[Form 4] SmartStop Self Storage REIT, Inc. Insider Trading Activity

Rhea-AI Filing Summary

SmartStop Self Storage REIT (SMA) reported an insider transaction by its General Counsel and Secretary. On 11/14/2025, the reporting person executed a sale (Code S) of 458 shares of Common Stock at $32.85 per share, and now directly holds 1,613 shares.

In addition to common shares, the filing lists derivative interests linked to potential Common Stock on a one-for-one basis via the operating partnership. These include 29,319 Long-Term Incentive Plan (LTIP) Units that vest ratably over four years from the first anniversary of issuance, 11,820.99 LTIP Units vesting ratably beginning December 31 of the grant year, and 9,515.65 LTIP Units where issuance upon vesting depends on performance. The report also shows 12,376.5 Class A‑1 Units, which are redeemable at the issuer’s election for Common Stock on a one‑for‑one basis or the cash value of those shares.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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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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 for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Look Nicholas

(Last) (First) (Middle)

10 TERRACE ROAD

(Street)

LADERA RANCH CA 92694

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
SmartStop Self Storage REIT, Inc. [ SMA ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	General Counsel and Secretary

3. Date of Earliest Transaction (Month/Day/Year)
11/14/2025

4. If Amendment, Date of 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

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 Stock	11/14/2025		S		458	D	$32.85	1,613(1)	D

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 Securities Underlying Derivative Security (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: 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
Long-Term Incentive Plan Units(2)	$0(2)							(3)	(3)	Common Stock	29,319		29,319(3)	D
Long-Term Incentive Plan Units(2)	$0(2)							(4)	(4)	Common Stock	11,820.99		11,820.99(4)	D
Long-Term Incentive Plan Units(2)	$0(2)							(5)	(5)	Common Stock	9,515.65		9,515.65(5)	D
Class A-1 Units(6)	$0(6)							(6)	(6)	Common Stock	12,376.5		12,376.5(7)	D

Explanation of Responses:

1. Includes shares of Common Stock previously reported as being owned by the Reporting Person, less .34 shares of Common Stock that were redeemed by the Issuer in connection with a fractional share redemption conducted by the Issuer with respect to its outstanding Common Stock as of July 30, 2025.

2. Represents long-term incentive plan units ("LTIP Units") of SmartStop OP, L.P., the Issuer's operating partnership (the "Operating Partnership"). Vested LTIP Units are convertible into common units of the Operating Partnership ("Common Units"). Common Units are redeemable by the holder for, at the election of the Issuer, shares of the Issuer's Common Stock on a one-for-one basis or the cash value of such shares.

3. Represents 29,319 LTIP Units issued to the Reporting Person pursuant to the Issuer's incentive plan, which LTIP Units vest ratably over four years commencing on the first anniversary of the issuance thereof, subject to the Reporting Person's continued employment or service through each vesting date.

4. Represents 11,820.99 LTIP Units previously reported as being owned by the Reporting Person. The LTIP Units vest ratably over a four-year period commencing on December 31 of the year of grant, subject to the Reporting Person's continued employment or service through each vesting date.

5. Represents 9,515.65 LTIP Units previously reported as being owned by the Reporting Person, which number is equal to 200% of the target number of LTIP Units to be issued upon vesting. The actual number of LTIP Units to be issued upon vesting can range from 0% to 100% of the number of LTIP Units reported, based on achievement of specified performance measures.

6. Represents Class A-1 limited partnership units ("Class A-1 Units") of the Operating Partnership. Class A-I Units are redeemable by the holder for, at the election of the Issuer, shares of Common Stock of the Issuer on a one-for-one basis or the cash value of such shares.

7. Represents 12,376.50 Class A-1 Units previously reported as being owned by the Reporting Person.

	/s/ Nicholas Look	11/14/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did SmartStop (SMA) report?

A sale of 458 Common Stock shares at $32.85 on 11/14/2025 (Transaction Code S).

How many SmartStop shares does the insider now directly own?

Following the transaction, the reporting person directly owns 1,613 Common Stock shares.

What is the insider’s role at SmartStop (SMA)?

The reporting person is an Officer, serving as General Counsel and Secretary.

What derivative holdings are disclosed in the Form 4 for SMA?

Listed derivative interests include 29,319 LTIP Units, 11,820.99 LTIP Units, 9,515.65 LTIP Units, and 12,376.5 Class A‑1 Units.

How do LTIP Units and Class A‑1 Units relate to SMA common stock?

Vested LTIP Units convert to Operating Partnership common units, redeemable for Common Stock one‑for‑one or cash at the issuer’s election. Class A‑1 Units are similarly redeemable one‑for‑one or for cash.

Are the LTIP Units time- or performance-based?

The filing shows time‑based vesting for some LTIP Units and a performance‑based award where actual issuance can range from 0% to 100% of the reported number.