Mueller David J 4

What Happened

• David J. Mueller, a director of SmartStop Self Storage REIT, sold 425 shares of the company's common stock on March 16, 2026, at $32.81 per share for total proceeds of about $13,944. This was a sale (not a purchase) and is often a routine disposition rather than a signal of company outlook.

Key Details

• Transaction date and price: 2026-03-16 — 425 shares sold at $32.81 per share.
• Total value: Approximately $13,944.
• Shares owned after transaction: Not specified in the provided filing excerpt.
• Filing timeliness: Form 4 filed on 2026-03-17 (appears timely).
• Notable footnote: The sale was effected pursuant to a Rule 10b5-1 trading plan adopted by Mueller on December 15, 2025 (Footnote F1).

Context

• The filing also references LTIP Units of the operating partnership (Footnotes F2–F4). Vested LTIP Units convert into common units which may be redeemable for SmartStop common stock or cash. The filer previously reported owning 7,234.25 LTIP Units (F3) and 9,598 LTIP Units (F4) — totaling 16,832.25 LTIP Units — which have varying vesting schedules. These details describe long-term incentive holdings and vesting, not an immediate market purchase or sale.