Manufacturing. Accelerated.

Transaction summary Desktop Metal team Ric Fulop Co-founder, Chairman & CEO Elizabeth Linardos CFO Arjun Aggarwal VP Product & Business Development Trine Acquisition Corp team Leo Hindery, Jr. Chairman & CEO Tom Wasserman Director Pierre Henry CFO & EVP of Development Transaction highlights Transaction structure Valuation Capital structure • · • Ownership • • Trine Acquisition Corp (NYSE:TRNE) is a publicly listed special purpose acquisition company with $300M in cash $275M PIPE commitments before transaction announcement • $1.8B enterprise value with a strong balance sheet Implied 1.9x 2025E revenue of $942M offers an attractive valuation relative to peer average Pre-transaction, Desktop Metal is already fully-funded to achieve a positive self-sustaining cash flow profile Post-transaction, ~$625M on balance sheet(1) enables significant optionality to enhance growth, profitability and diversification 74% existing shareholders; 14% SPAC and founder shares; 11% PIPE investors(1)(2) Trine has identified Desktop Metal as a unique and compelling opportunity to invest in the only publicly-traded, pure-play Additive Manufacturing 2.0 company primed to be the industry leader due to a proprietary and defensible technology platform that is significantly faster, more cost effective, higher quality and more environmentally sustainable than its competitors. D Desktop Metal 1. Assumes no redemptions by Trine Acquisition Corp's existing shareholders and transaction expenses of approximately $49M. See slide 33 "Detailed transaction overview" for key assumptions and additional details. Percentages may not total 100 due to rounding. 2. 4

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