Global Self Storage
Owner and operator of U.S. self-storage facilities with a third-party management service.
$5.49
After-hours close0.00 (0.00%)
At close$5.49(−1.96%)
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Breakdown13F · Form 4
Institutions 27.48%3.14M sharesInsiders 10.04%1.15M sharesOther 62.48%7.14M shares
Shares outstanding 11.42M · Float 10.49M · 91.8% free float
Institutions13F, as of Mar 31, 2026
54 holders · 3.14M shares · 14 new positions · 30 increased · 12 reduced · 7 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| Winmill & Co. Inc | 586.5K | 5.13% | 0 | May 14, 2026 |
| Vanguard Capital Management LLC | 430.0K | 3.76% | +430.0Knew | May 15, 2026 |
| BlackRock, Inc. | 294.6K | 2.58% | +59.0K | May 13, 2026 |
| Marathon Capital Management | 259.6K | 2.27% | −1.5K | May 14, 2026 |
| Renaissance Technologies LLC | 216.2K | 1.89% | +1.4K | May 14, 2026 |
| Geode Capital Management, LLC | 144.3K | 1.26% | +118 | May 15, 2026 |
| Wells Fargo & Company/MN | 130.9K | 1.15% | +128.9K | Jul 8, 2026 |
| Private Capital Management, LLC | 103.5K | 0.91% | +91.5K | May 15, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| Mark Campbell Winmillincl. Winmill Family Trust, Tuxis Corp +3 more | 8.40% | 947.7K | 13D | Dec 5, 2025 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| Mark Campbell Winmill | director, officer: President and CEO | 368.6K | 3.23% | May 15, 2026 |
| Tuxis Corp | other: See "Explanation of Responses" | 303.8K | 2.66% | May 19, 2025 |
| Winmill & Co. Inc | other: See "Explanation of Responses" | 228.5K | 2.00% | Aug 26, 2026 |
| Donald II Klimoski | officer: General Counsel | 92.0K | 0.81% | Mar 25, 2026 |
| Thomas OMalley | officer: Chief Financial Officer | 86.2K | 0.75% | Mar 25, 2026 |
| Russell E. Iii Burke | director | 40.0K | 0.35% | Aug 14, 2026 |
| William Chester Zachary | director | 18.3K | 0.16% | Aug 13, 2026 |
| Russell Kamerman | officer: Assistant General Counsel | 5.9K | 0.05% | Mar 25, 2026 |
| Sally Coonrad Carroll | director | 3.8K | 0.03% | May 22, 2025 |
8 people have not refiled in the last 18 months (158.2K shares), so they are not in the figure above
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Aug 26, 2026 | Winmill & Co. Incother: See "Explanation of Responses" | Purchase | 7,761 | $5.64 | 228,512 |
| Aug 25, 2026 | Winmill & Co. Incother: See "Explanation of Responses" | Purchase | 7,547 | $5.66 | 220,751 |
| Aug 24, 2026 | Winmill & Co. Incother: See "Explanation of Responses" | Purchase | 8,022 | $5.62 | 213,204 |
| Aug 21, 2026 | Winmill & Co. Incother: See "Explanation of Responses" | Purchase | 7,117 | $5.45 | 205,182 |
| Aug 20, 2026 | Winmill & Co. Incother: See "Explanation of Responses" | Purchase | 6,901 | $5.42 | 198,065 |
| Aug 19, 2026 | Winmill & Co. Incother: See "Explanation of Responses" | Purchase | 6,877 | $5.40 | 191,164 |
| Aug 18, 2026 | Winmill & Co. Incother: See "Explanation of Responses" | Purchase | 5,736 | $5.32 | 184,287 |
| Aug 17, 2026 | Winmill & Co. Incother: See "Explanation of Responses" | Purchase | 7,117 | $5.33 | 178,551 |
| Aug 14, 2026 | Winmill & Co. Incother: See "Explanation of Responses" | Purchase | 6,029 | $5.23 | 171,434 |
| Aug 13, 2026 | Winmill & Co. Incother: See "Explanation of Responses" | Purchase | 5,629 | $5.20 | 165,405 |
CongressHouse and Senate disclosures
Not reported.