🕵️ Global SELF Storage, Inc. ($SELF)
SEC insider & ownership activity, last 12 months · CIK 1031235 · every row links its SEC filing
Over the last 12 months insiders bought $941K with no open-market selling against it. Winmill & Co. Inc bought $804K (Nov–Aug). Mark Campbell Winmill added 7.3% → 8.4%; Winmill & Co. Incorporated added 4.2% → 5.2%. No red-flag 8-Ks in the window.
Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
4 buyers, $941K (37 lots) · 0 sellers, $0 (0 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Winmill & Co. Inc | 26 | $804K | 0 | – | Aug 26, 2026 |
| Winmill Mark Campbell | 9 | $126K | 0 | – | Sep 10, 2026 |
| Russell E. Burke III | 1 | $8K | 0 | – | Aug 13, 2026 |
| Klimoski Donald II | 1 | $2K | 0 | – | Dec 2, 2025 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Mark Campbell Winmill | 8.4% | 13D | Dec 3, 2025 | filing ↗ | |
| Winmill Family Trust | 5.2% | 13D | Dec 3, 2025 | filing ↗ | |
| Winmill & Co. Incorporated | 5.2% | 13D | Dec 3, 2025 | filing ↗ | |
| Thomas Bassett Winmill | 5.2% | 13D | Dec 3, 2025 | filing ↗ |
Planned insider sales (Form 144)
No sale notices filed in the last 12 months.
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Earnings (2.02) | Aug 7, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Aug 7, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 7, 2026 | filing ↗ |
| Shareholder vote (5.07) | Jun 16, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 16, 2026 | filing ↗ |
| Earnings (2.02) | May 8, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | May 8, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 8, 2026 | filing ↗ |
| Earnings (2.02) | Mar 25, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Mar 25, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Mar 25, 2026 | filing ↗ |
| Officer/director changes (5.02) | Dec 19, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Dec 19, 2025 | filing ↗ |
| Earnings (2.02) | Nov 7, 2025 | filing ↗ |
| Reg FD disclosure (7.01) | Nov 7, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 7, 2025 | filing ↗ |