Jack Y. Zhang - 10 Mar 2025 Form 4 Insider Report for Amphastar Pharmaceuticals, Inc. (AMPH)

Role
CEO & CHIEF SCIENTIFIC OFFICER, Director, 10%+ Owner
Signature
/s/ Eva Wen, by power of attorney for Jack Y. Zhang
Issuer symbol
AMPH
Transactions as of
10 Mar 2025
Transactions value $
$0
Form type
4
Filing time
12 Mar 2025, 16:03:21 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 Stock Award $0 +116,226 +4.66% $0.000000 2,609,382 10 Mar 2025 Direct F1
transaction AMPH Common Stock Award $0 +48,996 +4.46% $0.000000 1,148,257 10 Mar 2025 See footnote F1, F2
holding AMPH Common Stock 6,827,679 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 +246,821 $0.000000 246,821 10 Mar 2025 Common Stock 246,821 $28.41 Direct F4
transaction AMPH Employee Stock Option (right to buy) Award $0 +104,052 $0.000000 104,052 10 Mar 2025 Common Stock 104,052 $28.41 See footnote F2, 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 securities are held of record by Mary Z. Luo. The reporting persons are husband and wife.
F3 The shares are held of record by Applied Physics and Chemistry Laboratories, Inc., of which the reporting persons and The Bill Luobei Zhang 2004 Irrevocable Trust are the sole owners.
F4 The shares subject to the option vest in four equal annual installments beginning on March 10, 2026.