Builders FirstSource Announces COO and CHRO Succession Plan

Chief Operating Officer Steve Herron to Retire

Mike Hiller Appointed Chief Operating Officer-Designate

Coley O’Brien Appointed Chief Human Resources Officer

Builders FirstSource, Inc. (NYSE: BLDR) announced today that as part of a planned leadership transition, Mike Hiller has been appointed Chief Operating Officer-Designate, succeeding Steve Herron, who will retire on December 31, 2026.