Sec Form 4 Filing - Black Maria @ AUTOMATIC DATA PROCESSING INC - 2021-12-01

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

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1. Name and Address of Reporting Person Black Maria 2. Issuer Name and Ticker or Trading Symbol AUTOMATIC DATA PROCESSING INC [ ADP] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Corp. VP (Last) (First) (Middle) ONE ADP BOULEVARD 3. Date of Earliest Transaction (MM/DD/YY) 12/01/2021 (Street) ROSELAND, NJ07068 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 12/01/2021 M 19,454( 1 ) A $ 146.75 50,388.5316 D Common Stock 12/01/2021 M 17,213( 1 ) A $ 169.84 67,601.5316 D Common Stock 12/01/2021 M 11,426( 1 ) A $ 138.53 79,027.5316 D Common Stock 12/01/2021 S 100( 1 ) D $ 231.19 78,927.5316 D Common Stock 12/01/2021 S 100( 1 ) D $ 225.33 78,827.5316 D Common Stock 12/01/2021 S 200( 1 ) D $ 231.845 78,627.5316 D Common Stock 12/01/2021 S 302( 1 ) D $ 227.189 78,325.5316 D Common Stock 12/01/2021 S 400( 1 ) D $ 225.458 77,925.5316 D Common Stock 12/01/2021 S 500( 1 ) D $ 228.114 77,425.5316 D Common Stock 12/01/2021 S 579( 1 ) D $ 227.71 76,846.5316 D Common Stock 12/01/2021 S 600( 1 ) D $ 230.717 76,246.5316 D Common Stock 12/01/2021 S 698( 1 ) D $ 230.973 75,548.5316 D Common Stock 12/01/2021 S 700( 1 ) D $ 229.819 74,848.5316 D Common Stock 12/01/2021 S 1,227( 1 ) D $ 230.075 73,621.5316 D Common Stock 12/01/2021 S 1,595( 1 ) D $ 226.881 72,026.5316 D Common Stock 12/01/2021 S 1,953( 1 ) D $ 231.94 70,073.5316 D Common Stock 12/01/2021 S 1,988( 1 ) D $ 227.13 68,085.5316 D Common Stock 12/01/2021 S 2,128( 1 ) D $ 228.058 65,957.5316 D Common Stock 12/01/2021 S 2,444( 1 ) D $ 228.957 63,513.5316 D Common Stock 12/01/2021 S 2,453( 1 ) D $ 229.496 61,060.5316 D Common Stock 12/01/2021 S 2,752( 1 ) D $ 229.211 58,308.5316 D Common Stock 12/01/2021 S 3,000( 1 ) D $ 230.403 55,308.5316 D Common Stock 12/01/2021 S 3,432( 1 ) D $ 226.287 51,876.5316 D Common Stock 12/01/2021 S 3,439( 1 ) D $ 226.409 48,437.5316 D Common Stock 12/01/2021 S 3,825( 1 ) D $ 231.145 44,612.5316 D Common Stock 12/01/2021 S 4,218( 1 ) D $ 228.013 40,394.5316 D Common Stock 12/01/2021 S 4,318( 1 ) D $ 230.192 36,076.5316 D Common Stock 12/01/2021 S 7,642( 1 ) D $ 228.535 28,434.5316 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 Stock Option (Right to Buy) $ 146.75 12/01/2021 M 19,454 09/01/2019 08/31/2028 Common Stock 19,454 $ 146.75 6,485 D Stock Option (Right to Buy) $ 169.84 12/01/2021 M 17,213 09/01/2020 08/31/2029 Common Stock 17,213 $ 169.84 17,213 D Stock Option (Right to Buy) $ 138.53 12/01/2021 M 11,426 09/01/2021 08/31/2030 Common Stock 11,426 $ 138.53 34,280 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Black Maria ONE ADP BOULEVARD ROSELAND, NJ07068 Corp. VP Signatures David Kwon (POA on File) 12/03/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person in September 2021.

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.
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