Form 4 Tracker
Barbara Humpton

Director; Former Chief Executive Officer, Other · 2 filings · Latest: Oct 1, 2026

MARA Holdings, Inc.
USA Rare Earth, Inc.
TickerOwnerRelationshipDateTransactionCost#SharesValue ($)#Shares TotalSEC Filing
USAR
Barbara HumptonFormer Chief Executive Officer, OtherOct 2, 2026
Sale
$13.7588,391$1.2M130,939
USAR
Barbara HumptonFormer Chief Executive Officer, OtherOct 1, 2026
Option Exercise
$13.80219,330$3.0M219,330
USAR
Humpton Barbara—Oct 2, 2026
Proposed Sale
$13.7588,391$1.2M—