Company: MTZ
Filing Date: 2025-02-28
Form Type: S-3ASR
Source: 0001193125-25-042499
Chunk: 46

Company: MASTEC INC
Filing Date: 2025-02-28
Form: S-3ASR
Chunk 46
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ERENCE The SEC allows us to “incorporate by reference” some of the documents we file with it into this prospectus, which means:

| • |     | we can disclose important information to you by referring you to those documents; |

| • |     | the information incorporated by reference is considered to be part of this prospectus; and |

| • |     | later information that we file with the SEC will automatically update and supersede this information. |

We incorporate by reference the documents listed below:

| • |     | the description of our common stock contained in Form                                                                                                    
 8-A filed with the SEC on February 10, 1997 (File No. 001-08106) and any amendments to such Registration Statement filed subsequently thereto, including 
 all amendments or reports filed for the purpose of updating such description.                                                                            |

In addition, all documents subsequently filed by us pursuant to Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act (not including any information furnished under Item 2.02, 7.01 or 9.01 of Form 8-Kand any other information that is identified as “furnished” rather than filed, which information is not incorporated by reference herein) prior to the termination of the offering, will be deemed to be incorporated herein by reference and to be a part of this registration statement from the date of filing of such documents. Any statement contained in a document incorporated herein by reference will be deemed to be modified or superseded for purposes of this registration statement to the extent that a statement contained herein, or in a subsequently filed document incorporated herein by reference, modifies or supersedes the statement. Any statement modified or superseded will not be deemed, except as modified or superseded, to constitute a part of this registration statement. We will provide without charge to each person, including any beneficial owner, to whom a prospectus is delivered, upon written or oral request of that person, a copy of any and all of the information that has been incorporated by reference in this prospectus but not delivered with this prospectus (excluding exhibits unless specifically incorporated by reference into those documents). Please direct requests to us at the following address: MasTec, Inc. 800 S. Douglas Road, 12th Floor Coral Gables, Florida 33134 Attention: Alberto de Cardenas (305) 599-1800 37

PART II INFORMATION NOT REQUIRED IN PROSPECTUS

| Item 14. | Other Expenses