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$SELF
$4.85 -$0.03 (0.61%) Close

Ownership

13F as of Q2 2026 · 11.4M shares outstanding

Who owns SELF?

By type of holder
Institutions 29.3% Insiders 10.2% Everyone else 60.5%
Concentration Top 10 holders own 38.3%
Mark Campbell Winmill 8.3% · Thomas Bassett Winmill 5.1%
Institutional ownership
29.3%
+1.8 pts vs last qtr
Institutional holders
51
-4 vs last qtr
Net shares bought
+210.6K
by institutions in Q2 2026
New / sold out
2 / 6
positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026
  • Private Capital Management, LLC +119.8K
  • BlackRock, Inc. +102.9K

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Biggest sellers in Q2 2026
  • Susquehanna International Group, LLP SOLD OUT −23.8K
  • Renaissance Technologies LLC −18.1K

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Who is planning to sell?

No insider has filed a notice of proposed sale (Form 144) for Global Self Storage Inc in the last 12 months.

Is your stake being diluted?

Diluted share count, FY2017–FY2025
+47.3%
+4.96% a year
Each share's claim on the business
−32.1%
shrank without buying or selling a share
Spent on buybacks vs paid in stock
— vs $1.56M
over 9 fiscal years
Diluted shares, split-adjusted
7.4M9.4M11.3M2017: 7.6M shares'172018: 7.6M shares'182019: 7.7M shares'192020: 9.3M shares'202021: 10.0M shares'212022: 10.9M shares'222023: 11.1M shares'232024: 11.1M shares'242025: 11.2M shares'25
Buybacks Stock-based comp
$0$175.2K$350.3K2017 buybacks: $02017 stock comp: $0'172018 buybacks: $02018 stock comp: $80.8K'182019 buybacks: $02019 stock comp: $103.0K'192020 buybacks: $02020 stock comp: $126.0K'202021 buybacks: $02021 stock comp: $194.4K'212022 buybacks: $02022 stock comp: $173.9K'222023 buybacks: $02023 stock comp: $199.8K'232024 buybacks: $02024 stock comp: $332.4K'242025 buybacks: $02025 stock comp: $350.3K'25

How patient are the owners?

Institutional shares by how long they've been held
5+ years66% 3–5 years10% 1–3 years10% Under 1 year13%
Quarterly turnover
6.4%
of institutional shares changed hands
Top 10 managers, median time held
5 years

Super Investors

Investment managers reporting SELF on Form 13F
W
Winmill & Co. Inc
13D · 5.2%
Shares
586.5K
% of company
5.14%
Change vs last qtr
Unchanged
Held since
≤2021
VC
Vanguard Capital Management LLC
Shares
434.5K
% of company
3.80%
Change vs last qtr
+4.5K (+1.0%)
Held since
≤2021

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Institutional Funds

Mutual funds and ETFs reporting SELF on Form N-PORT; together they hold 6.4% of the company
VT
Vanguard Total Stock Market Index Fund
Vanguard Index Funds
Position value
$1.64M
% of company
2.74%
% of the fund
0.00%
As of
June 30, 2026
VE
Vanguard Extended Market Index Fund
Vanguard Index Funds
Position value
$612K
% of company
1.02%
% of the fund
0.00%
As of
June 30, 2026

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Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G
MC
Mark Campbell Winmill
5%+ holder13D · 8.4%
Shares
947.7K
% of company
8.30%
Change vs last qtr
—
Held since
—
TB
Thomas Bassett Winmill
5%+ holder13D · 5.2%
Shares
587.6K
% of company
5.14%
Change vs last qtr
—
Held since
—

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