Transaction · 0001672825-26-000009

Mueller David J

Mueller David J, DIR, reported an open-market or private sale at SmartStop Self Storage REIT, Inc. involving 425.000000 shares for an estimated $14441.50. Reported holdings after the transaction were 3790.000000 shares. The stored filing text includes a detected 10b5-1 reference.

Open-market sellSEC transaction code SDIR
SMASmartStop Self Storage REIT, Inc.
Trade date
Oct 16, 2026
Filing date
Oct 19, 2026
View on SEC Insider profile
Estimated value-$14.4kShares × reported price
Shares traded425$33.98 per share
Holdings after3.79kDirect
% of reported position traded10.08%This security and ownership context
How reported position traded is calculated

Shares sold ÷ (holdings after + shares sold). Estimated position before: 4,215 shares.

Row-level estimate for this security and ownership context, not the insider’s complete portfolio. Joint ownership, other transactions in the filing, amendments and footnotes can affect interpretation.

SMA price since this filing

Daily closing prices, with the filing date and available return windows
SMA · Daily closing priceLoading daily prices…
Filing dateReturn windows appear as prices become available.
Pre-filing1mo ago -5.5%1w ago -3.9%1d ago -0.6%
Returns since7d30d90d180d1y

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative
Type
Sell
Code S
Identifier
0001672825-26-000009
Common Stock
Transaction date
Oct 16, 2026
Filed Oct 19, 2026, 08:49 PM · 3d delay
Shares
425 sh
$33.98 per share
Estimated value
-$14.4k
Computed from shares × price
Holdings after
3,790 sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $100kLarge $1.00M
Direct Ownership 10b5-1 Detected
Filing-only score

-4 points

Compact filing score computed from stored Form 4 facts. Version v1.

Neutral filing signal

This filing is broadly neutral on the filing-only scale. The Form 4 facts do not strongly tilt positive or negative.

How this score is calculated
  • direct_ownership+6 points

    direct_or_indirect_ownership = D

    Direct ownership reports the insider's personal stake.
  • tenb5_1_detected-10 points

    is_10b5_1 = true

    Stored filing content includes detected 10b5-1 language.
Read the scoring methodology

Signed filing-only points, not a probability or expected return. Version v1.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

No officer title

Officer NoDirector Yes10% NoOther No
Footnotes & amended
  1. F1

    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. F2

    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…

  3. F3

    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 directo…

  4. F4

    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, subje…

Original filing · 0001672825-26-000009
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