Momentus SPAC Presentation Deck

DISCLAIMER AND CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS This presentation (together with oral statements made in connection herewith, this "Presentation") contains selected confidential information about Momentus Inc. ("Momentus") and Stable Road Acquisition Corp. ("Stable Road" or "SRAC"). By participating in this Presentation, you expressly agree to keep confidential all otherwise non-public information disclosed by us, whether orally or in writing, during this Presentation or in these Presentation materials. You also agree not to distribute, disclose or use such information for any purpose, other than for the purpose of your firm's participation in the potential financing and to return to Momentus and Stable Road, delete or destroy this Presentation upon request. You are also being advised that the United States securities laws restrict persons with material non-public information about a company obtained directly or indirectly from that company from purchasing or selling securities of such company, or from communicating such information to any other person under circumstances in which it is reasonably foreseeable that such person is likely to purchase or sell such securities on the basis of such information. This Presentation relates to the potential financing of a portion of the contemplated transaction through a private placement of Stable Road's Class A common stock. This Presentation shall not constitute a "solicitation" as defined in Section 14 of the Securities Exchange Act of 1934, as amended. This Presentation is not an offer, or a solicitation of an offer, to buy or sell any investment or other specific product. Any offering of securities (the "Securities") will not be registered under the Securities Act of 1933, as amended (the "Act"), and will be offered as a private placement to a limited number of institutional "accredited investors" as defined in Rule 501(a) (1), (2), (3) or (7) under the Act and "Institutional Accounts" as defined in FINRA Rule 4512(c). Accordingly, the Securities must continue to be held unless a subsequent disposition is exempt from the registration requirements of the Act. Investors should consult with their legal counsel as to the applicable requirements for a purchaser to avail itself of any exemption under the Act. The transfer of the Securities may also be subject to conditions set forth in an agreement under which they are to be issued. Investors should be aware that they might be required to bear the final risk of their investment for an indefinite period of time. Neither Momentus nor Stable Road is making an offer of the Securities in any state where the offer is not permitted. NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES COMMISSION HAS APPROVED OR DISAPPROVED OF THE SECURITIES OR DETERMINED IF THIS PRESENTATION IS TRUTHFUL OR COMPLETE. Information contained in this Presentation concerning Momentus' industry and the markets in which it operates, including Momentus' general expectations and market position, market opportunity and market size, is based on information from Momentus management's estimates and research, as well as from industry and general publications and research, surveys and studies conducted by third parties. In some cases, we may not expressly refer to the sources from which this information is derived. Management estimates are derived from industry and general publications and research, surveys and studies conducted by third parties and Momentus' knowledge of its industry and assumptions based on such information and knowledge, which we believe to be reasonable. In addition, assumptions and estimates of Momentus' and its industry's future performance are necessarily subject to a high degree of uncertainty and risk due to a variety of factors. These and other factors could cause Momentus' future performance and actual market growth, opportunity and size and the like to differ materially from our assumptions and estimates. Stable Road and Momentus own or have rights to various trademarks, service marks and trade names that they use in connection with the operation of their respective businesses. This Presentation also contains trademarks, service marks and trade names of third parties, which are the property of their respective owners. The use or display of third parties' trademarks, service marks, trade names or products in this Presentation is not intended to, and does not imply, a relationship with Stable Road or Momentus, or an endorsement or sponsorship by or of Stable Road or Momentus. Solely for convenience, the trademarks, service marks and trade names referred to in this Presentation may appear without the , TM or SM symbols, but such references are not intended to indicate, in any way, that Stable Road or Momentus will not assert, to the fullest extent under applicable law, their rights or the right of the applicable licensor to these trademarks, service marks and trade names. Copyright 2020. Momentus Inc. Proprietary & Confidential. Not Export Controlled. Any use, reproduction, or distribution without the express consent of Momentus is strictly prohibited. If you are not the intended recipient, please immediately delete this document and any associated communications. 2

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