X0306 4 2021-12-01 false 0001488813 Customers Bancorp, Inc. CUBI 0001222371 SIDHU JAY S 701 READING AVENUE WEST READING PA 19611 true true false false Chairman & CEO Common Stock 2021-12-01 4 M false 50000.00 15.23 A 1474912.00 D Common Stock 2021-12-01 4 S false 50000.00 57.9767 D 1424912.00 D Employee Stock Option (right to buy) 15.23 2021-12-01 4 M false 50000.00 0.00 D 2018-05-21 2023-05-21 Common Stock 50000.00 299701.00 D Includes 134,898 Restricted Stock Units. Includes 7,663 shares acquired pursuant to Customers Bancorp, Inc.'s Employee Stock Purchase Plan. This transaction was executed in multiple trades at prices ranging from $56.62 to $59.36. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transition was affected. The reporting person's form 4s previously filed inadvertently identified the number of derivative securities beneficially owned following the reported transaction as zero (0), rather than 299,701 employee stock options owned following the reported transaction. /s/ Jay S. Sidhu by Andrew Sachs under Power of Attorney 2021-12-02