{"transactions":[{"id":1984843,"issuer":{"id":587,"kind":"organization","name":"MARTIN MARIETTA MATERIALS INC","symbol":"MLM"},"owners":[{"id":116267,"kind":"person","name":"Davis Smith W","position":1,"cik":"0001741178","reported_name":"Davis Smith W","relationship":{"director":true}}],"security":"Common Stock","published_at":"2023-03-01T22:19:40.000Z","date":"2023-02-28","kind":"grant","acquired":true,"shares":94,"price":359.87,"value":33827.78,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Common stock units were accrued under the Martin Marietta Materials, Inc. Common Stock Purchase Plan for Directors (the \"Plan\") and are to be settled in stock in a lump sum or in installments not to exceed 10 years commencing on (i) the date the reporting person ceases to be a Non-Employee Director, (ii) the date that is one month and one year following the date the reporting person ceases to be a Non-Employee Director, or (iii) the date elected by the Non-Employee Director that is later than the third anniversary of the date the fees are earned, in accordance with the reporting person's election under the Plan."}],"balance_after":5255,"source":{"system":"sec-edgar","filing":"0001127602-23-007967","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/916076/000112760223007967/form4.xml","form_type":"4"}},{"id":2099060,"issuer":{"id":587,"kind":"organization","name":"MARTIN MARIETTA MATERIALS INC","symbol":"MLM"},"owners":[{"id":116267,"kind":"person","name":"Davis Smith W","position":1,"cik":"0001741178","reported_name":"Davis Smith W","relationship":{"director":true}}],"security":"Common Stock","published_at":"2022-12-02T14:51:06.000Z","date":"2022-11-30","kind":"grant","acquired":true,"shares":93,"price":366.48,"value":34082.64,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Common stock units were accrued under the Martin Marietta Materials, Inc. Common Stock Purchase Plan for Directors (the \"Plan\") and are to be settled in stock in a lump sum or in installments not to exceed 10 years commencing on (i) the date the reporting person ceases to be a Non-Employee Director, (ii) the date that is one month and one year following the date the reporting person ceases to be a Non-Employee Director, or (iii) the date elected by the Non-Employee Director that is later than the third anniversary of the date the fees are earned, in accordance with the reporting person's election under the Plan."}],"balance_after":5161,"source":{"system":"sec-edgar","filing":"0001127602-22-026678","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/916076/000112760222026678/form4.xml","form_type":"4"}},{"id":2169323,"issuer":{"id":587,"kind":"organization","name":"MARTIN MARIETTA MATERIALS INC","symbol":"MLM"},"owners":[{"id":116267,"kind":"person","name":"Davis Smith W","position":1,"cik":"0001741178","reported_name":"Davis Smith W","relationship":{"director":true}}],"security":"Common Stock","published_at":"2022-09-01T18:40:12.000Z","date":"2022-08-31","kind":"grant","acquired":true,"shares":98,"price":347.41,"value":34046.18,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Common stock units were accrued under the Martin Marietta Materials, Inc. Common Stock Purchase Plan for Directors (the \"Plan\") and are to be settled in stock in a lump sum or in installments not to exceed 10 years commencing on (i) the date the reporting person ceases to be a Non-Employee Director, (ii) the date that is one month and one year following the date the reporting person ceases to be a Non-Employee Director, or (iii) the date elected by the Non-Employee Director that is later than the third anniversary of the date the fees are earned, in accordance with the reporting person's election under the Plan."}],"balance_after":5068,"source":{"system":"sec-edgar","filing":"0001127602-22-021874","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/916076/000112760222021874/form4.xml","form_type":"4"}},{"id":2248182,"issuer":{"id":587,"kind":"organization","name":"MARTIN MARIETTA MATERIALS INC","symbol":"MLM"},"owners":[{"id":116267,"kind":"person","name":"Davis Smith W","position":1,"cik":"0001741178","reported_name":"Davis Smith W","relationship":{"director":true}}],"security":"Common Stock","published_at":"2022-06-02T20:22:03.000Z","date":"2022-05-31","kind":"grant","acquired":true,"shares":100,"price":339.38,"value":33938.