Proxy Results (Form 8-K)

On September 17, 2025, Momentus Inc. (the "Company") held its 2025 Special Meeting of Stockholders (the "Special Meeting"). A quorum was present at the meeting. The final results of voting for each matter submitted to a vote of stockholders at the Special Meeting are set forth below.

Matters submitted to the stockholders and voted upon at the Special Meeting, which are more fully described in the Company's definitive proxy statement filed with the U.S. Securities and Exchange Commission (the "SEC") on August 19, 2025 and the Company's definitive proxy statement supplement filed with the SEC on September 8, 2025, were (i) to authorize the Company's Board of Directors (the "Board") to amend the Company's Second Amended and Restated Certificate of Incorporation, as amended, to effect a reverse stock split of the Company's outstanding shares of Class A common stock at a reverse stock split ratio in the range of 1-for-5 through 1-for-17.85 (the "Reverse Stock Split Proposal"); (ii) to approve, pursuant to Nasdaq listing rules, the issuance of our Class A common stock in connection with the exercise of certain outstanding warrants, and any future adjustments of the exercise price of the warrants (the "Warrant Exercise Proposal"); (iii) to approve the postponement or adjournment of the Special Meeting if necessary or appropriate, to permit further solicitation and vote of proxies if there were insufficient votes to approve any of the proposals at the time of the Special Meeting (the "Adjournment Proposal"); (iv) to approve, pursuant to Nasdaq listing rules, the issuance of Class A common stock in connection with the exercise of certain existing inducement warrants, and any future adjustments of the exercise price of the warrants (the "Inducement Warrant Proposal"); (v) to approve, pursuant to Nasdaq listing rules, the issuance of Class A common stock in connection with the exercise of certain existing convertible notes and warrants, and any future adjustments of the exercise price of the warrants (the "Convertible Notes and Warrants Proposal"); (vi) to approve, pursuant to Nasdaq listing rules, the issuance of Class A common stock in connection with the exercise of certain existing lender warrants, and any future adjustments of the exercise price of the warrants (the "Lender Warrant Proposal"); and (vii) to approve, pursuant to Nasdaq listing rules, the issuance of Class A common stock in connection with the entry into the debt settlement agreement (the "Debt Settlement Proposal").

At the Special Meeting, the Company's stockholders approved the seven proposals. The final results were as follows:

Proposal 1

Reverse Stock Split Proposal

Proposal 2

Warrant Exercise Proposal

Proposal 3

Adjournment Proposal

Proposal 4

Inducement Warrant Proposal

Proposal 5

Convertible Notes and Warrants Proposal

Proposal 6

Lender Warrant Proposal

Proposal 7

Debt Settlement Proposal