Company: MTZ
Filing Date: 2025-02-28
Form Type: S-3ASR
Source: 0001193125-25-042499
Chunk: 4

Company: MASTEC INC
Filing Date: 2025-02-28
Form: S-3ASR
Chunk 4
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 the front cover of this prospectus. Our business, financial condition, results of operations and prospects may have changed since that date.

Neither we nor the selling security holders will use this prospectus to offer and sell securities unless it is accompanied by a supplement that more fully
describes the securities being offered and the terms of the offering.

1

FORWARD-LOOKING INFORMATION We are making this statement pursuant to the safe harbor provisions for forward-looking statements described in the Private Securities Litigation Reform Act of 1995. We make statements in this prospectus and in the documents that we incorporate by reference into this prospectus that are forward-looking. Forward-looking statements are predictions, projections and other statements about future events that are based on current expectations and assumptions and, as a result, are subject to risks and uncertainties. Forward-looking statements can be identified by the fact that they do not relate strictly to historical or current facts. The use of words such as “anticipate,” “estimate,” “could,” “should,” “may,” “might,” “plan,” “seek,” “expect,” “believe,” “intend,” “target,” “will,” “would,” “project,” “forecast,” “continue” and variations of these words and negatives thereof and similar expressions are intended to identify forward-looking statements. These forward-looking statements are based on our current expectations. These statements are not guarantees of future performance and are subject to risks, uncertainties, assumptions and other factors, some of which are beyond our control, are difficult to predict, and could cause actual results to differ materially from those expressed or forecasted in the forward-looking statements included or incorporated by reference in this prospectus. Additionally, many of these risks and uncertainties could be amplified by the effects of general economic and market conditions, including levels of inflation and market interest rates, geopolitical events, market uncertainty and/or volatility. They also include statements regarding:

| • |     | our future growth and profitability; |

| • |     | our competitive strengths; and |

| • |     | our business strategy and the trends we anticipate in the industries and economies in which we operate. |

We believe that these forward-looking statements are reasonable; however, you should not place undue reliance on any forward-looking statements, which are based on current expectations. Furthermore, forward-looking statements speak only as of the date they are made. If any of these risks or uncertainties materialize, or if any of our underlying assumptions are incorrect, our actual results may differ significantly from the results that we express in, or imply