Zhang Jack Y. sold AMPH
March 10, 2026 · Form 4 insider transaction
Zhang Jack Y. sold 4,395 shares of Amphastar Pharmaceuticals, Inc. at $18.91 per share, a transaction worth $83.1K. The trade was recorded as shares withheld for taxes and disclosed on an SEC Form 4, filed 1 day after the transaction.
Direction
Disposed (sell-side)
Shares
4,395
Price
$18.91
Total value
$83.1K
InsiderZhang Jack Y.
RoleDirector, 10% owner
SecurityCommon Stock
Transaction codeF: Shares withheld for taxes
Transaction dateMarch 10, 2026
Filing dateMarch 11, 2026
Shares owned after1,248,033
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 RSUs.; The securities are held of record by Mary Z. Luo. The reporting persons are husband and wife.