MasTec, Inc. (NYSE: MTZ) today announced the appointment of Ati Modak as Vice President of Investor Relations, effective September 2026.

Mr. Modak joins MasTec from Goldman Sachs, where he served as Vice President, Equity Research, Energy Services, covering companies across the traditional and new energy sectors. Prior to joining Goldman Sachs in 2019, he worked at Citi. Mr. Modak received his Bachelor of Engineering degree from PDEU in India and his M.B.A. from Fordham University in New York.

José Mas, MasTec's Chief Executive Officer, noted, “We are pleased to welcome Ati to MasTec family. He brings a unique combination of deep knowledge of the infrastructure services sector, familiarity with the companies and markets in which we compete, and a broad perspective on the trends shaping our industry. His experience following the sector and engaging with investors will help us continue to communicate the strength of our business and the significant opportunities we see ahead.”

Paul DiMarco, MasTec's Executive Vice President and CFO, commented, “Having spent years covering our industry, Ati has developed a strong understanding of the key drivers investors need to evaluate and underwrite an investment thesis. I look forward to working closely with Ati as we continue to enhance our engagement with investors and grow shareholder value.”

About MasTec

MasTec, Inc. is a leading North American infrastructure engineering and construction company focused primarily on engineering, building, installation, maintenance and upgrade of communications, energy and utility and other infrastructure. MasTec primarily operates under four business segments including Communications, serving both wireless and wireline/fiber infrastructure; Power Delivery, serving primarily utility customers in transmission and distribution markets; Pipeline Infrastructure serving energy and other customers with installation and maintenance services primarily for natural gas pipeline and distribution infrastructure; and Clean Energy and Infrastructure, providing renewable energy engineering and construction services, as well as for heavy civil and other industrial infrastructure markets. Learn more at www.mastec.com.

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