Momentus SPAC Presentation Deck

RAPID VIGORIDE DEVELOPMENT THROUGH A SERIES OF COMMERCIAL FLIGHTS RAMPING FULL-SCALE COMMERCIALIZATION OF THE VIGORIDE MET THRUSTER TEST LAUNCH July 2019 IN-SPACE MET THRUSTER TEST OBJECTIVES: ✓ First in-space test of MET thruster and feed system Includes water pump and avionics testing TECHNOLOGY UPGRADES: ✓ Verified MET firing through pressure, temperature, and reflected power measurements compared to ground tests Feed system test success HYBRID DEMO COMMERCIAL LAUNCH December 2020 VIGORIDE VI.O OBJECTIVES: Separation from launch vehicle, free-flying mode deployment of customers Small delta-v maneuvers with empty vehicle TECHNOLOGY UPGRADES: EELV Secondary Payload Adapter ("ESPA") compatible structure Deployment mechanisms and sequencers Lower power MET thruster Attitude control resistojet thrusters LIMITED COMMERCIAL LAUNCHES H1’2021 VIGORIDE V2.0 OBJECTIVES: ✓ Multiple launches (2) with larger payload mass and volume Small delta-v maneuver for customer payload (delta-altitude) Larger delta-v maneuvers with empty vehicle TECHNOLOGY UPGRADES: ✓ ESPA Grande compatible larger structure, more powerful MET thrusters (2x750W) Radiation tolerant and fault-tolerant avionics design High power solar panels Copyright 2020. Momentus Inc. Proprietary & Confidential. Not Export Controlled. Any use, reproduction, or distribution without the express consent of Momentus is strictly prohibited. If you are not the intended recipient, please immediately delete this document and any associated communications. FULL COMMERCIAL LAUNCH Q4'2021 VIGORIDE V2.1 OBJECTIVES: Provide full maneuvering capabilities ✓ Fly multiple vehicles (3) aboard the same Falcon 9 TECHNOLOGY UPGRADES: ✓ New low-cost, high power solar panels ✓ Multiple incremental upgrades in propulsion, feed system, and structure 22

View entire presentation