STOCK TITAN

SmartStop Self Storage REIT (NYSE: SMA) insider sells 425 shares under 10b5-1

Filing Impact
(Neutral)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

SmartStop Self Storage REIT, Inc. director David J. Mueller reported an open-market sale of 425 shares of Common Stock at $33.38 per share on July 16, 2026, under a pre-arranged Rule 10b5-1 trading plan. After the sale, he directly holds 5,065 Common shares plus Long-Term Incentive Plan Units representing 9,598 and 10,464.25 underlying Common shares that vest over time.

Positive

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Insider Mueller David J
Role Director
Sold 425 shs ($14K)
Type Security Shares Price Value
Sale Common Stock 425 $33.38 $14K
holding Long-Term Incentive Plan Units -- -- --
holding Long-Term Incentive Plan Units -- -- --
Holdings After Transaction: Common Stock — 5,065 shares (Direct); Long-Term Incentive Plan Units — 10,464.25 shares (Direct)
Footnotes (1)
  1. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 15, 2025. 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. Represents 10,464.25 LTIP Units previously reported as being owned by the Reporting Person. The LTIP Units were issued to the Reporting Person in connection with his reelection to the board of directors and vest one year from each such reelection. Represents 9,598 LTIP Units previously reported as being owned by the Reporting Person, 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.
Shares sold 425 shares Open-market sale of Common Stock on July 16, 2026
Sale price $33.38 per share Price for the 425 Common shares sold
Common shares after transaction 5,065 shares Direct Common Stock holdings following the sale
LTIP underlying shares block 1 9,598 shares Underlying Common Stock for one LTIP Unit grant, vesting over four years
LTIP underlying shares block 2 10,464.25 shares Underlying Common Stock for LTIP Units tied to board reelection
LTIP exercise price $0.0000 Conversion or exercise price of Long-Term Incentive Plan Units
Rule 10b5-1 plan adoption date December 15, 2025 Date Mueller adopted the trading plan used for the sale
Rule 10b5-1 trading plan regulatory
"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan"
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
Long-Term Incentive Plan Units financial
"Represents long-term incentive plan units ("LTIP Units") of SmartStop OP, L.P."
Operating Partnership financial
"LTIP Units of SmartStop OP, L.P., the Issuer's operating partnership (the "Operating Partnership")"
An operating partnership is a separate legal entity set up to own and run a company’s core assets and day-to-day businesses, while investors hold interests indirectly through the parent company. Think of it like a dedicated garage that actually stores and services the cars while the owner keeps the dealership; it matters to investors because it affects how income, taxes, liability and voting rights are allocated and therefore can influence distributions and risk.
Common Units financial
"Vested LTIP Units are convertible into common units of the Operating Partnership ("Common Units")"
Common units are the basic ownership stakes in a company, limited partnership, or trust that function like common stock: they give holders a claim on profits and often voting rights. Think of them as the ordinary seats at a table—the most directly affected by the business’s success or failure, so they typically offer higher upside but carry greater risk than preferred claims or creditors, which matters to investors evaluating potential return and safety.
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FAQ

What did SmartStop Self Storage REIT (SMA) director David J. Mueller report in this Form 4?

David J. Mueller reported an open-market sale of 425 shares of SmartStop Self Storage REIT Common Stock at $33.38 per share on July 16, 2026, executed under a pre-arranged Rule 10b5-1 trading plan adopted on December 15, 2025.

How many SmartStop (SMA) shares did David J. Mueller sell and at what price?

He sold 425 shares of SmartStop Self Storage REIT Common Stock at an average price of $33.38 per share. The transaction was classified as an open-market or private sale and was carried out under a Rule 10b5-1 trading arrangement.

How many SmartStop Self Storage REIT (SMA) shares does Mueller own after the reported sale?

Following the reported transaction, David J. Mueller directly owns 5,065 shares of SmartStop Self Storage REIT Common Stock. In addition, he holds long-term incentive plan units that are ultimately convertible into Common Stock as they vest over time.

What long-term incentive plan units does David J. Mueller hold in SmartStop (SMA)?

Mueller holds Long-Term Incentive Plan Units tied to 9,598 and 10,464.25 underlying Common shares. These LTIP Units were granted in connection with board service and vest over specified periods, becoming convertible into Operating Partnership Common Units and then Common Stock.

Are the SmartStop (SMA) LTIP Units held by David J. Mueller convertible into Common Stock?

Yes. The LTIP Units are convertible into Common Units of the operating partnership, which are redeemable for either shares of Common Stock on a one-for-one basis or the cash value of such shares, at the issuer’s election.

Was Mueller’s sale of SmartStop (SMA) shares made under a Rule 10b5-1 trading plan?

Yes. The footnotes state the sales were effected pursuant to a Rule 10b5-1 trading plan adopted by David J. Mueller on December 15, 2025, indicating the trades were pre-arranged rather than opportunistic discretionary sales.
SEC Form 4
FORM 4UNITED 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
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
X
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*
Mueller David J

(Last)(First)(Middle)
10 TERRACE ROAD

(Street)
LADERA RANCH CALIFORNIA 92694

(City)(State)(Zip)

UNITED STATES

(Country)
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)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
07/16/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

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)
CodeVAmount(A) or (D)Price
Common Stock07/16/2026S(1)425D$33.385,065D
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Long-Term Incentive Plan Units(2)$0(2) (3) (3)Common Stock10,464.2510,464.25(3)D
Long-Term Incentive Plan Units(2)$0(2) (4) (4)Common Stock9,5989,598(4)D
Explanation of Responses:
1. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 15, 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 10,464.25 LTIP Units previously reported as being owned by the Reporting Person. The LTIP Units were issued to the Reporting Person in connection with his reelection to the board of directors and vest one year from each such reelection.
4. Represents 9,598 LTIP Units previously reported as being owned by the Reporting Person, 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.
/s/ David J. Mueller07/16/2026
** Signature of Reporting PersonDate
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.
* Form 4: SEC 1474 (03-26)