Global Self Storage, Inc. — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| WINMILL MARK CAMPBELL | President and CEO | Purchase | 6,000 | $5.14 | $30,840 | 334,838 | Dec 5, 2025 |
| Klimoski Donald II | General Counsel | Purchase | 446 | $5.05 | $2,252 | 86,500 | Dec 2, 2025 |
| WINMILL & CO. INC | — | Purchase | 3,062 | $5.18 | $15,861 | 147,641 | Nov 28, 2025 |
| WINMILL & CO. INC | — | Purchase | 4,547 | $5.18 | $23,553 | 136,364 | Nov 26, 2025 |
| WINMILL & CO. INC | — | Purchase | 6,226 | $5.09 | $31,690 | 127,753 | Nov 24, 2025 |
| WINMILL & CO. INC | — | Purchase | 5,870 | $5.08 | $29,820 | 121,527 | Nov 19, 2025 |
| WINMILL & CO. INC | — | Purchase | 5,618 | $5.16 | $28,989 | 109,431 | Nov 17, 2025 |
| BURKE RUSSELL E III | — | Award / Grant | 248 | $5.03 | $1,247 | 35,348 | Nov 13, 2025 |
| Zachary William Chester | — | Award / Grant | 2,584 | $5.03 | $12,998 | 15,267 | Nov 13, 2025 |
| WINMILL & CO. INC | — | Purchase | 7,035 | $5.09 | $35,808 | 97,587 | Nov 13, 2025 |
| WINMILL & CO. INC | — | Purchase | 6,055 | $5.03 | $30,457 | 83,858 | Nov 11, 2025 |
| WINMILL & CO. INC | — | Purchase | 4,592 | $5.48 | $25,164 | 75,734 | Aug 29, 2025 |
| WINMILL & CO. INC | — | Purchase | 7,209 | $5.42 | $39,073 | 71,142 | Aug 27, 2025 |
| BURKE RUSSELL E III | — | Purchase | 105 | $5.25 | $551 | 35,100 | Aug 25, 2025 |
| WINMILL & CO. INC | — | Purchase | 7,788 | $5.26 | $40,965 | 58,456 | Aug 25, 2025 |
| WINMILL & CO. INC | — | Purchase | 2,160 | $5.15 | $11,124 | 42,845 | Aug 21, 2025 |
| Zachary William Chester | — | Award / Grant | 146 | $5.11 | $746 | 12,683 | Aug 19, 2025 |
| BURKE RUSSELL E III | — | Award / Grant | 146 | $5.11 | $746 | 34,995 | Aug 19, 2025 |
| BURKE RUSSELL E III | — | Award / Grant | 88 | $5.63 | $495 | 34,849 | Jun 17, 2025 |
| Zachary William Chester | — | Award / Grant | 88 | $5.63 | $495 | 12,537 | Jun 17, 2025 |
| Carroll Sally Coonrad | — | Purchase | 1,776 | $5.63 | $9,999 | 3,776 | May 21, 2025 |
| Zachary William Chester | — | Award / Grant | 87 | $5.70 | $496 | 12,449 | May 20, 2025 |
| BURKE RUSSELL E III | — | Award / Grant | 87 | $5.70 | $496 | 34,761 | May 20, 2025 |
| WINMILL MARK CAMPBELL | President and CEO | Purchase | 10,000 | $5.67 | $56,700 | 322,838 | May 19, 2025 |
| TUXIS CORP | — | Purchase | 9,680 | $5.21 | $50,433 | 294,158 | May 16, 2025 |
| Zachary William Chester | — | Award / Grant | 2,634 | $5.03 | $13,249 | 12,362 | Apr 1, 2025 |
| BURKE RUSSELL E III | — | Award / Grant | 2,634 | $5.03 | $13,249 | 34,674 | Apr 1, 2025 |
| Kamerman Russell | Assistant General Counsel | Award / Grant | 500 | $5.08 | $2,540 | 5,425 | Mar 25, 2025 |
| OMalley Thomas | Chief Financial Officer | Award / Grant | 5,527 | $4.32 | $23,877 | 80,640 | Mar 25, 2025 |
| Klimoski Donald II | General Counsel | Award / Grant | 5,527 | $5.08 | $28,077 | 80,527 | Mar 25, 2025 |
| WINMILL MARK CAMPBELL | President and CEO | Award / Grant | 12,672 | $5.08 | $64,374 | 300,166 | Mar 25, 2025 |
| BURKE RUSSELL E III | — | Purchase | 168 | $5.26 | $884 | 32,040 | Nov 21, 2024 |
| Zachary William Chester | — | Award / Grant | 2,427 | $5.15 | $12,499 | 9,728 | Nov 19, 2024 |
| BURKE RUSSELL E III | — | Award / Grant | 2,427 | $5.15 | $12,499 | 31,872 | Nov 19, 2024 |
| BURKE RUSSELL E III | — | Award / Grant | 246 | $5.08 | $1,250 | 29,445 | Aug 29, 2024 |
| Zachary William Chester | — | Award / Grant | 246 | $5.08 | $1,250 | 7,301 | Aug 29, 2024 |
| WINMILL & CO. INC | — | Purchase | 1,836 | $5.21 | $9,566 | 40,183 | Aug 29, 2024 |
| WINMILL & CO. INC | — | Purchase | 133 | $5.20 | $692 | 37,547 | Aug 27, 2024 |
| WINMILL & CO. INC | — | Purchase | 1,744 | $5.19 | $9,051 | 32,816 | Aug 22, 2024 |
| WINMILL & CO. INC | — | Purchase | 2,524 | $5.12 | $12,923 | 24,110 | Aug 20, 2024 |
| WINMILL & CO. INC | — | Purchase | 3,301 | $5.09 | $16,802 | 12,588 | Aug 19, 2024 |
| WINMILL & CO. INC | — | Purchase | 1,900 | $4.96 | $9,424 | 6,987 | Aug 15, 2024 |
| BURKE RUSSELL E III | — | Award / Grant | 200 | $4.98 | $996 | 29,199 | May 30, 2024 |
| Zachary William Chester | — | Award / Grant | 200 | $4.98 | $996 | 7,055 | May 30, 2024 |
| BURKE RUSSELL E III | — | Purchase | 203 | $4.98 | $1,011 | 28,999 | May 30, 2024 |
| WINMILL MARK CAMPBELL | President and CEO | Purchase | 24 | $4.91 | $118 | 267,019 | May 30, 2024 |
| Klimoski Donald II | General Counsel | Purchase | 10 | $4.86 | $49 | 74,471 | May 24, 2024 |
| Zachary William Chester | — | Award / Grant | 3,002 | $4.33 | $12,999 | 6,855 | Apr 2, 2024 |
| BURKE RUSSELL E III | — | Award / Grant | 3,002 | $4.33 | $12,999 | 28,796 | Apr 2, 2024 |
| WINMILL MARK CAMPBELL | President and CEO | Award / Grant | 3,467 | $4.32 | $14,977 | 226,541 | Mar 25, 2024 |