Stable Road Reminds Stockholders

Time is Running Out to Vote for Extension

Stable Road Acquisition Corp. (NASDAQ: SRAC, SRACU, and SRACW) (“Stable Road” or the “Company”) reminds every stockholder to vote their shares in favor of the proposal (the “Extension Amendment Proposal”) to extend the deadline by which the Company has to consummate the proposed business combination with Momentus Inc. (“Momentus”) from May 13, 2021 to August 13, 2021. It is strongly recommended that stockholders complete their proxy card before the special meeting of stockholders (the “Special Meeting”) reconvenes on May 13, 2021 at 11:00am EDT.

If the Extension Amendment Proposal is not approved, Stable Road will be unable to consummate the proposed business combination with Momentus and, in accordance with Stable Road’s charter, all public shares will be redeemed at a price of approximately $10.03 per share within ten business days after May 13, 2021.

However, even if the Extension Amendment Proposal is approved, Stable Road can provide no assurances that the proposed business combination will be consummated prior to the extended date.

Stable Road advises its stockholders that every vote is critical, and urges every stockholder who held shares of stock in Stable Road as of the close of business on March 22, 2021, the record date for the Special Meeting, to vote as soon as possible.

During the period of the adjournment, Stable Road is continuing to solicit proxies from its stockholders with respect to the Extension Amendment Proposal. Proxies previously submitted in respect of the Special Meeting will be voted at the reconvened meeting unless properly revoked. Proxies can be revoked by following the procedure for revocation described in the definitive proxy statement for the Special Meeting.

You are encouraged to submit your vote as soon as possible to ensure it is counted at the Special Meeting. Please note that if your shares are held at a brokerage firm or bank, your broker will not vote your shares for you. You must contact your bank or broker to cast your vote, and you should do so as promptly as possible as your brokerage firm or bank may require you to act more quickly prior to the reconvened meeting. If you need assistance voting your shares, please contact Stable Road’s proxy solicitor Morrow Sodali LLC at 877-787-9239 or by email to [e-mail].