SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13D
(Rule 13d-101)
INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
TO § 240.13d-1(a) AND AMENDMENTS THERETO FILED
PURSUANT TO § 240.13d-2(a)
Under the Securities Exchange Act of 1934
(Amendment No. 6)*

Automatic Data Processing, Inc.
(Name of Issuer)
Common Stock, par value $0.10 per share
(Title of Class of Securities)
053015103
(CUSIP Number)
Steve Milankov, Esq.
Pershing Square Capital Management, L.P.
888 Seventh Avenue, 42nd Floor
New York, New York 10019
(212) 813-3700
With a copy to:
Richard M. Brand, Esq.
Cadwalader, Wickersham & Taft LLP
One World Financial Center
New York, New York 10281
(212) 504-6000
 
(Name, Address and Telephone Number of Person
Authorized to Receive Notices and Communications)
August 16, 2018
(Date of Event which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition which is the subject of this Schedule 13D, and is filing this schedule because of §§240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.  ☐

Note: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See §240.13d-7 for other parties to whom copies are to be sent.

 
*	The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.	
The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes ).

 

			
CUSIP No. 053015103	 		

  1     	 	NAME OF REPORTING PERSON
 
Pershing Square Capital Management, L.P.	
  2    	 	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
(a)  ☐        (b)  ☒
 	
  3    	 	SEC USE ONLY
 	
  4    	 	SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
OO (See Item 3)	
  5    	 	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)
 
☐	
  6    	 	CITIZENSHIP OR PLACE OF ORGANIZATION
 
Delaware	
							
NUMBER OF
SHARES
  BENEFICIALLY  
OWNED BY
EACH
REPORTING
PERSON
WITH
 	 	   7  	  	SOLE VOTING POWER
 
NONE	
	 	   8  	  	SHARED VOTING POWER
 
21,304,500	
	 	   9  	  	SOLE DISPOSITIVE POWER
 
NONE	
	 	 10  	  	SHARED DISPOSITIVE POWER
 
21,304,500	
							
11    	 	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
21,304,500	
12    	 	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 
☒	
13    	 	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
4.9%*	
14    	 	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
IA	
 
*	This calculation is based on 438,082,756 shares of Common Stock outstanding as of July 31, 2018 as reported in the Issuer’s Annual Report on Form 10-K filed on August 3, 2018 for the calendar year ended June 30, 2018.	

					
CUSIP No. 053015103	  				

  1     	 	NAME OF REPORTING PERSON
 
PS Management GP, LLC	
  2    	 	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
(a)  ☐        (b)  ☒
 	
  3    	 	SEC USE ONLY
 	
  4    	 	SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
OO (See Item 3)	
  5    	 	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)
 
☐	
  6    	 	CITIZENSHIP OR PLACE OF ORGANIZATION
 
Delaware	
							
NUMBER OF
SHARES
  BENEFICIALLY  
OWNED BY
EACH
REPORTING
PERSON
WITH
 	  	   7  	  	SOLE VOTING POWER
 
NONE	
	  	   8  	  	SHARED VOTING POWER
 
21,304,500	
	  	   9  	  	SOLE DISPOSITIVE POWER
 
NONE	
	  	10  	  	SHARED DISPOSITIVE POWER
 
21,304,500	
							
11    	 	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
21,304,500	
12    	 	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 
☒	
13    	 	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
4.9%*	
14    	 	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
OO	
 
*	This calculation is based on 438,082,756 shares of Common Stock outstanding as of July 31, 2018 as reported in the Issuer’s Annual Report on Form 10-K filed on August 3, 2018 for the calendar year ended June 30, 2018.	

			
CUSIP No. 053015103	  		

  1     	 	NAME OF REPORTING PERSON
 
William A. Ackman	
  2    	 	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
(a)  ☐        (b)  ☒
 	
  3    	 	SEC USE ONLY
 	
  4    	 	SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
OO (See Item 3)	
  5    	 	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)
 
☐	
  6    	 	CITIZENSHIP OR PLACE OF ORGANIZATION
 
United States	
							
NUMBER OF
SHARES
  BENEFICIALLY  
OWNED BY
EACH
REPORTING
PERSON
WITH	  	   7  	  	SOLE VOTING POWER
 
NONE	
	  	   8  	  	SHARED VOTING POWER
 
21,304,500	
	  	   9  	  	SOLE DISPOSITIVE POWER
 
NONE	
	  	 10  	  	SHARED DISPOSITIVE POWER
 
21,304,500	
							
11    	 	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
21,304,500	
12    	 	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 
☒	
13    	 	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
4.9%*	
14    	 	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
IN	
 
*	This calculation is based on 438,082,756 shares of Common Stock outstanding as of July 31, 2018 as reported in the Issuer’s Annual Report on Form 10-K filed on August 3, 2018 for the calendar year ended June 30, 2018.	

