Petersen Floyd F. bought AMPH
November 13, 2025 · Form 4 insider transaction
Petersen Floyd F. bought 16,679 shares of Amphastar Pharmaceuticals, Inc. at $16.69 per share, a transaction worth $278.4K. The trade was recorded as option exercise and disclosed on an SEC Form 4, filed 4 days after the transaction.
Direction
Acquired (buy-side)
Shares
16,679
Price
$16.69
Total value
$278.4K
InsiderPetersen Floyd F.
RoleDirector
SecurityCommon Stock
Transaction codeM: Option exercise
Transaction dateNovember 13, 2025
Filing dateNovember 17, 2025
Shares owned after92,210
OwnershipDirect
10b5-1 planNo
AmendedNo