X0306 4 2021-11-05 0 0001666291 Claros Mortgage Trust, Inc. CMTG 0001424106 Mack Richard C/O MACK REAL ESTATE CREDIT STRATEGIES 60 COLUMBUS CIRCLE, 20TH FLOOR NEW YORK NY 10023 1 1 0 0 CEO and Chairman COMMON STOCK 2021-11-05 4 P 0 268097 18.65 A 1005289 D COMMON STOCK 1500000 I By CMTG Holdings Consists of 1,500,000 shares of common stock held by Mack CMTG Holdings LLC, a Delaware limited liability company ("Mack CMTG Holdings"). Mr. Mack is one of two managing members of Mack CMTG Holdings and thus is deemed to beneficially own the shares held by Mack CMTG Holdings. Mr. Mack disclaims beneficial ownership of these shares, except to the extent of any pecuniary interest therein. /s/ Jeffrey D. Siegel, Attorney-in-fact for Richard Mack 2021-11-09