Global Self Storage, Inc. (SELF) shareholders
SELFNasdaqReal Estate Investment TrustsFiscal year ends December 31
Financials through Q3 FY2026, quarter ended Sep 30, 2026Last filing: 10-Q on Nov 6, 2026Score 9/301% above fair value
$4.88+0.14 (+2.95%)
Close on Nov 12, 2026Market cap $55.74MP/E 27.1Yield 5.94%
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Held by institutions
29.3%
3M of 11M shares
Institutional holders
51
2 new, 5 sold out
Net institutional buying
0M
In Q2 2026
Insider trades, 12 months
35 buys · 0 sales
Net bought $899.96K
Shares held by institutions
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| Mark Campbell Winmill Joint filing with Thomas Bassett Winmill (5.20%), Winmill Family Trust (5.20%) and 1 more | 947,735 | 8.40% | 13D (active) amendment | Dec 3, 2025 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of SELF | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| Winmill & Co. Inc | 586,500 | 5.14% | $3.07M | – | 0.68% |
| Vanguard Capital Management LLC | 434,491 | 3.80% | $2.28M | +4,488 | 0.00% |
| BlackRock, Inc. | 397,495 | 3.48% | $2.08M | +102,855 | 0.00% |
| Marathon Capital Management | 260,784 | 2.28% | $1.37M | +1,157 | 0.28% |
| Private Capital Management, LLC | 223,337 | 1.96% | $1.17M | +119,788 | 0.10% |
| Renaissance Technologies LLC | 198,075 | 1.73% | $1.04M | −18,100 | 0.00% |
| Geode Capital Management, LLC | 143,249 | 1.25% | $750.80K | −1,013 | 0.00% |
| Wells Fargo & Company/Mn | 130,918 | 1.15% | $686.01K | −1 | 0.00% |
| Morgan Stanley | 77,803 | 0.68% | $407.69K | +4,689 | 0.00% |
| Kestra Advisory Services, LLC | 67,167 | 0.59% | $351.96K | +4,047 | 0.00% |
| Vanguard Fiduciary Trust Co | 60,689 | 0.53% | $318.01K | +458 | 0.00% |
| Dimensional Fund Advisors LP | 57,896 | 0.51% | $303.37K | −3,233 | 0.00% |
| Towneley Capital Management, Inc / DE | 49,047 | 0.43% | $257.01K | +672 | 0.05% |
| Raymond James Financial Inc | 46,029 | 0.40% | $241.19K | +5,091 | 0.00% |
| Baker Ellis Asset Management LLC | 37,000 | 0.32% | $193.88K | +2,000 | 0.02% |
| Goldman Sachs Group Inc | 36,271 | 0.32% | $190.06K | +9,730 | 0.00% |
| PFG Investments, LLC | 35,511 | 0.31% | $186.08K | +109 | 0.01% |
| WealthTrust Axiom LLC | 32,000 | 0.28% | $167.68K | +1,000 | 0.04% |
| State Street Corp | 31,580 | 0.28% | $165.48K | – | 0.00% |
| Crossingbridge Advisors, LLC | 30,000 | 0.26% | $157.20K | −5,271 | 0.03% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | % of shares | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 51 | 3M | 29.3% | 2 / 24 | 13 / 5 | 0M | 0M |
| Q1 2026 | 55 | 3M | 27.5% | 14 / 16 | 12 / 6 | 1M | 0M |
| Q4 2025 | 48 | 3M | 25.6% | 7 / 14 | 16 / 9 | 0M | 0M |
| Q3 2025 | 51 | 3M | 26.6% | 10 / 17 | 14 / 3 | 0M | 1M |
| Q2 2025 | 45 | 3M | 28.8% | 7 / 15 | 12 / 7 | 0M | 0M |
| Q1 2025 | 46 | 3M | 28.8% | 7 / 10 | 14 / 3 | 0M | 0M |
| Q4 2024 | 44 | 3M | 28.9% | 7 / 12 | 12 / 3 | 0M | 0M |
| Q3 2024 | 41 | 3M | 28.6% | 6 / 10 | 9 / 5 | 0M | 0M |
| Q2 2024 | 42 | 3M | 28.0% | 4 / 12 | 16 / 6 | 0M | 0M |
| Q1 2024 | 44 | 3M | 29.3% | 8 / 11 | 12 / 9 | 0M | 0M |
| Q4 2023 | 45 | 3M | 29.0% | 7 / 12 | 10 / 4 | 0M | 0M |
| Q3 2023 | 43 | 3M | 29.2% | 6 / 9 | 12 / 7 | 0M | 0M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
15 funds held SELF in Q2 2026, 64% of their shares through ETFs. Each fund counts once per quarter, from its quarter-end report.
