PETERS WILLIAM J sold AMPH
September 21, 2026 · Form 4 insider transaction
PETERS WILLIAM J sold 4,139 shares of Amphastar Pharmaceuticals, Inc. at $25.00 per share, a transaction worth $103.5K. The trade was recorded as open-market sale under a pre-scheduled Rule 10b5-1 plan and disclosed on an SEC Form 4, filed 2 days after the transaction.
Direction
Disposed (sell-side)
Shares
4,139
Price
$25.00
Total value
$103.5K
InsiderPETERS WILLIAM J
RoleOfficer, Director
SecurityCommon Stock
Transaction codeS: Open-market sale
Transaction dateSeptember 21, 2026
Filing dateSeptember 23, 2026
Shares owned after168,707
OwnershipDirect
10b5-1 planYes
AmendedNo
Footnotes
The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 10, 2026.