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Common stock units were accrued under the Martin Marietta Materials, Inc. Common Stock Purchase Plan for Directors (the \"Plan\") and are to be settled in stock in a lump sum or in installments not to exceed 10 years commencing on (i) the date the reporting person ceases to be a Non-Employee Director, (ii) the date that is one month and one year following the date the reporting person ceases to be a Non-Employee Director, or (iii) the date elected by the Non-Employee Director that is later than the third anniversary of the date the fees are earned, in accordance with the reporting person's election under the Plan."}],"balance_after":4970,"source":{"system":"sec-edgar","filing":"0001127602-22-016372","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/916076/000112760222016372/form4.xml","form_type":"4"}},{"id":2271006,"issuer":{"id":587,"kind":"organization","name":"MARTIN MARIETTA MATERIALS INC","symbol":"MLM"},"owners":[{"id":116267,"kind":"person","name":"Davis Smith W","position":1,"cik":"0001741178","reported_name":"Davis Smith W","relationship":{"director":true}}],"security":"Common Stock","published_at":"2022-05-16T15:29:41.000Z","date":"2022-05-12","kind":"grant","acquired":true,"shares":443,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":4870,"source":{"system":"sec-edgar","filing":"0001127602-22-014556","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/916076/000112760222014556/form4.xml","form_type":"4"}},{"id":2366755,"issuer":{"id":587,"kind":"organization","name":"MARTIN MARIETTA MATERIALS INC","symbol":"MLM"},"owners":[{"id":116267,"kind":"person","name":"Davis Smith W","position":1,"cik":"0001741178","reported_name":"Davis Smith W","relationship":{"director":true}}],"security":"Common Stock","published_at":"2022-03-01T19:06:34.000Z","date":"2022-02-28","kind":"grant","acquired":true,"shares":89,"price":379.4,"value":33766.6,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Common stock units were accrued under the Martin Marietta Materials, Inc. Common Stock Purchase Plan for Directors (the \"Plan\") and are to be settled in stock in a lump sum or in installments not to exceed 10 years commencing on (i) the date the reporting person ceases to be a Non-Employee Director, (ii) the date that is one month and one year following the date the reporting person ceases to be a Non-Employee Director, or (iii) the date elected by the Non-Employee Director that is later than the third anniversary of the date the fees are earned, in accordance with the reporting person's election under the Plan."}],"balance_after":4427,"source":{"system":"sec-edgar","filing":"0001127602-22-007242","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/916076/000112760222007242/form4.xml","form_type":"4"}},{"id":2489611,"issuer":{"id":587,"kind":"organization","name":"MARTIN MARIETTA MATERIALS INC","symbol":"MLM"},"owners":[{"id":116267,"kind":"person","name":"Davis Smith W","position":1,"cik":"0001741178","reported_name":"Davis Smith W","relationship":{"director":true}}],"security":"Common Stock","published_at":"2021-12-02T22:36:32.000Z","date":"2021-11-30","kind":"grant","acquired":true,"shares":84,"price":403.51,"value":33894.84,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Common stock units were accrued under the Martin Marietta Materials, Inc. Common Stock Purchase Plan for Directors (the \"Plan\") and are to be settled in stock in a lump sum or in installments not to exceed 10 years commencing on (i) the date the reporting person ceases to be a Non-Employee Director, (ii) the date that is one month and one year following the date the reporting person ceases to be a Non-Employee Director, or (iii) the date elected by the Non-Employee Director that is later than the third anniversary of the date the fees are earned, in accordance with the reporting person's election under the Plan."}],"balance_after":4338,"source":{"system":"sec-edgar","filing":"0001127602-21-030145","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/916076/000112760221030145/form4.xml","form_type":"4"}},{"id":2582473,"issuer":{"id":587,"kind":"organization","name":"MARTIN MARIETTA MATERIALS INC","symbol":"MLM"},"owners":[{"id":116267,"kind":"person","name":"Davis Smith W","position":1,"cik":"0001741178","reported_name":"Davis Smith W","relationship":{"director":true}}],"security":"Common Stock","published_at":"2021-09-02T14:30:52.000Z","date":"2021-08-31","kind":"grant","acquired":true,"shares":89,"price":381.25,"value":33931.25,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Common stock units were accrued under the Martin Marietta Materials, Inc. Common Stock Purchase Plan for Directors (the \"Plan\") and are to be settled in stock in a lump sum or in installments not to exceed 10 years commencing on (i) the date the reporting person ceases to be a Non-Employee Director, (ii) the date that is one month and one year following the date the reporting person ceases to be a Non-Employee Director, or (iii) the date elected by the Non-Employee Director that is later than the third anniversary of the date the fees are earned, in accordance with the reporting person's election under the Plan."