Carl Christenson - Aug 15, 2021 Form 4 Insider Report for Altra Industrial Motion Corp. (AIMC)

Role: Chairman and CEO, Director
Signature: Todd Patriacca, Attorney-in-fact
Stock symbol: AIMC
Transactions as of: Aug 15, 2021
Transactions value $: -$659,018
Form type: 4
Date filed: 8/16/2021, 02:47 PM
Previous filing: May 14, 2021
Next filing: Feb 10, 2022

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	AIMC	Common Stock, par value $0.001	Tax liability	-$179K	-2.91K	-5.85%	$61.70	46.8K	Aug 15, 2021	Direct	F1
transaction	AIMC	Common Stock, par value $0.001	Options Exercise	$0	+17.5K	+37.49%	$0.00	64.3K	Aug 15, 2021	Direct
transaction	AIMC	Common Stock, par value $0.001	Tax liability	-$480K	-7.78K	-12.09%	$61.70	56.5K	Aug 15, 2021	Direct	F2
holding	AIMC	Common Stock, par value $0.001						127K	Aug 15, 2021	By Trust	F3
holding	AIMC	Common Stock, par value $0.001						300	Aug 15, 2021	By Children, 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	AIMC	Restricted Stock Unit	Options Exercise	$0	-17.5K	-36.04%	$0.00	31.1K	Aug 15, 2021	Common Stock	17.5K		Direct	F5, F6

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Shares forfeited in lieu of taxes upon vesting of Restricted Stock
F2	This transaction relates to the withholding for tax purposes in connection with the vesting and distribution of restricted units.
F3	The shares are held in a trust for which Mr. Christenson serves as trustee.
F4	Shares are held by Reporting Persons children.
F5	Restricted stock units are payable in shares of common stock on a one-to-one basis.
F6	Each RSU represents a contingent right to receive one share of common stock upon settlement. The RSU's vest in four equal installments on August 15th 2021, 2022, 2023 and 2024.