEASUREMENTS - Interest Swap Derivatives (Details) - Interest Rate Swap - Designated as Hedging Instrument	3 Months Ended
	Mar. 31, 2022 USD ($) property	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($) property
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional amount	$ 1,125,000,000		$ 1,125,000,000
Cash Flow Hedging
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of contracts | property	19		19
Notional amount	$ 1,125,000,000		$ 1,125,000,000
Fair value, other assets, net	13,646,000		0
Fair value, interest rate swap liabilities	3,821,000		$ 33,757,000
Level 2
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis [Roll Forward]
Fair value at beginning of period	(33,757,000)	$ (77,918,000)
Swap ineffectiveness		17,000
Losses on interest rate swaps reclassified into interest expense from accumulated other comprehensive loss	4,974,000	4,957,000
Unrealized gains (losses) on interest rate swaps included in accumulated other comprehensive (loss) income	38,608,000	20,900,000
Fair value of end of period	$ 9,825,000	$ (52,044,000)

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FAIR VALUE MEASUREMENTS - Narrative (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Mar. 31, 2021 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unrealized losses	$ 2,700,000
Unrealized gains			$ 1,100,000
Fixed Rate Private Placement Notes | Unsecured debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Weighted average contractual interest rate	3.08%	3.09%
Level 2 | Weighted Average | Fixed Rate Private Placement Notes | Measurement Input, Discount Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Weighted average market interest rate	0.0396	0.0281
Level 2 | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed rate mortgages, fair value disclosure	$ 301,800,000	$ 319,900,000
Weighted average market interest rate (percent)	4.03%	2.55%
Weighted average contractual interest rate (percent)	4.11%	4.12%
Estimate of Fair Value Measurement
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Private placement notes	$ 961,900,000	$ 931,100,000
Reported Value Measurement
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Private placement notes	1,030,000,000.00	905,000,000
Fixed rate mortgages, fair value disclosure	302,900,000	303,900,000
Designated as Hedging Instrument | Interest Rate Swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional amount	$ 1,125,000,000	$ 1,125,000,000
Weighted average remaining term	2 years 7 months 6 days

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SUBSEQUENT EVENTS (Details) $ in Thousands		3 Months Ended
	Apr. 12, 2022 USD ($) property	Mar. 31, 2022 USD ($)
Subsequent Event [Line Items]
Consideration in acquisition transaction		$ 92,935
Subsequent Event
Subsequent Event [Line Items]
Number of properties acquired | property	7
Consideration in acquisition transaction	$ 208,000
Company contributions	$ 52,000