MASTEC INC (MTZ) SEC Filings, Aug-Sep 2025

MasTec, Inc. (MTZ) Form 144 filing reports a proposed sale of 3,000 common shares through Raymond James & Associates on approximately 09/11/2025 with an aggregate market value of $571,170. The shares were originally acquired on 03/19/2015 as director compensation and the filing indicates no securities sold by the same person in the past three months. The notice includes the required representation that the seller is not aware of undisclosed material adverse information about the issuer.

MasTec, Inc. disclosed a temporary blackout period for its 401(k) Retirement Plan as it changes recordkeeper services from Bank of America/Merrill Lynch to Schwab Retirement Plan Services, Inc., effective October 1, 2025. Because of this transition, plan participants and beneficiaries will not be able to take loans or distributions, make rollovers, change investment elections or contribution rates, or request fund transfers, including with respect to MasTec common stock, during the blackout window.

The blackout is expected to begin at 4:00 p.m. Eastern Time on September 22, 2025 and end during the week of October 19, 2025. MasTec also notified its directors and executive officers that, during this blackout period, they are prohibited from directly or indirectly buying, selling, or otherwise transferring MasTec common stock acquired in connection with their service or employment. A copy of this blackout notice is filed as an exhibit, and shareholders can request the actual blackout dates from the company’s 401(k) plan administrator.

MasTec, Inc. insiders led by Jorge Mas report aggregate beneficial ownership of 11,872,231 shares, representing 15.0% of the outstanding common stock based on 78,907,954 shares. The filing amends a previously disclosed prepaid variable forward contract: on August 18, 2025 JM Holdings I entered a Third Amendment that re-set Floor and Cap Prices for Tranche 2 components using VWAP through August 21, 2025 and reduced the number of pledged shares under the contract to 1,099,335 shares. The contract allows settlement in cash or shares on valuation dates in August or September of 2026 or 2027, and JM Holdings I retains voting rights in the pledged shares during the pledge term.

MasTec Schedule 13D/A update: This amendment reports that Jose Ramon Mas and affiliated entities together beneficially own 6,186,877 shares, representing 7.8% of MasTec (based on 78,907,954 shares outstanding). The filing discloses an August 18, 2025 amendment to a prepaid variable forward sale contract that revised the Floor and Cap prices for Tranche 2 components, adjusted share counts and reduced the number of shares pledged under the contract to 340,794.

The prepaid forward permits settlement in cash or shares on specified valuation dates in August or September 2026 or 2027, with delivery formulas tied to the VWAP on those dates and defined Tranche 1 and Tranche 2 Floor and Cap Prices. The stated purpose of the original prepaid forward was to provide funds for investment in the Miami Major League Soccer franchise. The reporting persons retain voting rights in the pledged shares during the pledge term.

Jorge Mas, via Jorge Mas Holdings I, LLC ("JM Holdings I"), filed a Form 4 reporting amendments to a prepaid variable forward sale contract covering MasTec, Inc. (MTZ) common stock. The Amended Agreement reduced the number of pledged shares from 1,176,933 to 1,099,335 and preserves JM Holdings I's ownership and voting rights in those pledged shares. The amendment, effective based on VWAP measured to August 21, 2025, adjusts Floor and Cap Prices and allows settlement, at JM Holdings I's option, in cash or shares. Each component may be exercisable/settled between August 17, 2026 and September 3, 2027. The filing clarifies the mechanics for deliverable shares depending on valuation prices.

Jose Ramon Mas, CEO and director of MasTec, Inc. (MTZ), reported amendments to a prepaid variable forward sale contract securing previously pledged shares. The agreement was amended to adjust valuation terms and reduce pledged shares from 364,850 to 340,794 shares, with settlement exercisable in cash or common stock. The pledged shares are split into two tranches with 15 components each and each component exercisable/expiring between Aug 17, 2026 and Sep 3, 2027. The reporting person retains ownership and voting rights in all pledged shares during the pledge term.

MasTec, Inc. (MTZ) director Ava L. Parker reported two transactions on 08/15/2025. She was issued 295 shares of common stock as part of her quarterly director compensation at no cash price, with 147 of those shares deferred under the company's Deferred Fee Plan for Directors. Separately, 33 shares were withheld by the issuer to satisfy tax withholding upon vesting of restricted stock for an aggregate beneficial ownership of 4,869 shares following the transactions. The Form 4 was signed on 08/19/2025.

Robert C. Campbell, a director of MasTec, Inc. (MTZ), reported an acquisition of 232 shares of the company’s common stock on 08/15/2025. The Form 4 shows 38,277 shares beneficially owned by Mr. Campbell following the reported transaction. The filing lists a price of $0 for the transaction and is signed on 08/19/2025.

Javier Alberto Palomarez, a director of MasTec, Inc. (MTZ), reported equity transactions on 08/15/2025. The filing shows an acquisition of 232 shares of common stock recorded as an acquisition at $0, and a related disposition of 52 shares at $178 each. After these transactions he beneficially owned 11,255 shares (the filing also shows 11,307 before the disposition). The filing explains the 52 shares were withheld by the issuer to pay taxes due upon vesting of restricted stock. The Form 4 is signed on behalf of Mr. Palomarez on 08/19/2025.