Momentus INC. 8-K Filing

Ticker: MNTSW · Form: 8-K · Filed: Dec 10, 2025 · CIK: 1781162

Sentiment: neutral

Filing Stats: 883 words · 4 min read · ~3 pages · Grade level 11.9 · Accepted 2025-12-10 08:34:58

Key Financial Figures

Filing Documents

01

Item 1.01 Entry into a Material Definitive Agreement Effective December 5, 2025, Momentus Inc. ("Momentus" or the "Company") entered into a Note Amendment Agreement (the "Amendment") with Space Infrastructures Ventures, LLC ("SIV") to, among other things, amend the outstanding amended and restated secured convertible promissory note dated September 8, 2025 (as amended, the "Convertible Note"). The amendment, among other things, deferred the first payment tranche of $1.0 million from December 1, 2025 to a new maturity date of May 1, 2026. In connection with the amendment to the Convertible Note, the Company issued SIV warrants to purchase up to 240,000 shares of Common Stock at an exercise price of $0.79 per share. The amendment delays the date on or after which the Company may incur up to $4 million of indebtedness pari passu with the Convertible Note from December 1, 2025 to March 1, 2026, subject to payment of all principal and interest owed under the Convertible Note as of March 1, 2026, and the issuance of warrants as previously provided in the Convertible Note. The Company also agreed to register the warrants issued pursuant to the Amendment. The Convertible Note and the warrants issued to SIV cannot be converted or exercised if it would cause the aggregate number of shares of Class A common stock beneficially owned by SIV (together with its affiliates) to exceed 4.99% of the number of shares of Class A common stock outstanding immediately after giving effect to the conversion or exercise, as applicable. By written notice, SIV may, with the agreement of the Company, from time to time increase or decrease this ownership limitation to any other percentage. Conversion of the Convertible Note and exercise of the warrants by SIV is also subject to compliance with applicable Nasdaq rules. Except as amended, the remaining terms of the Convertible Note remain in full force and effect. The foregoing description of the amendment to the October 2024 Convertible

03

Item 2.03 Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant The disclosure contained in Item 1.01 of this Current Report is incorporated by reference in this Item 2.03.

02

Item 3.02 Unregistered Sales of Equity Securities The information contained above in Item 1.01 of this Current Report on Form 8-K related to the warrants issued to SIV (the "Securities") is hereby incorporated by reference into this Item 3.02. The Securities were sold without registration under the Securities Act of 1933, as amended (the "Securities Act"), in reliance on the exemptions provided by Section 4(a)(2) of the Securities Act as a transaction not involving a public offering and Rule 506(c) of Regulation D promulgated under the Securities Act as sales to accredited investors and in reliance on similar exemptions under applicable state laws. Exhibit Number Exhibit Description 10.1 Note Amendment Agreement, dated as of December 5, 2025, by and between Space Infrastructures Ventures, LLC and Momentus Inc. 10.3 Cover Page Interactive Data File (embedded within the Inline XBRL document) 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. By: /s/ Lon Ensler Name: Lon Ensler Dated: December 9, 2025 Title: Chief Financial Officer

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