PETERS WILLIAM J bought AMPH
August 7, 2026 · Form 4 insider transaction
PETERS WILLIAM J bought 5,053 shares of Amphastar Pharmaceuticals, Inc. at $19.79 per share, a transaction worth $100.0K. 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
5,053
Price
$19.79
Total value
$100.0K
InsiderPETERS WILLIAM J
RoleOfficer, Director
SecurityCommon Stock
Transaction codeM: Option exercise
Transaction dateAugust 7, 2026
Filing dateAugust 11, 2026
Shares owned after181,026
OwnershipDirect
10b5-1 planNo
AmendedNo
Footnotes
Includes 910 shares acquired on May 31, 2026 under the Issuer's 2014 Employee Stock Purchase Plan.