MasTec, Inc. (NYSE:MTZ) will release its first quarter financial results on Thursday, April 30, 2026 after the market close. In addition, MasTec's senior management will host a webcast to review these results on Friday, May 1, 2026, at 9:00 a.m. ET.

The event will be broadcast live and can be accessed through the MasTec Investor Relations website at https://investors.mastec.com/events-presentations/events. A replay link, along with the earnings release and supporting materials, will also be posted to the website.

About MasTec: MasTec, Inc. is a leading North American infrastructure engineering and construction company operating across a range of end markets. MasTec's primary activities include the engineering, building, installation, maintenance and upgrade of communications, energy and utility and other infrastructure, such as: power delivery services, including transmission and distribution, wireless, wireline/fiber and customer fulfillment activities; power generation, primarily from clean energy and renewable sources; pipeline infrastructure, including natural gas pipeline and distribution infrastructure; heavy civil; and industrial infrastructure. MasTec's customers are primarily in these industries. MasTec's corporate website can be accessed at www.mastec.com. MasTec's website should be considered as a recognized channel of distribution, and MasTec may periodically post important, or supplemental, information regarding contracts, awards or other related news and webcasts on the Investors tab of the website.

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Marc Lewis, Investor Relations

305-406-1815

marc.lewis@mastec.com