Zhang Jack Y. sold AMPH
March 4, 2026 · Form 4 insider transaction
Zhang Jack Y. sold 2,432 shares of Amphastar Pharmaceuticals, Inc. at $19.96 per share, a transaction worth $48.5K. The trade was recorded as shares withheld for taxes and disclosed on an SEC Form 4, filed 2 days after the transaction.
Direction
Disposed (sell-side)
Shares
2,432
Price
$19.96
Total value
$48.5K
InsiderZhang Jack Y.
RoleDirector, 10% owner
SecurityCommon Stock
Transaction codeF: Shares withheld for taxes
Transaction dateMarch 4, 2026
Filing dateMarch 6, 2026
Shares owned after1,183,043
OwnershipIndirect
10b5-1 planNo
AmendedNo
Footnotes
The reported shares were withheld to satisfy the reporting person's tax liability in connection with the vesting of restricted stock units, or RSUs.; The securities are held of record by Mary Z. Luo. The reporting persons are husband and wife.