As of the latest Form 4 filed May 15, 2026.
What Global Self Storage Inc insiders — officers, directors and 10% owners — have bought and sold in their own stock, straight from their SEC Form 4 filings. Values are shares × the reported transaction price where both are disclosed.
Buys plotted up, sells down; bar height is the disclosed dollar value (shares × reported price). Our Form 4 history is only complete from mid-2026, so early months are sparse — the series fills in as more filings land. Open-market purchases and sales only.
Newest filing first — the 17 most recent filings for SELF.
| Filed | Trade date | Insider | Transaction | Shares | Price | Value | 10b5-1 | Filing |
|---|---|---|---|---|---|---|---|---|
| 2026-05-15 | 2026-05-14 | WINMILL MARK CAMPBELL President and CEO | PPurchase | +4.00K | $5.33 | $21.3K | No | Form 4 ↗ |
| 2026-05-14 | 2026-05-12 | Zachary William Chester Director | AAward | +94.00 | $5.31 | $499.14 | No | Form 4 ↗ |
| 2026-05-14 | 2026-05-12 | BURKE RUSSELL E III Director | AAward | +94.00 | $5.31 | $499.14 | No | Form 4 ↗ |
| 2026-04-01 | 2026-03-31 | Zachary William Chester Director | AAward | +2.74K | $5.11 | $14.0K | No | Form 4 ↗ |
| 2026-04-01 | 2026-03-31 | BURKE RUSSELL E III Director | AAward | +2.74K | $5.11 | $14.0K | No | Form 4 ↗ |
| 2026-03-25 | 2026-03-24 | Klimoski Donald II General Counsel | AAward | +5.53K | $5.10 | $28.2K | No | Form 4 ↗ |
| 2026-03-25 | 2026-03-24 | Klimoski Donald II, General Counsel | AAward | +5.53K | $5.08 | $28.1K | No | Form 4 ↗ |
| 2026-03-25 | 2026-03-24 | Kamerman Russell Assistant General Counsel | AAward | +500.00 | $5.10 | $2.55K | No | Form 4 ↗ |
| 2026-03-25 | 2026-03-24 | OMalley Thomas Chief Financial Officer | AAward | +5.53K | $5.10 | $28.2K | No | Form 4 ↗ |
| 2026-03-25 | 2026-03-24 | OMalley Thomas, Chief Financial Officer | AAward | +5.53K | $5.08 | $28.1K | No | Form 4 ↗ |
| 2026-03-25 | 2026-03-24 | WINMILL MARK CAMPBELL President and CEO | AAward | +12.7K | $5.10 | $64.6K | No | Form 4 ↗ |
| 2026-03-25 | 2026-03-24 | WINMILL MARK CAMPBELL, President and CEO | AAward | +12.7K | $5.08 | $64.4K | No | Form 4 ↗ |
| 2025-12-05 | 2025-12-05 | WINMILL MARK CAMPBELL President and CEO | PPurchase | +3.60K | $5.09 | $18.3K | No | Form 4 ↗ |
| 2025-12-05 | 2025-12-05 | WINMILL MARK CAMPBELL, President and CEO | PPurchase | +800.00 | $5.05 | $4.04K | No | Form 4 ↗ |
| 2025-12-05 | 2025-12-04 | WINMILL MARK CAMPBELL, President and CEO | PPurchase | +6.00K | $5.14 | $30.8K | No | Form 4 ↗ |
| 2025-12-05 | 2025-12-03 | WINMILL MARK CAMPBELL, President and CEO | PPurchase | +6.00K | $5.13 | $30.8K | No | Form 4 ↗ |
| 2025-12-02 | 2025-12-02 | Klimoski Donald II General Counsel | PPurchase | +446.00 | $5.05 | $2.25K | No | Form 4 ↗ |
Insiders — a company’s officers, directors and holders of more than 10% of its stock — must report any trade in that stock to the SEC on a Form 4 within two business days. Each row here is one transaction from those filings.
The transaction code tells you what happened: Purchase (P) and Sale (S) are open-market trades — the ones markets watch most; Award (A) is a granted stock or unit, Option exercise (M) converts options into shares, and Gift (G) is a transfer for no consideration. Awards, exercises and gifts are largely compensation or administrative, not a directional bet.
One caveat on sales: many are made under a Rule 10b5-1 plan scheduled months in advance, so a sale is not automatically a bearish signal. Insider activity is a noisy input — read it alongside the filings, not on its own.
See also SELF’s full analysis or the market-wide insider trading feed. The tabs above jump to SELF’s other SEC data.
Source: SEC Form 4 filings for SELF, parsed from EDGAR. Transaction prices are as reported in the filing — SEC public-domain data, not market quotes. Values are shares × reported price where both are disclosed; grants and gifts often carry no price. A delayed record of what insiders reported, not a live position or a recommendation.
Research and education only — not financial advice. TENKis not a registered investment adviser or broker-dealer and gives no personalized advice. Every call is impersonal — identical for all users, generated on a schedule from SEC filings plus a delayed/third-party price feed — may be wrong or out of date, and is not a recommendation to buy or sell any security. The operator and an affiliated trading operation may hold or trade the securities TENK rates; see Disclosures. Past performance does not guarantee future results. Do your own research.