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UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 FORM 10 - K ( Mark one ) ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended January 30 , 2021 TRANSITION REPORT PURSUANT TO SECTION 13 or 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Delaware ( State or other jurisdiction of incorporation or organization ) Commission file number 0-14678 Ross Stores , Inc. ( Exact name of registrant as specified in its charter ) 5130 Hacienda Drive , Dublin , California ( Address of principal executive offices ) Title of each class Common stock , par value $ .01 Registrant's telephone number , including area code or Securities registered pursuant to Section 12 ( b ) of the Act : Trading symbol ROST ( I.R.S. Employer Identification No. ) 94-1390387 Securities registered pursuant to Section 12 ( g ) of the Act : Title of each class None 94568-7579 ( Zip Code ) ( 925 ) 965-4400 Name of each exchange on which registered NASDAQ Global Select Market 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 o 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 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 such filing requirements for the past 90 days . Yes ý No o 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 o Indicate by check mark whether the registrant is a large accelerated filer , an accelerated filer , a non - accelerated filer , a smaller reporting company , or emerging growth company . See 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 ý Accelerated filer o Non - accelerated filer o ( Do not check if a smaller reporting company ) Smaller reporting company Emerging growth company 1 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 . O 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 Act ) . Yes No The aggregate market value of the voting common stock held by non - affiliates of the Registrant as of August 1 , 2020 was $ 31,310,449,079 , based on the closing price on that date as reported by the NASDAQ Global Select Market® . Shares of voting stock held by each director and executive officer have been excluded in that such persons may be deemed to be affiliates . This determination of affiliate status is not necessarily a conclusive determination for other purposes . The number of shares of Common Stock , with $ .01 par value , outstanding on March 8 , 2021 was 356,523,349 . Documents incorporated by reference : Portions of the Proxy Statement for the Registrant's 2021 Annual Meeting of Stockholders , which will be filed on or before June 1 , 2021 , are incorporated herein by reference into Part III .