de Cardenas Alberto 4

What Happened Alberto de Cardenas, EVP and General Counsel of MasTec Inc. (MTZ), had 4,838 shares disposed of on March 10, 2026 as shares were withheld by the company to pay taxes due upon vesting of restricted stock. The withholding occurred at a per-share price of $297.81, for a total value of approximately $1,440,805. This was a tax-withholding disposition (code F), not an open-market sale.

Key Details

• Transaction date: 2026-03-10; Filing date: 2026-03-12 (Form 4 accession 0000015615-26-000026).
• Shares withheld/disposed: 4,838 at $297.81 per share; total ≈ $1,440,805.
• Shares owned after the transaction: not specified in the information provided on this filing.
• Footnote: F1 — shares were withheld by the issuer to pay taxes due upon vesting of restricted stock.
• Timeliness: Filed two days after the transaction; not marked late.

Context Share withholding to cover tax liabilities on vested restricted stock is a routine administrative transaction and does not necessarily signal an insider's view on the company’s prospects. Unlike open-market purchases, withholdings are neutral from a bullish/bearish signal perspective.