Lockheed Martin (LMT) 8-K Departure of Directors or Certain Officers

Exhibit 99.1

Lockheed Martin Corporation

6801 Rockledge Drive Bethesda, MD 20817

Telephone 301-897-6000

Kenneth R. Possenriede

Chief Financial Officer

August 3, 2021

James D. Taiclet

Chairman, President and Chief Executive Officer

Lockheed Martin Corporation

6801 Rockledge Drive

Bethesda, Maryland 20817

Dear Jim:

I have decided to retire from the Company.

Effective today, I am resigning my position as Chief Financial Officer of Lockheed Martin Corporation and as a director of any subsidiaries.

Sincerely,

/s/ Kenneth R. Possenriede

Kenneth R. Possenriede

cc: Maryanne R. Lavan, Senior Vice President, General Counsel and Corporate Secretary