Momentus CTO granted stock and RSU awards

SCHWARZ ROBERT E reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

SCHWARZ ROBERT E reported acquisition or exercise transactions in this Form 4 filing.

Momentus Inc. reported that Chief Technology Officer Robert E. Schwarz received new equity awards. On May 19, 2026, he was granted 6,457 shares of Class A common stock at no cost and 10,635 restricted stock units (RSUs), each representing one share of Class A common stock. The RSUs vest in three equal annual installments from the vesting commencement date, subject to his continued employment. Following these grants, he holds 6,476 shares of Class A common stock and 16,609 RSUs directly.

Insider Trade Summary

Grant/Award: 17,092 shares

Grant/Award 2 txns

Insider SCHWARZ ROBERT E

Role Chief Technology Officer

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units	10,635	$0.00	$0.00
Grant/Award	Class A Common Stock	6,457	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units — 16,609 contracts (Direct); Class A Common Stock — 6,476 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. Represents a grant of RSUs, which vest in three equal annual installments from Vesting Commencement Date, subject to Executive's continued Employment through each such vesting date.

Key Figures

Common stock grant: 6,457 shares RSU grant: 10,635 RSUs Shares after transaction: 6,476 shares +2 more

5 metrics

Common stock grant 6,457 shares Class A common stock awarded on May 19, 2026 at $0.00

RSU grant 10,635 RSUs Restricted Stock Units awarded on May 19, 2026

Shares after transaction 6,476 shares Class A common stock held directly after awards

RSUs after transaction 16,609 RSUs Total restricted stock units held after the grant

RSU-to-share ratio 1 RSU : 1 share Each RSU equals one share of Class A common stock

Key Terms

Restricted Stock Unit (RSU), Vesting Commencement Date, Class A Common Stock, grant of RSUs

4 terms

Restricted Stock Unit (RSU) financial

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

A restricted stock unit (RSU) is a promise from a company to give an employee company shares (or cash equal to their value) at a future date if certain conditions are met, such as staying with the company or hitting performance targets. For investors, RSUs matter because when they convert into actual shares they increase the number of shares available and can create selling pressure as employees cash out—think of them as a future paycheck paid in company stock.

Vesting Commencement Date financial

"vest in three equal annual installments from Vesting Commencement Date"

The vesting commencement date is the starting point when an employee begins earning ownership rights to their promised benefits, such as stock options or retirement contributions. Think of it like the day a savings account is opened—only after this date do the benefits start to grow and become fully available over time. It matters to investors because it marks when the clock begins ticking toward full ownership, affecting the timing and value of these benefits.

Class A Common Stock financial

"one share of Momentus Inc. Class A Common Stock"

Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.

grant of RSUs financial

"Represents a grant of RSUs, which vest in three equal annual installments"

FAQ

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

What insider transaction did Momentus (MNTS) report for CTO Robert Schwarz?

Momentus reported that CTO Robert E. Schwarz received equity awards. He was granted 6,457 shares of Class A common stock and 10,635 restricted stock units as part of his compensation on May 19, 2026.

How many Momentus (MNTS) Class A shares were granted to the CTO?

Robert E. Schwarz received 6,457 shares of Momentus Class A common stock. These shares were granted at a price of $0.00 per share, reflecting a stock award rather than an open-market purchase.

What are the details of the RSU grant to the Momentus (MNTS) CTO?

The CTO received 10,635 restricted stock units. Each RSU represents a contingent right to receive one share of Momentus Class A common stock, vesting in three equal annual installments, subject to his continued employment through each vesting date.

How do the RSUs granted by Momentus (MNTS) vest for the CTO?

The granted RSUs vest in three equal annual installments. Vesting starts from the specified vesting commencement date and requires the executive’s continued employment with Momentus through each annual vesting date to receive the underlying shares.

What are Robert Schwarz’s Momentus (MNTS) holdings after the Form 4 grants?

After the reported grants, Robert E. Schwarz holds 6,476 shares of Momentus Class A common stock directly. He also holds 16,609 restricted stock units, each representing a contingent right to receive one additional share of Class A common stock.

Did the Momentus (MNTS) CTO buy or sell shares in the market in this Form 4?

The Form 4 reflects grant or award acquisitions only. The transactions are coded as “A” for grants, with shares and RSUs awarded at $0.00 per share, rather than open-market purchases or sales by the CTO.

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

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Accepted by SEC EDGAR 05/21/2026 - 07:30 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^*

SCHWARZ ROBERT E

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/19/2026

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	05/19/2026		A		6,457	A	$0	6,476	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)	05/19/2026		A		10,635		(2)	(2)	Class A Common Stock	10,635	$0	16,609	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. Represents a grant of RSUs, which vest in three equal annual installments from Vesting Commencement Date, subject to Executive's continued Employment through each such vesting date.

	/s/ John Rood, Attorney-in-Fact	05/21/2026
	** 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)