Momentus Inc. (MNTS) director Brian Kabot buys 250-share stake

Rhea-AI Filing Summary

Momentus Inc. director Brian Kabot reported an open-market purchase of Class A Common Stock. On May 20, 2026, he bought 250 shares at $5.515 per share, increasing his direct holdings to 4,708 shares of Momentus Class A Common Stock.

Insider Trade Summary

Net Buyer: 250 shares ($1,379)

Net Buy 1 txn

Insider Kabot Brian

Role null

Bought 250 shs ($1K)

Type	Security	Shares	Price	Value
Purchase	Class A Common Stock	250	$5.515	$1K

Holdings After Transaction: Class A Common Stock — 4,708 shares (Direct, null)

Footnotes (1)

Key Figures

Shares purchased: 250 shares Purchase price: $5.515 per share Shares held after transaction: 4,708 shares

3 metrics

Shares purchased 250 shares Open-market purchase on May 20, 2026

Purchase price $5.515 per share Price for Class A Common Stock

Shares held after transaction 4,708 shares Director’s direct holdings following purchase

Key Terms

open-market purchase, Class A Common Stock, transaction code

3 terms

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.

Class A Common Stock financial

""security_title": "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.

transaction code financial

""transaction_code": "P""

Form 4 Insider Transactions: What Each Field Means →

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^*

Kabot Brian

(Last) (First) (Middle)

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)
05/20/2026

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	05/20/2026		P		250	A	$5.515	4,708	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

Explanation of Responses:

	/s/ Brian Kabot	05/22/2026
	** 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)

FAQ

What insider transaction did Momentus (MNTS) report for Brian Kabot?

Momentus reported that director Brian Kabot bought 250 Class A shares. On May 20, 2026, he executed an open-market purchase at $5.515 per share, raising his direct ownership to 4,708 Momentus Class A Common Stock shares.

How many Momentus (MNTS) shares does Brian Kabot now hold after this Form 4?

After the reported transaction, Brian Kabot holds 4,708 shares. The Form 4 shows his direct ownership of Momentus Class A Common Stock increased when he purchased 250 shares in an open-market trade at a price of $5.515 per share.

What price did Brian Kabot pay for his recent MNTS share purchase?

Brian Kabot paid $5.515 per share for his recent MNTS purchase. The Form 4 describes an open-market purchase of 250 shares of Momentus Class A Common Stock at this price on May 20, 2026, increasing his total direct holdings.

Was the Momentus (MNTS) Form 4 transaction a buy or sell?

The Momentus Form 4 transaction was an open-market buy. Director Brian Kabot executed a purchase coded as transaction type “P,” acquiring 250 shares of Class A Common Stock and bringing his directly held position to 4,708 shares.

How many shares did Brian Kabot buy in the latest Momentus (MNTS) Form 4?

Brian Kabot bought 250 shares in the latest Form 4 filing. The transaction involved Class A Common Stock purchased in the open market at $5.515 per share, and it raised his direct ownership stake in Momentus to 4,708 shares.