| Fund | Shares | % of SELF | Value | % of fund | As of |
|---|---|---|---|---|---|
| Vanguard Total Stock Market Index Fund | 312,824 | 2.74% | $1.64M | 0.00% | Jun 30, 2026 |
| Vanguard Extended Market Index Fund | 116,721 | 1.02% | $611.62K | 0.00% | Jun 30, 2026 |
| Fidelity Extended Market Index Fund | 68,233 | 0.60% | $352.08K | 0.00% | May 31, 2026 |
| Dfa Real Estate Securities Portfolio | 43,975 | 0.39% | $224.27K | 0.00% | Jul 31, 2026 |
| Commonwealth Real Estate Securities Fund | 39,000 | 0.34% | $198.90K | 1.27% | Jul 31, 2026 |
| iShares Micro-Cap ETF | 37,448 | 0.33% | $196.23K | 0.01% | Jun 30, 2026 |
| AlphaCentric Real Income Fund | 30,000 | 0.26% | $157.20K | 0.37% | Jun 30, 2026 |
| Fidelity Total Market Index Fund | 27,580 | 0.24% | $142.31K | 0.00% | May 31, 2026 |
| T. Rowe Price Extended Equity Market Index Fund | 19,971 | 0.17% | $104.65K | 0.01% | Jun 30, 2026 |
| Fidelity Series Total Market Index Fund | 17,996 | 0.16% | $92.86K | 0.00% | May 31, 2026 |
| Fidelity Nasdaq Composite Index Fund | 5,948 | 0.05% | $30.69K | 0.00% | May 31, 2026 |
| Vanguard Balanced Index Fund | 4,946 | 0.04% | $25.92K | 0.00% | Jun 30, 2026 |
| Dimensional US Real Estate ETF | 4,668 | 0.04% | $23.81K | 0.00% | Jul 31, 2026 |
| 1290 VT Micro Cap Portfolio | 2,068 | 0.02% | $10.84K | 0.00% | Jun 30, 2026 |
| SA Real Estate Securities Fund | 995 | 0.01% | $5.21K | 0.00% | Jun 30, 2026 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | % of shares | Latest filing |
|---|---|---|---|---|
| Mark Campbell Winmill | President and CEO, Director | 372,290 | 3.26% | Sep 11, 2026 |
| Russell Kamerman | Assistant General Counsel | 5,925 | 0.05% | Mar 25, 2026 |
| Thomas OMalley | Chief Financial Officer | 86,167 | 0.75% | Mar 25, 2026 |
| Donald Klimoski II | General Counsel | 97,554 | 0.85% | Mar 25, 2026 |
| Russell E. Burke Iii | Director | 40,002 | 0.35% | Aug 14, 2026 |
| William Chester Zachary | Director | 18,296 | 0.16% | Aug 13, 2026 |
| Sally Coonrad Carroll | Director | 3,776 | 0.03% | May 22, 2025 |
| & Co. Inc Winmill | – | 228,512 | 2.00% | Aug 26, 2026 |
| Corp Tuxis | – | 303,758 | 2.66% | May 19, 2025 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| Mark Campbell Winmill President and CEO, Director | Sep 10, 2026 | Buy | +50 | $5.16 | $258 | 372,290 |
| Mark Campbell Winmill President and CEO, Director | Sep 10, 2026 | Buy | +292 | $5.16 | $1.51K | 372,582 |
| Mark Campbell Winmill President and CEO, Director | Sep 9, 2026 | Buy | +2,058 | $5.16 | $10.62K | 372,240 |
| Mark Campbell Winmill President and CEO, Director | Sep 9, 2026 | Buy | +1,600 | $5.16 | $8.26K | 370,182 |
| & Co. Inc Winmill – | Aug 26, 2026 | Buy | +7,761 | $5.64 | $43.77K | 228,512 |
| & Co. Inc Winmill – | Aug 25, 2026 | Buy | +7,547 | $5.66 | $42.72K | 220,751 |
