{"entity":{"type":"insider","cik":"0001355849","url":"/insider/0001355849","json_url":"/insider/0001355849.json","name":"McCunniff Donald A.","name_source":"as-filed","also_issuer":false,"cross_url":null},"coverage_statement":{"n_transactions":9,"n_filings":8,"first":"2016-12-12","last":"2025-03-06","span_basis":"filed_date"},"name_variants":[{"name":"McCunniff Donald A.","source":"filing","n_filings":8,"first_seen":"2016-12-12","last_seen":"2025-03-06"}],"transactions":[{"id":4988487,"accession":"0001127602-25-008484","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001127602-25-008484","line_url":"/filing/0001127602-25-008484#line-2","is_derivative":false,"issuer_cik":"0000916076","issuer_name":"MARTIN MARIETTA MATERIALS INC","issuer_ticker":"MLM","issuer_name_source":null,"issuer_url":"/issuer/0000916076","owner_cik":"0001355849","owner_name":"McCunniff Donald A.","owner_display_name":"McCunniff Donald A.","owner_url":"/insider/0001355849","role":"Officer (EVP and CHRO)","role_mark":"O","role_mark_label":"Officer (EVP and CHRO)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"EVP and CHRO","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":1332.0,"shares_display":"1,332","price_per_share":475.0,"price_display":"475.00","price_state":"stated","total_value":632700.0,"total_display":"632,700.00","total_whole":"632,700","shares_owned_after":3523.0,"shares_owned_after_display":"3,523","ownership_form":"D","is_10b5_1":null,"transaction_date":"2025-03-05","filed_date":"2025-03-06","scope":"insider"},{"id":7815951,"accession":"0001127602-19-017608","txn_seq":3,"anchor":"line-3","filing_url":"/filing/0001127602-19-017608","line_url":"/filing/0001127602-19-017608#line-3","is_derivative":false,"issuer_cik":"0000916076","issuer_name":"MARTIN MARIETTA MATERIALS INC","issuer_ticker":"MLM","issuer_name_source":null,"issuer_url":"/issuer/0000916076","owner_cik":"0001355849","owner_name":"McCunniff Donald A.","owner_display_name":"McCunniff Donald A.","owner_url":"/insider/0001355849","role":"Officer (SVP - Human Resources)","role_mark":"O","role_mark_label":"Officer (SVP - Human Resources)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"SVP - Human Resources","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":3183.0,"shares_display":"3,183","price_per_share":220.1925,"price_display":"220.19","price_state":"stated","total_value":700872.7275,"total_display":"700,872.73","total_whole":"700,873","shares_owned_after":12803.0,"shares_owned_after_display":"12,803","ownership_form":"D","is_10b5_1":null,"transaction_date":"2019-05-06","filed_date":"2019-05-07","scope":"insider"},{"id":7914134,"accession":"0001127602-19-008845","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001127602-19-008845","line_url":"/filing/0001127602-19-008845#line-2","is_derivative":false,"issuer_cik":"0000916076","issuer_name":"MARTIN MARIETTA MATERIALS INC","issuer_ticker":"MLM","issuer_name_source":null,"issuer_url":"/issuer/0000916076","owner_cik":"0001355849","owner_name":"McCunniff Donald A.","owner_display_name":"McCunniff Donald A.","owner_url":"/insider/0001355849","role":"Officer (SVP - Human Resources)","role_mark":"O","role_mark_label":"Officer (SVP - Human Resources)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"SVP - Human Resources","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":1563.0,"shares_display":"1,563","price_per_share":189.31,"price_display":"189.31","price_state":"stated","total_value":295891.53,"total_display":"295,891.53","total_whole":"295,892","shares_owned_after":13786.0,"shares_owned_after_display":"13,786","ownership_form":"D","is_10b5_1":null,"transaction_date":"2019-02-28","filed_date":"2019-02-28","scope":"insider"},{"id":7914128,"accession":"0001127602-19-008845","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001127602-19-008845","line_url":"/filing/0001127602-19-008845#line-1","is_derivative":false,"issuer_cik":"0000916076","issuer_name":"MARTIN MARIETTA MATERIALS INC","issuer_ticker":"MLM","issuer_name_source":null,"issuer_url":"/issuer/0000916076","owner_cik":"0001355849","owner_name":"McCunniff Donald A.","owner_display_name":"McCunniff Donald A.","owner_url":"/insider/0001355849","role":"Officer (SVP - Human Resources)","role_mark":"O","role_mark_label":"Officer (SVP - Human Resources)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"SVP - Human Resources","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":660.0,"shares_display":"660","price_per_share":190.9,"price_display":"190.90","price_state":"stated","total_value":125994.0,"total_display":"125,994.00","total_whole":"125,994","shares_owned_after":15349.0,"shares_owned_after_display":"15,349","ownership_form":"D","is_10b5_1":null,"transaction_date":"2019-02-27","filed_date":"2019-02-28","scope":"insider"},{"id":6339914,"accession":"0001127602-18-032756","txn_seq":3,"anchor":"line-3","filing_url":"/filing/0001127602-18-032756","line_url":"/filing/0001127602-18-032756#line-3","is_derivative":false,"issuer_cik":"0000916076","issuer_name":"MARTIN MARIETTA MATERIALS INC","issuer_ticker":"MLM","issuer_name_source":null,"issuer_url":"/issuer/0000916076","owner_cik":"0001355849","owner_name":"McCunniff Donald A.","owner_display_name":"McCunniff Donald A.","owner_url":"/insider/0001355849","role":"Officer (SVP - Human Resources)","role_mark":"O","role_mark_label":"Officer (SVP - Human Resources)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"SVP - Human Resources","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":1476.0,"shares_display":"1,476","price_per_share":185.5,"price_display":"185.50","price_state":"stated","total_value":273798.0,"total_display":"273,798.00","total_whole":"273,798","shares_owned_after":12649.0,"shares_owned_after_display":"12,649","ownership_form":"D","is_10b5_1":null,"transaction_date":"2018-11-09","filed_date":"2018-11-13","scope":"insider"},{"id":6522837,"accession":"0001127602-18-026177","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001127602-18-026177","line_url":"/filing/0001127602-18-026177#line-1","is_derivative":false,"issuer_cik":"0000916076","issuer_name":"MARTIN MARIETTA MATERIALS INC","issuer_ticker":"MLM","issuer_name_source":null,"issuer_url":"/issuer/0000916076","owner_cik":"0001355849","owner_name":"McCunniff Donald A.","owner_display_name":"McCunniff Donald A.","owner_url":"/insider/0001355849","role":"Officer (SVP - Human Resources)","role_mark":"O","role_mark_label":"Officer (SVP - Human Resources)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"SVP - Human Resources","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":2250.0,"shares_display":"2,250","price_per_share":204.3251,"price_display":"204.33","price_state":"stated","total_value":459731.475,"total_display":"459,731.48","total_whole":"459,731","shares_owned_after":12649.0,"shares_owned_after_display":"12,649","ownership_form":"D","is_10b5_1":null,"transaction_date":"2018-08-22","filed_date":"2018-08-24","scope":"insider"},{"id":6683554,"accession":"0001127602-18-020780","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001127602-18-020780","line_url":"/filing/0001127602-18-020780#line-1","is_derivative":false,"issuer_cik":"0000916076","issuer_name":"MARTIN MARIETTA MATERIALS INC","issuer_ticker":"MLM","issuer_name_source":null,"issuer_url":"/issuer/0000916076","owner_cik":"0001355849","owner_name":"McCunniff Donald A.","owner_display_name":"McCunniff Donald A.","owner_url":"/insider/0001355849","role":"Officer (SVP - Human Resources)","role_mark":"O","role_mark_label":"Officer (SVP - Human Resources)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"SVP - Human Resources","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":4226.0,"shares_display":"4,226","price_per_share":230.722,"price_display":"230.72","price_state":"stated","total_value":975031.172,"total_display":"975,031.17","total_whole":"975,031","shares_owned_after":14899.0,"shares_owned_after_display":"14,899","ownership_form":"D","is_10b5_1":null,"transaction_date":"2018-06-13","filed_date":"2018-06-13","scope":"insider"},{"id":4985959,"accession":"0001127602-17-016887","txn_seq":3,"anchor":"line-3","filing_url":"/filing/0001127602-17-016887","line_url":"/filing/0001127602-17-016887#line-3","is_derivative":false,"issuer_cik":"0000916076","issuer_name":"MARTIN MARIETTA MATERIALS INC","issuer_ticker":"MLM","issuer_name_source":null,"issuer_url":"/issuer/0000916076","owner_cik":"0001355849","owner_name":"McCunniff