EXPERTISE PROJECTS ABOUT INVESTORS SUSTAINABILITY NEWS CAREERS CONTACT INVEST Increase revenue share and value. Our ever-expanding industry knowledge and commitment to excellence have positioned MasTec as a leading industry force. FINANCIAL REPORTING INVESTOR NEWS EVENTS & PRESENTATIONS CORPORATE GOVERNANCE INFORMATION REQUEST Invest With our high-visibility revenue base and extensive project experience, MasTec has continued to generate strong financial performance, even through the recent economic decline. As our financial performance accelerates, our customers continue to rely on MasTec's financial strength and management discipline to get their projects done on time and on budget. Proven Performance Double Digit Revenue CAGR Proven Performance Strong Adjusted EBITDA CAGR(1)(2)(3) Business Profile MasTec, Inc. is a leading national infrastructure construction company operating mainly throughout the United States across a range of industries. The Company’s activities include the building, installation, maintenance and upgrade of energy, communication and utility infrastructure, including but not limited to: electrical utility transmission and distribution, wind farms, solar farms, other renewable energy, natural gas and petroleum pipeline infrastructure, wireless, wireline, satellite communication, industrial infrastructure and water and sewer systems. MasTec’s customers are in the following industries: utilities (including wind farms, solar farms and other renewable energy, natural gas gathering systems and pipeline infrastructure), communications (including wired and wireless telephony and satellite television) and government (including water, sewer and other utility and communications work on military bases). Primary Contact J. Marc Lewis Vice President, Investor Relations 1.305.406.1815 marc.lewis@mastec.com 800 S. Douglas Road, 12th Floor Coral Gables, Florida 33134 Transfer Agent For questions and action regarding stock ownership and registration, stock certificates, name changes and estate issues. American Stock Transfer & Trust Company 1.800.937.5449 Toll Free 1.718.921.8520 Outside U.S. info@amstock.com Operations Center 6201 15th Avenue Brooklyn, NY 11219 News 11/23/2021 MasTec Senior Management to Present at the Credit Suisse, UBS and Barclays Virtual Investor Conferences in December 11/8/2021 MasTec Senior Management to Present at the 2021 Baird Global Industrial Investor Conference MORE NEWS Investor Relations $97.72 MasTec, Inc. MTZ -0.28 HIGH 98.95 LOW 96.51 VOLUME 295,390 11/26/2021 11:17:27 PM FULL CHART Disclaimers The information in this website or referred to herein could constitute forward-looking statements as defined in the Private Securities Litigation Reform Act of 1995, such as statements regarding MasTec's future growth and profitability, growth strategy and anticipated trends in the industries and economies in which MasTec operates. These forward-looking statements are based on MasTec's current expectations and are subject to a number of risks, uncertainties and assumptions. Should one or more of these risks or uncertainties materialize, or should the underlying assumptions prove incorrect, actual results may differ significantly from results expressed or implied in any forward-looking statements that we make in this website or the materials referred to herein. These risks, uncertainties and assumptions are detailed in documents filed by MasTec with the Securities and Exchange Commission. MasTec does not undertake to update any statements made in this website. Historical Information May Not be Updated Corporate information posted to this website is as of the date posted and for historical purposes only. The Company does not update, and users should not expect, that any informational item posted herein will be updated in any way for subsequent events or changes in circumstances. Other Sites You may be directed to other websites or sources of information that are beyond MasTec's control. MasTec makes no representation as to the accuracy or appropriateness of any other website or source of information and is not responsible for the content of any such other website or source. These other websites and sources of information may collect data or solicit personal information and distribute that information. MasTec cannot guarantee the privacy or confidentiality of any information you disclose on-line; you make such disclosures at your own risk. 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