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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 TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to FORM 10 - K " 001-35542 ( Commission File Number ) Customers Bancorp , Inc. Pennsylvania ( State or other jurisdiction of incorporation or organization ) ( Exact name of registrant as specified in its charter ) 701 Reading Avenue West Reading PA 19611 ( Address of principal executive offices ) ( 610 ) 933-2000 ( Registrant's telephone number , including area code ) Title of Each Class Voting Common Stock , par value $ 1.00 per share Fixed - to - Floating Rate Non - Cumulative Perpetual Preferred Stock , Series C , par value $ 1.00 per share Fixed - to - Floating Rate Non - Cumulative Perpetual Preferred Stock , Series D , par value $ 1.00 per share Fixed - to - Floating Rate Non - Cumulative Perpetual Preferred Stock , Series E , par value $ 1.00 per share Fixed - to - Floating Rate Non - Cumulative Perpetual Preferred Stock , Series F , par value $ 1.00 per share 5.375 % Subordinated Notes due 2034 Securities registered pursuant to Section 12 ( b ) of the Act : Trading Symbols CUBI CUBI / PC CUBI / PD 27-2290659 ( I.R.S. Employer Identification Number ) CUBI / PE Name of Each Exchange on which Registered New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange CUBI / PF CUBB Securities registered pursuant to Section 12 ( g ) of the Act : None Indicate by check mark whether the registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act . Yes x No Indicate by check mark whether the registrant is not required to file reports pursuant to Section 13 or Section 15 ( d ) of the Act . Yes No X