Sec Form 4 Filing - Perrotti Thomas J @ AUTOMATIC DATA PROCESSING INC - 2019-08-30

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 Perrotti Thomas J 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) 08/30/2019 (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 08/30/2019 F 7,514 D $ 169.84 27,586.759 D Common Stock 09/03/2019 M 12,857 ( 1 ) A $ 107.35 40,443.759 D Common Stock 09/03/2019 M 4,047 ( 1 ) A $ 90.63 44,490.759 D Common Stock 09/03/2019 M 2,736 ( 1 ) A $ 75.1 47,226.759 D Common Stock 09/03/2019 S 101 ( 1 ) D $ 169.169 47,125.759 D Common Stock 09/03/2019 S 120 ( 1 ) D $ 169.195 47,005.759 D Common Stock 09/03/2019 S 200 ( 1 ) D $ 169.132 46,805.759 D Common Stock 09/03/2019 S 300 ( 1 ) D $ 168.926 46,505.759 D Common Stock 09/03/2019 S 700 ( 1 ) D $ 169.149 45,805.759 D Common Stock 09/03/2019 S 842 ( 1 ) D $ 167.667 44,963.759 D Common Stock 09/03/2019 S 1,062 ( 1 ) D $ 167.691 43,901.759 D Common Stock 09/03/2019 S 1,763 ( 1 ) D $ 167.792 42,138.759 D Common Stock 09/03/2019 S 2,790 ( 1 ) D $ 167.882 39,348.759 D Common Stock 09/03/2019 S 4,088 ( 1 ) D $ 167.295 35,260.759 D Common Stock 09/03/2019 S 5,671 ( 1 ) D $ 168.065 29,589.759 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) $ 169.84 09/01/2019 A 34,426 09/01/2020 08/31/2029 Common Stock 34,426 $ 0 34,426 D Stock Option (Right to Buy) $ 75.1 09/03/2019 M 2,736 09/01/2016 08/31/2025 Common Stock 2,736 $ 75.1 0 D Stock Option (Right to Buy) $ 90.63 09/03/2019 M 4,047 09/01/2017 08/31/2026 Common Stock 4,047 $ 90.63 4,048 D Stock Option (Right to Buy) $ 107.35 09/03/2019 M 12,857 09/01/2018 08/31/2027 Common Stock 12,857 $ 107.35 12,857 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Perrotti Thomas J ONE ADP BOULEVARD ROSELAND, NJ07068 Corp. VP Signatures Michael A. Bonarti (POA on file) 09/04/2019 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 2018

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).

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