Momentus Inc.

3901 N. First Street

San Jose, California 95124

(650) 564-7820

June 26, 2025

VIA EDGAR

United States Securities and Exchange Commission

Division of Corporation Finance

Office of Manufacturing

100 F Street, NE

Washington, D.C. 20549

Attention: Kristin Baldwin

Re:	Momentus Inc.
	Registration Statement on Form S-1
	File No. 333-288123
	REQUEST FOR ACCELERATION OF EFFECTIVENESS
	Requested Date: Monday, June 30, 2025
	Requested Time: 10:00 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 10:00 a.m., Eastern Time, on Monday, June 30, 2025, or as soon thereafter as is practicable.

Please contact Stephen Hinton of Bradley Arant Boult Cummings LLP, the Company’s legal counsel, at (615) 244-2582, 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: Interim Chief Financial Officer

cc: Stephen Hinton, Bradley Arant Boult Cummings LLP