This amendment No. 6 (the “ Amendment No.  6 ”) to Schedule 13D relates to the Schedule 13D filed on August 7, 2017 (the “ Original Schedule 13D ”, as amended and supplemented through the date of this Amendment No. 6, the “ Schedule 13D ”) by (i) Pershing Square Capital Management, L.P., a Delaware limited partnership (“ Pershing Square ”); (ii) PS Management GP, LLC, a Delaware limited liability company (“ PS Management ”); and (iii) William A. Ackman, a citizen of the United States of America (together with Pershing Square and PS Management, the “ Reporting Persons ”) relating to the common stock, par value $0.10 per share (the “ Common Stock ”), of Automatic Data Processing, Inc., a Delaware corporation (the “ Issuer ”).
Capitalized terms used but not defined in this Amendment No. 6 shall have the meetings set forth in the Schedule 13D.
Except as specifically amended by this Amendment No. 6, the Schedule 13D is unchanged.
 
Item 1.	Security and Issuer	
The second and third paragraphs of Item 1 of the Original Schedule 13D is hereby amended and restated in full to read as follows:
“The Reporting Persons beneficially own 21,304,500 shares of Common Stock (the “ Subject Shares ”), which number includes: 4,029,427 shares of Common Stock, and 17,275,073 shares underlying listed and over-the-counter American-style call options.
The Subject Shares represent approximately 4.9% of the outstanding shares of Common Stock based on 438,082,756 shares of Common Stock outstanding as of July 31, 2018 as reported in the Issuer’s Annual Report on Form 10-K filed on August 3, 2018 for the calendar year ended June 30, 2018.”
 
Item 4.	Purpose of the Transaction	
Item 4 of the Original Schedule 13D is hereby amended and supplemented by adding the following information:
“The Reporting Persons on behalf of the PS Funds acquired and sold certain Common Stock and certain American-style call options for portfolio management purposes, the net impact of which was to reduce the Reporting Persons’ beneficial ownership to below 5% of the outstanding shares of Common Stock of the Issuer. The trades are set forth in Exhibit 99.12.”
 
Item 5.	Interest in Securities of the Issuer	
Item 5 of the Original Schedule 13D is hereby amended and supplemented by adding the following information:
“(a), (b) Information about the number and percentage of shares of Common Stock beneficially owned by the Reporting Persons is set forth in Item 1, and that information is incorporated by reference herein.
(c) Exhibit 99.12 filed herewith, which is incorporated by reference into this Item 5(c) as if restated in full, and Exhibit 99.11 previously filed, describe all of the transactions in the Common Stock or derivatives relating to Common Stock that were effected in the past 60 days by the Reporting Persons for the benefit of Pershing Square and the PS Funds. Except as set forth in Exhibit 99.11 and Exhibit 99.12 no reportable transactions were effected by any Reporting Person within the last 60 days.

(e) The Reporting Persons ceased to be beneficial owners of more than five percent of the shares of Common Stock on August 16, 2018.”
 
Item 7.	Material to be Filed as Exhibits	
Item 7 of the Original Schedule 13D is hereby amended and supplemented by adding a reference to the following exhibit:

Exhibit 99.12	  	Trading data.	

SIGNATURE
After reasonable inquiry and to the best of each of the undersigned’s knowledge and belief, each of the undersigned certify that the information set forth in this statement is true, complete and correct.
Dated: August 17, 2018

PERSHING SQUARE CAPITAL MANAGEMENT, L.P.	
		
