FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b). Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * Allan Warren 2. Issuer Name and Ticker or Trading Symbol National Storage Affiliates Trust [NSA] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O NATIONAL STORAGE AFFILIATES TRUST, 8400 EAST PRENTICE AVENUE, 9TH FLOOR 3. Date of Earliest Transaction (Month/Day/Year) 07/22/2026 (Street) GREENWOOD VILLAGE, CO 80111 4. If Amendment, Date Original Filed (Month/Day/Year) 6. Individual or Joint/Group Filing (Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common shares of beneficial interest, $0.01 par value(1) 07/22/2026 D 4,762 D (1) 0 (1) I See footnote(2)

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

LTIP Units(1)(3)

(1)(3)(4)(5)

07/22/2026

C

1,170(1)(3)

(1)(3)(4)(5)

(6)

Class A OP Units(4)

1,170(1)(3)

(1)(3)

0 (1)(3)(4)

I

See footnote(2)

Class A OP Units(4)(5)

(4)

07/22/2026

D

1,298,706(4)(5)(7)

(4)

(6)

Common shares of beneficial interest, $0.01 par value

1,298,706(4)(5)

(4)(5)(7)

0 (4)(5)(7)

I

See footnote(2)

Series A-1 Preferred Units(8)

(8)

07/22/2026

D

4,490(8)

(8)

(6)

Series A Preferred Shares

4,490(8)

(8)

0 (8)

I

See footnote(2)

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Allan Warren C/O NATIONAL STORAGE AFFILIATES TRUST 8400 EAST PRENTICE AVENUE, 9TH FLOOR GREENWOOD VILLAGE, CO 80111	X

Signatures

/s/ Warren W. Allan, by Zoya F. Afridi, his Attorney-in-fact		07/22/2026
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Pursuant to the Agreement and Plan of Merger, dated as of March 16, 2026 (the "Merger Agreement"), between the Issuer, Public Storage and certain other parties, common shares of beneficial interest, $0.01 par value of the Issuer, inclusive of restricted shares, were converted into the right to receive 0.1400 (the "Exchange Ratio") newly issued common shares of beneficial interest, par value $0.10 per share, of Public Storage and cash in lieu of any fractional shares.
(2)	Held by Allan Revocable Living Trust TTEE Warren Allan U/A/D 9/29/1990 for which the Reporting Person has or shares voting and/or investment power. This filing shall not be deemed to be an admission that the Reporting Person is the beneficial owner of any of the securities reported herein, and the Reporting Person disclaims beneficial ownership of such securities except to the extent of the Reporting Person's pecuniary interest therein.
(3)	Pursuant to the Merger Agreement, each outstanding and unvested, time-based LTIP Unit vested in full immediately prior to the effective time of the merger of a subsidiary of Public Storage into NSA OP, LP (the "Partnership") (such merger, the "Partnership Merger").
(4)	At the effective time of the Partnership Merger, each vested LTIP Unit that was eligible for conversion was converted into one Class A unit of limited partnership interest in the Partnership ("Class A OP Unit") in accordance with the Merger Agreement.
(5)	Pursuant to the Merger Agreement, each Class A OP Unit issued and outstanding immediately prior to the effective time of the Partnership Merger was (i) automatically converted into the right to receive a number of newly issued common units in Public Storage OP, L.P., equal to the Exchange Ratio or (ii), at the election of holders of Class A OP Units, redeemed in exchange for one newly issued unit in NSA OP JV, LLC which holds 80% of the equity of the joint venture with Public Storage that holds certain identified real estate assets contributed by the Partnership.
(6)	N/A.
(7)	Includes certain LTIP Units previously reported on a fully converted basis, as Class A OP Units.
(8)	Pursuant to the Merger Agreement, each 6.000% Series A-1 cumulative redeemable preferred unit of limited partnership interest in the Partnership issued and outstanding as of immediately prior to the effective time of the Partnership Merger was converted into the right to receive one unit of a corresponding class or series of newly issued preferred units of Public Storage OP, L.P.

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