WINMILL & CO. INC - 13 Aug 2026 Form 4 Insider Report for Global Self Storage, Inc. (SELF)

Reporting relationship: Other*
Issuer ticker: SELF
Reported as of: 13 Aug 2026
Net transaction value: +$60,788
SEC form: 4
Accepted by SEC: 14 Aug 2026, 16:19:28 UTC
Prior SEC filing: 12 Aug 2026
Source filing: View source filing
Reporting owner signature: Donald Klimoski, on behalf of Winmill & Co. Incorporated

Key filing fact

WINMILL & CO. INC filed Form 4 for Global Self Storage, Inc. (SELF) on 14 Aug 2026.

Key facts

This page summarizes WINMILL & CO. INC's Form 4 filing for Global Self Storage, Inc. (SELF).
2 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 14 Aug 2026, 16:19.

Change

Previous filing in this sequence was filed on 12 Aug 2026.
Current net transaction value: +$60,788.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0000052234 Primary reporting owner

WINMILL & CO. INC

Relationship: Other*
Address: 17 OLD DREWSVILLE RD, WALPOLE
Signature: Donald Klimoski, on behalf of Winmill & Co. Incorporated
Signature date: 14 Aug 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

SELF transaction

Common Stock

Purchase

Transaction value: $29,277
Shares: +5,629
Change %: +3.5%
Price: $5.20
Shares after: 165,405
Date: 13 Aug 2026
Ownership: Direct

SELF transaction

Common Stock

Purchase

Transaction value: $31,511
Shares: +6,029
Change %: +3.6%
Price: $5.23
Shares after: 171,434
Date: 14 Aug 2026
Ownership: Direct

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

SEC remarks

The Reporting Person may be deemed to be an affiliate of the Issuer. The Winmill Family Trust owns all of the voting stock of the Reporting Person. Thomas B. Winmill, Mark C. Winmill, William Winmill, and Woodworth Winmill are trustees of the Winmill Family Trust and may be deemed to have indirect beneficial ownership of the Reporting Person's shares as a result of their status as controlling persons of the Winmill Family Trust and the Reporting Person. Each of Thomas B. Winmill, Mark C. Winmill, William Winmill, Woodworth Winmill, and the Winmill Family Trust disclaims beneficial ownership of these shares.