| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
Former Chief Executive Officer | Director
3 companies
Barbara Humpton is Director at MARA and has filed Form 4s across 3 companies. Barbara Humpton's net worth is not public. Form 4 filings only show shares in the companies where this person is an insider; those holdings are worth an estimated $2.1M at current prices.
The biggest single holding is USAR (~$1.1M) as Former Chief Executive Officer. The USAR filings lean toward selling, a net 88,391 shares.
Barbara Humpton has 6 Form 4 filings on record from November 2021 to October 2026, across 3 companies: Former Chief Executive Officer at USA Rare Earth (USAR), 2025–2026; Director at Mara (MARA), 2024–2026; Director at Fluence Energy (FLNC), 2021.
The 11 reported transactions were 3 option exercises, 3 stock awards, 3 option or other derivative awards and 1 open-market sale, plus smaller numbers of other types.
Counted by filing, the open-market trades come to 1 purchase worth about $112K and 1 sale worth about $1.2M.
The only open-market purchase was 4,000 shares of FLNC at an average $28.00 on November 1, 2021, about $112K. Twelve months later FLNC was down 60%.
The only open-market sale was 88,391 shares of USAR at an average $13.75 on October 2, 2026, about $1.2M.