X0306 4 2023-02-28 0 0001596967 Moelis & Co MC 0001604685 MAHMOODZADEGAN NAVID C/O MOELIS & COMPANY 399 PARK AVENUE, 5TH FLOOR NEW YORK NY 10022 1 1 0 0 Co-President, MD Class A Common Stock 2023-02-28 4 S 0 52209 43.22 D 177192 D Class A Common Stock 2023-03-01 4 S 0 54009 43.13 D 123183 D Mr. Mahmoodzadegan's ownership of 123,183 shares of Class A common stock is in addition to (i) 692,996 units of unvested or restricted equity granted to Mr. Mahmoodzadegan as incentive compensation for fiscal years 2018 through 2022 and (ii) 65,688 units of equity that are subject to vesting and performance provisions granted to Mr. Mahmoodzadegan as incentive compensation for fiscal year 2022. /s/ Osamu Watanabe as attorney-in-fact for Navid Mahmoodzadegan 2023-03-02