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

Company: MASTEC INC
Filing Date: 2025-02-28
Form: S-3ASR
Chunk 3
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 |     |      | 35 |
| EXPERTS                                                    |     |      | 35 |
| WHERE YOU CAN FIND MORE INFORMATION                        |     |      | 36 |
| INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE            |     |      | 37 |

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IMPORTANT INFORMATION ABOUT THIS PROSPECTUS

This prospectus is part of a “shelf” registration statement that we filed with the United States Securities and Exchange Commission, or the SEC. By
using a shelf registration statement, we may sell any combination of the securities described in this prospectus from time to time in one or more offerings. The exhibits to our registration statement contain the full text of certain contracts and
other important documents we have summarized in this prospectus. Because these summaries may not contain all the information that you may find important in deciding whether to purchase the securities we offer, you should review the full text of
these documents. The registration statement and exhibits can be obtained from the SEC as indicated under the heading “Where You Can Find More Information.”

This prospectus provides you only with a general description of the securities we or the selling security holders may offer. Each time we sell securities, we
will provide a supplement to this prospectus that contains specific information about the terms of the securities offered. The supplement may also add, update or change information contained in this prospectus. Before purchasing any securities, you
should carefully read this prospectus, any supplement and any free writing prospectus related to the applicable securities that is prepared by us or on our behalf or that is otherwise authorized by us, together with the additional information
described under the heading “Incorporation of Certain Documents by Reference” found on page 37.

You should rely only on the information
contained or incorporated by reference in this prospectus, the supplement to this prospectus and any free writing prospectus related to the applicable securities that is prepared by us or on our behalf or that is otherwise authorized by us. Neither
we nor the selling security holders have authorized any other person to provide you with additional or different information. If anyone provides you with additional, different or inconsistent information, you should not rely on it. Neither we nor
the selling security holders will make an offer to sell these securities in any jurisdiction where the offer or sale is not permitted. You should assume that the information appearing in this prospectus, as well as information we have previously
filed with the SEC and incorporate herein by reference, is accurate only as of the date on