Form 4: Martin Marietta Director Acquires 76 Shares

Martin Marietta Materials Inc. Director John J. Koraleski acquired 76 shares of common stock at $616.4 per share, as part of a pre-planned compensation arrangement.

Summary

• John J. Koraleski, a Director of Martin Marietta Materials Inc. (MLM), acquired 76 shares of common stock.
• The acquisition occurred on August 29, 2025, at a price of $616.4 per share.
• This transaction was made pursuant to the company's Common Stock Purchase Plan for Directors and is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c), indicating a pre-planned acquisition.
• Following this transaction, Mr. Koraleski directly owns 8,678 shares and indirectly owns 6,900 shares through SJK HOLDINGS and INVESTMENTS, LLC (2,000 shares) and JJ KORALESKI and SF KORALESKI CO-TTEE KORALESKI LIVING TRUST U/A DTD 01/18/1991 (4,900 shares).

Sentiment

Score: 6

Explanation: A director's acquisition of shares, even if part of a compensation plan, generally indicates a positive sentiment towards the company. However, the relatively small number of shares limits the overall impact on sentiment.

Positives

• A director's acquisition of shares, even if part of a plan, can signal confidence in the company's future prospects.
• The transaction was executed under a Rule 10b5-1 plan, indicating a pre-scheduled, non-discretionary acquisition.

Negatives

• The number of shares acquired (76) is relatively small, limiting its significance as a strong signal of conviction.

Future Outlook

The filing does not provide specific forward-looking statements or guidance beyond the nature of the stock unit settlement under the director plan, which indicates future stock distribution.

Management Comments

• Common stock units were accrued under the Martin Marietta Materials, Inc. Common Stock Purchase Plan for Directors and are to be settled in stock in a lump sum or in installments not to exceed 10 years commencing on (i) the date the reporting person ceases to be a Non-Employee Director, (ii) the date that is one month and one year following the date the reporting person ceases to be a Non-Employee Director, or (iii) the date elected by the Non-Employee Director that is later than the third anniversary of the date the fees are earned, in accordance with the reporting person's election under the Plan.

Industry Context

This Form 4 filing is a routine disclosure of an insider transaction and does not provide information directly related to broader industry trends or competitor activities. It reflects an individual director's compensation structure within the company.

Corporate Governance

Related Party Transactions

• Director John J. Koraleski, a related party, acquired common stock units from Martin Marietta Materials Inc. as part of his compensation under the company's Common Stock Purchase Plan for Directors.

Stakeholder Impact

• Shareholders: The acquisition by a director, even if routine, can be viewed as a minor positive signal of insider confidence. The small transaction size means minimal direct impact on share price or ownership structure.

Next Steps

• Settlement of common stock units in a lump sum or installments not to exceed 10 years, commencing upon the reporting person ceasing to be a Non-Employee Director, one month and one year after ceasing to be a Non-Employee Director, or a date elected by the director later than the third anniversary of fees earned.

Key Dates

Keywords

Martin Marietta Materials, MLM, John J. Koraleski, Director, Insider Trading, Form 4, Stock Acquisition, Common Stock, 10b5-1 Plan, Construction Materials