# EDGAR Filing Document

**Accession Number:** 0001781162
**File Stem:** 0001140361-25-031318
**Filing Date:** 2025-8
**Character Count:** 5314
**Document Hash:** 3da91661bf28e713889b6ec4ac43887b
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001140361-25-031318.hdr.sgml**: 20250814

**ACCESSION NUMBER**: 0001140361-25-031318

**CONFORMED SUBMISSION TYPE**: NT 10-Q

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20250630

**FILED AS OF DATE**: 20250814

**DATE AS OF CHANGE**: 20250814

**EFFECTIVENESS DATE**: 20250814

**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:** NT 10-Q
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-39128
- **FILM NUMBER:** 251221126

**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

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### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### Washington, D.C. 20549
SEC FILE NUMBER

001-39128

### FORM 12b-25
CUSIP NUMBER

60879E309

#### NOTIFICATION OF LATE FILING

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| | |
|:---|:---|
| *(Check one):* | ☐ Form 10-K ☐ Form 20-F ☐ Form 11-K ☒ Form 10-Q<br> ☐ Form 10-D ☐ Form N-SAR ☐ Form N-CSR |
|  | For Period Ended: June 30, 2025 |
|  | ☐ Transition Report on Form 10-K |
|  | ☐ Transition Report on Form 20-F |
|  | ☐ Transition Report on Form 11-K |
|  | ☐ Transition Report on Form 10-Q |
|  | ☐ Transition Report on Form N-SAR |
|  | For the Transition Period Ended: |

---

**Nothing in this form shall be construed to imply that the Commission has verified any information contained herein.**<br>

If the notification relates to a portion of the filing checked above, identify the Item(s) to which the notification relates:

#### PART I – REGISTRANT INFORMATION

## MOMENTUS INC.

#### Full Name of Registrant

#### Former Name if Applicable

#### 3901 N. First Street
Address of Principal Executive Office *(Street and Number)*

#### San Jose, California 95134
City, State and Zip Code

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#### PART II – RULES 12b-25(b) AND (c)

If the subject report could not be filed without unreasonable effort or expense and the registrant seeks relief pursuant to Rule 12b-25(b), the following should be completed. (Check box if appropriate)

(a) The reason described in reasonable detail in Part III of this form could not be eliminated without unreasonable effort or expense

☒ (b) The subject annual report, semi-annual report, transition report on Form 10-K, Form 20-F, Form 11-K, Form N-SAR or Form N-CSR, or
 portion thereof, will be filed on or before the fifteenth calendar day following the prescribed due date; or the subject quarterly report or transition report on Form 10-Q or subject distribution report on Form 10-D, or portion thereof,
 will be filed on or before the fifth calendar day following the prescribed due date; and

(c) The accountant's statement or other exhibit required by Rule 12b-25(c) has been attached if applicable.

#### PART III – NARRATIVE
Momentus Inc. (the "Company") is unable to file its Quarterly Report on Form 10-Q for the quarter ended June 30, 2025 (the "Form 10-Q") within the prescribed time period without unreasonable effort and expense because the Company requires additional time to finalize the accounting treatment of shares of Class A common stock and convertible preferred stock issued in connection with the previously reported Master Services Agreement that the Company entered into on April 12, 2025. The Company is working diligently to complete the Form 10-Q as soon as possible.

#### PART IV – OTHER INFORMATION

&nbsp;&nbsp;&nbsp;&nbsp;(1) Name and telephone number of person to contact in regard to this notification:

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| | | |
|:---|:---|:---|
| **Lon Ensler** | **650** | **564-7820** |
| (Name) | (Area Code) | (Telephone Number) |

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&nbsp;&nbsp;&nbsp;&nbsp;(2) Have all other periodic reports required under Section 13 or 15(d) of the Securities Exchange Act of 1934 or Section 30 of the Investment Company Act of 1940 during the preceding 12 months or for such shorter period that the registrant
 was required to file such report(s) been filed? If answer is no, identify report(s).

☒ Yes ☐ No

&nbsp;&nbsp;&nbsp;&nbsp;(3) Is it anticipated that any significant change in results of operations from the corresponding period for the last fiscal year will be reflected by the earnings statements to be included in the subject report or portion thereof?

☐ Yes ☒ No

If so, attach an explanation of the anticipated change, both narratively and quantitatively, and, if appropriate, state the reasons why a reasonable estimate of the results cannot be made.

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#### MOMENTUS INC.

#### (Name of Registrant as Specified in Charter)

has caused this notification to be signed on its behalf by the undersigned hereunto duly authorized.

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| | | |
|:---|:---|:---|
| Date: August 14, 2025 | Momentus Inc. | Momentus Inc. |
|  | By: | /s/ Lon Ensler |
|  |  | Lon Ensler |
|  |  | Chief Financial Officer |

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