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UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 冈 ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Year Ended June 30 , 2021 FORM 10 - K OR TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission File Number 1-5397 AUTOMATIC DATA PROCESSING , INC . ( Exact name of registrant as specified in its charter ) Delaware ( State or other jurisdiction of incorporation or organization ) One ADP Boulevard Roseland , NJ ( Address of principal executive offices ) Securities registered pursuant to Section 12 ( b ) of the Act : Title of each class Common Stock , $ 0.10 Par Value ( voting ) Trading Symbol ( s ) Registrant's telephone number , including area code : ( 973 ) -974-5000 ADP ( IRS Employer Identification No. ) 22-1467904 07068 ( Zip Code ) Name of each exchange on which registered NASDAQ Global Select Market Securities registered pursuant to Section 12 ( g ) of the Act : None Indicate by check mark if the Registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act . Yes ý No □ Indicate by check mark if the Registrant is not required to file reports pursuant to Section 13 or 15 ( d ) of the Act . Yes No ý Indicate by check mark whether the Registrant ( 1 ) has filed all reports required to be filed by Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 during the preceding 12 months ( or for such shorter period that the Registrant was required to file such reports ) , and ( 2 ) has been subject to the filing requirements for the past 90 days . Yes ý No □ Accelerated filer Smaller reporting company Emerging growth company Indicate by check mark whether the Registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S - T ( §232.405 of this chapter ) during the preceding 12 months ( or for such shorter period that the Registrant was required to submit such files ) . Yes ý No Indicate by check mark whether the Registrant is a large accelerated filer , an accelerated filer , a non - accelerated filer , smaller reporting company , or an emerging growth company . See the definitions of " large accelerated filer , " " accelerated filer , " " smaller reporting company , " and " emerging growth company " in Rule 12b 2 of the Exchange Act . Large Accelerated Filer Non - accelerated filer If an emerging growth company , indicate by check mark if the Registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13 ( a ) of the Exchange Act . Portions of the Registrant's Proxy Statement for its 2021 Annual Meeting of Stockholders . Indicate by check mark whether the registrant has filed a report on and attestation to its management's assessment of the effectiveness of its internal control over financial reporting under Section 404 ( b ) of the Sarbanes - Oxley Act ( 15 U.S.C. 7262 ( b ) ) by the registered public accounting firm that prepared or issued its audit report . Indicate by check mark whether the registrant is a shell company ( as defined in Rule 12b - 2 of the Exchange Act ) . DOCUMENTS INCORPORATED BY REFERENCE Yes No The aggregate market value of the voting and non - voting common equity held by non - affiliates of the Registrant as of the last business day of the Registrant's most recently completed second fiscal quarter was approximately $ 75,329,818,310 . On July 30 , 2021 there were 423,080,556 shares of Common Stock outstanding . Part III