McCunniff Donald A. 4

What Happened

• Donald A. McCunniff, Executive Vice President and Chief Human Resources Officer of Martin Marietta Materials (MLM), was granted 2,960 restricted stock units (RSUs) on March 1, 2026. The award shows an acquisition price of $0.00 (typical for RSU grants), so there was no cash purchase or sale.

Key Details

• Transaction date: 2026-03-01; Filing date: 2026-03-03 (filed two days after the grant).
• Transaction type/code: Award/Grant (A); 2,960 shares @ $0.00 (total immediate value shown as $0).
• Grant subject to: Martin Marietta Materials, Inc. Amended and Restated Stock-Based Award Plan.
• Vesting: Cliff vests on the third anniversary of the award date, subject to continued employment and other award terms (per footnote).
• Shares owned after the transaction: not specified in the information provided.
• No indication of a 10b5-1 plan, cashless exercise, tax-withholding sale, or late filing in this report.

Context

• This is a standard compensation grant (RSUs) rather than an open-market purchase or sale. RSUs do not represent transferable shares until they vest; they typically signal long-term retention/compensation rather than an immediate trading view by the insider.