SEC Form 4 · accession 0001672825-26-000004
SmartStop Self Storage REIT, Inc. · SMA
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
David J Mueller
Director
Period of report
Jun 16, 2026
Accepted (ET)
Jun 17, 2026 · 8:23 pm EDT
Rule 10b5-1 plan
yes — trade under a plan
Issuer CIK
0001585389
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common Stock | Jun 16, 2026 | S | 425 | $32.44 | D | 5,490 | D |
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Long-Term Incentive Plan UnitsF2,F3 | $0.00 | holding | — | — | — | — | — | Common Stock | 7,234 | 7,234 | D |
| Long-Term Incentive Plan UnitsF2,F4 | $0.00 | holding | — | — | — | — | — | Common Stock | 9,598 | 9,598 | D |
Explanation of responses
- F1The 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.
- F2Represents 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.
- F3Represents 7,234.25 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.
- F4Represents 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.