}],"balance_after":4254,"source":{"system":"sec-edgar","filing":"0001127602-21-024718","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/916076/000112760221024718/form4.xml","form_type":"4"}},{"id":2689884,"issuer":{"id":587,"kind":"organization","name":"MARTIN MARIETTA MATERIALS INC","symbol":"MLM"},"owners":[{"id":116267,"kind":"person","name":"Davis Smith W","position":1,"cik":"0001741178","reported_name":"Davis Smith W","relationship":{"director":true}}],"security":"Common Stock","published_at":"2021-06-01T22:31:22.000Z","date":"2021-05-28","kind":"grant","acquired":true,"shares":93,"price":363.65,"value":33819.45,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Common stock units were accrued under the Martin Marietta Materials, Inc. Common Stock Purchase Plan for Directors (the \"Plan\") and are to be settled in stock in a lump sum or in installments not to exceed 10 years commencing on (i) the date the reporting person ceases to be a Non-Employee Director, (ii) the date that is one month and one year following the date the reporting person ceases to be a Non-Employee Director, or (iii) the date elected by the Non-Employee Director that is later than the third anniversary of the date the fees are earned, in accordance with the reporting person's election under the Plan."}],"balance_after":4165,"source":{"system":"sec-edgar","filing":"0001127602-21-018570","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/916076/000112760221018570/form4.xml","form_type":"4"}},{"id":2711161,"issuer":{"id":587,"kind":"organization","name":"MARTIN MARIETTA MATERIALS INC","symbol":"MLM"},"owners":[{"id":116267,"kind":"person","name":"Davis Smith W","position":1,"cik":"0001741178","reported_name":"Davis Smith W","relationship":{"director":true}}],"security":"Common Stock","published_at":"2021-05-17T15:54:39.000Z","date":"2021-05-13","kind":"grant","acquired":true,"shares":388,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":4072,"source":{"system":"sec-edgar","filing":"0001127602-21-016956","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/916076/000112760221016956/form4.xml","form_type":"4"}},{"id":2822603,"issuer":{"id":587,"kind":"organization","name":"MARTIN MARIETTA MATERIALS INC","symbol":"MLM"},"owners":[{"id":116267,"kind":"person","name":"Davis Smith W","position":1,"cik":"0001741178","reported_name":"Davis Smith W","relationship":{"director":true}}],"security":"Common Stock","published_at":"2021-03-02T19:13:53.000Z","date":"2021-02-26","kind":"grant","acquired":true,"shares":95,"price":336.87,"value":32002.65,"ownership":{"direct":true},"balance_after":3684,"source":{"system":"sec-edgar","filing":"0001127602-21-008626","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/916076/000112760221008626/form4.xml","form_type":"4"}},{"id":2961678,"issuer":{"id":587,"kind":"organization","name":"MARTIN MARIETTA MATERIALS INC","symbol":"MLM"},"owners":[{"id":116267,"kind":"person","name":"Davis Smith W","position":1,"cik":"0001741178","reported_name":"Davis Smith W","relationship":{"director":true}}],"security":"Common Stock","published_at":"2020-12-02T17:05:39.000Z","date":"2020-11-30","kind":"grant","acquired":true,"shares":121,"price":265.63,"value":32141.23,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Common stock units were accrued under the Martin Marietta Materials, Inc. Common Stock Purchase Plan for Directors (the \"Plan\") and are to be settled in stock in a lump sum or in installments not to exceed 10 years commencing on (i) the date the reporting person ceases to be a Non-Employee Director, (ii) the date that is one month and one year following the date the reporting person ceases to be a Non-Employee Director, or (iii) the date elected by the Non-Employee Director that is later than the third anniversary of the date the fees are earned, in accordance with the reporting person's election under the Plan."