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MTZ 424B5: Secondary offering

Filed with the SEC on · accession 0001193125-26-336922

MTZ filed a 424B5 (prospectus (offering)) with the SEC on Aug 6, 2026. MasTec, Inc. is offering an aggregate principal amount of senior notes due 20XX in an underwritten public offering. The stock moved -3.0% by the first close after the filing.

Summary of the filing

MasTec, Inc. is offering an aggregate principal amount of senior notes due 20XX in an underwritten public offering. The notes are unsecured and rank equally with existing senior unsecured debt.

For details, click here →How to read a 424B5 →

Key details

aggregate principal amount of senior notes$0
IssuerMasTec, Inc.
UnderwriterPNC Capital Markets LLC
UnderwriterTruist Securities
UnderwriterWells Fargo Securities
UnderwriterBofA Securities
UnderwriterJ.P. Morgan

How MTZ stock reacted

Close before

$266.75

Aug 5, 2026

First close after

-3.04%

$258.63

5 trading days

+5.38%

$281.11

Since filing

-34.73%

$174.10

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Frequently asked questions

What did MTZ file with the SEC on Aug 6, 2026?

MTZ filed a 424B5 (Secondary offering). MasTec, Inc. is offering an aggregate principal amount of senior notes due 20XX in an underwritten public offering. The notes are unsecured and rank equally with existing senior unsecured debt.

What does a secondary offering mean for MTZ stock?

New shares dilute existing holders and are often sold at a discount to the market price.

How do I read a 424B5?

The final terms of an offering of shares or bonds. Look at price, number of shares and the discount to the market price. Large offerings dilute existing shareholders.

Why are SEC filings important?

Public companies must tell the SEC about anything that can change their value — results, leadership changes, big deals, new shares, bankruptcy. Filings are the official source, often before the news. A 424B5 (prospectus (offering)): The final terms of an offering of shares or bonds.

How did MTZ stock react to this filing?

MTZ closed at $266.75 before the filing and $258.63 on Aug 6, 2026 (-3.04%). Five trading days later: $281.11 (+5.38%).

Other MTZ SEC filings

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