X0306 4 2020-12-06 0 0001823945 ALTIMAR ACQUISITION CORP. ATAC 0001823946 ALTIMAR SPONSOR, LLC C/O ALTIMAR ACQUISITION CORPORATION 40 WEST 57TH STREET, 33RD FLOOR NEW YORK NY 10019 0 0 1 0 Class B Ordinary Shares, par value $0.0001 2020-12-06 4 J 0 312500 D Class A ordinary shares 312500 6675000 D As described in Altimar Acquisition Corporation's (the "issuer") registration statement on Form S-1 (File No. 333-249368) under the heading "Description of Securities--Founder Shares", the Class B ordinary shares, par value $0.0001 per share, will automatically convert into Class A ordinary shares, par value $0.0001 per share, of the issuer at the time of the issuer's initial business combination, or earlier at the option of the holder, on a one-for-one basis, subject to adjustment for share splits, share capitalizations, reorganizations, recapitalizations and the like, and certain anti-dilution rights and have no expiration date. This Form 4 reflects the automatic surrender to the issuer of 312,500 shares of the issuer's Class B ordinary shares, par value $0.0001 per share, for no consideration by the reporting person pursuant to contractual arrangements with the issuer, triggered by the election by the underwriters of the issuer's initial public offering to partially exercise their option to purchase additional units and surrender their right to purchase the remainder of the option units. /s/ Faith Rosenfeld, as Chief Administrative Officer 2020-12-07