# EDGAR Filing Document

**Accession Number:** 0001781162
**File Stem:** 0001140361-25-043134
**Filing Date:** 2025-11
**Character Count:** 5226
**Document Hash:** 9136b46a87cd37541cbdfb6d66a2bb38
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001140361-25-043134.hdr.sgml**: 20251124

**ACCESSION NUMBER**: 0001140361-25-043134

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 13

**CONFORMED PERIOD OF REPORT**: 20251124

**ITEM INFORMATION**: Other Events

**FILED AS OF DATE**: 20251124

**DATE AS OF CHANGE**: 20251124

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Momentus Inc.
- **CENTRAL INDEX KEY:** 0001781162
- **STANDARD INDUSTRIAL CLASSIFICATION:** GUIDED MISSILES & SPACE VEHICLES & PARTS [3760]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 841905538
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-39128
- **FILM NUMBER:** 251512956

**BUSINESS ADDRESS:**
- **STREET 1:** 3901 N. FIRST STREET
- **CITY:** SAN JOSE
- **STATE:** CA
- **ZIP:** 95134
- **BUSINESS PHONE:** 6505647820

**MAIL ADDRESS:**
- **STREET 1:** 3901 N. FIRST STREET
- **CITY:** SAN JOSE
- **STATE:** CA
- **ZIP:** 95134

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Stable Road Acquisition Corp.
- **DATE OF NAME CHANGE:** 20190628

?xml version='1.0' encoding='ASCII'?

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### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

### Washington, D.C. 20549

### FORM 8-K

#### CURRENT REPORT

#### Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934
November 24, 2025

Date of Report (date of earliest event reported)

### Momentus Inc.

#### (Exact name of registrant as specified in its charter)

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| | | |
|:---|:---|:---|
| **Delaware**<br>| **001-39128** | **84-1905538**<br>|
| (State or other jurisdiction of incorporation or organization) | (Commission File Number) | (I.R.S. Employer Identification No.) |
| **3901 N. First Street**<br>**San Jose, California** |  | **95134**<br>|
| (Address of Principal Executive Offices) |  | (Zip Code) |

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(650) 564-7820

Registrant's telephone number, including area code

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(g) of the Act:

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| | | |
|:---|:---|:---|
| Title of each class | Trading Symbol(s) | Name of each exchange on which registered |
| Class A common stock<br>| MNTS<br>| The Nasdaq Stock Market LLC<br>|
| Warrants<br>| MNTSW<br>| The Nasdaq Stock Market LLC<br>|

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Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

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#### Item 8.01 Other Events.
On November 24, 2025, Momentus Inc. (the "Company") called to order its 2025 Special Meeting of Stockholders (the "Special Meeting"). At the Special Meeting, there were not present or represented by proxy a sufficient number of shares of the Company's common stock in order to constitute quorum. The Company adjourned the Special Meeting until December 15, 2025 at 9:00 a.m. Pacific Time (the "Reconvened Special Meeting").

The Reconvened Special Meeting will be held at the same virtual meeting location, www.virtualshareholdermeeting.com/MNTS2025SM2. This will enable the Company's stockholders of record as of the record date, which was October 28, 2025, additional time to consider and vote on the proposals, and enable the Company's proxy solicitor, Laurel Hill Advisory Group, LLC, more time to assist the Company with the solicitation of stockholder votes on the proposals.

At the Reconvened Special Meeting, stockholders will be deemed to be present in person and vote at such adjourned meeting in the same manner as disclosed in the Company's definitive proxy statement filed with the U.S. Securities and Exchange Commission on October 29, 2025. Valid proxies submitted prior to the Special Meeting will continue to be valid for the Reconvened Special Meeting, unless properly changed or revoked prior to votes being taken at the Reconvened Special Meeting.

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#### SIGNATURE
**Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.**

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| | | | |
|:---|:---|:---|:---|
|  |  | By: | /s/ Lon Ensler |
|  |  | Name: | Lon Ensler |
|  |  | Title: | Chief Financial Officer |
| Dated: | November 24, 2025 |  |  |

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