Global Self Storage, Inc.
SELF- Exchange
- Nasdaq
- Industry
- Real Estate Investment Trusts
- SEC CIK
- 0001031235
In the last 90 days, Global Self Storage, Inc. insiders filed 8 open-market purchases and 0 sales; 51 institutions reported holding it in 13F filings for Q2 2026, worth $17.5M in total; no superinvestor holds it.
Open-market trades, last 90 days
Open-market purchases (P) and sales (S) by Global Self Storage, Inc. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.
- Open-market buys
- 8 filings
- 3 insiders, $465.8K in total
- Open-market sells
- 0 filings
- Insiders trading
- 3
- Net value
- +$465.8K
- Purchases minus sales
Insider roster
Directors, officers and 10% owners who have filed a Form 4 for Global Self Storage, Inc., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.
| Name | Title | Last reported holding | Last filing | Filings, past year |
|---|---|---|---|---|
| Winmill Mark Campbell | President and CEO | 372,582 | Sep 11, 2026 | 4 |
| Winmill & Co. Inc | Other: See "Explanation of Responses" | 228,512 | Aug 26, 2026 | 13 |
| Burke Russell E III | Director | 40,002 | Aug 14, 2026 | 5 |
| Zachary William Chester | Director | 18,296 | Aug 13, 2026 | 4 |
| OMalley Thomas | Chief Financial Officer | 91,694 | Mar 25, 2026 | 1 |
| Kamerman Russell | Assistant General Counsel | 5,925 | Mar 25, 2026 | 1 |
| Klimoski Donald II | General Counsel | 97,554 | Mar 25, 2026 | 2 |
| Carroll Sally Coonrad | Director | 3,776 | May 22, 2025 | 0 |
| Tuxis Corp | Other: See "Explanation of Responses" | 303,758 | May 19, 2025 | 0 |
| Langa George B | Director | 3,547 | Nov 29, 2022 | 0 |
Insider trades
Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Sep 11, 2026 (view filing)4:29 PM ET | Sep 9-10 | 2 days | Winmill Mark CampbellPresident and CEO | PPurchase | +4.00K | $5.16 | +$20.6K | +1.1%372.6K after | 4 lots |