Proceeds boost capital position to continue advancing satellite technology as well as space logistics and infrastructure services

Momentus Inc. (NASDAQ:MNTS) ("Momentus" or the "Company"), a U.S. commercial space company specializing in satellite technology, space transportation, and in-orbit services, today announced two major developments:

• Execution of key capital raising activities that strengthens the Company's financial position; and
• Successful transition of its Vigoride 7 Orbital Service Vehicle (OSV), launched on the SpaceX Transporter-16 mission, into hosted payload mission operations for customers.

Capital Raising and Strengthened Financial Position

• Momentus fully utilized the remaining capacity on its $50 million at-the-market (ATM) program.
• As previously reported, on May 28, 2026, Momentus completed a $25 million private placement with two large institutional investors priced at-the-market under Nasdaq rules.
• In addition, existing holders of Momentus warrants recently exercised 1,807,938 warrants, generating gross proceeds of more than $9.6 million, and leaving only 501,162 unexercised warrants outstanding.
• Following these transactions, Momentus has approximately $76 million in cash on hand as of the date of this release, and the Company remains debt free.
• As of the date of this release, Momentus has 16,983,959 shares outstanding, including 765,580 pre-funded warrants.