MASTEC INC (MTZ) SEC Filings, Jul-Aug 2026

MasTec, Inc. insider Jose Ramon Mas and affiliated entities report beneficial ownership of 6,185,090 MasTec common shares, representing 7.7% of the class, based on 80,304,948 shares outstanding as of July 27, 2026. The holdings are spread across personal ownership, two Mas-branded holding LLCs, two irrevocable family trusts, Mas Equity Partners III, LLC, and the Mas Family Foundation. Mas disclaims beneficial ownership of shares held by the trusts and the foundation except to the extent of any pecuniary interest.

The amendment centers on a Prepaid Forward Contract first entered into in 2019 and now further amended on August 10, 2026 through a Fourth Amendment with Bank of America, N.A. Mas has pledged 340,794 shares as collateral under this contract but retains voting rights and beneficial ownership until settlement. The contract allows settlement in either shares or cash at Mas’s option on designated valuation dates in 2027 and 2028.

The amendment revises the floor and cap prices governing how many pledged shares, if any, may ultimately be delivered. For Tranche 1, the floor price is $246.5096 and the cap price is $350.5914; for Tranche 2, the floor price is $157.3441 and the cap price is $243.0093. The number of shares delivered for each component depends on the volume weighted average price of MasTec stock on each valuation date, with formulas that can require all pledged shares, a fraction of them, or a capped amount to be delivered, or the economic equivalent in cash.

MasTec, Inc. insider Jorge Mas and affiliated entities report updated beneficial ownership of 11,872,111 MasTec common shares, representing 14.8% of the outstanding stock based on 80,304,948 shares outstanding as of July 27, 2026. The filing describes that 5,665,484 shares are held by Jorge Mas Holdings I, LLC (JM Holdings I), with additional shares held through family trusts, investment entities, a family foundation, and 4,556,686 shares held directly by Jorge Mas.

The amendment’s main purpose is to report JM Holdings I’s entry on August 10, 2026 into a Fourth Amendment to a previously disclosed prepaid variable forward sale contract with an unaffiliated party. JM Holdings I has pledged 1,099,335 shares as collateral under this Prepaid Forward Contract, which may settle in cash or shares on Valuation Dates in 2027 and 2028 across two tranches of 15 components each. The Fourth Amendment resets the Floor Prices and Cap Prices for each Tranche 1 component based on the volume weighted average price of MasTec stock over a specified period ended August 11, 2026, while JM Holdings I currently retains voting rights and beneficial ownership of the pledged shares.

MasTec, Inc. entered into an underwriting agreement to issue and sell $650,000,000 aggregate principal amount of 5.850% Senior Notes due 2036. The notes were priced at 99.656%, will pay interest semi-annually at 5.850%, and will mature on September 30, 2036. MasTec expects to close the offering on August 17, 2026, subject to customary closing conditions, and has registered the notes under an effective shelf registration statement on Form S-3.

MasTec intends to use the net proceeds primarily to repay some or all of its $600 million term loan maturing on June 26, 2028 and to pay related fees and expenses, with any remaining proceeds for general corporate purposes, including potential repayment of borrowings under its senior unsecured credit facility. The notes will be MasTec’s senior unsecured obligations, ranking equal in right of payment with existing and future senior unsecured indebtedness, effectively subordinated to secured indebtedness to the extent of collateral value, and structurally subordinated to liabilities of its subsidiaries.

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.

A SEC Form 3 for MasTec, Inc. (MTZ) identifies Alex Spiro as a director and reports no insider transactions or derivative positions, with all transaction counts at zero. A remark notes an exhibit titled Limited Power of Attorney associated with this insider ownership report.

MasTec, Inc. filed a report dated July 31, 2026, stating that it is being submitted solely to provide additional exhibits. The company is adding Exhibit 5.1, an opinion of Holland & Knight LLP, and Exhibit 23.1, a related consent included within Exhibit 5.1, plus Exhibit 104 for the Inline XBRL-formatted cover page.

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.

MasTec reported a very strong second quarter of 2026, with revenue of $4.4 billion, up 23% year over year, and GAAP net income of $145.7 million. Diluted EPS was $1.65 and adjusted diluted EPS $2.22, both second‑quarter records, supported by a 100‑basis‑point improvement in adjusted EBITDA margin.

Performance was broad‑based across segments, with particularly strong growth in Clean Energy and Infrastructure and Pipeline Infrastructure. The company’s 18‑month backlog reached a record $21.4 billion, up $4.9 billion, or 30%, year over year. Operating cash flow for the first half was $120.3 million, though free cash flow was slightly negative after capital spending.

MasTec updated 2026 guidance, targeting full‑year revenue of $18.2 billion, GAAP diluted EPS of $6.20 and adjusted diluted EPS of $9.30. The company also closed the acquisition of The Superior Group, a data‑center‑focused electrical contractor, and appointed Alexander Benjamin Spiro as a Class III director, serving through the 2027 annual meeting and joining the Compensation Committee.