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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
916076	Martin Marietta Materials Inc	MLM	Mining & Quarrying Of Nonmetallic Minerals (No Fuels) (1400)	561848578

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1084501	Jr P Stephen Zelnak	2710 Wycliff Road Raleigh NC 27607		Yes	No	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Acquisiton	2015-06-30	15	$143.14	52,769	No	4	P	Direct
Common Stock	Acquisiton	2015-09-30	15	$149.95	52,878	No	4	P	Direct
Common Stock	Acquisiton	2015-12-31	16	$136.94	35,994	No	4	P	Direct
Common Stock	Acquisiton	2016-03-31	13	$154.78	36,118	No	4	P	Direct
Common Stock	Acquisiton	2016-03-31	1	$154.77	36,119	No	4	P	Direct
Common Stock	Acquisiton	2016-06-30	12	$186.08	16,762	No	4	P	Direct
Common Stock	Acquisiton	2016-09-30	6	$182.66	16,860	No	4	P	Direct
Common Stock	Acquisiton	2016-12-30	5	$226.41	16,942	No	4	P	Direct
Common Stock	Acquisiton	2017-03-31	5	$214.04	17,026	No	4	P	Direct
Common Stock	Acquisiton	2017-06-30	5	$222.13	17,544	No	4	P	Direct
Common Stock	Acquisiton	2017-09-29	6	$205.96	17,630	No	4	P	Direct
Common Stock	Acquisiton	2017-12-29	5	$218.05	17,716	No	4	P	Direct
Common Stock	Acquisiton	2018-03-29	6	$202.93	17,805	No	4	P	Direct
Common Stock	Acquisiton	2018-06-29	5	$222.48	18,495	No	4	P	Direct
Common Stock	Acquisiton	2018-09-28	7	$185.91	22,087	No	4	P	Direct
Common Stock	Acquisiton	2018-12-31	7	$168.81	22,183	No	4	P	Direct
Common Stock	Acquisiton	2019-03-29	6	$200.34	22,279	No	4	P	Direct
Common Stock	Acquisiton	2019-06-28	6	$226.65	22,966	No	4	P	Direct
Common Stock	Acquisiton	2019-09-30	5	$271.29	23,038	No	4	P	Direct
Common Stock	Acquisiton	2019-12-31	5	$277.43	23,106	No	4	P	Direct
Common Stock	Acquisiton	2020-03-31	8	$177.24	23,190	No	4	P	Direct
Common Stock	Disposition	2020-06-05	3,500	$226.80	19,690	No	4	S	Direct
Common Stock	Disposition	2020-06-05	13,385	$225.23	6,305	No	4	S	Direct
Common Stock	Disposition	2020-06-10	1,350	$207.74	4,955	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct

Footnotes

Represents shares acquired by the Reporting Person under an automatic dividend reinvestment program through his broker for quarterly cash dividends paid by the Issuer to stockholders in 2015, 2016, 2017, 2018, 2019 and 2020. These transactions should have been previously reported on Form 4 or Form 5, as applicable, and were inadvertently reported late by the Reporting Person.
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $225.2131 to $225.32, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (1) to this Form 4.