MARTIN MARIETTA MATERIALS INC (MLM)
Materials · Mining & Quarrying of Nonmetallic Minerals (No Fuels)
MARTIN MARIETTA MATERIALS INC (MLM) stock research on InvestAtlant: institutional ownership from 13F filings, insider Form 4 activity, and SEC context.
Top institutional holders (2026-Q3)
| Institution | Shares | Value | % Outstanding |
|---|---|---|---|
| Sumitomo Mitsui Trust Group, Inc. | 124,654 | $59.81M | 0.21% |
| FENIMORE ASSET MANAGEMENT INC | 89,370 | $42.88M | 0.15% |
| Lazard Freres Gestion S.A.S. | 74,559 | $35.8K | 0.12% |
| Border to Coast Pensions Partnership Ltd | 61,230 | $29.3K | 0.10% |
| Douglas Lane & Associates, LLC | 55,793 | $26.77M | 0.09% |
| CONFLUENCE INVESTMENT MANAGEMENT LLC | 49,097 | $23.56M | 0.08% |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM | 41,227 | 9.8K | 0.07% |
| STRS OHIO | 37,670 | 8.07M | 0.06% |
Recent insider transactions
| Date | Insider | Title | Type | Value |
|---|---|---|---|---|
| 2026-09-01 | Petro Michael J | SVP and CFO | A | $0 |
| 2026-08-31 | WAJSGRAS DAVID C | Director | A | $40.5K |
| 2026-08-31 | Pike Thomas | Director | A | $34.2K |
| 2026-08-31 | LYONS MARTIN J | Director | A | $35.3K |
| 2026-08-21 | Niemann Philipp | Director | A | $0 |
| 2026-08-03 | Petro Michael J | SVP and CFO | F | 99.6K |
| 2026-05-14 | SLAGER DONALD W | Director | A | $0 |
| 2026-05-14 | Pike Thomas | Director | A | $0 |