Martin Marietta Materials's three largest insider shareholders as of May 30, 2026 are C Howard Nye (Chairman, Pres Ceo, 176.04K shares), C Howard Nye (Chairman, Pres Ceo, 70.40K shares), Roselyn R Bar (Executive Vice President, 62.59K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Roselyn R Bar | Executive Vice President | 62,594 | 0 | 17 Dec, 2025 |
| Sue W Cole | - | 20,394 | 0 | 16 May, 2025 |
| David C Wajsgras | - | 4,646 | 0 | 02 Mar, 2026 |
| John J Koraleski | - | 8,822 | 0 | 02 Mar, 2026 |
| Michael J Quillen | - | 21,306 | 0 | 10 May, 2024 |
| Bradley D Kohn | Svp, General Counsel And Secy | 3,625 | 0 | 25 Feb, 2025 |
| Donald A. Mccunniff | Evp And Chro | 7,518 | 0 | 03 Mar, 2026 |
| C Howard Nye | Chairman, Pres Ceo | 176,038 | 0 | 03 Mar, 2026 |
| Dorothy M Ables | - | 3,908 | 0 | 16 May, 2025 |
| Thomas Pike | - | 4,591 | 0 | 02 Mar, 2026 |
| Robert J Cardin | Svp, Controller Cao | 12,459 | 0 | 25 Feb, 2026 |
| Mary T Mack | - | 601 | 0 | 16 May, 2025 |
| John P Mohr | Svp Cio | 14,974 | 0 | 05 Dec, 2023 |
| James Aj Nickolas | Evp And Cfo | 26,643 | 0 | 25 Feb, 2025 |
| Smith W Davis | - | 5,255 | 0 | 01 Mar, 2023 |
| Craig M Latorre | Sr. Vp, Chro | 8,634 | 0 | 05 Dec, 2023 |
| Anthony R Foxx | - | 2,302 | 0 | 16 May, 2025 |
| Michael J Petro | Svp And Cfo | 15,359 | 0 | 03 Mar, 2026 |
| Oliver W Brooks | Svp Enterprise Excellence | 5,178 | 0 | 25 Feb, 2025 |
| Kelly Gean Bennett | Svp, Chro | 4,454 | 0 | 27 Feb, 2024 |
| Jason Paul Flynn | Svp And Cio | 5,494 | 0 | 25 Feb, 2026 |
| George Frederick Schoen | Evp, Gc And Corp. Secretary | 23,673 | 0 | 03 Mar, 2026 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 01 Mar, 2026 | C Howard Nye | Common Stock | A | 5,919 | $0.00 | 176,038 | D | A |
| 01 Mar, 2026 | Donald A. Mccunniff | Common Stock | A | 2,960 | $0.00 | 7,518 | D | A |
| 01 Mar, 2026 | George Frederick Schoen | Common Stock | A | 23,673 | $0.00 | 23,673 | D | A |
| 01 Mar, 2026 | Michael J Petro | Common Stock | A | 2,960 | $0.00 | 15,359 | D | A |
| 01 Mar, 2026 | George Frederick Schoen | Common Stock | A | 23,673 | $0.00 | 23,673 | D | A |
| 01 Mar, 2026 | C Howard Nye | Common Stock | A | 5,919 | $0.00 | 176,038 | D | A |
| 01 Mar, 2026 | Michael J Petro | Common Stock | A | 2,960 | $0.00 | 15,359 | D | A |
| 01 Mar, 2026 | Donald A. Mccunniff | Common Stock | A | 2,960 | $0.00 | 7,518 | D | A |
| 27 Feb, 2026 | John J Koraleski | Common Stock | A | 69 | $676.57 | 8,822 | D | A |
| 27 Feb, 2026 | Thomas Pike | Common Stock | A | 47 | $676.57 | 4,591 | D | A |
| 27 Feb, 2026 | David C Wajsgras | Common Stock | A | 56 | $676.57 | 4,646 | D | A |
| 23 Feb, 2026 | Donald A. Mccunniff | Common Stock | D | 192 | $683.60 | 4,558 | D | F |
| 23 Feb, 2026 | C Howard Nye | Common Stock | D | 1,805 | $683.60 | 171,340 | D | F |
| 23 Feb, 2026 | Michael J Petro | Common Stock | D | 211 | $683.60 | 12,493 | D | F |
| 23 Feb, 2026 | Jason Paul Flynn | Common Stock | D | 177 | $683.60 | 5,524 | D | F |
| 23 Feb, 2026 | Michael J Petro | Common Stock | D | 211 | $683.60 | 12,493 | D | F |
| 23 Feb, 2026 | Donald A. Mccunniff | Common Stock | D | 192 | $683.60 | 4,558 | D | F |
| 23 Feb, 2026 | Robert J Cardin | Common Stock | D | 209 | $683.60 | 12,562 | D | F |
| 23 Feb, 2026 | C Howard Nye | Common Stock | D | 1,805 | $683.60 | 171,340 | D | F |
| 24 Feb, 2026 | Robert J Cardin | Common Stock | D | 103 | $696.85 | 12,459 | D | F |