Rong Zhou - Mar 15, 2025 Form 4 Insider Report for Amphastar Pharmaceuticals, Inc. (AMPH)

Role
SENIOR EVP, PRODUCTION CENTER
Signature
/s/ Eva Wen, by power of attorney
Stock symbol
AMPH
Transactions as of
Mar 15, 2025
Transactions value $
-$87,045
Form type
4
Date filed
3/18/2025, 07:43 PM
Previous filing
Mar 12, 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 Tax liability -$32.6K -1.22K -0.87% $26.66 139K Mar 15, 2025 Direct F1
transaction AMPH Common Srock Tax liability -$54.5K -1.97K -1.41% $27.69 137K Mar 17, 2025 Direct F1
holding AMPH Common Stock 99.7K Mar 15, 2025 See footnote F2
holding AMPH Common Stock 5K Mar 15, 2025 See footnote F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The reported shares were withheld to satisfy the reporting person's tax liability in connection with the vesting of restricted stock units, or RSUs.
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.