Winmill Mark Campbell: insider buys
Every open-market stock purchase reported by Winmill Mark Campbell to the SEC on Form 4.
Total bought$125.94K
Purchases3
Companies1
Last purchase filedSep 11, 2026
Return on these buys-5.8%
Winmill Mark Campbell has made 3 open-market purchases worth $125.94K in 1 company since Dec 5, 2025, according to SEC Form 4 filings. The most recent was filed on Sep 11, 2026: 4,000 shares of SELF at $5.16 (President and CEO, Director), worth $20.64K. The largest was $83.98K of SELF on Dec 3, 2025. Taken together, these purchases are down 6% at the latest closing prices (split-adjusted, weighted by amount).
Companies Winmill Mark Campbell bought
| Ticker | Company | Role | Buys | Total | Since buy | Last filed |
|---|---|---|---|---|---|---|
| SELF | Global Self Storage, Inc. | President and CEO, Director | 3 | $125.94K | -5.8% | Sep 11 |
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| Filed | Stock | Insider | Value | Shares | Price | Since buy | Stake | Trade | |
|---|---|---|---|---|---|---|---|---|---|
| Sep 11 | SELFGlobal Self Storage, Inc. | Winmill Mark CampbellPresident and CEO, Director | $20.64K | 4,000 | $5.16 | -5.8% | +1% | Sep 9 | SEC |
| May 15 | SELFGlobal Self Storage, Inc. | Winmill Mark CampbellPresident and CEO, Director | $21.32K | 4,000 | $5.33 | -8.8% | +1% | May 14 | SEC |
| Dec 5 | SELFGlobal Self Storage, Inc. | Winmill Mark CampbellPresident and CEO, Director | $83.98K | 16,400 | $5.12 | -5.1% | +5% | Dec 3 | SEC |