| & Co. Inc Winmill – | Aug 24, 2026 | Buy | +8,022 | $5.62 | $45.08K | 213,204 |
| & Co. Inc Winmill – | Aug 21, 2026 | Buy | +7,117 | $5.45 | $38.79K | 205,182 |
| & Co. Inc Winmill – | Aug 20, 2026 | Buy | +6,901 | $5.42 | $37.40K | 198,065 |
| & Co. Inc Winmill – | Aug 19, 2026 | Buy | +6,877 | $5.40 | $37.14K | 191,164 |
| & Co. Inc Winmill – | Aug 18, 2026 | Buy | +5,736 | $5.32 | $30.52K | 184,287 |
| & Co. Inc Winmill – | Aug 17, 2026 | Buy | +7,117 | $5.33 | $37.93K | 178,551 |
| & Co. Inc Winmill – | Aug 14, 2026 | Buy | +6,029 | $5.23 | $31.53K | 171,434 |
| Russell E. Burke Iii Director | Aug 13, 2026 | Buy | +1,625 | $5.21 | $8.47K | 40,002 |
| & Co. Inc Winmill – | Aug 13, 2026 | Buy | +5,629 | $5.20 | $29.27K | 165,405 |
| & Co. Inc Winmill – | Aug 12, 2026 | Buy | +6,248 | $5.15 | $32.18K | 159,776 |
| William Chester Zachary Director | Aug 11, 2026 | Award | +196 | $5.10 | $1,000 | 18,296 |
| Russell E. Burke Iii Director | Aug 11, 2026 | Award | +196 | $5.10 | $1,000 | 38,377 |
| & Co. Inc Winmill – | Aug 11, 2026 | Buy | +5,887 | $5.17 | $30.44K | 153,528 |
| Mark Campbell Winmill President and CEO, Director | May 14, 2026 | Buy | +4,000 | $5.33 | $21.32K | 368,582 |
| Russell E. Burke Iii Director | May 12, 2026 | Award | +94 | $5.31 | $499 | 38,181 |
| William Chester Zachary Director | May 12, 2026 | Award | +94 | $5.31 | $499 | 18,100 |
| Russell E. Burke Iii Director | Mar 31, 2026 | Award | +2,739 | $5.11 | $14.00K | 38,087 |
| William Chester Zachary Director | Mar 31, 2026 | Award | +2,739 | $5.11 | $14.00K | 18,006 |
| Russell Kamerman Assistant General Counsel | Mar 24, 2026 | Award | +500 | $5.10 | $2.55K | 5,925 |
| Thomas OMalley Chief Financial Officer | Mar 24, 2026 | Award | +5,527 | $5.08 | $28.08K | 86,167 |
| Thomas OMalley Chief Financial Officer | Mar 24, 2026 | Award | +5,527 | $5.10 | $28.19K | 91,694 |
| Donald Klimoski II General Counsel | Mar 24, 2026 | Award | +5,527 | $5.10 | $28.19K | 97,554 |
| Donald Klimoski II General Counsel | Mar 24, 2026 | Award | +5,527 | $5.08 | $28.08K | 92,027 |
| Mark Campbell Winmill President and CEO, Director | Mar 24, 2026 | Award | +12,672 | $5.08 | $64.37K | 351,910 |
| Mark Campbell Winmill President and CEO, Director | Mar 24, 2026 | Award | +12,672 | $5.10 | $64.63K | 364,582 |
| Mark Campbell Winmill President and CEO, Director | Dec 5, 2025 | Buy | +800 | $5.05 | $4.04K | 335,638 |
| Mark Campbell Winmill President and CEO, Director | Dec 5, 2025 | Buy | +3,600 | $5.09 | $18.32K | 339,238 |
| Mark Campbell Winmill President and CEO, Director | Dec 4, 2025 | Buy | +6,000 | $5.14 | $30.84K | 334,838 |
| Mark Campbell Winmill President and CEO, Director | Dec 3, 2025 | Buy | +6,000 | $5.13 | $30.78K | 328,838 |
