PWR: Material agreement · New financial obligation

Item 1.01 Entry into a Material Definitive Agreement. On August 6, 2026 (the “Closing Date”), Quanta Services, Inc. (the “Company”) issued (i) $500,000,000 aggregate principal amount of its 4.850% Senior Notes due 2029 (the “2029 Notes”), (ii) $750,000,000 aggregate principal amount of its 5.300% Senior Notes due 2033 (the “2033 Notes”) and (iii) $750,000,000 aggregate principal amount of its 5.550% Senior Notes due 2036 (the “2036 Notes,” and together with the 2029 Notes and the 2033 Notes, the “Notes”). The Notes were sold pursuant to an underwriting agreement, dated as of August 3, 2026 (the “Underwriting Agreement”), by and among the Company and 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, as previously reported on the Company’s Current Report on Form 8-K filed on August 4, 2026. The 2029 Notes were issued under the indenture, dated as of September 22, 2020, between the Company, as issuer, and U.S. Bank Trust Company, National Association (as successor in interest to U.S. Bank National Association), as trustee (the “Trustee”) (the “Base Indenture”), as supplemented and amended by the tenth supplemental indenture, dated as of August 6, 2026, between the Company and the Trustee (the “Tenth Supplemental Indenture”). Interest on the 2029 Notes will accrue at a rate of 4.850% per annum and is payable semi-annually, in arrears, on February 9 and August 9 of each year, commencing February 9, 2027. The 2029 Notes will mature on August 9, 2029, unless earlier redeemed. The 2033 Notes were issued under the Base Indenture, as supplemented and amended by the eleventh supplemental indenture, date