Martin Marietta (MLM) Director Mary T. Mack Receives 313-Share Award

What Happened
Mary T. Mack, a director of Martin Marietta Materials, was granted 313 shares on May 14, 2026. The Form 4 reports the transaction as an award/grant (transaction code A) with an acquisition price of $0.00 (reported value $0), indicating a compensation award rather than an open-market purchase.

Key Details

• Transaction date: 2026-05-14 (reported on Form 4 filed 2026-05-18)
• Transaction type/code: Award/Grant (A)
• Shares acquired: 313; reported price per share: $0.00; reported transaction value: $0
• Shares owned after transaction: not provided in the supplied data (check the full Form 4 for beneficial ownership totals)
• Footnotes/tax withholding: none shown in the provided summary
• Filing timeliness: Filed on 2026-05-18, which appears to be within the 2-business-day Form 4 reporting window

Context
Grants to directors are commonly part of routine compensation (e.g., restricted stock or RSUs) and do not carry the same market-signaling weight as open-market purchases. The Form 4 indicates an award and does not show an immediate sale or cashless exercise. For full details (award type, vesting, or any footnotes), review the complete SEC filing.