By:	 	PS Management GP, LLC, its General Partner	
		
By	 	/s/ William A. Ackman	
	 	William A. Ackman	
	 	Managing Member	
	
PS MANAGEMENT GP, LLC	
		
By	 	/s/ William A. Ackman	
	 	William A. Ackman	
	 	Managing Member	
		
	 	/s/ William A. Ackman	
	 	William A. Ackman	

INDEX TO EXHIBITS

	Exhibit	  		Description	
			
Exhibit 99.1	  	Joint Filing Agreement, dated as of August 7, 2017, among Pershing Square, PS Management and William A. Ackman.*		
			
Exhibit 99.2	  	Trading data.*		
			
Exhibit 99.3	  	Form of Confirmation for Forward Purchase Contracts.*		
			
Exhibit 99.4	  	Form of Confirmation for Call Options.*		
			
Exhibit 99.5	  	Notification Letter, dated as of August 7, 2017.*		
			
Exhibit 99.6	  	Press Release, dated as of August 7, 2017.*		
			
Exhibit 99.7	  	Trading data.*		
			
Exhibit 99.8	  	Letter, dated September 7, 2017.*		
			
Exhibit 99.9	  	Letter, dated September 15, 2017.*		
			
Exhibit 99.10	  	Trading data.*		
			
Exhibit 99.11	  	Trading data.*		
			
Exhibit 99.12	  	Trading data.		
 
*	Previously Filed	

Exhibit 99.12

Name	 	Trade Date	  	Buy/Sell/
Exercise	  	No. of
Shares /
Quantity	 	  	Unit
Cost	 	  	Strike
Price	 	  	Trade
Amount	 	  	Security	  	Expiration Date	
Pershing Square, L.P.	 	August 15, 2018	  	Sell	  	 	5,510	 	  	$	69.79	 	  	$	76.06	 	  	$	384,557	 	  	OTC Call Option	  	June 23, 2020	
Pershing Square, L.P.	 	August 16, 2018	  	Sell	  	 	62,268	 	  	$	70.49	 	  	$	76.06	 	  	$	4,389,271	 	  	OTC Call Option	  	June 23, 2020	
Pershing Square, L.P.	 	August 17, 2018	  	Sell	  	 	63,612	 	  	$	71.69	 	  	$	76.06	 	  	$	4,560,376	 	  	OTC Call Option	  	June 23, 2020	
									
Pershing Square II, L.P.	 	July 17, 2018	  	Sell	  	 	3,096	 	  	$	67.23	 	  	$	76.06	 	  	$	208,144	 	  	OTC Call Option	  	June 23, 2020	
Pershing Square II, L.P.	 	July 18, 2018	  	Sell	  	 	6,838	 	  	$	67.16	 	  	$	76.06	 	  	$	459,240	 	  	OTC Call Option	  	June 23, 2020	
Pershing Square II, L.P.	 	July 19, 2018	  	Sell	  	 	2,910	 	  	$	66.84	 	  	$	76.06	 	  	$	194,504	 	  	OTC Call Option	  	June 23, 2020	
Pershing Square II, L.P.	 	July 20, 2018	  	Sell	  	 	760	 	  	$	67.65	 	  	$	76.06	 	  	$	51,414	 	  	OTC Call Option	  	June 23, 2020	
Pershing Square II, L.P.	 	July 23, 2018	  	Sell	  	 	4,578	 	  	$	67.27	 	  	$	76.06	 	  	$	307,962	 	  	OTC Call Option	  	June 23, 2020	
Pershing Square II, L.P.	 	July 24, 2018	  	Sell	  	 	865	 	  	$	67.57	 	  	$	76.06	 	  	$	58,444	 	  	OTC Call Option	  	June 23, 2020	
Pershing Square II, L.P.	 	July 25, 2018	  	Sell	  	 	1,137	 	  	$	67.51	 	  	$	76.06	 	  	$	76,759	 	  	OTC Call Option	  	June 23, 2020	
Pershing Square II, L.P.	 	August 13, 2018	  	Sell	  	 	11,165	 	  	$	69.16	 	  	$	76.06	 	  	$	772,171	 	  	OTC Call Option	  	June 23, 2020	
Pershing Square II, L.P.	 	August 14, 2018	  	Sell	  	 	5,234	 	  	$	70.04	 	  	$	76.06	 	  	$	366,589	 	  	OTC Call Option	  	June 23, 2020	
Pershing Square II, L.P.	 	August 15, 2018	  	Sell	  	 	1,621	 	  	$	69.79	 	  	$	76.06	 	  	$	113,134	 	  	OTC Call Option	  	June 23, 2020	
Pershing Square II, L.P.	 	August 16, 2018	  	Sell	  	 	3,276	 	  	$	70.49	 	  	$	76.06	 	  	$	230,925	 	  	OTC Call Option	  	June 23, 2020	
Pershing Square II, L.P.	 	August 17, 2018	  	Sell	  	 	3,156	 	  	$	71.69	 	  	$	76.06	 	  	$	226,255	 	  	OTC Call Option	  	June 23, 2020	
									
