Arkolith/Insider Trading/AMPH/Form 4

Zhou Rong

SENIOR EVP, PRODUCTION CENTERAmphastar Pharmaceuticals, Inc. (AMPH) · full profile →Form 4 · filed Mar 11, 2026
No Open-Market Flow
Open-Market Buys
$0
Open-Market Sells
$0
Net Open-Market Flow
$0
Transactions
3
2 non-derivative · 1 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
Mar 10, 2026Tax withholding(F)2K$18.91$42K173K
Mar 9, 2026Grant(A)39K—$0175K

Derivative Transactions (Table II)

DateActionSharesPriceValueOwned After
Mar 9, 2026Grant(A)81K—$081K

Transaction Codes

F
Shares withheld for taxes
A
Grant / award

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0001645326-26-000008) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4 XML