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( Mark One ) UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 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 Commission File Number 001-39576 Cayman Islands ( State or other jurisdiction of incorporation ) FORM 10 - K Apollo Strategic Growth Capital ( Exact name of registrant as specified in its charter ) 9 West 57th Street , 43rd Floor New York , NY ( Address of principal executive offices ) Title of each class Units , each consisting of one Class A ordinary share , $ 0.00005 par value , and one - third of one warrant Class A ordinary shares Warrants 10019 ( Zip Code ) Registrant's telephone number , including area code : ( 212 ) 515-3200 Securities registered pursuant to Section 12 ( b ) of the Act : to Trading Symbol ( s ) APSG.U APSG APSG WS 98-0598290 ( IRS Employer Identification No. ) Name of each exchange on which registered New York Stock Exchange New York Stock Exchange New York Stock Exchange 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 NO X 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 X 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 definition of “ large accelerated filer ” , “ accelerated filer ” , and “ smaller reporting company " in Rule 12b - 2 of the Exchange Act .: