Company: MTZ
Filing Date: 2025-02-28
Form Type: S-3ASR
Source: 0001193125-25-042499
Chunk: 35

Company: MASTEC INC
Filing Date: 2025-02-28
Form: S-3ASR
Chunk 35
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 of directors, also make modifications and amendments to each indenture with the consent of the holders of a majority in principal amount of the outstanding debt securities of all affected series. Without the consent of each affected holder, however, no modification to either indenture may:

| • |     | change the stated maturity of the principal of, or any premium, make-whole amount or installment of principal of, 
 or interest on, any debt security;                                                                                |

| • |     | reduce the principal amount of, or the rate or amount of interest on, or any premium or make-whole amount payable                                                              
 on redemption of, or any additional amounts payable with respect to any debt security or change any obligation to pay additional amounts except as permitted by the indenture; |

| • |     | reduce the amount of principal of an original issue discount security or make-whole amount that would be due and                                                                                                        
 payable upon declaration of acceleration of the maturity of the original discount or other security, or would be provable in bankruptcy, or adversely affect any right of repayment of the holder of any debt security; |

| • |     | change the place of payment or the currency or currencies of payment of the principal of, and any premium, 
 make-whole amount, interest, or additional amounts on, any debt security;                                  |

| • |     | impair the right to institute suit for the enforcement of any payment on or with respect to any debt security; |

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| • |     | reduce the percentage of the holders of outstanding debt securities of any series necessary to modify or amend                                                                                         
 the indenture, to waive compliance with provisions of the indenture or defaults and their consequences under the indenture, or to reduce the quorum or voting requirements contained in the indenture; |

| • |     | make any change that adversely affects the right to convert or exchange any debt security other than as permitted                       
 by the indenture or decrease the conversion or exchange rate or increase the conversion or exchange price of any such debt security; or |

| • |     | modify any of the foregoing provisions or any of the provisions relating to the waiver of past defaults or                                                                                                                               
 covenants, except to increase the required percentage of holders necessary to effect that action or to provide that other provisions may not be modified or waived without the consent of the holder of the debt security (Section 902). |

Documentation Any modification or amendment of an indenture, whether effected with or without the consent of any holder, will be documented in a supplemental indenture