Yakob Liawatidewi - 04 Mar 2026 Form 4 Insider Report for Amphastar Pharmaceuticals, Inc. (AMPH)

Role
EVP CORP ADMIN CENTER, Director
Signature
/s/ Yakob Liawatidewi
Issuer symbol
AMPH
Transactions as of
04 Mar 2026
Net transactions value
$0
Form type
4
Filing time
06 Mar 2026, 21:04:17 UTC
Previous filing
18 Mar 2025
Next filing
10 Mar 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Liawatidewi Yakob EVP CORP ADMIN CENTER, Director C/O AMPHASTAR PHARMACEUTICALS, INC., 11570 6TH STREET, RANCHO CUCAMONGA /s/ Yakob Liawatidewi 06 Mar 2026 0001743927

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction AMPH Common Stock Tax liability -965 -1.1% $19.96* 90,489 04 Mar 2026 Direct F1, F2
holding AMPH Common Stock 2,459 04 Mar 2026 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 Includes 545 shares acquired on May 31, 2025 under the Issuer's 2014 Employee Stock Purchase Plan.
F3 The reported shares are held of record by the Yakob and Sunmoon Trust dated July 25, 2013 for which the reporting person serves as a trustee.