Company: MTZ
Filing Date: 2025-02-28
Form Type: S-3ASR
Source: 0001193125-25-042499
Chunk: 21

Company: MASTEC INC
Filing Date: 2025-02-28
Form: S-3ASR
Chunk 21
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 will be calculated, if other than that of a 360-day year consisting of twelve 30-day months;                                                                                                                           |

| • |     | the place or places where the principal of, and any premium, make-whole amount, interest or additional amounts                                                                                                                                         
 on, the debt securities will be payable, where the holders of the debt securities may surrender their debt securities for conversion, transfer or exchange, and where the holders may serve notices or demands to us in respect of the debt securities 
 and the indenture (Section 101);                                                                                                                                                                                                                       |

| • |     | whether the debt securities will be in registered or bearer form, and the terms and conditions relating to the                                                                                                                                         
 form, and, if in registered form, the denominations in which we will issue the debt securities if other than $1,000 or a multiple of $1,000 and, if in bearer form, the denominations in which we will issue the debt securities if other than $5,000; |

| • |     | the identity of the trustee of the debt securities of the series and, if other than the trustee, the identity of 
 each security registrar and/or paying agent for debt securities of the series;                                   |

| • |     | the period or periods during which, the price or prices, including any premium at which, the currency or                                        
 currencies in which, and the other terms and conditions upon which, we may redeem the debt securities at our option, if we have such an option; |

| • |     | any obligation that we have to redeem, repay or purchase debt securities under any sinking fund or similar                                                                                         
 provision or at the option of a holder of debt securities and the terms and conditions upon which we will redeem, repay or purchase all or a portion of the debt securities under that obligation; |

| • |     | the currency or currencies in which we will sell the debt securities and in which the debt securities will be 
 denominated and payable;                                                                                      |

| • |     | whether the amount of payment of principal of, and any premium, make-whole amount or interest on, the debt                                             
 securities of the series may be determined with reference to an index, formula or other method and the manner in which the amounts will be determined; |

| • |     | whether the principal of, and any premium, make-whole amount, additional amounts or interest on, the debt                                                                                                      
 securities of the series are to be payable, at our election or at the election of a holder of