Filed by Exelon Corporation
(Commission File No. 1-16169)
Pursuant to Rule 425 under the Securities Act of 1933
and deemed filed pursuant to Rule 14a-12 of the Securities Exchange Act of 1934
Subject Company: Constellation Energy Group, Inc.
(Commission File No. 1-12869)
On May 24, 2011, Exelon distributed the attached newsletter article concerning the Wolf Hollow purchase and its relation to the proposed Constellation transaction to employees of its Exelon Generation subsidiary: