Form 4: Martin Marietta Exec Sells Shares for Tax Obligations

Robert J. Cardin, SVP, Controller & CAO of Martin Marietta Materials Inc., disposed of 32 shares of common stock to cover tax withholding obligations.

Summary

• Robert J. Cardin, SVP, Controller & CAO of Martin Marietta Materials Inc. (MLM), disposed of 32 shares of common stock.
• The transaction occurred on December 16, 2025, at a price of $629.49 per share.
• This disposition was made to satisfy tax withholding obligations.
• Following the transaction, Mr. Cardin directly beneficially owns 11,066 shares of common stock.
• The transaction was executed pursuant to a Rule 10b5-1(c) plan, indicating a pre-arranged sale.

Sentiment

Score: 5

Explanation: The transaction is a routine tax-related disposition under a 10b5-1 plan, which is generally considered neutral in terms of market sentiment as it does not reflect a discretionary investment decision.

Positives

• The disposition of shares was for tax withholding obligations, not a discretionary market sale by the officer.
• The transaction was executed under a pre-arranged Rule 10b5-1 plan, indicating a planned and non-discretionary sale.

Negatives

• No direct negatives identified from this tax-related disposition.

Risks

• NA

Future Outlook

NA

Management Comments

• NA

Industry Context

This filing details an individual insider transaction and does not provide broader industry context.

Comparison to Industry Standards

• NA

Management Changes

Corporate Governance

Legal Proceedings

• NA

Related Party Transactions

• Disposition of shares to the issuer to satisfy tax withholding obligations related to equity compensation.

Stakeholder Impact

• Shareholders: The disposition of 32 shares represents a negligible amount relative to the company's total outstanding shares, resulting in minimal dilution.
• Employees: No direct impact on the broader employee base is indicated by this insider transaction.

Next Steps

• NA

Key Dates

Recommendation

This Form 4 reports a routine disposition of a small number of shares by an officer to cover tax withholding obligations, executed under a pre-arranged 10b5-1 plan. Such transactions are common and generally do not signal a change in management's confidence or the company's fundamentals, thus warranting a 'hold' recommendation based solely on this filing.

Keywords

Martin Marietta Materials, MLM, Insider Transaction, Form 4, Robert J. Cardin, Stock Sale, Tax Withholding, Officer, SVP Controller CAO, 10b5-1 Plan