December 31, 2011 As of December 31, 2011, there were approximately 35,426 holders of record of Lockheed Martin common stock and 323,367,990 shares outstanding. Lockheed Martin Direct Invest, our direct stock purchase and dividend reinvestment plan, provides new investors and current stockholders with a convenient, cost-effective way to purchase Lockheed Martin common stock, increase holdings and manage the investment. For more information about Lockheed Martin Direct Invest, contact our transfer agent, Computershare Trust Company, N.A. at 1-877-498-8861, or to view plan materials online and enroll electronically, go to: www.computershare.com/investor Stock symbol: LMT Listed: New York Stock Exchange (NYSE) The CEO/CFO certifications required to be filed with the SEC pursuant to Section 302 of the Sarbanes-Oxley Act are included as Exhibits 31.1 and 31.2 to our 2011 Form 10-K, and are included in this Annual Report. In addition, an annual CEO certification regarding compliance with the NYSE’s Corporate Governance listing standards was submitted by our Chairman and CEO to the NYSE on May 24, 2011. Financial results, stock quotes, dividend news as well as other Lockheed Martin information are available by calling the toll-free number: 1-800-568-9758. A directory of available information will be read to the caller and certain of the information can also be received by mail, fax or E-mail. You may also reach Shareholder Services for account information or Investor Relations for additional information on Lockheed Martin via the toll-free number: 1-800-568-9758. GENERAL INFORMATION TRANSFER AGENT & REGISTRAR 2011 FORM 10-K Our 2011 Form 10-K is included in this Annual Report in its entirety with the exception of certain exhibits. All of the exhibits may be obtained on our Investor Relations homepage at www.lockheedmartin.com/investor or by accessing our SEC filings. In addition, stockholders may obtain a paper copy of any exhibit or a copy of the Form 10-K by writing to: Jerome F. Kircher III — Vice President, Investor Relations Lockheed Martin Corporation Investor Relations Department MP 280 6801 Rockledge Drive, Bethesda, MD 20817 Ernst & Young LLP 8484 Westpark Drive McLean, VA 22102 Computershare Trust Company, N.A. Shareholder Services P.O. Box 43078 Providence, Rhode Island 02940-3078 Telephone: 1-877-498-8861 TDD for the hearing impaired: 1-800-952-9245 Internet: http://www.computershare.com/investor DIVIDEND REINVESTMENT PLAN INDEPENDENT AUDITORS COMMON STOCK