| Donald Klimoski II General Counsel | Dec 2, 2025 | Buy | +446 | $5.05 | $2.25K | 86,500 |
| & Co. Inc Winmill – | Dec 1, 2025 | Buy | +3,062 | $5.18 | $15.86K | 147,641 |
| & Co. Inc Winmill – | Nov 28, 2025 | Buy | +3,342 | $5.16 | $17.24K | 144,579 |
| & Co. Inc Winmill – | Nov 26, 2025 | Buy | +4,873 | $5.17 | $25.19K | 141,237 |
| & Co. Inc Winmill – | Nov 25, 2025 | Buy | +4,547 | $5.18 | $23.55K | 136,364 |
| & Co. Inc Winmill – | Nov 24, 2025 | Buy | +4,064 | $5.14 | $20.89K | 131,817 |
| & Co. Inc Winmill – | Nov 21, 2025 | Buy | +6,226 | $5.09 | $31.69K | 127,753 |
| & Co. Inc Winmill – | Nov 20, 2025 | Buy | +5,870 | $5.08 | $29.82K | 121,527 |
| & Co. Inc Winmill – | Nov 19, 2025 | Buy | +6,226 | $5.13 | $31.94K | 115,657 |
| & Co. Inc Winmill – | Nov 18, 2025 | Buy | +5,618 | $5.16 | $28.99K | 109,431 |
| & Co. Inc Winmill – | Nov 17, 2025 | Buy | +6,226 | $5.12 | $31.88K | 103,813 |
| & Co. Inc Winmill – | Nov 14, 2025 | Buy | +7,035 | $5.09 | $35.81K | 97,587 |
| Russell E. Burke Iii Director | Nov 13, 2025 | Award | +248 | $5.03 | $1.25K | 35,348 |
| William Chester Zachary Director | Nov 13, 2025 | Award | +2,584 | $5.03 | $13.00K | 15,267 |
| & Co. Inc Winmill – | Nov 13, 2025 | Buy | +6,694 | $5.03 | $33.67K | 90,552 |
| & Co. Inc Winmill – | Nov 12, 2025 | Buy | +6,055 | $5.03 | $30.46K | 83,858 |
| & Co. Inc Winmill – | Nov 11, 2025 | Buy | +2,069 | $4.97 | $10.28K | 77,803 |
| & Co. Inc Winmill – | Aug 29, 2025 | Buy | +4,592 | $5.48 | $25.16K | 75,734 |
| & Co. Inc Winmill – | Aug 28, 2025 | Buy | +7,209 | $5.42 | $39.07K | 71,142 |
| & Co. Inc Winmill – | Aug 27, 2025 | Buy | +5,477 | $5.36 | $29.36K | 63,933 |
| & Co. Inc Winmill – | Aug 26, 2025 | Buy | +7,788 | $5.26 | $40.96K | 58,456 |
| & Co. Inc Winmill – | Aug 25, 2025 | Buy | +7,823 | $5.22 | $40.84K | 50,668 |
| Russell E. Burke Iii Director | Aug 25, 2025 | Buy | +105 | $5.25 | $551 | 35,100 |
| & Co. Inc Winmill – | Aug 22, 2025 | Buy | +2,160 | $5.15 | $11.12K | 42,845 |
| & Co. Inc Winmill – | Aug 21, 2025 | Buy | +502 | $5.12 | $2.57K | 40,685 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.
Short interest
Shares sold short and not yet bought back, as of Oct 30, 2026 (FINRA, reported twice a month)
Short % of float
0.53%
0M shares short
Days to cover
2.8
At 0M shares a day
Change since last report
-23.9%
From 0M shares
Short volume, 20 days
37.4%
Of volume reported to FINRA
Shares sold short, last 12 months
Short sale volume counts trades marked short on any given day, including market-maker hedging, so it runs far higher than the share of Global Self Storage's stock actually held short. No settlement fails above the SEC's reporting threshold in the last 90 days.
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