Lon Ensler - 01 Aug 2025 Form 4 Insider Report for Momentus Inc. (MNTS)

Role: CFO
Signature: /s/ Lon Ensler
Issuer symbol: MNTS
Transactions as of: 01 Aug 2025
Net transactions value: $0
Form type: 4
Filing time: 10 Sep 2025, 16:08:05 UTC
Previous filing: 04 Apr 2024
Next filing: 03 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Ensler Lon	CFO	C/O MOMENTUS INC., 3901 N. FIRST STREET, SAN JOSE	/s/ Lon Ensler	10 Sep 2025	0002018153

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	Award	$0	+95,000		$0.000000	95,000	01 Aug 2025	Class A Common Stock	95,000		Direct	F1, F2, F3

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

Explanation of Responses:

Id	Content
F1	Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of Momentus, Inc. Class A Common Stock.
F2	This transaction is being reported late due to an administrative error.
F3	Represents a grant of Restricted Stock Units, which vest in four equal annual installments from Vesting Commencement Date, subject to Executive's continued Employment through each such vesting date.