Security key
37955N106
Global Self Storage, Inc. - Common Stock, $0.01 par value per share (SELF)
CUSIP: 37955N106
Q4 2025 13F Holders as of 31 Dec 2025
- Security type / class
- Equity / Common Stock, $0.01 par value per share
- Total 13F shares
- 2,927,768
- Total 13F value
- $14,929,316
- Share change
- -143,746
- SEC-reported price per share
- $5.10
- Number of holders
- 47
- Value change
- -$733,726
- Number of buys
- 20
- Number of sells
- 24
- Shares outstanding
- 11,282,563
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q4 2025
Institutions
47
Top holders
10
SELF full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q1 2026
Previous quarter: Q3 2025
Global Self Storage, Inc. SEC filings
Global Self Storage, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 37955N106
Recent filing periods:
Ownership snapshot
Top reported holders of SELF - Global Self Storage, Inc. - Common Stock, $0.01 par value per share (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Mark Campbell Winmill
Disclosed value leader
Mark Campbell Winmill
Comparable rows
2/15
Latest evidence
03 Dec 2025
13D/G
13F
3/4/5
Lead comparable stake: 8.4%
13 rows are not safely comparable across share classes.
13D/G row: Mark Campbell Winmill
Showing 1-6 of 15 holder rows.
Quick read
Mark Campbell Winmill leads the comparable SEC ownership view at 8.4%.
2 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Mark Campbell Winmill's linked filing trail.
Comparable ownership
Top 2
Mark Campbell Winmill
8.4%
BARD ASSOCIATES INC
2.9%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Mark Campbell Winmill |
13D/G
|
8.4%
Reported 13D/G
· 03 Dec 2025
|
$4,605,994
947,735 shares
|
+$601,950 | 03 Dec 2025 |
| BARD ASSOCIATES INC |
13F
13D/G
Company
|
2.9%
Reported 13D/G
· 13 Aug 2025
|
$1,680,247
334,045 shares
|
— | 30 Sep 2025 |
| WINMILL & CO. INC |
13F
Company
|
—
denominator unverified
|
$2,588,403
514,593 shares
|
— | 30 Sep 2025 |
| VANGUARD GROUP INC |
13F
Company
|
—
denominator unverified
|
$2,584,088
513,735 shares
|
— | 30 Sep 2025 |
| TUXIS CORP |
3/4/5
Other*
|
—
denominator unverified
|
$1,587,074
303,758 shares
|
— | 15 May 2025 |
| MARATHON CAPITAL MANAGEMENT |
13F
Company
|
—
denominator unverified
|
$1,489,833
296,190 shares
|
— | 30 Sep 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q4 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
47
Shares
2,927,768
Rows available
47
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q4 2025 vs Q3 2025 Across Filers
Q3 2025 holders
49
Q4 2025 holders
47
Holder diff
-2
| Investor | Q3 2025 Shares | Q4 2025 Shares | Share Diff | Share Chg % | Q3 2025 value | Q4 2025 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend