Form 4: MasTec EVP Sells Shares for Tax Obligations

MasTec's EVP and General Counsel, Alberto de Cardenas, disposed of 4,838 shares of common stock to cover tax liabilities related to restricted stock vesting.

Summary

• Alberto de Cardenas, Executive Vice President and General Counsel of MasTec Inc. (MTZ), reported a disposition of common stock.
• A total of 4,838 shares were disposed of at a price of $297.81 per share on March 10, 2026.
• The disposition was made to satisfy tax withholding obligations upon the vesting of restricted stock.
• Following this transaction, Mr. de Cardenas directly owns 96,511 shares of common stock and indirectly owns 8,083.719 shares through a 401(k) Plan.
• The transaction was executed under a Rule 10b5-1 plan, indicating a pre-arranged sale.

Sentiment

Score: 6

Explanation: StockSavvy.ai views this as a neutral event, as it represents a routine tax-related disposition of shares by an executive, which is a common occurrence with equity compensation. The executive retains substantial ownership.

Positives

• The executive continues to hold a substantial number of shares (96,511 directly and 8,083.719 indirectly), indicating continued alignment with shareholder interests.
• The transaction was pre-planned under a Rule 10b5-1 plan, suggesting a structured approach to equity management rather than an opportunistic sale.

Negatives

• The disposition of 4,838 shares by a key executive, even for tax purposes, reduces their direct ownership in the company.

Risks

• NA

Future Outlook

NA

Management Comments

• NA

Industry Context

StockSavvy.ai notes that such tax-related sales are common for executives receiving equity compensation and do not typically signal a change in company fundamentals or broader industry trends within the infrastructure and construction sector.

Comparison to Industry Standards

• Tax-related share dispositions upon vesting of restricted stock are a common and expected practice for executives across all industries, including the infrastructure and construction sector where MasTec operates.

Management Changes

Corporate Governance

Legal Proceedings

• NA

Related Party Transactions

• The disposition of shares by Alberto de Cardenas to MasTec Inc. to cover tax liabilities upon restricted stock vesting is a routine related-party transaction inherent in executive equity compensation.

Stakeholder Impact

• Shareholders: Minimal direct impact as this is a routine, non-discretionary sale for tax purposes, and the executive's overall ownership remains significant.
• Management: The executive's compensation structure includes equity, which is a common practice for aligning interests.

Next Steps

• NA

Key Dates

Recommendation

This Form 4 filing details a routine, non-discretionary sale of shares by an executive to cover tax obligations upon restricted stock vesting. Such transactions are common and do not typically reflect a change in the company's fundamentals or the executive's confidence in the company. The executive retains a substantial stake, suggesting continued alignment. Therefore, this filing alone does not warrant a change in investment recommendation, maintaining a "hold" stance.

Keywords

MasTec, MTZ, Alberto de Cardenas, Insider Transaction, Form 4, Stock Sale, Restricted Stock, Tax Withholding, Executive Compensation