Momentus director entity buys 1,500 MNTS shares

Momentus Inc. director Chris Hadfield, through Hadfield Inc., completed an open-market purchase of 1,500 shares of Class A Common Stock at $5.32 per share, held indirectly.

Rhea-AI Filing Summary

Momentus Inc. director Chris Hadfield, through Hadfield Inc., completed an open-market purchase of 1,500 shares of Class A Common Stock at $5.32 per share, held indirectly.

He also holds 971 Class A shares directly and 913 Restricted Stock Units, each representing one share. These RSUs vest in full on the earlier of June 30, 2026 or the day before the 2026 annual meeting, subject to his continued board service.

Insider Trade Summary

Net Buyer: 1,500 shares

Net Buy 3 txns

Insider Hadfield Chris

Role Director

Bought 1,500 shs ($8K)

Type	Security	Shares	Price	Value
Purchase	Class A Common Stock	1,500	$5.32	$8K
holding	Restricted Stock Units	--	--	--
holding	Class A Common Stock	--	--	--

Holdings After Transaction: Class A Common Stock — 1,500 shares (Indirect, Hadfield Inc.); Restricted Stock Units — 913 contracts (Direct); Class A Common Stock — 971 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 June 30, 2026 or the day before the 2026 Annual Meeting, subject to the Reporting Person's continued service as a member of the Board of Directors through such vesting date.

Key Figures

Open-market purchase: 1,500 shares at $5.32 Indirect holdings: 1,500 shares Direct common shares: 971 shares +2 more

5 metrics

Open-market purchase 1,500 shares at $5.32 Class A Common Stock bought indirectly via Hadfield Inc. on May 15, 2026

Indirect holdings 1,500 shares Class A Common Stock held through Hadfield Inc. after transaction

Direct common shares 971 shares Class A Common Stock held directly by Chris Hadfield

Restricted Stock Units 913 RSUs Each RSU represents one Class A share, subject to vesting

RSU vesting date June 30, 2026 Or the day before the 2026 annual meeting, whichever occurs first

Key Terms

Restricted Stock Units, open-market purchase, indirect ownership, contingent right

4 terms

Restricted Stock Units financial

"The RSUs will vest in full on the earlier to occur of June 30, 2026 or the day before the 2026 Annual Meeting"

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.

open-market purchase financial

"transaction_action": "open-market purchase""

An open-market purchase is when an investor or a company buys shares on a public stock exchange at the going market price, rather than through a private deal. It matters to investors because these purchases change how many shares are available, can push the stock price up or signal confidence from large buyers, and often affect per-share metrics like earnings—think of it like someone buying lots of apples off a grocery shelf, reducing supply and potentially raising the price.

indirect ownership financial

"direct_or_indirect": "I", "nature_of_ownership": "Hadfield Inc.""

contingent right financial

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

FAQ

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

What insider transaction did Chris Hadfield report for Momentus (MNTS)?

Chris Hadfield reported an open-market purchase of 1,500 Momentus Class A Common Stock shares at $5.32 per share. The shares are held indirectly through Hadfield Inc., an entity associated with him, reflecting increased exposure to the company’s equity.

How are Chris Hadfield’s new 1,500 Momentus (MNTS) shares held?

The 1,500 newly acquired Momentus Class A shares are held indirectly through Hadfield Inc. This means an entity associated with Chris Hadfield owns the shares, rather than Hadfield holding them directly in his personal name.

What direct Momentus (MNTS) share holdings does Chris Hadfield report?

Chris Hadfield reports direct ownership of 971 Momentus Class A Common Stock shares. These are separate from the 1,500 shares held indirectly through Hadfield Inc. and from his Restricted Stock Units tied to future share delivery.

What Restricted Stock Units does Chris Hadfield hold at Momentus (MNTS)?

He holds 913 Restricted Stock Units, each representing a contingent right to receive one Momentus Class A share. These RSUs vest in full on the earlier of June 30, 2026 or the day before the 2026 annual meeting, assuming continued board service.

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

His 913 Restricted Stock Units vest in full on the earlier of June 30, 2026 or the day before Momentus’s 2026 annual shareholder meeting. Vesting is conditioned on his continued service as a board member through the applicable vesting date.

What does the Form 4 reveal about Chris Hadfield’s equity exposure to Momentus (MNTS)?

The Form 4 shows 1,500 shares held indirectly via Hadfield Inc., 971 Class A shares held directly, and 913 RSUs that may convert into shares upon vesting. Together, these positions outline his current reported equity exposure to Momentus.

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

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Accepted by SEC EDGAR 05/18/2026 - 06:05 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.

3050 KENNETH ST.

(Street)

SANTA CLARA CALIFORNIA 95054

(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)
05/15/2026

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	05/15/2026		P		1,500	A	$5.32	1,500	I	Hadfield Inc.
Class A Common Stock								971	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)							(2)	(2)	Class A Common Stock	913		913	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 June 30, 2026 or the day before the 2026 Annual Meeting, subject to the Reporting Person's continued service as a member of the Board of Directors through such vesting date.

	/s/ Chris Hadfield	05/18/2026
	** 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)