Nature of Operations	3 Months Ended
Mar. 31, 2026
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Operations	Note 1. Nature of Operations The Company Momentus Inc. (together with its consolidated subsidiaries “Momentus” or the “Company”) is a U.S. commercial space company that offers satellites, satellite buses, satellite technologies and components, and space infrastructure services, including in-space transportation, hosted payloads and in-orbit services. Momentus has launched five missions to date, deployed 17 customer satellites, and provided hosted payload services. Four of these missions involved operation of the Vigoride Orbital Service Vehicle (“OSV”) in orbit. During these four Vigoride missions, the system and technology were tested repeatedly. Improvements based on lessons learned during these missions were rapidly incorporated. As a result of these four missions, the Vigoride OSV has been successfully demonstrated in space and accumulated significant flight heritage. The Company launched its latest OSV, Vigoride 7, on March 30, 2026 to low Earth orbit (“LEO”) with 10 payloads During this mission, which is expected to last several months, the Company is scheduled to provide hosted payload services to a range of U.S. Government customers with payloads aboard, including the Defense Advanced Research Projects Agency (“DARPA”), SpaceWERX, which is the innovation organization of the U.S. Space Force, the U.S. Air Force Research Laboratory, the National Aeronautics and Space Administration (“NASA”), as well as commercial customers. In addition to the Vigoride OSV, Momentus is also offering its M-1000 satellite bus which has substantial commonality with Vigoride. With a growing demand for satellite bus services, Momentus is positioned to advance its hardware and flight-proven technology for this market. The M-1000 bus is a flexible option to meet various mission requirements. Innovations to improve sensor capability, maneuverability, increased power, and lower costs are integrated into the product. Momentus believes it can manufacture satellite buses like the M-1000 at a rapid and scalable pace. Capital Resources and Recent Financing Transactions During the three months ended March 31, 2026, the Company received Net cash provided by financing activities of approximately $16.7 million primarily from sales of Class A common stock. Since March 31, 2026, the Company also completed a private placement of securities for gross proceeds of $5.0 million and certain convertible notes were fully converted into shares of Class A common stock. See Notes 9 and 16 for additional details. These proceeds, combined with service revenue received during the quarter ended March 31, 2026, have improved the liquidity and financial position of the Company over December 31, 2025. The Company also raised approximately $10.5 million from sales of Class A common stock in May 2026. In prior periods, the Company disclosed that conditions and events raised substantial doubt regarding its ability to continue as a going concern. Management believes that, as a result of the financings and related transactions completed since December 31, 2025, substantial doubt no longer exists. Based on the Company’s current cash position, expected operating plan and forecasted liquidity needs, management has concluded that the Company has sufficient resources to fund operations and meet its obligations for at least the twelve-month period following the issuance date of these condensed consolidated interim financial statements. The accompanying condensed consolidated interim financial statements have been prepared assuming that the Company will continue as a going concern. The going concern basis of presentation assumes that the Company will continue in operation one year after the date these condensed consolidated interim financial statements are issued and will be able to realize its assets and discharge its liabilities and commitments in the normal course of business. The Company’s forecasts and operating plans are subject to risks and uncertainties as discussed above under Cautionary Note Regarding Forward-Looking Statements, and actual results could differ from management’s expectations. Reverse Stock Splits Effective December 17, 2025, the Company’s stockholders approved a 1-for-17.85 reverse stock split of the Company’s Class A common stock. As a result of the reverse stock split, every 17.85 shares of Class A common stock issued and outstanding on December 17, 2025, were automatically combined into one share of Class A common stock. Any fractional shares resulting from the reverse stock split were rounded up to the next nearest whole share of Class A common stock. The reverse stock split did not affect the stated par value of the Class A common stock nor did it change the total number of the Company’s authorized shares of Class A common stock. Both the Company’s Class B common stock and Series A preferred stock were not affected by the reverse stock split. Also on the effective date of each reverse stock split, all options, warrants, and other convertible securities of the Company outstanding immediately prior to the reverse stock split were adjusted by dividing the number of shares of Class A common stock into which the options, warrants, and other convertible securities are exercisable or convertible by the factor applied in the reverse stock split, and multiplying the exercise or conversion price thereof by the same amount, all in accordance with the terms of the plans, agreements, or arrangements governing such options, warrants, and other convertible securities and subject to rounding to the nearest whole share. Such proportional adjustments were also made to the number of shares and restricted stock units (“RSUs”) issued and issuable under the Company’s equity compensation plans. The Company has retroactively adjusted all periods presented for the effects of the December 2025 1-for-17.85 reverse stock split. See Note 9 for additional information.

