PETERS WILLIAM J bought AMPH
March 9, 2026 · Form 4 insider transaction
PETERS WILLIAM J bought 121,071 shares of Amphastar Pharmaceuticals, Inc. at $0.00 per share, a transaction worth N/A. The trade was recorded as grant or award and disclosed on an SEC Form 4, filed 2 days after the transaction.
Direction
Acquired (buy-side)
Shares
121,071
Price
$0.00
Total value
N/A
InsiderPETERS WILLIAM J
RoleOfficer, Director
SecurityEmployee Stock Option (right to buy)
Transaction codeA: Grant or award
Transaction dateMarch 9, 2026
Filing dateMarch 11, 2026
Shares owned after121,071
OwnershipDirect
10b5-1 planNo
AmendedNo
Footnotes
The shares subject to the option vest in four equal annual installments beginning on March 9, 2027.