Mark Campbell Winmill, President and CEO at Global Self Storage, Inc. (SELF), bought 4,000 shares at $5.33 ($21K) on 2026-05-14, disclosed to the SEC on 2026-05-15.
Seasonal purchase ($21k) by President and CEO — this insider has traded SELF in May in at least three consecutive prior years. Pattern-driven, low signal.
Negative factors outweigh the positive ones.
| Filing → |
| SELF | BUY | 2025-05-20 | $57K | — | Filing → |
| SELF | BUY | 2024-05-30 | $114K | — | Filing → |
| SELF | BUY | 2023-11-17 | $35K | — | Filing → |