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UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 ( 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 FORM 10 - K □ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from Delaware ( State or other jurisdiction of incorporation or organization ) Or c / o Corvex Management LP 667 Madison Avenue New York , New York ( Address of Principal Executive Offices ) Commission File No. 001-39482 CM Life Sciences , Inc. ( Exact name of registrant as specified in its charter ) Title of each class Units , each consisting of one share of Class A common stock , par value $ 0.0001 per share , and one - third of one redeemable warrant Class A common stock , par value $ 0.0001 per share Redeemable warrants , each whole warrant exercisable for one share of Class A common stock at an exercise price of $ 11.50 to 10065 ( Zip Code ) Registrant's telephone number , including area code : ( 212 ) 474-6745 Securities registered pursuant to Section 12 ( b ) of the Act : Trading Symbol ( s ) CMLFU CMLF CMLFW 85-1966622 ( I.R.S. Employer Identification No. ) Name of each exchange on which registered The Nasdaq Stock Market LLC The Nasdaq Stock Market LLC The Nasdaq Stock Market LLC 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 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