}],"balance_after":3589,"source":{"system":"sec-edgar","filing":"0001127602-20-030265","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/916076/000112760220030265/form4.xml","form_type":"4"}},{"id":3043074,"issuer":{"id":587,"kind":"organization","name":"MARTIN MARIETTA MATERIALS INC","symbol":"MLM"},"owners":[{"id":116267,"kind":"person","name":"Davis Smith W","position":1,"cik":"0001741178","reported_name":"Davis Smith W","relationship":{"director":true}}],"security":"Common Stock","published_at":"2020-09-01T16:53:35.000Z","date":"2020-08-31","kind":"grant","acquired":true,"shares":158,"price":202.87,"value":32053.46,"ownership":{"direct":true},"balance_after":3468,"source":{"system":"sec-edgar","filing":"0001127602-20-024514","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/916076/000112760220024514/form4.xml","form_type":"4"}},{"id":3129611,"issuer":{"id":587,"kind":"organization","name":"MARTIN MARIETTA MATERIALS INC","symbol":"MLM"},"owners":[{"id":116267,"kind":"person","name":"Davis Smith W","position":1,"cik":"0001741178","reported_name":"Davis Smith W","relationship":{"director":true}}],"security":"Common Stock","published_at":"2020-06-01T16:25:01.000Z","date":"2020-05-29","kind":"grant","acquired":true,"shares":167,"price":192.09,"value":32079.03,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Common stock units were accrued under the Martin Marietta Materials, Inc. Common Stock Purchase Plan for Directors (the \"Plan\") and are to be settled in stock in a lump sum or in installments not to exceed 10 years commencing on (i) the date the reporting person ceases to be a Non-Employee Director, (ii) the date that is one month and one year following the date the reporting person ceases to be a Non-Employee Director, or (iii) the date elected by the Non-Employee Director that is later than the third anniversary of the date the fees are earned, in accordance with the reporting person's election under the Plan."}],"balance_after":3310,"source":{"system":"sec-edgar","filing":"0001127602-20-018213","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/916076/000112760220018213/form4.xml","form_type":"4"}},{"id":3147878,"issuer":{"id":587,"kind":"organization","name":"MARTIN MARIETTA MATERIALS INC","symbol":"MLM"},"owners":[{"id":116267,"kind":"person","name":"Davis Smith W","position":1,"cik":"0001741178","reported_name":"Davis Smith W","relationship":{"director":true}}],"security":"Common Stock","published_at":"2020-05-15T20:21:00.000Z","date":"2020-05-14","kind":"grant","acquired":true,"shares":770,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":3143,"source":{"system":"sec-edgar","filing":"0001127602-20-016760","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/916076/000112760220016760/form4.xml","form_type":"4"}},{"id":3234685,"issuer":{"id":587,"kind":"organization","name":"MARTIN MARIETTA MATERIALS INC","symbol":"MLM"},"owners":[{"id":116267,"kind":"person","name":"Davis Smith W","position":1,"cik":"0001741178","reported_name":"Davis Smith W","relationship":{"director":true}}],"security":"Common Stock","published_at":"2020-03-03T16:47:08.000Z","date":"2020-02-28","kind":"grant","acquired":true,"shares":141,"price":227.53,"value":32081.73,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Common stock units were accrued under the Martin Marietta Materials, Inc. Common Stock Purchase Plan for Directors (the \"Plan\") and are to be settled in stock in a lump sum or in installments not to exceed 10 years commencing on (i) the date the reporting person ceases to be a Non-Employee Director, (ii) the date that is one month and one year following the date the reporting person ceases to be a Non-Employee Director, or (iii) the date elected by the Non-Employee Director that is later than the third anniversary of the date the fees are earned, in accordance with the reporting person's election under the Plan."}],"balance_after":2373,"source":{"system":"sec-edgar","filing":"0001127602-20-008786","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/916076/000112760220008786/form4.xml","form_type":"4"}},{"id":3355010,"issuer":{"id":587,"kind":"organization","name":"MARTIN MARIETTA MATERIALS INC","symbol":"MLM"},"owners":[{"id":116267,"kind":"person","name":"Davis Smith W","position":1,"cik":"0001741178","reported_name":"Davis Smith W","relationship":{"director":true}}],"security":"Common Stock","published_at":"2019-12-03T16:13:28.000Z","date":"2019-11-29","kind":"grant","acquired":true,"shares":120,"price":268.4,"value":32208.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Common stock units were accrued under the Martin Marietta Materials, Inc. Common Stock Purchase Plan for Directors (the \"Plan\") and are to be settled in stock in a lump sum or in installments not to exceed 10 years commencing on (i) the date the reporting person ceases to be a Non-Employee Director, (ii) the date that is one month and one year following the date the reporting person ceases to be a Non-Employee Director, or (iii) the date elected by the Non-Employee Director that is later than the third anniversary of the date the fees are earned, in accordance with the reporting person's election under the Plan."