Martin Marietta Materials Inc (MLM) Insider Ownership

Historic Insider Ownership Trends

MLM's three largest insider shareholders as of March 23, 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).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
C Howard Nye Chairman, Pres Ceo 176,038 0 03 Mar, 2026
C Howard Nye Chairman, Pres Ceo 0 70,400 06 Mar, 2024
Roselyn R Bar Executive Vice President 62,594 0 17 Dec, 2025
James Aj Nickolas Evp And Cfo 26,643 0 25 Feb, 2025
George Frederick Schoen Evp, Gc And Corp. Secretary 23,673 0 03 Mar, 2026
Michael J Quillen 21,306 0 10 May, 2024
Sue W Cole 20,394 0 16 May, 2025
Laree E Perez 15,417 0 11 Aug, 2025
Michael J Petro Svp And Cfo 15,359 0 03 Mar, 2026
John P Mohr Svp Cio 14,974 0 05 Dec, 2023
Robert J Cardin Svp, Controller Cao 12,459 0 25 Feb, 2026
John J Koraleski 8,822 0 02 Mar, 2026
Craig M Latorre Sr. Vp, Chro 8,634 0 05 Dec, 2023
Donald A. Mccunniff Evp And Chro 7,518 0 03 Mar, 2026
Jason Paul Flynn Svp And Cio 5,494 0 25 Feb, 2026
Smith W Davis 5,255 0 01 Mar, 2023
Oliver W Brooks Svp Enterprise Excellence 5,178 0 25 Feb, 2025
Donald W Slager 4,751 0 16 May, 2025
David C Wajsgras 4,646 0 02 Mar, 2026
Thomas Pike 4,591 0 02 Mar, 2026
Kelly Gean Bennett Svp, Chro 4,454 0 27 Feb, 2024
Dorothy M Ables 3,908 0 16 May, 2025
Bradley D Kohn Svp, General Counsel And Secy 3,625 0 25 Feb, 2025
Anthony R Foxx 2,302 0 16 May, 2025
Mary T Mack 601 0 16 May, 2025

* 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.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
01 Mar, 2026 Donald A. Mccunniff Common Stock A 2,960 $0.00 7,518 D A
01 Mar, 2026 Michael J Petro Common Stock A 2,960 $0.00 15,359 D A
01 Mar, 2026 C Howard Nye Common Stock A 5,919 $0.00 176,038 D A
01 Mar, 2026 George Frederick Schoen Common Stock A 23,673 $0.00 23,673 D A
27 Feb, 2026 David C Wajsgras Common Stock A 56 $676.57 4,646 D A
27 Feb, 2026 Thomas Pike Common Stock A 47 $676.57 4,591 D A
27 Feb, 2026 John J Koraleski Common Stock A 69 $676.57 8,822 D A
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
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
24 Feb, 2026 C Howard Nye Common Stock D 1,221 $696.85 170,119 D F
24 Feb, 2026 Michael J Petro Common Stock D 94 $696.85 12,399 D F
24 Feb, 2026 Robert J Cardin Common Stock D 103 $696.85 12,459 D F
24 Feb, 2026 Jason Paul Flynn Common Stock D 30 $696.85 5,494 D F
20 Feb, 2026 Michael J Petro Common Stock A 931 $0.00 12,704 D A
20 Feb, 2026 C Howard Nye Common Stock A 2,216 $548.75 166,740 D A
20 Feb, 2026 Donald A. Mccunniff Common Stock A 1,277 $0.00 4,750 D A
20 Feb, 2026 Jason Paul Flynn Common Stock A 592 $548.75 5,106 D A