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Table of Contents ( Mark one ) UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON , D.C. 20549 FORM 10 - K ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE FISCAL YEAR ENDED SEPTEMBER 30 , 2021 OR TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from Large accelerated filer Non - accelerated filer to Commission file number 0-52423 AECOM ( Exact name of Registrant as specified in its charter ) Delaware State or Other Jurisdiction Of Incorporation or Organization 13355 Noel Road Dallas , Texas Address of Principal Executive Offices 61-1088522 I.R.S. Employer Identification Number ( 972 ) 788-1000 Registrant's Telephone Number , Including Area Code Former Name , Former Address and Former Fiscal Year , if Changed Since Last Report Securities registered pursuant to Section 12 ( b ) of the Act : Trading Symbol ( s ) ACM Title of each class Common Stock , $ 0.01 par value Indicate by check mark if the registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act . Yes No Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15 ( d ) of the Act . Yes - No 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 such filing requirements for the past 90 days . » Yes No 75240 Zip Code Indicate by che mark whet the registrant has sub tted 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 No Name of each exchange on which registered New York Stock Exchange Indicate by check mark whether the registrant is a large accelerated filer , an accelerated filer , a non - accelerated filer , a 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 . Accelerated filer Smaller reporting company Emerging growth company 0 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 . □ Indicate by check mark whether the registrant is a shell company ( as defined in Rule 12b - 2 of the Act ) . Yes No The aggregate market value of registrant's common stock held by non - affiliates on April 2 , 2021 ( the last business day of the registrant's most recently completed second fiscal quarter ) , based upon the closing price of a share of the registrant's common stock on such date as reported on the New York Stock Exchange was approximately $ 9.4 billion . Number of shares of the registrant's common stock outstanding as of November 11 , 2021 : 142,202,244 DOCUMENTS INCORPORATED BY REFERENCE Part III incorporates information by reference from the registrant's definitive proxy statement for the 2022 Annual Meeting of Stockholders , to be filed within 120 days of the registrant's fiscal 2021 year end .