Momentus director granted 6,039 RSUs, adds 913 shares

Momentus Inc. director Victorino Mercado reported equity-based compensation activity.

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Form Type

Rhea-AI Filing Summary

Momentus Inc. director Victorino Mercado reported equity-based compensation activity. He exercised a derivative security into 913 shares of Class A Common Stock, bringing his direct common stock holdings to 2,077 shares. He was also granted 6,039 Restricted Stock Units, each representing a contingent right to one share of Class A Common Stock.

The 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 date. These transactions reflect routine director compensation and equity alignment rather than open-market buying or selling.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Mercado Victorino

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 — 2,077 shares (Direct)

Footnotes (2)

F1. Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of Momentus Inc. Class A Common Stock.
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 exercise: 913 shares Shares held after exercise: 2,077 shares RSUs granted: 6,039 RSUs +2 more

5 metrics

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

Shares held after exercise 2,077 shares Direct Class A Common Stock holdings following the transaction

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

Underlying shares for RSUs 6,039 shares Each RSU represents one share of Class A Common Stock

RSU vesting date May 18, 2027 Vests on May 18, 2027 or 2027 Annual Meeting, whichever occurs first

Key Terms

Restricted Stock Unit, Class A Common Stock, Annual Meeting, Board of Directors

4 terms

Restricted Stock Unit financial

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

A restricted stock unit is a promise from a company to give an employee shares of stock after certain conditions are met, like staying with the company for a set amount of time. It’s like earning a bonus that turns into company stock once you’ve proven your commitment, making it a way to motivate and reward employees.

Class A Common Stock financial

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

Annual Meeting financial

"on the earlier to occur of May 18, 2027 or the day of the 2027 Annual Meeting"

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.

Board of Directors financial

"subject to the Reporting Person's continued service as a member of the Board of Directors"

The Board of Directors is a group of people chosen by a company's owners to help make big decisions and oversee how the company is run. They act like a team of advisors or managers, making sure the company stays on track and meets its goals. Their choices can influence the company's success and how it grows.

FAQ

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

What insider transactions did Momentus (MNTS) director Victorino Mercado report?

Victorino Mercado reported exercising a derivative security into 913 shares of Class A Common Stock and receiving 6,039 Restricted Stock Units. These equity awards are part of his director compensation rather than open-market share purchases or sales.

How many Momentus (MNTS) shares does Victorino Mercado hold after this Form 4?

After the reported exercise, Victorino Mercado directly holds 2,077 shares of Momentus Class A Common Stock. In addition, he has 6,039 Restricted Stock Units that each represent a contingent right to receive one share upon future vesting.

What are the terms of the 6,039 Restricted Stock Units granted to Victorino Mercado at Momentus (MNTS)?

The 6,039 Restricted Stock Units each represent a contingent right to receive one share of Momentus Class A Common Stock. They will vest in full on May 18, 2027 or the 2027 Annual Meeting date, whichever occurs first, if he remains on the Board.

Is Victorino Mercado’s Form 4 for Momentus (MNTS) an open-market buy or sell?

The Form 4 does not show any open-market buys or sells. It reports a derivative exercise converting into 913 shares and a grant of 6,039 Restricted Stock Units, both classified as acquisition-type compensation-related equity transactions.

When will Victorino Mercado’s new Momentus (MNTS) RSUs vest?

The RSUs will vest in full on the earlier of May 18, 2027 or the date of the 2027 Annual Meeting. Vesting is conditioned on Victorino Mercado continuing to serve as a member of the Board of Directors through that vesting date.

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 - 08:21 PM EDT

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^*

Mercado Victorino

(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)
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	05/18/2026		M		913	A	$0	2,077	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⁾	05/18/2026		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)

Source: View Original Filing on SEC EDGAR