Dawn A. Harms - Dec 31, 2022 Form 4 Insider Report for Momentus Inc. (MNTS)

Role: Chief Revenue Officer
Signature: /s/ Jikun Kim, Attorney-in-Fact
Stock symbol: MNTS
Transactions as of: Dec 31, 2022
Transactions value $: -$20,387
Form type: 4
Date filed: 1/4/2023, 11:15 AM
Previous filing: Mar 22, 2022

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MNTS	Class A Common Stock	Options Exercise	$0	+49.6K	+112.18%	$0.00	93.9K	Dec 31, 2022	Direct
transaction	MNTS	Class A Common Stock	Tax liability	-$20.4K	-26.1K	-27.84%	$0.78	67.8K	Dec 31, 2022	Direct	F1

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	MNTS	Restricted Stock Units	Options Exercise	$0	-49.6K	-100%	$0.00^*	0	Dec 31, 2022	Class A Common Stock	49.6K	$0.00	Direct	F2

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

Explanation of Responses:

Id	Content
F1	These shares were withheld by the Issuer in order to satisfy certain tax withholding obligations in connection with the issuance of vested restricted stock units.
F2	The RSU Award will vest in three equal installments on November 20, 2021, December 31, 2021, and December 31, 2022, subject to Executive's continued Employment through each such vesting date.