SELF insider buying
4 cluster buysGlobal Self Storage, Inc.
When two or more insiders at Global Self Storage, Inc. buy SELF on the open market around the same time, that clustered conviction is one of the highest-signal patterns in SEC filing data. Below is every cluster we've detected in SELF plus the full record of qualifying open-market buys, each parsed directly from Form 4 filings and linked back to the source on SEC EDGAR.
Detected clusters
- Aug 11 – Sep 10, 2026Detected Sep 11, 2026High conviction2 insidersTotal bought$396.6KMarket capUnknown
- Aug 21 – Dec 5, 2025Detected Dec 5, 2025High conviction4 insidersTotal bought$643.2KMarket cap$59.5M
- May 15 – May 21, 2025Detected May 21, 2025High conviction3 insidersTotal bought$167.2KMarket cap$59.5M
1 more cluster in SELF
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All notable open-market buys in SELF
Every open-market Form 4 purchase, newest first. Click an insider to see their full buying record across companies.
| Date | Insider | Shares | Price | Value | Filing |
|---|---|---|---|---|---|
| Sep 10, 2026 | WINMILL MARK CAMPBELLcluster Director, President and CEO | 292 | $5.16 | $1.5K | SEC ↗ |
| Sep 10, 2026 | WINMILL MARK CAMPBELLcluster Director, President and CEO | 50 | $5.16 | $258.0 | SEC ↗ |
| Sep 9, 2026 | WINMILL MARK CAMPBELLcluster Director, President and CEO | 2,058 | $5.16 | $10.6K | SEC ↗ |
| Sep 9, 2026 | WINMILL MARK CAMPBELLcluster Director, President and CEO | 1,600 | $5.16 | $8.3K | SEC ↗ |
| Aug 26, 2026 | WINMILL & CO. INCcluster See "Explanation of Responses" | 7,761 | $5.64 | $43.8K | SEC ↗ |
| Aug 25, 2026 | WINMILL & CO. INCcluster See "Explanation of Responses" | 7,547 | $5.66 | $42.7K | SEC ↗ |
| Aug 24, 2026 | WINMILL & CO. INCcluster See "Explanation of Responses" | 8,022 | $5.62 | $45.0K | SEC ↗ |
| Aug 21, 2026 | WINMILL & CO. INCcluster See "Explanation of Responses" | 7,117 | $5.45 | $38.8K | SEC ↗ |
| Aug 20, 2026 | WINMILL & CO. INCcluster See "Explanation of Responses" | 6,901 | $5.42 | $37.4K | SEC ↗ |
| Aug 19, 2026 | WINMILL & CO. INCcluster See "Explanation of Responses" | 6,877 | $5.40 | $37.2K | SEC ↗ |
| Aug 18, 2026 | WINMILL & CO. INCcluster See "Explanation of Responses" | 5,736 | $5.32 | $30.5K | SEC ↗ |
| Aug 17, 2026 | WINMILL & CO. INCcluster See "Explanation of Responses" | 7,117 | $5.33 | $37.9K | SEC ↗ |
| Aug 12, 2026 | WINMILL & CO. INCcluster See "Explanation of Responses" | 6,248 | $5.15 | $32.2K | SEC ↗ |
| Aug 11, 2026 | WINMILL & CO. INCcluster See "Explanation of Responses" | 5,887 | $5.17 | $30.4K | SEC ↗ |
| Dec 5, 2025 | WINMILL MARK CAMPBELLcluster Director, President and CEO | 3,600 | $5.09 | $18.3K | SEC ↗ |
| Dec 5, 2025 | WINMILL MARK CAMPBELLcluster Director, President and CEO | 800 | $5.05 | $4.0K | SEC ↗ |
| Dec 4, 2025 | WINMILL MARK CAMPBELLcluster Director, President and CEO | 6,000 | $5.14 | $30.8K | SEC ↗ |
| Dec 3, 2025 | WINMILL MARK CAMPBELLcluster Director, President and CEO | 6,000 | $5.13 | $30.8K | SEC ↗ |
| Dec 2, 2025 | Klimoski Donald IIcluster General Counsel | 446 | $5.05 | $2.3K | SEC ↗ |
| Dec 1, 2025 | WINMILL & CO. INCcluster "See ""Explanation of Responses""" | 3,062 | $5.18 | $15.9K | SEC ↗ |
| Nov 28, 2025 | WINMILL & CO. INCcluster "See ""Explanation of Responses""" | 3,342 | $5.16 | $17.2K | SEC ↗ |
| Nov 26, 2025 | WINMILL & CO. INCcluster "See ""Explanation of Responses""" | 4,873 | $5.17 | $25.2K | SEC ↗ |
| Nov 25, 2025 | WINMILL & CO. INCcluster "See ""Explanation of Responses""" | 4,547 | $5.18 | $23.6K | SEC ↗ |
| Nov 24, 2025 | WINMILL & CO. INCcluster "See ""Explanation of Responses""" | 4,064 | $5.14 | $20.9K | SEC ↗ |
| Nov 21, 2025 | WINMILL & CO. INCcluster "See ""Explanation of Responses""" | 6,226 | $5.09 | $31.7K | SEC ↗ |
SELF insider buying — FAQ
- Are insiders buying SELF stock?
- Yes — 8 distinct insiders have bought SELF (Global Self Storage, Inc.) on the open market, including 4 cluster buys where two or more insiders bought within a rolling window. The most recent qualifying activity was Sep 11, 2026.
- How much SELF stock have insiders bought?
- Insiders have bought a combined $1.5M of SELF across 67 open-market purchases, based on SEC Form 4 filings.
- What is an insider cluster buy in SELF?
- A cluster buy is two or more distinct Global Self Storage, Inc. insiders — officers, directors, or 10% owners — each buying SELF on the open market within a rolling window. SELF has 4 detected cluster buys to date.
- Where does this SELF insider trading data come from?
- Every figure is parsed directly from SEC Form 4 filings on EDGAR, and each purchase on this page links back to its original filing document.
How we track insider buying in SELF
We continuously poll SEC EDGAR for new Form 4 filings and parse every open-market purchase (transaction code P). A cluster is recorded when two or more distinct insiders — officers, directors, or 10% owners — each buy SELF within a rolling window. We track clusters at every company size, from micro-caps to mega-caps. Every figure on this page traces back to an official filing; open any row to jump straight to the source document. What counts as a cluster buy?
This page is informational and reflects public filing data. It is not investment advice or a recommendation regarding SELF.