[Form 4] Momentus Inc. Insider Trading Activity

Rhea-AI Filing Summary

Amazon.com Inc. (AMZN) – Form 4 insider transaction

Douglas J. Herrington, CEO Worldwide Amazon Stores, disclosed the sale of 2,500 common shares on 01 July 2025 through a pre-arranged Rule 10b5-1 trading plan adopted on 07 Nov 2024. The three separate trades were executed at weighted-average prices of $219.17, $219.66 and $220.90, generating roughly $0.55 million in gross proceeds.

After the transactions, Herrington directly owns 514,550 shares and indirectly holds 6,592.501 shares in the Amazon 401(k) plan. The sale represents about 0.5 % of his direct ownership, indicating only a modest reduction in exposure while maintaining a sizeable equity stake that continues to align his interests with shareholders.

No derivative securities were exercised or disposed of, and there is no indication of additional insider activity in this filing.

Positive

• Executed under a Rule 10b5-1 plan, reducing the likelihood of information-based trading concerns and supporting good governance.
• Executive retains over 514k shares, maintaining substantial skin in the game and alignment with shareholders.

Negative

• Presence of insider selling by a key executive can be perceived negatively, although the amount is small relative to holdings.

Insights

Corporate Governance Analyst

TL;DR: Small 10b5-1 sale by Amazon retail CEO; signal neutral, limited impact.

The 2,500-share sale equates to roughly 0.5 % of Herrington’s direct holdings and less than 0.1 % of his total economic interest when including retirement holdings. Because the trades were executed under a pre-established 10b5-1 plan, they are less likely to reflect short-term views on Amazon’s valuation. The executive still holds more than half a million shares, suggesting continued alignment with shareholders. From a governance perspective, the disclosure meets SEC requirements and presents no red flags.

Securities Analyst

TL;DR: Insider move immaterial to AMZN valuation; monitor pattern, not price.

Gross proceeds of roughly $0.55 million are negligible against Amazon’s market capitalization and daily trading volume. The filing does not alter core investment drivers—cloud growth, retail margins, or AI initiatives. Investors should watch for any escalation in insider selling, but one modest 10b5-1 trade is statistically insignificant for share-price modeling. I view the event as neutral for the stock’s risk-reward profile.

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^*

Reed Kimberly A.

(Last) (First) (Middle)

C/O MOMENTUS INC.

3901 N. FIRST STREET

(Street)

SAN JOSE CA 95134

(City) (State) (Zip)

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)

3. Date of Earliest Transaction (Month/Day/Year)
06/30/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

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	06/30/2025		A		16,294	A	$0	21,441	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)	06/30/2025		A		16,294		(2)	(2)	Class A Common Stock	16,294	$0	16,294	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.

Remarks:

	/s/ John Rood, Attorney-in-Fact	07/03/2025
	** 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.

FAQ

How many Amazon (AMZN) shares did Douglas J. Herrington sell?

He sold 2,500 common shares on 01 July 2025.

At what prices were the AMZN shares sold?

Weighted-average prices were $219.17, $219.66 and $220.90 across three trades.

Does Herrington still hold Amazon stock after the sale?

Yes, he directly holds 514,550 shares and indirectly 6,592.501 shares in the 401(k) plan.

Was the transaction made under a Rule 10b5-1 plan?

Yes, the filing states the sales were executed under a 10b5-1 plan adopted on 07 Nov 2024.

Is this insider sale considered material to Amazon's valuation?

Given its small size (≈0.5 % of his direct holdings) and Amazon’s large market cap, analysts view the impact as immaterial.