X0508 4 2023-09-30 0001868275 Constellation Energy Corp CEG 0001164638 LAWLESS ROBERT J 1310 POINT STREET BALTIMORE MD 21231 true false Common Stock (Deferred Stock Units) 2023-09-30 4 A 0 391 108.64 A 47731 D Common Stock 1091 D Phantom Deferred Stock Units Common Stock 55186 55186 D Deferred Compensation - Phantom Share Equivalents 2023-09-30 4 A 0 745 109.08 A Common Stock 745 50591 D Balance includes approximately 122 shares acquired on September 8, 2023 through automatic dividend reinvestment. Phantom deferred stock units converted from the legacy Constellation Energy Group Inc. ("CEG") Deferred Compensation Plan for Non-employee Directors (the "Plan") that will be settled in cash on a 1-for-1 basis using the year-end price of CEG common stock in the year of termination of the reporting person's service. Balance updated to reflect approximately 142 additional stock units credited on September 8, 2023 through the dividend reinvestment feature of the Plan. Phantom share equivalents acquired in the reporting person's CEG stock fund account that is part of a multi-fund, non-qualified deferred compensation plan and will be settled in cash on a 1-for-1 basis upon termination of the reporting person's service. The balance of phantom share equivalents may fluctuate due to periodic changes in the fund composition. Balance also reflects approximately 129 share equivalents accrued on September 8, 2023 through automatic dividend reinvestment. /s/ Brian Buck, Attorney-in-Fact for Robert J. Lawless 2023-10-03