Momentus Inc.

Our Board has determined that it is in the best interests of Momentus and its stockholders to combine our shares of common stock within a range of 1-for-5 through 1-for-17.85, as determined by the Board at a later date, in order to raise the per share trading price of our Class A common stock. Our Class A common stock is publicly traded and listed on the Nasdaq Capital Market (“Nasdaq”) under the symbol “MNTS.”

To continue our listing on Nasdaq, we must comply with Nasdaq Marketplace Rules, which requirements include maintaining a minimum bid price of at least $1.00 per share (the “Minimum Bid Price Requirement”). Failure to meet the Minimum Bid Price Requirement is determined to exist only if the deficiency continues for a period of 30 consecutive business days. On March 27, 2024, we received a letter from Nasdaq notifying us that, for the last 30 consecutive business days, the bid price of our Class A common stock had closed below $1.00 per share. On December 9, 2024, we filed a Certificate of Amendment to our Certificate of Incorporation with the Secretary of State of the State of Delaware to effect a 1-for-14 reverse stock split of our outstanding Class A common stock (the “December 2024 Reverse Stock Split”). The December 2024

Reverse Stock Split became effective on December 12, 2024 at 5:00 p.m. Eastern Time, and our Class A common stock began trading on The Nasdaq Capital Market, on a split-adjusted basis, at market open on December 13, 2024. On December 27, 2024, the Company’s Class A common stock closed above the minimum bid price for ten consecutive trading days as required to regain compliance with the Minimum Bid Price Requirement.

Pursuant to Nasdaq Listing Rule 5810(c)(3)(A)(iv), a Nasdaq-listed company is not eligible for any cure period as specified in Nasdaq Listing Rule 5810(c)(3)(A) to regain compliance with the Minimum Bid Price Requirement if it has effected a reverse stock split over the prior one-year period. We previously effectuated a 1-for-14 reverse stock split on December 12, 2024. Therefore, if we fail to meet the Minimum Bid Price Requirement within the one-year period ending on December 12, 2025, we would be subject to delisting by Nasdaq without any opportunity for a cure period.

Nasdaq Listing Rule 5810(c)(3)(A)(iv) also provides that a Nasdaq-listed company is not eligible for any cure period as specified in Nasdaq Listing Rule 5810(c)(3)(A) to regain compliance with the Minimum Bid Price Requirement if it has effected one or more reverse stock splits over the prior two-year period with a cumulative ratio of 250 shares or more to one. In addition to the 1-for-14 reverse stock split on December 12, 2024, we also effectuated a 1-for-50 reverse stock split on August 23, 2023. These reverse stock splits have a cumulative reverse stock split ratio of more than 250 shares or more to one. Therefore, if we fail to meet the Minimum Bid Price Requirement within the two-year period ending on August 23, 2025, we also would be subject to delisting by Nasdaq without any opportunity for a cure period.

Additionally, the Company believes that an increased stock price may encourage investor interest and improve the marketability of our Class A common stock to a broader range of investors. Because of the trading volatility often associated with low-priced stocks, many brokerage firms and institutional investors have internal policies and practices that either prohibit them from investing in low-priced stocks or tend to discourage individual brokers from recommending low-priced stocks to their customers. The closing sale price of our Class A common stock on July 22, 2025, was $1.25 per share. The Company believes that the anticipated higher market price resulting from a reverse stock split would enable institutional investors and brokerage firms with policies and practices such as those described above to invest in our Class A common stock.

We believe that maintaining our listing on Nasdaq will provide us with a market for the Class A common stock that is more accessible than if our Class A common stock were traded on the OTC Bulletin Board or in the “pink sheets” maintained by the OTC Markets Group, Inc. Such alternative markets are generally considered to be less efficient than, and not as broad as, Nasdaq. Among other factors, trading on Nasdaq increases liquidity and may potentially minimize the spread between the “bid” and “asked” prices quoted by Market Makers (as defined in Nasdaq Rule 5005). We believe that prospective investors will view an investment in us more favorably if our Class A common stock qualifies for listing on Nasdaq as compared with the OTC markets.

Reducing the number of outstanding shares of our common stock through the Reverse Stock Split is intended, absent other factors, to increase the per share trading price of our Class A common stock. However, other factors, such as our financial results, market conditions and the market perception of our business may adversely affect the per share trading price of our Class A common stock. As a result, there can be no assurance that the Reverse Stock Split, if completed, will result in the intended benefits described above, that the per share trading price of our Class A common stock will increase following the Reverse Stock Split or that the per share trading price of our Class A common stock will not decrease in the future.

The purpose of seeking stockholder approval of exchange ratios within the Ratio Range (rather than a fixed exchange ratio) is to provide the Company and the Board with the flexibility to achieve the desired results of the Reverse Stock Split. If our stockholders approve this proposal, then the Board, in its sole discretion, would effect the Reverse Stock Split only upon the determination by the Board that a reverse split would be in the best interests of the Company and our stockholders at that time. See “—Criteria to Be Used for Determining Whether to Implement the Reverse Stock Split.” If the Board were to effect the Reverse Stock Split, then the Board would set the timing for such a split and select the specific ratio within the Ratio Range (the “Final Ratio”). No further action on the part of stockholders would be required for the Board to either implement or abandon the Reverse Stock Split. If our stockholders approve the proposal, and the Board determines to effect the Reverse Stock Split, we would communicate to the public, prior to the Effective Time (as defined below), additional details regarding the Reverse Stock Split, including the Final Ratio selected by the Board. If the Board does not implement the Reverse Stock Split within 12 months from the Special Meeting, then the authority granted in this proposal to implement the Reverse Stock Split will automatically terminate. If the Board elects not to implement the Reverse Stock Split within this time, stockholder approval would again be required prior to implementing any subsequent reverse stock split. The Board reserves its right, notwithstanding stockholder approval and without further action by the stockholders, to elect not to proceed with the Reverse Stock Split at any time prior to the filing of the Certificate of Amendment to the Second Amended and Restated Certificate of Incorporation, as amended, with the Secretary of State of the State of Delaware.

Criteria to Be Used for Determining Whether to Implement the Reverse Stock Split:

In determining whether to implement the Reverse Stock Split and which reverse stock split ratio to implement, if any, following receipt of stockholder approval authorizing the Board to amend our Second Amended and Restated Certificate of Incorporation, as amended, to effect the Reverse Stock Split, our Board may consider, among other things, various factors, such as: