Mark Lawrence Plaumann, Director at Mammoth Energy Services, bought TUSK on Sep 16, 2026
Data as of Oct 16
- Traded
- Sep 16, 2026
- Disclosed
- Sep 17, 2026
- Filed
- 1 day after the trade
Form 4s are due within two business days.
Official filing (SEC Form 4) ↗
The price around the disclosure
TUSK since disclosure
−16.0%
Similar stocks (XLI) since disclosure
−0.7%
XLI — its sector index fund
Change in closing price from Sep 17, 2026 (the first trading day on or after disclosure) to Oct 16, 2026. Dividends excluded. Not a return anyone earned.
Our take
None of our tested rules fired on this trade.