Form 4: Winmill & Co. Increases Stake in Global Self Storage

Winmill & Co. Inc. reported open market purchases of Global Self Storage, Inc. common stock, increasing its beneficial ownership to 131,817 shares.

Summary

• Winmill & Co. Inc., a 10% owner and affiliate of Global Self Storage, Inc. (SELF), acquired additional common stock through open market purchases.
• On November 21, 2025, Winmill & Co. Inc. purchased 6,226 shares of common stock at a price of $5.0872 per share.
• Following this transaction, the reporting person's beneficial ownership increased to 127,753 shares.
• On November 24, 2025, an additional 4,064 shares of common stock were acquired at a price of $5.1437 per share.
• After both transactions, Winmill & Co. Inc. beneficially owns a total of 131,817 shares of Global Self Storage, Inc. common stock.
• The Winmill Family Trust owns all voting stock of Winmill & Co. Inc., and its trustees (Thomas B. Winmill, Mark C. Winmill, William Winmill, and Woodworth Winmill) may be deemed to have indirect beneficial ownership, though they and the Trust disclaim such ownership.

Sentiment

Score: 7

Explanation: The sentiment is positive due to a significant shareholder increasing their stake in the company through open market purchases, which often signals confidence in the company's valuation and future prospects.

Positives

• A significant shareholder, Winmill & Co. Inc., increased its stake in Global Self Storage, Inc., potentially signaling confidence in the company's future prospects.
• The purchases were made in the open market, indicating a direct investment decision by the reporting person.

Future Outlook

This filing does not contain forward-looking statements or guidance regarding the company's future performance or outlook.

Management Comments

• 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.

Industry Context

Insider buying, such as reported here, can sometimes be interpreted by the market as a positive signal, suggesting that those with intimate knowledge of the company believe its stock is undervalued or poised for growth, which can influence broader investor sentiment within the self-storage industry.

Related Party Transactions

• The reporting person, Winmill & Co. Inc., is wholly owned by the Winmill Family Trust. The trustees of the Winmill Family Trust (Thomas B. Winmill, Mark C. Winmill, William Winmill, and Woodworth Winmill) may be deemed to have indirect beneficial ownership of the shares held by Winmill & Co. Inc., although they and the Trust disclaim such beneficial ownership.

Stakeholder Impact

• Shareholders may view the increased stake by a major owner as a vote of confidence, potentially leading to positive sentiment and increased investor interest.
• The transactions do not directly impact employees, customers, suppliers, or creditors.

Key Dates

Recommendation

The open market purchases by a significant shareholder and affiliate, Winmill & Co. Inc., suggest that those closely associated with Global Self Storage, Inc. perceive the stock as undervalued or expect positive future performance. Insider buying is generally considered a bullish signal, indicating confidence from informed parties, which could warrant a 'buy' recommendation for investors looking for potential upside.

Keywords

Global Self Storage, SELF, Winmill & Co., insider buying, beneficial ownership, common stock, Form 4, equity purchase