Comera SPAC Presentation Deck

Detailed Transaction Overview Pro Forma Valuation ¹, 2 ($M, except per share data) Pro Forma Shares Outstanding² (x) Illustrative Share Price Pro Forma Equity Value² (-) Pro Forma Net Cash³ Pro Forma Enterprise Value² Pro Forma Share Ownership ¹,2,4 41.1% 10.1% 48.8% 25.8 $10.00 $258.4 $107.1 $151.3 Existing Comera Stockholders OTR Public Stockholders OTR Founder Shares Illustrative Sources & Uses Sources ($M) OTR Cash in Trust¹ Comera Equity Rollover Existing Comera Cash OTR Founder Shares Total Sources Uses ($M) Comera Equity Rollover Cash to Balance Sheet¹ OTR Founder Shares Transaction Cash Fees, Expenses & Deferred UW Fees Total Uses 1. Assumes no redemptions by OTR public stockholders 2. Pro forma diluted basis at $10.00 per share, assumes no redemptions and excludes impact of unvested stock-based compensation and unvested shares pursuant to the new, to-be-established equity incentive plan, earn-out shares and warrants Comera 3. Includes existing cash of ~$6.5M from Comera a/o December 31, 2021 plus an additional ~$1.0M from Comera employee options exercised 4. Includes shares issued to Maxim Group LLC pursuant to a sell-side advisory fee LIFE SCIENCES $107.1 $126.0 $7.5 $26.1 $266.7 $126.0 $107.1 $26.1 $7.5 $266.7 29

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