April 24, 2025

John Rood
Chief Executive Officer
Momentus Inc.
3901 N. First Street
San Jose, CA 95134

       Re: Momentus Inc.
           Registration Statement on Form S-1
           Filed April 22, 2025
           File No. 333-286661
Dear John Rood:

       This is to advise you that we have not reviewed and will not review your
registration
statement.

        Please refer to Rules 460 and 461 regarding requests for acceleration.
We remind you
that the company and its management are responsible for the accuracy and
adequacy of their
disclosures, notwithstanding any review, comments, action or absence of action
by the staff.

       Please contact Kristin Baldwin at 202-551-7172 with any questions.



                                                           Sincerely,

                                                           Division of
Corporation Finance
                                                           Office of
Manufacturing