MasTec — Jul 24, 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 Second Quarter 2026 Results and Updates Full Year 2026 Financial Guidance Second Quarter 2026 Highlights • Revenue of $4.4 billion, a quarterly record, increased 23% year-over-year • Record 18-month backlog of $21.4 billion increased $4.9 billion year-over-year and $1.1 billion from the prior quarter, led by significant 58% year-over-year growth in Clean Energy and Infrastructure • Diluted EPS of $1.65 and Adjusted Diluted EPS of $2.22, both second quarter records, increased 51% and 49% year-over-year, respectively • GAAP Net Income of $145.7 million and Adjusted EBITDA of $384.2 million, both second quarter records, increased by 62% and 40% year-over-year, respectively • Updated Full Year Diluted EPS guidance to $6.20, a 22% year-over-year increase; Increased Full Year Adjusted Diluted EPS guidance to $9.30, a 42% year-over-year increase Coral Gables, FL, July 30, 2026 — MasTec, Inc. (NYSE: MTZ) today announced second quarter 2026 financial results and updated full year 2026 financial guidance. Jose R. Mas, MasTec’s CEO stated, “We once again reported a very strong quarter with excellent performance in revenue growth, margin expansion and backlog development. Strong year-over-year revenue growth of 23% was broad-based and solid execution drove margin expansion with our adjusted EBITDA margin improving 100 basis points. 18-month backlog was up $4.9 billion year-over-year, or 30%, and up $1.1 billion sequentially from the first quarter of this year to another record level.” Mr. Mas continued, “Last week, we closed on the acquisition of The Superior Group, a premier North American full-service electrical contractor with approximately 3,000 team members. Superior is a recognized leader in building data center infrastructure and also serves a diverse set of end markets including healthcare, entertainment and industrial. Our combined service offerings allow MasTec to provide more comprehensive solutions to our customers that can enhance speed, quality and certainty of execution. I once aga