FORM 8-K

Company

MARTIN MARIETTA MATERIALS INC

Filed

April 27, 2009

Period of Report

April 21, 2009

Accession Number

0000950144-09-003549

An 8-K is a current report used to announce material events that shareholders should know about — such as earnings releases, mergers, executive changes, or bankruptcy. Learn more about 8-K filings →