MasTec — Apr 30, 2026 release

Marc Lewis, Investor Relations Coral Gables, Florida 33134 305-406-1815 Tel: 305-599-1800 marc.lewis@mastec.com www.mastec.com MasTec Reports First Quarter 2026 Results and Increases Full Year 2026 Financial Guidance First Quarter 2026 Highlights • Revenue of $3.8 billion, a first quarter record, increased 34% year-over-year • Record 18-month backlog as of March 31, 2026 of $20.3 billion increased $4.4 billion year-over-year and $1.4 billion from the prior quarter, led by significant 65% year-over-year growth in Clean Energy and Infrastructure • Diluted EPS of $0.77 and Adjusted Diluted EPS of $1.39, increased 516% and 174% year-over-year, respectively, and exceeded guidance expectations • GAAP Net Income of $69.7 million and Adjusted EBITDA of $283.6 million, both first quarter records, increased by 465% and 73% year-over-year, respectively, and exceeded guidance expectations • Increased Full Year Diluted EPS guidance to $6.77, a 33% year-over-year increase; Increased Full Year Adjusted Diluted EPS guidance to $8.79, a 34% year-over-year increase Coral Gables, FL, April 30, 2026 — MasTec, Inc. (NYSE: MTZ) today announced first quarter 2026 financial results and increased full year 2026 financial guidance. "We are pleased to report that first quarter financial performance posted strong double-digit year-over-year growth in both revenue and profitability, while also exceeding guidance in all respects as MasTec continues to execute on very strong customer demand across all of our end-markets," said Jose Mas, MasTec's Chief Executive Officer. "Our reported 34% revenue growth, including double-digit increases from all operating segments, was led by a 91% increase in Pipeline Infrastructure and a 45% increase in Clean Energy and Infrastructure. The strong demand and our operational discipline allowed us to significantly exceed first quarter guidance expectations. Our 18-month backlog included solid new bookings, up $4.4 billion compared to the prior year’s first quarter and up $1.4 billion sequentially from year-end." Mr. Mas added, "Our strong first quarter performance is due in large part to the efforts of the thousands of MasTec operating team members and their focus on delivering customer value