Momentus director granted 6,039 RSUs and exercises shares

Momentus Inc. director Chris Hadfield reported equity-related transactions involving Class A Common Stock.

Rhea-AI Filing Summary

Momentus Inc. director Chris Hadfield reported equity-related transactions involving Class A Common Stock. He acquired 913 shares through the exercise or conversion of a derivative security at a stated price of $0.0000 per share, bringing his direct holdings to 1,884 shares.

He was also granted 6,039 Restricted Stock Units, each representing a contingent right to receive one share of Class A Common Stock. These RSUs will vest in full on the earlier of May 18, 2027 or the day of the 2027 Annual Meeting, subject to his continued service on the Board of Directors through that vesting date.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Hadfield Chris

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units	6,039	$0.00	$0.00
Exercise	Class A Common Stock	913	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units — 6,039 contracts (Direct); Class A Common Stock — 1,884 shares (Direct)

Footnotes (2)

1. F1. Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of Momentus Inc. Class A Common Stock.
2. F2. The RSUs will vest in full on the earlier to occur of May 18, 2027 or the day of the 2027 Annual Meeting, subject to the Reporting Person's continued service as a member of the Board of Directors through such vesting date.

Key Figures

Shares acquired via derivative: 913 shares Direct holdings after transaction: 1,884 shares RSUs granted: 6,039 RSUs +3 more

6 metrics

Shares acquired via derivative 913 shares Class A Common Stock acquired on May 18, 2026

Direct holdings after transaction 1,884 shares Class A Common Stock held directly after Form 4 transactions

RSUs granted 6,039 RSUs Restricted Stock Units awarded on May 18, 2026

RSU vesting date May 18, 2027 Vests earlier of May 18, 2027 or 2027 Annual Meeting

RSU-to-share ratio 1 RSU : 1 share Each RSU represents one Class A Common Stock share

Stated transaction price $0.0000 per share Price per share for the 913-share derivative exercise

Key Terms

Restricted Stock Units, contingent right, derivative security, vest in full, +1 more

5 terms

Restricted Stock Units financial

"The RSUs will vest in full on the earlier to occur of May 18, 2027"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

contingent right financial

"Each Restricted Stock Unit (RSU) represents a contingent right to receive one share"

derivative security financial

"transaction_action": "derivative exercise/conversion"

A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.

vest in full financial

"The RSUs will vest in full on the earlier to occur of May 18, 2027"

Annual Meeting financial

"or the day of the 2027 Annual Meeting, subject to the Reporting Person's continued service"

A company's annual meeting is a yearly gathering where owners (shareholders) and the board review performance, ask questions, and vote on key matters like electing directors, approving auditor choices, and sometimes setting pay or dividend policies. For investors it matters because decisions made and votes cast can change who runs the company, influence strategy and payouts, and affect the value or direction of their investment—similar to a homeowners’ meeting where rules and leaders that shape your property’s value are decided.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transactions did Chris Hadfield report at Momentus Inc. (MNTS)?

Chris Hadfield reported acquiring 913 shares of Momentus Class A Common Stock via exercise or conversion of a derivative security and receiving an award of 6,039 Restricted Stock Units, all held directly, according to the Form 4 insider filing.

How many Momentus (MNTS) shares does Chris Hadfield hold after this Form 4?

After the reported transactions, Chris Hadfield directly holds 1,884 shares of Momentus Class A Common Stock. This figure reflects his position following the 913-share derivative exercise disclosed in the Form 4 filing for the stated transaction date.

What are the terms of Chris Hadfield’s 6,039 RSU award at Momentus (MNTS)?

Hadfield received 6,039 Restricted Stock Units, each representing a contingent right to one Class A share. The RSUs vest in full on the earlier of May 18, 2027 or the 2027 Annual Meeting, contingent on his continued service on the Board of Directors.

When will Chris Hadfield’s Momentus (MNTS) RSUs vest?

The 6,039 RSUs will vest in full on the earlier of May 18, 2027 or the day of the 2027 Annual Meeting. Vesting is conditioned on Hadfield’s continued service as a member of the Board of Directors through that date.

Does Chris Hadfield’s RSU grant at Momentus (MNTS) involve cash payments?

The filing describes the RSUs as equity awards, each representing a contingent right to receive one share of Class A Common Stock. The reported transaction price per RSU is $0.0000, indicating a compensation grant rather than a cash purchase in the open market.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 4 Insider Transactions: What Each Field Means →

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Accepted by SEC EDGAR 05/20/2026 - 07:59 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a 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). See Instruction 10.

1. Name and Address of Reporting Person^*

Hadfield Chris

(Last) (First) (Middle)

C/O MOMENTUS INC.

1762 AUTOMATION PARKWAY

(Street)

SAN JOSE CALIFORNIA 95131

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Momentus Inc. [ MNTS ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/18/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	05/18/2026		M		913	A	$0	1,884	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units	(1)	05/18/2026		A		6,039		(2)	(2)	Class A Common Stock	6,039	$0	6,039	D

Explanation of Responses:

1. Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of Momentus Inc. Class A Common Stock.

2. The RSUs will vest in full on the earlier to occur of May 18, 2027 or the day of the 2027 Annual Meeting, subject to the Reporting Person's continued service as a member of the Board of Directors through such vesting date.

	/s/ John Rood, Attorney-in-Fact	05/20/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)