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UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON , DC 20549 ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 . For the fiscal year ended December 31 , 2020 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 001-38872 FORM 10 - K Delaware ( State or Other Jurisdiction of Incorporation or Organization ) Pinterest , Inc. ( Exact Name of Registrant as Specified in Its Charter ) 505 Brannan Street San Francisco , California ( Address of Principal Executive Offices , including zip code ) Title of each class Class A Common Stock , $ 0.00001 par value Large accelerated filer Non - accelerated filer ( I.R.S. Employer Identification No. ) ( 415 ) 762-7100 Registrant's Telephone Number , Including Area Code Securities registered pursuant to Section 12 ( b ) of the Act : Trading Symbol PINS 26-3607129 Securities registered pursuant to Section 12 ( g ) of the Act : None 94107 ( Zip Code ) Name of each exchange on which registered New York Stock Exchange Indicate by check mark whether 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 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 No 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 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 ) . Yes No The aggregate market value of the voting and non - voting common equity held by non - affiliates of the registrant , based on the closing price of a share of the registrant's common stock on June 30 , 2020 as reported by the New York Stock Exchange on such date was approximately $ 9.4 billion . As of January 29 , 2021 , there were 532,423,430 shares of the Registrant's Class A common stock , $ .00001 par value per share , outstanding , and 96,091,207 shares of the Registrant's Class B common stock outstanding . Documents Incorporated by Reference Portions of the registrant's definitive Proxy Statement for the 2021 Annual Meeting of Stockholders are incorporated by reference into Part III of this Annual Report on Form 10 - K where indicated . Such Definitive Proxy Statement will be filed with the Securities and Exchange Commission within 120 days after the end of the registrant's fiscal year ended December 31 , 2020 .