X0609 4 2026-03-13 false 0001488813 Customers Bancorp, Inc. CUBI 0001749894 Sidhu Samvir S. false 701 READING AVENUE WEST READING PA 19611 true true false false CEO false Common Stock 2026-03-13 2026-03-13 4 A false 12306.00 64.72 A 534020.00 D Common Stock 2026-04-08 2026-04-08 4 A false 5285.00 73.80 A 539305.00 D Common Stock 745.00 I Trust Common Stock 745.00 I Trust Common Stock 745.00 I Trust Grant of Restricted Stock Units was contingent upon shareholder approval of an amendment to the Issuer's 2019 Stock Incentive Plan, which approval was obtained on May 26, 2026. Includes 258,116 Restricted Stock Units. Includes 263,401 Restricted Stock Units. Irrevocable Trust FBO Lian Sidhu. Irrevocable Trust FBO Ziya Sidhu. Irrevocable Trust FBO Kaira Sidhu. /s/ Samvir Sidhu by Andrew Sachs under Power of Attorney 2026-05-28