Quanta Services declares $0.08 quarterly dividend and $500M stock buyback program

The advisory resolution approving the Company’s executive compensation as set forth in the 2023 Proxy Statement was approved with the vote totals, rounded to the nearest whole share, as set forth in the table below: Number of Votes Cast For Number of Votes Cast Against Abstentions Broker Non-Votes 107,486,060 11,460,767 215,010 9,463,781

The following ten director nominees were elected as directors of the Company to serve one-year terms expiring at the 2024 Annual Meeting of Stockholders. The vote totals for each director, rounded to the nearest whole share, are set forth in the table below: Nominee: Number of Votes Cast For Number of Votes Cast Against Abstentions Broker Non-Votes Earl C. Austin, Jr. 118,225,626 865,154 71,058 9,463,781 Doyle N. Beneby 114,185,830 4,911,601 64,407 9,463,781 Vincent D. Foster 110,660,399 8,425,628 75,810 9,463,781 Bernard Fried 112,176,410 6,909,997 75,430 9,463,781 Worthing F. Jackman 109,991,445 9,094,589 75,803 9,463,781 Holli C. Ladhani 118,278,119 820,754 62,965 9,463,781 David M. McClanahan 115,140,823 3,957,701 63,313 9,463,781 R. Scott Rowe 118,051,385 1,046,234 64,219 9,463,781 Margaret B. Shannon 115,258,346 3,836,616 66,876 9,463,781 Martha B. Wyrsch 98,842,396 20,247,644 71,798 9,463,781

The appointment of PricewaterhouseCoopers LLP as the Company’s independent registered public accounting firm for fiscal year 2023 was ratified with the vote totals, rounded to the nearest whole share, as set forth in the table below: Number of Votes Cast For Number of Votes Cast Against Abstentions Broker Non-Votes 120,212,403 8,366,400 46,816 —

In the advisory vote on the frequency of future stockholder advisory votes on the Company’s executive compensation, votes were cast in favor of holding future advisory votes every year, every two years or every three years as set forth in the table below: 1 year 2 years 3 years Abstentions Broker Non-Votes 116,504,088 86,312 2,496,300 75,137 9,463,781