}],"balance_after":2232,"source":{"system":"sec-edgar","filing":"0001127602-19-034042","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/916076/000112760219034042/form4.xml","form_type":"4"}},{"id":3425268,"issuer":{"id":587,"kind":"organization","name":"MARTIN MARIETTA MATERIALS INC","symbol":"MLM"},"owners":[{"id":116267,"kind":"person","name":"Davis Smith W","position":1,"cik":"0001741178","reported_name":"Davis Smith W","relationship":{"director":true}}],"security":"Common Stock","published_at":"2019-09-03T14:55:43.000Z","date":"2019-08-30","kind":"grant","acquired":true,"shares":127,"price":253.77,"value":32228.79,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Common stock units were accrued under the Martin Marietta Materials, Inc. Common Stock Purchase Plan for Directors (the \"Plan\") and are to be settled in stock in a lump sum or in installments not to exceed 10 years commencing on (i) the date the reporting person ceases to be a Non-Employee Director, (ii) the date that is one month and one year following the date the reporting person ceases to be a Non-Employee Director, or (iii) the date elected by the Non-Employee Director that is later than the third anniversary of the date the fees are earned, in accordance with the reporting person's election under the Plan."}],"balance_after":2112,"source":{"system":"sec-edgar","filing":"0001127602-19-027668","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/916076/000112760219027668/form4.xml","form_type":"4"}},{"id":3505502,"issuer":{"id":587,"kind":"organization","name":"MARTIN MARIETTA MATERIALS INC","symbol":"MLM"},"owners":[{"id":116267,"kind":"person","name":"Davis Smith W","position":1,"cik":"0001741178","reported_name":"Davis Smith W","relationship":{"director":true}}],"security":"Common Stock","published_at":"2019-06-03T22:01:25.000Z","date":"2019-05-31","kind":"grant","acquired":true,"shares":153,"price":210.5,"value":32206.5,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Common stock units were accrued under the Martin Marietta Materials, Inc. Common Stock Purchase Plan for Directors (the \"Plan\") and are to be settled in stock in a lump sum or in installments not to exceed 10 years commencing on (i) the date the reporting person ceases to be a Non-Employee Director, (ii) the date that is one month and one year following the date the reporting person ceases to be a Non-Employee Director, or (iii) the date elected by the Non-Employee Director that is later than the third anniversary of the date the fees are earned, in accordance with the reporting person's election under the Plan."}],"balance_after":1985,"source":{"system":"sec-edgar","filing":"0001127602-19-020557","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/916076/000112760219020557/form4.xml","form_type":"4"}},{"id":3530529,"issuer":{"id":587,"kind":"organization","name":"MARTIN MARIETTA MATERIALS INC","symbol":"MLM"},"owners":[{"id":116267,"kind":"person","name":"Davis Smith W","position":1,"cik":"0001741178","reported_name":"Davis Smith W","relationship":{"director":true}}],"security":"Common Stock","published_at":"2019-05-13T16:17:21.000Z","date":"2019-05-09","kind":"grant","acquired":true,"shares":600,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":1832,"source":{"system":"sec-edgar","filing":"0001127602-19-018245","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/916076/000112760219018245/form4.xml","form_type":"4"}},{"id":3624467,"issuer":{"id":587,"kind":"organization","name":"MARTIN MARIETTA MATERIALS INC","symbol":"MLM"},"owners":[{"id":116267,"kind":"person","name":"Davis Smith W","position":1,"cik":"0001741178","reported_name":"Davis Smith W","relationship":{"director":true}}],"security":"Common Stock","published_at":"2019-03-01T19:10:32.000Z","date":"2019-02-28","kind":"grant","acquired":true,"shares":160,"price":187.8,"value":30048.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Common stock units were accrued under the Martin Marietta Materials, Inc. Common Stock Purchase Plan for Directors (the \"Plan\") and are to be settled in stock in a lump sum or in installments not to exceed 10 years commencing on (i) the date the reporting person ceases to be a Non-Employee Director, (ii) the date that is one month and one year following the date the reporting person ceases to be a Non-Employee Director, or (iii) the date elected by the Non-Employee Director that is later than the third anniversary of the date the fees are earned, in accordance with the reporting person's election under the Plan."