Rong Zhou - Mar 15, 2022 Form 4 Insider Report for Amphastar Pharmaceuticals, Inc. (AMPH)

Role
EVP, Production Center
Signature
/s/ Eva Wen, by power of attorney
Stock symbol
AMPH
Transactions as of
Mar 15, 2022
Transactions value $
-$57,390
Form type
4
Date filed
3/17/2022, 05:07 PM
Previous filing
Mar 1, 2022
Next filing
Mar 18, 2022

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction AMPH Common Stock Award $0 +13.7K +19.43% $0.00 84K Mar 15, 2022 Direct F1
transaction AMPH Common Stock Tax liability -$57.4K -1.65K -1.97% $34.74 82.3K Mar 15, 2022 Direct F2
holding AMPH Common Stock 99.7K Mar 15, 2022 See footnote F3
holding AMPH Common Stock 5K Mar 15, 2022 See footnote F4

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 +31.5K $0.00 31.5K Mar 15, 2022 Common Stock 31.5K $34.74 Direct F5
* 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 15, 2023.
F2 The reported shares were withheld to satisfy the reporting person's tax liability in connection with the vesting of RSUs.
F3 The shares are held of record by the Zhou Family Trust for which the reporting person serves as a trustee.
F4 The shares are held of record by the reporting person's spouse.
F5 The shares subject to the option vest in four equal annual installments beginning on March 15, 2023.