William J. Peters - May 18, 2023 Form 4 Insider Report for Amphastar Pharmaceuticals, Inc. (AMPH)

Signature
/s/ William J. Peters
Stock symbol
AMPH
Transactions as of
May 18, 2023
Transactions value $
-$342,192
Form type
4
Date filed
5/22/2023, 06:49 PM
Previous filing
Apr 18, 2023
Next filing
Jun 5, 2023

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction AMPH Common Stock Options Exercise $140K +10.5K +9.99% $13.35 116K May 18, 2023 Direct
transaction AMPH Common Stock Sale -$466K -10.5K -9.08% $44.35 105K May 18, 2023 Direct F1
transaction AMPH Common Stock Tax liability -$16.7K -378 -0.36% $44.16 105K May 19, 2023 Direct F2

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 -10.5K -36.22% $0.00 18.5K May 18, 2023 Common Stock 10.5K $13.35 Direct F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

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 May 18, 2022.
F2 The reported shares were withheld to satisfy the reporting person's tax liability in connection with the vesting of restricted stock units, or RSUs.
F3 Shares subject to the option are fully vested and immediately exercisable.