Rong Zhou - 10 Mar 2025 Form 4 Insider Report for Amphastar Pharmaceuticals, Inc. (AMPH)

Role
SENIOR EVP, PRODUCTION CENTER
Signature
/s/ Eva Wen, by power of attorney
Issuer symbol
AMPH
Transactions as of
10 Mar 2025
Transactions value $
$0
Form type
4
Filing time
12 Mar 2025, 16:53:02 UTC
Previous filing
10 Mar 2025
Next filing
18 Mar 2025
SEC
View on sec.gov

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction AMPH Common Srock Award $0 +24,692 +21.3% $0.000000 140,686 10 Mar 2025 Direct F1
holding AMPH Common Stock 99,668 10 Mar 2025 See footnote F2
holding AMPH Common Stock 5,000 10 Mar 2025 See footnote F3

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction AMPH Employee Stock Option (right to buy) Award $0 +52,437 $0.000000 52,437 10 Mar 2025 Common Stock 52,437 $28.41 Direct F4
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The reported shares are represented by restricted stock units, or RSUs, which vest in four equal annual installments beginning on March 10, 2026.
F2 The shares are held of record by the Zhou Family Trust for which the reporting person serves as a trustee.
F3 The shares are held of record by the reporting person's spouse.
F4 The shares subject to the option vest in four equal annual installments beginning on March 10, 2026.