Notice to Investors Primoris Services Corporation 3Q 2025 Earnings November 4, 2025 2 3Q 2025 Highlights Record quarterly revenue, operating income and earnings Record Utilities backlog of nearly $6.6 billion driven by increase in demand, particularly power delivery Operating cash flow up over$100 million year-to-date compared to the prior year Raising full year 2025 earnings guidance This presentation contains certain financial measures that are not recognized under generally accepted accounting principle ...