Joseph D. Hammer
Chief Executive Officer at Expion Energy Inc.
Sits on 1 board. Last updated September 28, 2026
Time on boards
- Boards served
- 1
- Current seats
- 1
- Board service
- 11 months
- Director since
- 2025
11 months of board service in total across 1 board, counting each seat separately. Longest: Expion Energy Inc., 11 months.
Expion Energy Inc.
Director · Former Chief Executive Officer
Chief executive roles
Expion Energy Inc.
· Chief Executive Officer
2025 – 2026
· Former
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