Pershing Square Holdings, Ltd.	 	July 17, 2018	  	Sell	  	 	195,939	 	  	$	137.27	 	  	 	N/A	 	  	$	26,897,333	 	  	Common Stock	  	N/A	
Pershing Square Holdings, Ltd.	 	July 17, 2018	  	Sell	  	 	83,654	 	  	$	67.23	 	  	$	76.06	 	  	$	5,624,058	 	  	OTC Call Option	  	June 23, 2020	
Pershing Square Holdings, Ltd.	 	July 18, 2018	  	Sell	  	 	493,162	 	  	$	67.16	 	  	$	76.06	 	  	$	33,120,760	 	  	OTC Call Option	  	June 23, 2020	
Pershing Square Holdings, Ltd.	 	July 19, 2018	  	Sell	  	 	214,401	 	  	$	66.84	 	  	$	76.06	 	  	$	14,330,563	 	  	OTC Call Option	  	June 23, 2020	
Pershing Square Holdings, Ltd.	 	July 20, 2018	  	Sell	  	 	22,240	 	  	$	67.65	 	  	$	76.06	 	  	$	1,504,536	 	  	OTC Call Option	  	June 23, 2020	
Pershing Square Holdings, Ltd.	 	July 23, 2018	  	Sell	  	 	330,422	 	  	$	67.27	 	  	$	76.06	 	  	$	22,227,488	 	  	OTC Call Option	  	June 23, 2020	
Pershing Square Holdings, Ltd.	 	July 24, 2018	  	Sell	  	 	47,635	 	  	$	67.57	 	  	$	76.06	 	  	$	3,218,459	 	  	OTC Call Option	  	June 23, 2020	
Pershing Square Holdings, Ltd.	 	July 25, 2018	  	Sell	  	 	92,363	 	  	$	67.51	 	  	$	76.06	 	  	$	6,235,426	 	  	OTC Call Option	  	June 23, 2020	
Pershing Square Holdings, Ltd.	 	August 9, 2018	  	Sell	  	 	236,000	 	  	$	68.03	 	  	$	76.06	 	  	$	16,055,080	 	  	OTC Call Option	  	June 23, 2020	
Pershing Square Holdings, Ltd.	 	August 10, 2018	  	Sell	  	 	264,000	 	  	$	68.63	 	  	$	76.06	 	  	$	18,118,320	 	  	OTC Call Option	  	June 23, 2020	
Pershing Square Holdings, Ltd.	 	August 13, 2018	  	Sell	  	 	278,835	 	  	$	69.16	 	  	$	76.06	 	  	$	19,284,229	 	  	OTC Call Option	  	June 23, 2020	
Pershing Square Holdings, Ltd.	 	August 14, 2018	  	Sell	  	 	380,766	 	  	$	70.04	 	  	$	76.06	 	  	$	26,668,851	 	  	OTC Call Option	  	June 23, 2020	
Pershing Square Holdings, Ltd.	 	August 15, 2018	  	Sell	  	 	110,869	 	  	$	69.79	 	  	$	76.06	 	  	$	7,737,825	 	  	OTC Call Option	  	June 23, 2020	
Pershing Square Holdings, Ltd.	 	August 16, 2018	  	Sell	  	 	230,456	 	  	$	70.49	 	  	$	76.06	 	  	$	16,244,843	 	  	OTC Call Option	  	June 23, 2020	
Pershing Square Holdings, Ltd.	 	August 17, 2018	  	Sell	  	 	237,232	 	  	$	71.69	 	  	$	76.06	 	  	$	17,007,281	 	  	OTC Call Option	  	June 23, 2020	
									
Pershing Square VI Master, L.P.	 	June 28, 2018	  	Buy	  	 	122,800	 	  	$	41.57	 	  	$	108.00	 	  	$	5,104,366	 	  	OTC Call Option	  	January 15, 2021	
									
Pershing Square Capital Management, L.P.	 	July 25, 2018	  	Buy	  	 	1	 	  	$	137.86	 	  	 	N/A	 	  	$	138	 	  	Common Stock	  	N/A