Zhou Rong bought AMPH
March 9, 2026 · Form 4 insider transaction
Zhou Rong bought 39,432 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
39,432
Price
$0.00
Total value
N/A
InsiderZhou Rong
RoleOfficer
SecurityCommon Srock
Transaction codeA: Grant or award
Transaction dateMarch 9, 2026
Filing dateMarch 11, 2026
Shares owned after174,994
OwnershipDirect
10b5-1 planNo
AmendedNo
Footnotes
The reported shares are represented by restricted stock units, or RSUs, which vest in four equal annual installments beginning on March 9, 2027.