Time on boards
- Boards served
- 2
- Current seats
- 2
- Board service
- 3 years
- Director since
- 2024
3 years of board service in total across 2 boards, counting each seat separately. Longest: MARA Holdings Inc., 2 years.
Chief executive roles
Shareholder support
Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
-
USA Rare Earth Inc. June 3, 2026100.0%
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 |
|---|---|---|---|---|---|
| Oct 2, 2026 | USA Rare Earth Inc. | Open-market sale | −88,391 | $13.75 | $1,215,376 |
| Oct 1, 2026 | USA Rare Earth Inc. | Option exercise | +83,554 | $13.80 | $1,153,045 |
| Oct 1, 2026 | USA Rare Earth Inc. | Option exercise | +104,443 | $13.80 | $1,441,313 |
| Oct 1, 2026 | USA Rare Earth Inc. | Option exercise | +31,333 | $13.80 | $432,395 |
| Feb 13, 2026 | MARA Holdings Inc. | Grant or award | +82,759 | — | — |
| Feb 28, 2025 | MARA Holdings Inc. | Grant or award | +43,103 | — | — |
| Dec 20, 2024 | MARA Holdings Inc. | Grant or award | +10,477 | — | — |
Questions about Barbara Humpton
What boards is Barbara Humpton on?
Barbara Humpton sits on the boards of MARA Holdings Inc. and USA Rare Earth Inc.
What company is Barbara Humpton the CEO of?
Barbara Humpton has been Chief Executive Officer of USA Rare Earth Inc. since October 2025.
How long has Barbara Humpton served on boards?
Our records show at least 3 years of board service across 2 boards, the earliest from 2024.
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