SELF
Global Self Storage, Inc. · Real Estate · Market cap $56.4M
Insiders bought $466K net in the last 90 days ·0 sellers, 3 buyers· latest Form 4 filed Sep 11, 2026
Insider Buying
$941K
reported purchases (SEC code P)
Insider Selling
$0
reported sales (SEC code S)
Unique Insiders
4
in the rolling window
Latest filing
Sep 11, 2026
WINMILL MARK CAMPBELL
Global Self Storage, Inc. (SELF) has 30 SEC Form 4 filings (52 transaction rows) in the rolling window, disclosed by 4 distinct insiders. Most recent filing: Sep 11, 2026.
Inside the rolling window, 4 insiders at Global Self Storage, Inc. reported 34 open-market purchases totaling $941K and no open-market sales. The most active filer is Insider WINMILL & CO. INC with 26 filings. Insiders have net bought $487K over the trailing 6 months. The most recent open-market filing is a purchase of 3,658 shares by President and CEO WINMILL MARK CAMPBELL, dated Sep 9, 2026, worth $19K.
- Industry:REIT - Specialty
- CEO:Mark Campbell Winmill
- Employees:36
- HQ:Millbrook, NY, US
- IPO:1997-02-07
| Source | |||||||
|---|---|---|---|---|---|---|---|
WINMILL MARK CAMPBELLFirst in 4 months | President and CEO | Purchase | 3,658 | $19K | Sep 11 | -3.3% | SEC ↗ |
WINMILL MARK CAMPBELLFirst in 4 months | President and CEO | Purchase | 342 | $2K | Sep 11 | -3.3% | SEC ↗ |
| See "Explanation of Responses" | Purchase | 7,547 | $43K | Aug 26 | -11.9% | SEC ↗ | |
| See "Explanation of Responses" | Purchase | 7,761 | $44K | Aug 26 | -11.9% | SEC ↗ | |
| See "Explanation of Responses" | Purchase | 7,117 | $39K | Aug 24 | -12.9% | SEC ↗ | |
| See "Explanation of Responses" | Purchase | 8,022 | $45K | Aug 24 | -12.9% | SEC ↗ | |
| See "Explanation of Responses" | Purchase | 6,877 | $37K | Aug 20 | -11.0% | SEC ↗ | |
| See "Explanation of Responses" | Purchase | 6,901 | $37K | Aug 20 | -11.0% | SEC ↗ | |
| See "Explanation of Responses" | Purchase | 7,117 | $38K | Aug 18 | — | SEC ↗ | |
| See "Explanation of Responses" | Purchase | 5,736 | $31K | Aug 18 | — | SEC ↗ | |
| See "Explanation of Responses" | Purchase | 5,629 | $29K | Aug 14 | — | SEC ↗ | |
| See "Explanation of Responses" | Purchase | 6,029 | $32K | Aug 14 | — | SEC ↗ | |
BURKE RUSSELL E IIIFirst filing | Director | Purchase | 1,625 | $8K | Aug 14 | — | SEC ↗ |
| See "Explanation of Responses" | Purchase | 5,887 | $30K | Aug 12 | — | SEC ↗ | |
| See "Explanation of Responses" | Purchase | 6,248 | $32K | Aug 12 | — | SEC ↗ | |
WINMILL MARK CAMPBELLFirst in 5 months | President and CEO | Purchase | 4,000 | $21K | May 15 | — | SEC ↗ |
WINMILL MARK CAMPBELLFirst filing | President and CEO | Purchase | 6,000 | $31K | Dec 5 | — | SEC ↗ |
WINMILL MARK CAMPBELLFirst filing | President and CEO | Purchase | 6,000 | $31K | Dec 5 | — | SEC ↗ |
WINMILL MARK CAMPBELLFirst filing | President and CEO | Purchase | 4,400 | $22K | Dec 5 | — | SEC ↗ |
Klimoski Donald IIFirst filing | General Counsel | Purchase | 446 | $2K | Dec 2 | — | SEC ↗ |
| See "Explanation of Responses" | Purchase | 3,342 | $17K | Dec 1 | — | SEC ↗ | |
| See "Explanation of Responses" | Purchase | 3,062 | $16K | Dec 1 | — | SEC ↗ | |
| See "Explanation of Responses" | Purchase | 4,547 | $24K | Nov 26 | — | SEC ↗ | |
| See "Explanation of Responses" | Purchase | 4,873 | $25K | Nov 26 | — | SEC ↗ | |
| See "Explanation of Responses" | Purchase | 6,226 | $32K | Nov 24 | — | SEC ↗ |
Earnings: last 7 quarters
Frequently asked questions
How many SEC Form 4 insider filings does SELF have?
Global Self Storage, Inc. (SELF) has 30 SEC Form 4 filings (52 transaction rows) in the rolling 365-day window, disclosed by 4 distinct insiders. Most recent filing: Sep 11, 2026.
When was the most recent SEC Form 4 filing for SELF?
The most recent Form 4 filing for SELF on Tracefour is dated Sep 11, 2026.
Who is the most active insider at SELF?
The most active SEC Form 4 filer at SELF in the rolling window is Insider WINMILL & CO. INC, with 26 filings.
What is the net insider flow at SELF over the last 6 months?
Over the trailing 180 days, insiders at SELF have net bought $487K based on SEC Form 4 disclosures.
What is the total insider buy and sell value at SELF in the current window?
Inside the rolling window, insiders at SELF bought $941K and sold $0 based on SEC Form 4 filings.
Can I get alerts for SELF insider trading?
Yes. Tracefour sends a free email when a new SEC Form 4 purchase or sale is filed at Global Self Storage, Inc. (SELF). Alerts are set per company from the page itself, there is no paid tier, and each email links to the original filing on SEC EDGAR.
Related companies
Global Self Storage, Inc. is in the Real Estate sector.