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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
1084489	Jr H Frank Menaker	Dla Piper 500 Eighth St., N.w. Washington DC 20004		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	2011-05-12	2,000	$0.00	11,531	No	4	M	Direct
Common Stock	Disposition	2011-05-12	300	$86.95	11,231	No	4	S	Direct
Common Stock	Disposition	2011-05-12	800	$86.93	10,431	No	4	S	Direct
Common Stock	Disposition	2011-05-12	200	$86.92	10,231	No	4	S	Direct
Common Stock	Disposition	2011-05-12	700	$86.91	9,531	No	4	S	Direct
Common Stock	Acquisiton	2011-05-12	540	$69.52	10,071	No	4	A	Direct
Common Stock	Acquisiton	2011-05-12	1,266	$0.00	11,337	No	4	A	Direct

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

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Stock Options (Right to Buy)	Disposition	2011-05-12	2,000	$0.00	2,000	$43.58

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
0		2011-08-16	No	4	M	Direct

Footnotes

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 or (ii) the date that is one month and one year following the date the reporting person ceases to be a Non-Employee Director, in accordance with the reporting person's election under the Plan.
Non-qualified stock option award granted under the Martin Marietta Materials, Inc. Amended and Restated Stock-Based Award Plan. Options are exercisable immediately.