X0306 4 2021-09-09 0 0001725057 Ceridian HCM Holding Inc. CDAY 0001734324 Throop Gerald C C/O CERIDIAN HCM HOLDING INC. 3311 EAST OLD SHAKOPEE ROAD MINNEAPOLIS MN 55425 1 0 0 0 Common Stock 2021-09-09 4 S 0 8736 112.70 D 14638 D Exchangeable Shares Common Stock 23185 23185 D Option (right to buy) 65.26 2030-05-08 Common Stock 11916 11916 D Option (right to buy) 74.20 2030-08-21 Common Stock 4643 4643 D Option (right to buy) 87.40 2031-05-07 Common Stock 10069 10069 D Includes (i) 7,955 shares issuable at the election of the recipient pursuant to vested Restricted Stock Units (RSU), granted on April 25, 2018, (ii) 3,988 shares issuable at the election of the recipient pursuant to vested RSUs, granted on May 15, 2019, and (iii) of the 2,695 RSUs granted on August 21, 2020, 898 shares are issuable at the election of the recipient pursuant to vested RSUs, and 898 and 899 shares that vest and become issuable at the election of the recipient on August 21, 2022 and August 21, 2023, respectively. Represents exchangeable shares of Ceridian AcquisitionCo ULC, a wholly owned subsidiary of the Issuer, that are exchangeable at the option of the holder for shares of common stock of the Issuer. Each exchangeable share is convertible into one share of common stock of the Issuer, subject to adjustment. The exchangeable shares are currently exercisable and have no expiration date. Fully vested and exercisable. Of the 10,069 options granted on May 7, 2021, 2,518 options are vested and exercisable, and 2,517 options vest and become exercisable on each of November 7, 2021, February 7, 2022, and May 7, 2022. For Gerald Throop pursuant to the Power of Attorney previously filed /s/ William E. McDonald, attorney-in-fact 2021-09-10