secwatch.observer — SEC 8-K summary ====================================== Issuer: Builders FirstSource, Inc. (BLDR) CIK: 0001316835 Form: 8-K Filed at: 2026-05-18T20:15:16+00:00 Accession: 0001316835-26-000004 Event type: leadership Sentiment: neutral Materiality: 0.40 Item codes: 5.02, 5.07, 7.01, 9.01 LLM model: deepseek-v4-flash:cloud@v2 BLDR announces COO and CHRO succession; Hiller named COO-Designate, O'Brien CHRO -------------------------------------------------------------------------------- - Mike Hiller appointed COO-Designate effective May 18, 2026, to succeed Steve Herron upon his retirement Dec. 31, 2026. - Steve Herron, COO since March 2023, retires after over 15 years with the company. - Hiller previously served as Chief Talent Officer and President – Central Division; over 25 years in building materials. - Coley O'Brien appointed Chief Human Resources Officer effective May 18, 2026; joins from Wendy's where he was Chief People Officer. - Annual meeting results: all director nominees elected, advisory say-on-pay approved, 2026 equity and ESPP plans approved. Source: EDGAR index: https://www.sec.gov/Archives/edgar/data/1316835/000131683526000004/0001316835-26-000004-index.htm Primary doc: https://www.sec.gov/Archives/edgar/data/1316835/000131683526000004/bldr-20260514.htm HTML page: https://secwatch.observer/filing/0001316835-26-000004 License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer