Form4insider filings, from the source

Company · CIK 0001585389 · SIC 6798 — Real Estate Investment Trusts · NYSE

SmartStop Self Storage REIT, Inc. · SMA

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $0 · 0sales $77k · 4net −$77k
$10k$10k$100k$100k$1M$1MbuyssalesJun 28Jul 13Jul 28Aug 13Aug 28Sep 13Sep 28

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 16, 2026 SForm 4 →Sep 17, 4:52 pm EDTDavid J MuellerDirector425$32.05$13,6214,215−9.16%10b5-1
Aug 17, 2026 SForm 4 →Aug 18, 4:43 pm EDTDavid J MuellerDirector425$33.70$14,3234,640−8.39%10b5-1
Aug 14, 2026 SForm 4 →Aug 18, 4:36 pm EDTNicholas LookGeneral Counsel and Secretary1,025$34.36$35,219588−63.5%
Jul 16, 2026 SForm 4 →Jul 16, 5:14 pm EDTDavid J MuellerDirector425$33.38$14,1875,065−7.74%10b5-1

Reported at this company — derivatives (options, RSUs, warrants)

No reported derivative activity in this period.