Company: MTZ
Filing Date: 2025-02-28
Form Type: S-3ASR
Source: 0001193125-25-042499
Chunk: 32

Company: MASTEC INC
Filing Date: 2025-02-28
Form: S-3ASR
Chunk 32
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 indenture that cannot be modified or amended without the 
 consent of the holders of each outstanding debt security affected by the default (Section 513).              |

The trustee is generally required to give notice to the holders of debt securities of each affected series within 90 days of a default actually known to the trustee unless the default has been cured or waived. The trustee may, however, withhold notice of default unless the default relates to:

| • |     | our failure to pay the principal of, and any premium, make-whole amount, interest or additional amounts on, any 
 debt security of that series; or                                                                                |

23

| • |     | any sinking fund installment for any debt securities of that series, |

| • |     | if the Responsible Officers of the trustee in good faith consider it to be in the interest of the holders of the 
 debt securities of that series (Sections 101 and 601).                                                           |

Each indenture provides that no holder of debt securities of any series may institute a proceeding with respect to the indenture or for any remedy under the indenture, unless the trustee fails to act for 60 days after it has received a written notice of a continuing event of default with respect to the debt securities of that series from such holder and a written request to institute proceedings in respect of an event of default from the holders of not less than 25% in principal amount of the outstanding debt securities of that series (except in respect of certain events of default related to bankruptcy or insolvency, which requires the written request of not less than 25% in principal amount of all outstanding debt securities under the applicable indenture), as well as an offer of indemnity satisfactory to the trustee; provided, that no direction inconsistent with such request has been given to the trustee during such 60-dayperiod by the holders of a majority in principal amount of outstanding debt securities of that series or the holders of a majority in principal amount of all outstanding debt securities under the applicable indenture, as applicable (Section 507). This provision will not prevent, however, any holder of debt securities from instituting suit for the enforcement of payment of the principal of, and any premium, make-whole amount, interest or additional amounts on, the debt securities at their respective due dates (Section 508). Subject to provisions in each indenture relating to the trustee’s duties in case of default, the trustee is not under an obligation to exercise ant of its rights or powers under the indenture at the request or direction of any holders of any series