Rong Zhou - 20 Jul 2021 Form 4 Insider Report for Amphastar Pharmaceuticals, Inc. (AMPH)

Signature
/s/ Eva Wen, by power of attorney
Issuer symbol
AMPH
Transactions as of
20 Jul 2021
Transactions value $
-$52,337
Form type
4
Filing time
22 Jul 2021, 16:13:08 UTC
Previous filing
10 Jun 2021
Next filing
27 Jul 2021

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction AMPH Common Stock Options Exercise $54.4K +5.19K +6.01% $10.48* 91.4K 20 Jul 2021 Direct
transaction AMPH Common Stock Sale -$107K -5.19K -5.67% $20.57 86.2K 20 Jul 2021 Direct F1
holding AMPH Common Stock 99.7K 20 Jul 2021 See footnote F2
holding AMPH Common Stock 5K 20 Jul 2021 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) Options Exercise $0 -5.19K -20.75% $0.00 19.8K 20 Jul 2021 Common Stock 5.19K $10.48 Direct F4
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 16, 2021.
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 Shares subject to the option are fully vested and immediately exercisable.