Sec Form 4 Filing - Throop Gerald C @ Ceridian HCM Holding Inc. - 2021-05-07

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL OMB Number: 3235-0287 Expires: November 30, 2011 Estimated average burden hours per response... 0.5

1. Name and Address of Reporting Person Throop Gerald C 2. Issuer Name and Ticker or Trading Symbol Ceridian HCM Holding Inc. [ CDAY] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O CERIDIAN HCM HOLDING INC., 3311 EAST OLD SHAKOPEE ROAD 3. Date of Earliest Transaction (MM/DD/YY) 05/07/2021 (Street) MINNEAPOLIS, MN55425 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 23,374 ( 1 ) D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Exchangeable Shares ( 2 ) ( 2 ) ( 2 ) Common Stock 23,185 23,185 D Option (right to buy) $ 65.26 ( 3 ) 05/08/2030 Common Stock 11,916 11,916 D Option (right to buy) $ 74.2 ( 4 ) 08/21/2030 Common Stock 4,643 4,643 D Option (right to buy) $ 87.4 05/07/2021 A 10,069 ( 5 ) 05/07/2031 Common Stock 10,069 $ 0 10,069 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Throop Gerald C C/O CERIDIAN HCM HOLDING INC. 3311 EAST OLD SHAKOPEE ROAD MINNEAPOLIS, MN55425 X Signatures /s/ William E. McDonald, attorney-in-fact 05/11/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Includes (i) 8,736 shares of common stock, (ii) 7,955 shares issuable at the election of the recipient pursuant to vested Restricted Stock Units (RSU), granted on April 25, 2018, (iii) 3,988 shares issuable at the election of the recipient pursuant to vested RSUs, granted on May 15, 2019, and (iv) 2,695 shares issuable pursuant to RSUs, granted on August 21, 2020, that vest in three annual installments beginning on August 21, 2021. ( 2 )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. ( 3 )These options will be fully vested and exercisable on May 8, 2021. ( 4 )Of the 4,643 options granted on August 21, 2020, 2,322 options are vested and exercisable, and 1,161 and 1,160 options vest and become exercisable on May 21, 2021 and August 21, 2021, respectively. ( 5 )These options, granted on May 7, 2021, vest and become exercisable as to 25% of the options on the last day of each three-month period commencing on the date of grant.

Remarks: For Gerald Throop pursuant to the Power of Attorney previously filed

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.