Donald A.","owner_display_name":"McCunniff Donald A.","owner_url":"/insider/0001355849","role":"Officer (SVP - Human Resources)","role_mark":"O","role_mark_label":"Officer (SVP - Human Resources)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"SVP - Human Resources","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":1391.0,"shares_display":"1,391","price_per_share":240.1662,"price_display":"240.17","price_state":"stated","total_value":334071.1842,"total_display":"334,071.18","total_whole":"334,071","shares_owned_after":18039.0,"shares_owned_after_display":"18,039","ownership_form":"D","is_10b5_1":null,"transaction_date":"2017-05-04","filed_date":"2017-05-04","scope":"insider"},{"id":2437141,"accession":"0001127602-16-069704","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001127602-16-069704","line_url":"/filing/0001127602-16-069704#line-1","is_derivative":false,"issuer_cik":"0000916076","issuer_name":"MARTIN MARIETTA MATERIALS INC","issuer_ticker":"MLM","issuer_name_source":null,"issuer_url":"/issuer/0000916076","owner_cik":"0001355849","owner_name":"McCunniff Donald A.","owner_display_name":"McCunniff Donald A.","owner_url":"/insider/0001355849","role":"Officer (SVP - Human Resources)","role_mark":"O","role_mark_label":"Officer (SVP - Human Resources)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"SVP - Human Resources","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":1503.0,"shares_display":"1,503","price_per_share":228.9782,"price_display":"228.98","price_state":"stated","total_value":344154.2346,"total_display":"344,154.23","total_whole":"344,154","shares_owned_after":14832.0,"shares_owned_after_display":"14,832","ownership_form":"D","is_10b5_1":null,"transaction_date":"2016-12-09","filed_date":"2016-12-12","scope":"insider"}],"collapsed":true,"next_cursor":null,"ledger_fault":false,"count":{"value":9,"kind":"exact"},"open_market_only":false,"composition":{"kind":"exact","rows":[{"code":"P","label":"Open-market purchase","n":0,"open_market":true},{"code":"S","label":"Open-market sale","n":9,"open_market":true},{"code":"M","label":"Option exercise","n":0,"open_market":false},{"code":"A","label":"Grant or award","n":0,"open_market":false},{"code":"F","label":"Tax withholding","n":0,"open_market":false},{"code":"D","label":"Disposition to the issuer","n":0,"open_market":false},{"code":"X","label":"In-the-money option exercise","n":0,"open_market":false}],"total":9},"affiliations":[{"type":"issuer","type_label":"ISSUER","cik":"0000916076","name":"MARTIN MARIETTA MATERIALS INC","url":"/issuer/0000916076","role":"Officer (EVP and CHRO)","n_filings":8,"first_seen":"2016-12-12","last_seen":"2025-03-06"}],"order_statement":"Newest transaction date first, id breaking the tie.","canonical_url":"https://ebomi.com/insider/0001355849","retrieved_at":"2026-08-26T04:51:40+00:00","coverage":{"filings":1506293,"transactions":4290787,"issuers":28597,"insiders":152303,"first_filed_date":"2003-06-30","last_filed_date":"2026-08-24","last_ingest":"2026-08-25T05:24:19.374141+00:00","counts_are":{"filings":"estimate","transactions":"estimate","issuers":"estimate","insiders":"estimate"},"source":"SEC EDGAR Form 4 filings, parsed by ebomi","fault":false},"license":{"underlying_records":"US SEC filings are public records of the United States government and are not subject to copyright. The transactional facts in them are not ours to license.","this_presentation":"The parsing, normalisation, curation, and presentation are ebomi's own work.","grant":"undecided","grant_note":"The open licence for ebomi's own layer is an open owner decision (SPEC-20260731T1159Z open question 3: CC BY 4.0 or CC0 with a citation request). Until it is taken, no grant is asserted here.","citation_request":"Balogh, A. Insider trading. Scientific Data 10, 237 (2023)","url":"https://ebomi.com/license"},"fair_use":{"policy":"These JSON endpoints are open and unauthenticated. Please read them at a human pace, identify your client in the User-Agent header, and use the published dataset for bulk work rather than crawling page by page.","bulk_alternative":"doi:10.1038/s41597-023-02147-6"}}