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

Company: MASTEC INC
Filing Date: 2025-02-28
Form: S-3ASR
Chunk 25
---
 in connection with the transfer or exchange (Section 305). If the applicable prospectus supplement refers to us designating any transfer agent for any series of debt securities, in addition to the trustee, we may at any time remove the transfer agent or approve a change in the location at which the transfer agent acts, except that we will be required to maintain a transfer agent in each place of payment for any series of debt securities. We may at any time designate additional transfer agents with respect to any series of debt securities (Section 1002). Neither we nor any trustee will be required to do any of the following:

| • |     | issue, register the transfer of or exchange debt securities of any series during a period beginning at the                                                                                                              
 opening of business 15 days before there is a selection of debt securities of that series to be redeemed and ending at the close of business on the day of mailing or publication of the relevant notice of redemption; |

| • |     | register the transfer of or exchange any debt security, or portion thereof, called for redemption, except the 
 unredeemed portion of any debt security being only partially redeemed;                                        |

| • |     | exchange any debt security in bearer form that is selected for redemption, except that a debt security in bearer                                                                                            
 form may be exchanged for a debt security in registered form of that series and like denomination, provided that the debt security in registered form must be simultaneously surrendered for redemption; or |

| • |     | issue or register the transfer or exchange of any debt security that has been surrendered for repayment at the                      
 option of the holder, except the portion, if any, of the debt security that will not be partially or entirely repaid (Section 305). |

Global Debt Securities The debt securities of a series may be issued in the form of one or more fully registered global securities that will be deposited with a depositary or with a custodian for a depositary identified in the prospectus supplement relating to the series and registered in the name of the depositary or its nominee. In this case, we will issue one or more global securities in a denomination or total denominations equal to the portion of the total principal amount 19

of outstanding registered debt securities of the series to be represented by the global security or securities. We expect that any global securities issued in the United States would be deposited
with The Depositary Trust Company, as depositary or its custodian. We may issue any global securities in fully registered form on a temporary or permanent basis. Unless and