Every 424B that MasTec (MTZ) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A 424B covers the supplement that carries the terms of a priced offering, so if you follow MTZ and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full MTZ filings page.
MasTec, Inc. is issuing $650,000,000 of 5.850% Senior Notes due 2036. The notes are senior unsecured obligations of MasTec, rank pari passu with its other senior unsecured debt, are effectively subordinated to secured debt, and structurally subordinated to all subsidiary obligations.
Interest is paid semi-annually each March 30 and September 30, starting March 30, 2027, and the notes mature on September 30, 2036. MasTec may redeem the notes at a make-whole premium before June 30, 2036 and at par thereafter, and must offer to repurchase them at 101% upon a Change of Control Triggering Event.
Net proceeds of about $640.5 million are intended primarily to repay term loans under the 2025 Term Loan Facility, with any remainder for general corporate purposes, including potential repayment of Senior Credit Facility borrowings. Pro forma for this financing and recent borrowings for the Superior Group acquisition, MasTec would have had $4.2351 billion of total debt and $1.1385 billion of undrawn revolver capacity as of June 30, 2026.
MasTec, Inc., a large North American infrastructure engineering and construction company with about 37,000 employees and 780 locations as of June 30, 2026, plans a primary offering of senior unsecured notes under its effective shelf registration. The notes will rank equally with MasTec’s other senior unsecured debt, be effectively subordinated to secured debt, and be structurally subordinated to obligations of its subsidiaries.
MasTec recently acquired Electrical Specialists, Inc. (the Superior Group), a major electrical contractor focused on data center and critical electrical infrastructure, using $700 million from a new 2026 Term Loan Facility and about $600 million drawn under its Senior Credit Facility. As of June 30, 2026, on an as-adjusted basis, total debt would be about $4.04 billion, including $454.4 million of secured obligations, and subsidiaries would have about $4.0 billion of liabilities.
MasTec expects to use net proceeds from the notes mainly to repay outstanding borrowings under its $600 million 2025 Term Loan Facility, which bears interest at about 4.77%, and for general corporate purposes, potentially including additional repayment of Senior Credit Facility borrowings. The notes include an optional redemption feature and a requirement to repurchase at 101% of principal plus accrued interest if a defined Change of Control Triggering Event occurs. No exchange listing is expected, so liquidity will depend on over-the-counter trading.
MasTec, Inc. has filed a prospectus supplement to register 1,219,498 shares of common stock for resale by selling shareholders who received these shares as partial consideration for MasTec’s July 20, 2026 acquisition of Electrical Specialists, Inc., doing business as the Superior Group.
The shares may be sold from time to time in public or private transactions at market or negotiated prices, and MasTec will not receive any proceeds from these sales. The selling shareholders are subject to lock-up provisions that limit the percentage of shares they may transfer during successive six‑month periods up to the second anniversary of closing, with certain permitted transfer exceptions.
MasTec describes itself as a leading North American infrastructure engineering and construction company with approximately 37,000 employees and 780 locations as of June 30, 2026. Its common stock trades on the NYSE under the symbol MTZ and last traded at $312.44 per share on July 28, 2026.