9 insiders reported 58 Form 4 transactions for Global Self Storage, Inc. (SELF) over the past 18 months (most recent 2026-05-15). Recent activity: WINMILL MARK CAMPBELL (President and CEO) Buy 4,000 shares, BURKE RUSSELL E III (Director) Buy 94 shares, Zachary William Chester (Director) Buy 94 shares, WINMILL MARK CAMPBELL (President and CEO) Buy 12,672 shares, WINMILL MARK CAMPBELL (President and CEO) Buy 12,672 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-15 | WINMILL MARK CAMPBELL | President and CEO | Buy | 4,000 | $21,320 |
| 2026-05-14 | BURKE RUSSELL E III | Director | Buy | 94 | $499 |
| 2026-05-14 | Zachary William Chester | Director | Buy | 94 | $499 |
| 2026-03-25 | WINMILL MARK CAMPBELL | President and CEO | Buy | 12,672 | $64,374 |
| 2026-03-25 | WINMILL MARK CAMPBELL | President and CEO | Buy | 12,672 | $64,627 |
| 2026-03-25 | OMalley Thomas | Chief Financial Officer | Buy | 5,527 | $28,077 |
| 2026-03-25 | OMalley Thomas | Chief Financial Officer | Buy | 5,527 | $28,188 |
| 2026-03-25 | Klimoski Donald II | General Counsel | Buy | 5,527 | $28,077 |
| 2026-03-25 | Klimoski Donald II | General Counsel | Buy | 5,527 | $28,188 |
| 2026-03-25 | Kamerman Russell | Assistant General Counsel | Buy | 500 | $2,550 |
| 2025-12-05 | WINMILL MARK CAMPBELL | President and CEO | Buy | 800 | $4,040 |
| 2025-12-05 | WINMILL MARK CAMPBELL | President and CEO | Buy | 6,000 | $30,840 |
| 2025-12-05 | WINMILL MARK CAMPBELL | President and CEO | Buy | 6,000 | $30,780 |
| 2025-12-05 | WINMILL MARK CAMPBELL | President and CEO | Buy | 3,600 | $18,324 |
| 2025-12-02 | Klimoski Donald II | General Counsel | Buy | 446 | $2,252 |
| 2025-12-01 | WINMILL & CO. INC | Insider | Buy | 3,342 | $17,245 |
| 2025-12-01 | WINMILL & CO. INC | Insider | Buy | 3,062 | $15,861 |
| 2025-11-26 | WINMILL & CO. INC | Insider | Buy | 4,547 | $23,553 |
| 2025-11-26 | WINMILL & CO. INC | Insider | Buy | 4,873 | $25,193 |
| 2025-11-24 | WINMILL & CO. INC | Insider | Buy | 6,226 | $31,690 |
| 2025-11-24 | WINMILL & CO. INC | Insider | Buy | 4,064 | $20,889 |
| 2025-11-20 | WINMILL & CO. INC | Insider | Buy | 6,226 | $31,939 |
| 2025-11-20 | WINMILL & CO. INC | Insider | Buy | 5,870 | $29,820 |
| 2025-11-18 | WINMILL & CO. INC | Insider | Buy | 6,226 | $31,877 |
| 2025-11-18 | WINMILL & CO. INC | Insider | Buy | 5,618 | $28,989 |
Source: SEC Form 4 filings · as of 2026-05-15