PWR: Material agreement · Company disclosure

Item 1.01 Entry into a Material Definitive Agreement. On August 3, 2026, Quanta Services, Inc. (the “Company”) entered into an underwriting agreement (the “Underwriting Agreement”) with BofA Securities, Inc., Wells Fargo Securities, LLC, J.P. Morgan Securities LLC, PNC Capital Markets LLC and Truist Securities, Inc., as representatives of the several underwriters named in Schedule A to the Underwriting Agreement (the “Underwriters”), with respect to the issuance and sale in an underwritten public offering (the “Offering”) by the Company of (i) $500,000,000 aggregate principal amount of the Company’s 4.850% Senior Notes due 2029 (the “2029 Notes”), (ii) $750,000,000 aggregate principal amount of the Company’s 5.300% Senior Notes due 2033 (the “2033 Notes”) and (iii) $750,000,000 aggregate principal amount of the Company’s 5.550% Senior Notes due 2036 (together with the 2029 Notes and the 2033 Notes, the “Notes”). The material terms of the Offering are described in the prospectus supplement dated August 3, 2026, as filed by the Company with the Securities and Exchange Commission (the “Commission”). The offer and sale of the Notes is registered with the Commission pursuant to the Company’s Registration Statement on Form S-3 (File No. 333-281209) that was filed with the Commission on August 2, 2024. Subject to the satisfaction of customary conditions to closing, the transactions contemplated by the Underwriting Agreement will be consummated on August 6, 2026. The Underwriting Agreement contains customary indemnification and contribution provisions whereby the Company, on the one hand, and the Underwriters, on the other hand, have agreed to indemnify each other against certain liabilities, including liabilities under the Securities Act. The foregoing description of the Under