Mark Campbell Winmill, President and CEO at Global Self Storage, Inc. (SELF), bought 1,400 shares at $4.18 ($6K) on 2018-05-18, disclosed to the SEC on 2018-05-21.
Open-market purchase of $6k SELF by President and CEO. Below the thresholds we flag for high-conviction alerts (no C-suite role, rare reversal, cluster, or A-grade history). Context: insider career grade C.
Nothing distinguishes this filing.
| Filing → |
| SELF | BUY | 2025-12-05 | $84K | — | Filing → |
| SELF | BUY | 2025-05-20 | $57K | — | Filing → |
| SELF | BUY | 2024-05-30 | $114K | — | Filing → |