DIGITAL MANUFACTURING. REIMAGINED.

Altimar Acquisition Corp. II Overview Altimar Acquisition Corp. II ("Altimar II") is sponsored by an affiliate of HPS Investment Partners ("HPS"), a natural partner for Fathom with a proven track record of success and experienced leadership ALTIMAR ACQUISITION CORP. II HPS Investment Partners Altimar II is a $345mm SPAC sponsored by an affiliate of HPS Investment Partners, one of the world's largest alternative asset managers $72bn AUM¹ 150+ Investment Professionals 12 Offices Proven SPAC Track Record HPS has developed valuable SPAC experience via Altimar I and its closed business combination with Blue Owl Capital (NYSE: OWL) and Trine Acquisition Corp. and its closed business combination with Desktop Metal (NYSE: DM) Company Vehicle HPS SPAC COMPANIES DIL Desktop Metal TRINE 2 Announced / Closed August 2020 / December 2020 BLUE OWL ALTIMAR December 2020 / May 2021 PIPE Size $275mm $1.5bn Current Equity Value (as of 7/14/21) $2.6bn $16.4bn Current Firm Value (as of 7/14/21) Trading performance $2.0bn (5.1%) / $9.493 $16.7bn 31.3% $13.133 S Experienced Leadership • • HPS is led by Scott Kapnick (Governing Partner and CEO), former Partner and Co-Head of Investment Banking at Goldman Sachs Altimar II CEO, Tom Wasserman, is a career Growth Equity investor and has led the HPS SPAC platform since inception HPS Network & Value Add • . HPS employs an active approach to help its partners' business development efforts to drive top line growth Track record of supporting businesses through their lifecycles with capital investments and business development support Source: Company filings, Factset as of 7/14/2021 1 AUM as of June 1, 2021; 2 Trine was co-sponsored by HPS and an entity controlled by Leo Hindery, Jr.; 3 Calculated based on current share price as of July 14, 2021 and a $10 / share base (as of 7/14/21) Desktop Metal and Blue Owl Capital have been well received in the public markets since their debut Altimar II's Sponsor group has a proven track record of success in the SPAC market including specific experience within the industrial tech space FATHOM Fathom Proprietary and Confidential

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