Primoris Services Corporation Notice of September 21, 2026 Application Deadline for Class Action Lawsuit - Contact Lewis Kahn, Esq. at Kahn Swick & Foti, LLC, Before Application Deadline

Kahn Swick & Foti, LLC ("KSF") and KSF partner, former Attorney General of Louisiana, Charles C. Foti, Jr., notifies investors in Primoris Services Corporation ("Primoris" or the "Company") (NYSE: PRIM) of a class action securities lawsuit. The lawsuit seeks to recover losses on behalf of investors of Primoris Services who were adversely affected if they purchased the Company's shares between August 5, 2025 and June 22, 2026, both dates inclusive (the "Class Period"). This action is pending in the United States District Court for the Northern District of Texas. Primoris investors should contact KSF Managing Partner Lewis Kahn toll-free at 1-833-538-3653 or via email ([email protected]), or visit https://www.ksfcounsel.com/cases/nyse-prim/ to learn more. According to the Complaint, Primoris and certain of its executives are charged with failing to disclose material information during the class period, violating federal securities laws. On June 22, 2026, following a series of prior negative disclosures, the Company disclosed that, following an internal review supported by an independent third-party industry expert, it had identified substantial challenges, cost overruns, and project delays affecting six renewable energy projects, and reduced its full-year 2026 Adjusted EPS guidance to $2.05-$2.60, lowered its Adjusted EBITDA guidance to $275 million-$325 million, projected that 2026 Renewables revenue would decline to approximately $2.1 billion, and announced the resignation of its Chief Operating Officer. On this news, the price of Primoris shares fell 22%, closing at $84.95 per share on June 23, 2026. The case is Boston Retirement System v. Primoris Services Corp., No. 26-cv-02416. If you invested in Primoris and suffered a loss during the relevant time frame, you have until September 21, 2026 to request that the Court appoint you as lead plaintiff; however, your ability to share in any recovery does not require that you serve as a lead plaintiff.