secwatch.observer — SEC 8-K summary ====================================== Issuer: STERLING INFRASTRUCTURE, INC. (STRL) CIK: 0000874238 Form: 8-K Filed at: 2026-06-09T13:06:04+00:00 Accession: 0000874238-26-000087 Event type: m_and_a Sentiment: positive Materiality: 0.75 Item codes: 7.01, 9.01 LLM model: deepseek-v4-flash:cloud@v2 Sterling closes acquisition of Stone Ridge Contracting; expands into Pacific Northwest -------------------------------------------------------------------------------- - Deal closed June 9, 2026; Stone Ridge joins Sterling's E-Infrastructure Solutions segment. - Purchase price includes cash and Sterling common stock plus earn-out based on 2031 EBITDA targets. - Stone Ridge expected to generate $180-200M revenue and mid-teens EBITDA margins in 2026. - Acquisition adds site development services across Idaho, Oregon, Washington, North Dakota, and Texas. - Sterling to update 2026 guidance at Q2 earnings to reflect partial-year Stone Ridge contribution. Source: EDGAR index: https://www.sec.gov/Archives/edgar/data/874238/000087423826000087/0000874238-26-000087-index.htm Primary doc: https://www.sec.gov/Archives/edgar/data/874238/000087423826000087/strl-20260609.htm HTML page: https://secwatch.observer/filing/0000874238-26-000087 License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer