Page 1

Delaware ( State or other jurisdiction of incorporation or organization ) ( Mark One ) ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( D ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31 , 2020 TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( D ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 1603 Orrington Avenue , 13th Floor Evanston , Illinois ( Address of principal executive offices ) FORM 10 - K STAR PEAK CORP II ( Exact name of registrant as specified in its charter ) Title of Each Class : Units , each consisting of one share of Class A common stock , $ 0.0001 par value , and one - fourth of one warrant 001-39835 ( Commission File Number ) 60201 ( Zip Code ) Registrant's telephone number , including area code : ( 847 ) 905-4500 Not Applicable ( Former name or former address , if changed since last report ) Securities registered pursuant to Section 12 ( b ) of the Act : Shares of Class A common stock included as part of the units Warrants included as part of the units , each whole warrant exercisable for one share of Class A common stock at an exercise price of $ 11.50 Large accelerated filer Non - accelerated filer □ 区 Trading Symbol : STPC.U STPC 85-3374823 ( I.R.S. Employer Identification Number ) STPC WS Name of Each Exchange on Which Registered : The New York Stock Exchange The 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 - Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15 ( d ) of the Exchange Act . Yes No > The New York Stock Exchange 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 and post 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 definition 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 XXI