SELF
Global Self Storage, Inc.
Real Estate Investment TrustsNasdaq
Total Trades
38
Buys
37
Sells
1
Largest Trade
$100K–$500K
Insiders
7
Institutional Funds
37
Inst. Value
$1M+
Activist Filings
3
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| WINMILL MARK CAMPBELL | President and CEO | BUY | $50K–$100K | 16K | $5.12 | Dec 5, 2025 |
| Klimoski Donald II | General Counsel | BUY | $1K–$15K | 446 | $5.05 | Dec 2, 2025 |
| WINMILL & CO. INC | Insider | BUY | $15K–$50K | 6K | $5.17 | Dec 1, 2025 |
| WINMILL & CO. INC | Insider | BUY | $15K–$50K | 9K | $5.17 | Nov 26, 2025 |
| WINMILL & CO. INC | Insider | BUY | $50K–$100K | 10K | $5.11 | Nov 24, 2025 |
| WINMILL & CO. INC | Insider | BUY | $50K–$100K | 12K | $5.11 | Nov 20, 2025 |
| WINMILL & CO. INC | Insider | BUY | $50K–$100K | 12K | $5.14 | Nov 18, 2025 |
| WINMILL & CO. INC | Insider | BUY | $50K–$100K | 14K | $5.06 | Nov 14, 2025 |
| WINMILL & CO. INC | Insider | BUY | $15K–$50K | 8K | $5.01 | Nov 12, 2025 |
| WINMILL & CO. INC | Insider | BUY | $15K–$50K | 5K | $5.48 | Aug 29, 2025 |
| WINMILL & CO. INC | Insider | BUY | $50K–$100K | 13K | $5.39 | Aug 28, 2025 |
| BURKE RUSSELL E III | Director | BUY | <$1K | 105 | $5.25 | Aug 26, 2025 |
| WINMILL & CO. INC | Insider | BUY | $50K–$100K | 16K | $5.24 | Aug 26, 2025 |
| WINMILL & CO. INC | Insider | BUY | $1K–$15K | 3K | $5.14 | Aug 22, 2025 |
| Carroll Sally Coonrad | Director | BUY | $1K–$15K | 2K | $5.63 | May 22, 2025 |
| WINMILL MARK CAMPBELL | President and CEO | BUY | $50K–$100K | 10K | $5.67 | May 20, 2025 |
| TUXIS CORP | Insider | BUY | $100K–$500K | 19K | $5.22 | May 19, 2025 |
| BURKE RUSSELL E III | Director | BUY | <$1K | 168 | $5.25 | Nov 22, 2024 |
| WINMILL & CO. INC | Insider | BUY | $1K–$15K | 3K | $5.22 | Aug 30, 2024 |
| WINMILL & CO. INC | Insider | BUY | $15K–$50K | 5K | $5.18 | Aug 27, 2024 |
| WINMILL & CO. INC | Insider | BUY | $15K–$50K | 9K | $5.20 | Aug 23, 2024 |
| WINMILL & CO. INC | Insider | BUY | $15K–$50K | 7K | $5.10 | Aug 21, 2024 |
| WINMILL & CO. INC | Insider | BUY | $15K–$50K | 7K | $5.05 | Aug 19, 2024 |
| BURKE RUSSELL E III | Director | BUY | $1K–$15K | 203 | $4.98 | May 31, 2024 |
| WINMILL MARK CAMPBELL | President and CEO | BUY | $100K–$500K | 23K | $4.96 | May 30, 2024 |
| Klimoski Donald II | General Counsel | BUY | $1K–$15K | 539 | $4.90 | May 24, 2024 |
| TUXIS CORP | Insider | SELL | $50K–$100K | 15K | $4.60 | Dec 1, 2023 |
| WINMILL MARK CAMPBELL | President and CEO | BUY | $15K–$50K | 7K | $4.83 | Nov 17, 2023 |
| Klimoski Donald II | General Counsel | BUY | $1K–$15K | 1K | $4.80 | Nov 17, 2023 |
| Carroll Sally Coonrad | Director | BUY | $1K–$15K | 2K | $5.07 | Aug 18, 2023 |
| WINMILL MARK CAMPBELL | President and CEO | BUY | $1K–$15K | 1K | $5.07 | Aug 18, 2023 |
| WINMILL MARK CAMPBELL | President and CEO | BUY | $15K–$50K | 8K | $5.12 | May 16, 2023 |
| Klimoski Donald II | General Counsel | BUY | $1K–$15K | 560 | $5.08 | May 15, 2023 |
| LANGA GEORGE B | Director | BUY | $1K–$15K | 2K | $5.11 | Nov 29, 2022 |
| WINMILL MARK CAMPBELL | President and CEO | BUY | $15K–$50K | 3K | $5.18 | Nov 21, 2022 |
| Klimoski Donald II | General Counsel | BUY | <$1K | 148 | $5.25 | Nov 17, 2022 |
| WINMILL MARK CAMPBELL | President and CEO | BUY | $15K–$50K | 5K | $6.07 | Aug 24, 2022 |
| WINMILL MARK CAMPBELL | President and CEO | BUY | $1K–$15K | 2K | $5.74 | May 23, 2022 |
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Institutional Ownership
13F filings as of Dec 31, 2025 · 37 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| MARATHON CAPITAL MANAGEMENT | 261K | $1M+ | SH |
| RENAISSANCE TECHNOLOGIES LLC | 215K | $1M+ | SH |
| BlackRock, Inc. | 191K | $500K+ | SH |
| WINMILL & CO. INC | 135K | $500K+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 121K | $500K+ | SH |
| Kestra Advisory Services, LLC | 75K | $100K–$500K | SH |
| VANGUARD GROUP INC | 60K | $100K–$500K | SH |
| DIMENSIONAL FUND ADVISORS LP | 52K | $100K–$500K | SH |
| EASTERLY INVESTMENT PARTNERS LLC | 49K | $100K–$500K | SH |
| Towneley Capital Management, Inc / DE | 48K | $100K–$500K | SH |
| Cetera Investment Advisers | 44K | $100K–$500K | SH |
| Baker Ellis Asset Management LLC | 39K | $100K–$500K | SH |
| LPL Financial LLC | 38K | $100K–$500K | SH |
| AlphaCentric Advisors LLC | 35K | $100K–$500K | SH |
| PFG Investments, LLC | 35K | $100K–$500K | SH |
| Crossingbridge Advisors, LLC | 35K | $100K–$500K | SH |
| STATE STREET CORP | 32K | $100K–$500K | SH |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC | 25K | $100K–$500K | SH |
| NewEdge Advisors, LLC | 24K | $100K–$500K | SH |
| JAMES INVESTMENT RESEARCH, INC. | 24K | $100K–$500K | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
SC 13D/A · Dec 5, 2025
8.4%
948K shares
SC 13G/A · Nov 12, 2025
2.9%
330K shares
SC 13D/A · May 21, 2025
7.3%
824K shares