}],"balance_after":1232,"source":{"system":"sec-edgar","filing":"0001127602-19-009159","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/916076/000112760219009159/form4.xml","form_type":"4"}},{"id":3744768,"issuer":{"id":587,"kind":"organization","name":"MARTIN MARIETTA MATERIALS INC","symbol":"MLM"},"owners":[{"id":116267,"kind":"person","name":"Davis Smith W","position":1,"cik":"0001741178","reported_name":"Davis Smith W","relationship":{"director":true}}],"security":"Common Stock","published_at":"2018-12-04T21:13:19.000Z","date":"2018-11-30","kind":"grant","acquired":true,"shares":164,"price":190.69,"value":31273.16,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Common stock units were accrued under the Martin Marietta Materials, Inc. Common Stock Purchase Plan for Directors (the \"Plan\") and are to be settled in stock in a lump sum or in installments not to exceed 10 years commencing on (i) the date the reporting person ceases to be a Non-Employee Director, (ii) the date that is one month and one year following the date the reporting person ceases to be a Non-Employee Director, or (iii) the date elected by the Non-Employee Director that is later than the third anniversary of the date the fees are earned, in accordance with the reporting person's election under the Plan."}],"balance_after":1072,"source":{"system":"sec-edgar","filing":"0001127602-18-035085","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/916076/000112760218035085/form4.xml","form_type":"4"}},{"id":3826097,"issuer":{"id":587,"kind":"organization","name":"MARTIN MARIETTA MATERIALS INC","symbol":"MLM"},"owners":[{"id":116267,"kind":"person","name":"Davis Smith W","position":1,"cik":"0001741178","reported_name":"Davis Smith W","relationship":{"director":true}}],"security":"Common Stock","published_at":"2018-09-05T16:33:07.000Z","date":"2018-08-31","kind":"grant","acquired":true,"shares":158,"price":198.72,"value":31397.76,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Common stock units were accrued under the Martin Marietta Materials, Inc. Common Stock Purchase Plan for Directors (the \"Plan\") and are to be settled in stock in a lump sum or in installments not to exceed 10 years commencing on (i) the date the reporting person ceases to be a Non-Employee Director, (ii) the date that is one month and one year following the date the reporting person ceases to be a Non-Employee Director, or (iii) the date elected by the Non-Employee Director that is later than the third anniversary of the date the fees are earned, in accordance with the reporting person's election under the Plan."}],"balance_after":908,"source":{"system":"sec-edgar","filing":"0001127602-18-026756","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/916076/000112760218026756/form4.xml","form_type":"4"}},{"id":3897494,"issuer":{"id":587,"kind":"organization","name":"MARTIN MARIETTA MATERIALS INC","symbol":"MLM"},"owners":[{"id":116267,"kind":"person","name":"Davis Smith W","position":1,"cik":"0001741178","reported_name":"Davis Smith W","relationship":{"director":true}}],"security":"Common Stock","published_at":"2018-06-12T14:32:23.000Z","date":"2018-06-11","kind":"grant","acquired":true,"shares":141,"price":222.87,"value":31424.67,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Common stock units were accrued under the Martin Marietta Materials, Inc. Common Stock Purchase Plan for Directors (the \"Plan\") and are to be settled in stock in a lump sum or in installments not to exceed 10 years commencing on (i) the date the reporting person ceases to be a Non-Employee Director, (ii) the date that is one month and one year following the date the reporting person ceases to be a Non-Employee Director, or (iii) the date elected by the Non-Employee Director that is later than the third anniversary of the date the fees are earned, in accordance with the reporting person's election under the Plan."}],"balance_after":750,"source":{"system":"sec-edgar","filing":"0001127602-18-020657","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/916076/000112760218020657/form4.xml","form_type":"4"}},{"id":3926584,"issuer":{"id":587,"kind":"organization","name":"MARTIN MARIETTA MATERIALS INC","symbol":"MLM"},"owners":[{"id":116267,"kind":"person","name":"Davis Smith W","position":1,"cik":"0001741178","reported_name":"Davis Smith W","relationship":{"director":true}}],"security":"Common Stock","published_at":"2018-05-18T17:32:25.000Z","date":"2018-05-17","kind":"grant","acquired":true,"shares":609,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":609,"source":{"system":"sec-edgar","filing":"0001127602-18-018063","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/916076/000112760218018063/form4.xml","form_type":"4"}}]}