When Exelon Corp. absorbed Constellation Energy Group Inc. in 2012, the legal department spread word of its values with Constellation colleagues whose department had lacked internal diversity or pro bono programs. The $7.9 billion deal created a $24.9 billion energy company with about 26,000 employees.

“We worked to implement those programs and share those programs,” across the now 110-lawyer department, Exelon Corp. senior vice president and general counsel Darryl Bradford said. The focus applied both to internal work and in hiring outside counsel, Bradford said.