Momentus, trading on the Nasdaq under the symbol MNTSW, is a U.S.-based provider of in-space transportation and logistics services. Headquartered in Santa Clara, California, the company develops and operates orbital “space tugs” designed to carry small satellites to their final deployment orbits. Momentus’s core offering, its Vigoride vehicle, leverages proprietary water-plasma propulsion technology to deliver customer payloads with precision, enabling what the industry refers to as “last-mile” satellite delivery.
Momentus offers a suite of mission services that extend beyond simple orbital transfers. In addition to repositioning satellites, its vehicles can host customer experiments, provide life-extension services by refueling existing spacecraft, and perform on-orbit maintenance and inspection tasks. The company’s technology is built around microwave electrothermal thrusters that use water as a propellant, providing a cost-effective and environmentally benign alternative to conventional chemical or xenon-based electric propulsion systems.
Founded in 2017 by space entrepreneur Mikhail Kokorich, Momentus went public in 2021 via a merger with a special purpose acquisition company (SPAC). The firm has since conducted multiple demonstration missions to validate its propulsion systems and operational workflows, advancing toward full commercial service for government and commercial satellite operators. Its test flights have been carried out in collaboration with leading launch providers, including SpaceX and Rocket Lab, enabling the company to refine its in-orbit delivery capabilities.
Serving a global customer base, Momentus positions itself as a strategic partner for satellite constellation operators, defense agencies, and research institutions seeking flexible and reliable in-space logistics. By consolidating deployment, transfer, and servicing activities into a single platform, the company aims to lower the barriers to entry for new space ventures and foster a more sustainable satellite ecosystem.
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