Momentus Inc. (together with its consolidated subsidiaries “Momentus” or the “Company”) is a U.S. commercial space company that offers satellites, satellite buses, satellite technologies and components, and space infrastructure services, including in-space transportation, hosted payloads and in-orbit services.

Momentus has launched five missions to date, deployed 17 customer satellites, and provided hosted payload services. Four of these missions involved operation of the Vigoride Orbital Service Vehicle (“OSV”) in orbit. During these four Vigoride missions, the system and technology were tested repeatedly. Improvements based on lessons learned during these missions were rapidly incorporated. As a result of these four missions, the Vigoride OSV has been successfully demonstrated in space and accumulated significant flight heritage.

The Company launched its latest OSV, Vigoride 7, on March 30, 2026 to low Earth orbit (“LEO”) with 10 payloads During this mission, which is expected to last several months, the Company is scheduled to provide hosted payload services to a range of U.S. Government customers with payloads aboard, including the Defense Advanced Research Projects Agency (“DARPA”), SpaceWERX, which is the innovation organization of the U.S. Space Force, the U.S. Air Force Research Laboratory, the National Aeronautics and Space Administration (“NASA”), as well as commercial customers.

In addition to the Vigoride OSV, Momentus is also offering its M-1000 satellite bus which has substantial commonality with Vigoride. With a growing demand for satellite bus services, Momentus is positioned to advance its hardware and flight-proven technology for this market. The M-1000 bus is a flexible option to meet various mission requirements. Innovations to improve sensor capability, maneuverability, increased power, and lower costs are integrated into the product. Momentus believes it can manufacture satellite buses like the M-1000 at a rapid and scalable pace.

During the three months ended March 31, 2026, the Company received Net cash provided by financing activities of approximately $16.7 million primarily from sales of Class A common stock. Since March 31, 2026, the Company also completed a private placement of securities for gross proceeds of $5.0 million and certain convertible notes were fully converted into shares of Class A common stock. See Notes 9 and 16 for additional details. These proceeds, combined with service revenue received during the quarter ended March 31, 2026, have improved the liquidity and financial position of the Company over December 31, 2025. The Company also raised approximately $10.5 million from sales of Class A common stock in May 2026.

In prior periods, the Company disclosed that conditions and events raised substantial doubt regarding its ability to continue as a going concern. Management believes that, as a result of the financings and related transactions completed since December 31, 2025, substantial doubt no longer exists.

Based on the Company’s current cash position, expected operating plan and forecasted liquidity needs, management has concluded that the Company has sufficient resources to fund operations and meet its obligations for at least the twelve-month period following the issuance date of these condensed consolidated interim financial statements.

The accompanying condensed consolidated interim financial statements have been prepared assuming that the Company will continue as a going concern. The going concern basis of presentation assumes that the Company will continue in operation one year after the date these condensed consolidated interim financial statements are issued and will be able to realize its assets and discharge its liabilities and commitments in the normal course of business.

The Company’s forecasts and operating plans are subject to risks and uncertainties as discussed above under Cautionary Note Regarding Forward-Looking Statements, and actual results could differ from management’s expectations.

Effective December 17, 2025, the Company’s stockholders approved a 1-for-17.85 reverse stock split of the Company’s Class A common stock. As a result of the reverse stock split, every 17.85 shares of Class A common stock issued and outstanding on December 17, 2025, were automatically combined into one share of Class A common stock. Any fractional shares resulting from the reverse stock split were rounded up to the next nearest whole share of Class A common stock. The reverse stock split did not affect the stated par value of the Class A common stock nor did it change the total number of the Company’s authorized shares of Class A common stock. Both the Company’s Class B common stock and Series A preferred stock were not affected by the reverse stock split.

Also on the effective date of each reverse stock split, all options, warrants, and other convertible securities of the Company outstanding immediately prior to the reverse stock split were adjusted by dividing the number of shares of Class A common stock into which the options, warrants, and other convertible securities are exercisable or convertible by the factor applied in the reverse stock split, and multiplying the exercise or conversion price thereof by the same amount, all in accordance with the terms of the plans, agreements, or arrangements governing such options, warrants, and other convertible securities and subject to rounding to the nearest whole share. Such proportional adjustments were also made to the number of shares and restricted stock units (“RSUs”) issued and issuable under the Company’s equity compensation plans.