Dawn A. Harms - 31 Dec 2021 Form 4 Insider Report for Momentus Inc. (MNTS)

Role: Chief Revenue Officer
Signature: /s/ Jikun Kim, Attorney-in-Fact
Issuer symbol: MNTS
Transactions as of: 31 Dec 2021
Net transactions value: -$109,265
Form type: 4
Filing time: 03 Jan 2022, 15:34:28 UTC
Previous filing: 26 Nov 2021
Next filing: 22 Mar 2022
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MNTS	Class A Common Stock	Options Exercise	$0	+49,648	+239%	$0.000000	70,398	31 Dec 2021	Direct
transaction	MNTS	Class A Common Stock	Tax liability	$109,265	-26,140	-37%	$4.18^*	44,258	31 Dec 2021	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	-49,648	-50%	$0.000000	49,649	31 Dec 2021	Class A Common Stock	49,648	$0.000000	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.