Momentus Inc.
1762 Automation Parkway
San Jose, California 95121
(650) 564-7820

June 2, 2026


VIA EDGAR

United States Securities and Exchange Commission
Division of Corporation Finance
Office of Manufacturing
100 F Street, NE
Washington, D.C. 20549

Attention: Bradley Ecker

Re:
Momentus Inc.
Registration Statement on Form S-3
File No. 333-296218

REQUEST FOR ACCELERATION OF EFFECTIVENESS

Requested Date: Thursday, June 4, 2026
Requested Time: 9:00 a.m., Eastern Time

Ladies and Gentlemen:

In accordance with Rule 461 under the Securities Act of 1933, as amended, Momentus Inc., a Delaware corporation (the “Company”), respectfully requests that the effective date for the Registration Statement referred to above be accelerated so that it will become effective at 9:00 a.m., Eastern Time, on Thursday, June 4, 2026, or as soon thereafter as is practicable.

Please contact Stephen Hinton of Bradley Arant Boult Cummings LLP, the Company’s legal counsel, at (615) 252-3585, if you have any questions or concerns regarding this matter. Thank you in advance for your assistance.

 
Sincerely,
 
 
 
MOMENTUS INC.
     
     
  By:
/s/ Lon Ensler
    Name: Lon Ensler
    Title: Chief Financial Officer



cc:          Stephen Hinton, Bradley Arant Boult Cummings LLP