Martin Marietta Materials (MLM) Ownership & Trading Activity

Institutional holders, insider transactions, and congressional trades for MLM. 13F holdings as of 2026-06-30.

Top Institutional Holders

InstitutionSharesValueChange
Davenport &336,791$195MDECREASED
Rathbones Group160,365$92MDECREASED
Steginsky Capital138,549$80MINCREASED
Curated Wealth Partners96,497$2MINCREASED
Fenimore Asset Management88,146$51MDECREASED

Recent Insider Trades

InsiderTypeSharesValueDate
Martin J Lyons (Director)AWARD61$35K2026-05-29
Thomas Pike (Director)AWARD59$34K2026-05-29
David C Wajsgras (Director)AWARD69$40K2026-05-29
Dorothy M Ables (Director)AWARD3132026-05-14
Gayla J Delly (Director)AWARD3132026-05-14

Recent Congressional Trades

MemberTypeAmountDate
Ro Khanna (Democrat)PURCHASE$15,001 - $50,0002026-06-05
April DelaneyPURCHASE$1,001 - $15,0002026-05-28
Josh Gottheimer (Democrat)SALE$15,001 - $50,0002026-04-09

Full institutional holdings, insider history, and congressional trades for Martin Marietta Materials on SentiSense.