Momentus SPAC Presentation Deck

DETAILED TRANSACTION OVERVIEW ($ IN MILLIONS) Total Sources SOURCES&USES Existing Momentus Shareholders SPAC Cash in Trust PIPE Equity¹ Sources Total Uses Uses Existing Momentus Shareholders Cash to Balance Sheet Cash to Existing Shareholders Estimated Fees & Expenses Amount $1,130 173 175 $1,478 Amount $1,130 283 30 35 $1,478 % 76% 12% 12% 100% % 76% 19% 2% 2% 100% PRO FORMA VALUATION PF Shares Outstanding² Share Price PF Equity Value (+) Assumed PF Net Cash³ PF Enterprise Value to Market 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. PIPE (incl. Sponsor Co-investment) 12% PF OWNERSHIP SPLIT SPAC Investors 11% SPAC Sponsors 2% Existing Shareholders 75% Amount 151.2 $10.00 $1,512 (312) $1,200 Note: Assumes no redemptions from SPAC investors. 1. Includes $10M sponsor co-investment 2. Includes 113.0m Momentus rollover shares, 16.5m PIPE shares, 1.0m sponsor co- investment shares, 3.4m SPAC sponsor shares (2.9m founder shares and 0.5m private placement units) and 17.3m SPAC investors shares. 3. Estimated net cash on Momentus balance sheet at close of ~$29M, inclusive of options exercise 32

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