Mark Chalmers
President & CEO at Energy Fuels Inc
Sits on 1 board. Last updated September 28, 2026
Time on boards
- Boards served
- 1
- Current seats
- 1
- Board service
- 4 years
- Director since
- 2023
4 years of board service in total across 1 board, counting each seat separately. Longest: Energy Fuels Inc, 3 years.
Energy Fuels Inc
Director · CEO
Chief executive roles
Energy Fuels Inc
· President & CEO
Dates unknown
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
| Date | Company | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Jan 27, 2026 | Energy Fuels Inc | Grant or award | +38,289 | — | — |
| Jan 27, 2026 | Energy Fuels Inc | Shares withheld for tax | −59,407 | $24.16 | $1,435,273 |
| Nov 19, 2025 | Energy Fuels Inc | Open-market sale | −150,000 | $15.60 | $2,340,000 |
| Jan 29, 2025 | Energy Fuels Inc | Grant or award | +166,042 | — | — |
| Jan 27, 2025 | Energy Fuels Inc | Shares withheld for tax | −45,372 | $5.17 | $234,573 |
| Dec 12, 2024 | Energy Fuels Inc | Grant or award | +19,096 | — | — |
| May 7, 2024 | Energy Fuels Inc | Open-market purchase | +16,838 | $5.86 | $98,671 |
| Jan 27, 2024 | Energy Fuels Inc | Shares withheld for tax | −46,856 | $7.30 | $342,049 |
| Jan 25, 2024 | Energy Fuels Inc | Grant or award | +88,260 | — | — |
| Nov 15, 2023 | Energy Fuels Inc | Option exercise | +161,729 | $8.27 | $1,337,499 |
| Nov 15, 2023 | Energy Fuels Inc | Shares withheld for tax | −70,350 | $8.27 | $581,795 |
| May 11, 2023 | Energy Fuels Inc | Option exercise | +54,938 | $6.48 | $355,998 |
| May 11, 2023 | Energy Fuels Inc | Shares withheld for tax | −23,517 | $6.48 | $152,390 |
| May 10, 2023 | Energy Fuels Inc | Option exercise | +193,969 | $6.55 | $1,270,497 |
| May 10, 2023 | Energy Fuels Inc | Shares withheld for tax | −84,348 | $6.55 | $552,479 |
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