Momentus Inc. (MNTS) grants stock and RSU awards to Chief Legal Officer

Filing Impact

(Neutral)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

Layman Jon reported acquisition or exercise transactions in this Form 4 filing.

Momentus Inc. reported that Chief Legal Officer Jon Layman received equity-based compensation on May 19, 2026. He was granted 6,457 shares of Class A Common Stock and 10,635 Restricted Stock Units (RSUs) at no cost. Each RSU represents a contingent right to receive one share of Class A Common Stock and will vest in three equal annual installments from the Vesting Commencement Date, subject to his continued employment.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Layman Jon

Role Chief Legal Officer

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

Holdings After Transaction: Restricted Stock Units — 16,609 shares (Direct, null); Class A Common Stock — 6,476 shares (Direct, null)

Footnotes (1)

Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of Momentus Inc. Class A Common Stock. 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 Common shares held after: 6,476 shares RSU grant: 10,635 RSUs +3 more

6 metrics

Common stock grant 6,457 shares Class A Common Stock awarded on May 19, 2026

Common shares held after 6,476 shares Direct Class A Common Stock holding after grant

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

RSUs held after 16,609 RSUs Total Restricted Stock Units following the transaction

RSU-to-share ratio 1 RSU : 1 share Each RSU represents a contingent right to one Class A share

Grant price $0.00 per unit Price per share and per RSU on grant date

Key Terms

Restricted Stock Units, contingent right, vesting, Vesting Commencement Date

4 terms

Restricted Stock Units financial

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

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"

vesting financial

"RSUs, which vest in three equal annual installments from Vesting Commencement Date"

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

Vesting Commencement Date financial

"vest in three equal annual installments from Vesting Commencement Date, subject to Executive's continued Employment"

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.

Form 4 Insider Transactions: What Each Field Means →

05/21/2026 - 06:55 PM

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^*

Layman Jon

(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 Legal 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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
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)

Source: View Original Filing on SEC EDGAR

FAQ

What equity awards did Momentus (MNTS) grant to its Chief Legal Officer?

Momentus granted Chief Legal Officer Jon Layman 6,457 shares of Class A Common Stock and 10,635 Restricted Stock Units. Both awards were granted at no cost as part of his compensation package.

How many Momentus (MNTS) shares does Jon Layman hold after this Form 4?

After the grant, Jon Layman holds 6,476 shares of Class A Common Stock directly. He also holds 16,609 Restricted Stock Units representing potential future shares, subject to vesting conditions tied to continued employment.

How do the Restricted Stock Units for Momentus (MNTS) vest for the CLO?

The 10,635 Restricted Stock Units vest in three equal annual installments starting from the Vesting Commencement Date. Each installment requires Jon Layman’s continued employment with Momentus through the applicable vesting date to receive the corresponding shares.

What does each Restricted Stock Unit represent for Momentus (MNTS) insiders?

Each Restricted Stock Unit represents a contingent right to receive one share of Momentus Class A Common Stock. The units convert into actual shares only upon satisfying vesting conditions, including continued employment through each scheduled vesting date.

Was Jon Layman buying Momentus (MNTS) stock on the open market?

No. The Form 4 shows a compensation-related grant coded as an acquisition (A), not an open-market purchase. The Class A Common Stock and Restricted Stock Units were awarded at a price of $0.00 per share under company equity plans.