Bethesda-based government contracting giant Lockheed Martin said Thursday two of its top officials, including Linda Gooden, who leads the local information systems business, will retire.

The moves follow the arrival of Marillyn A. Hewson, who took over as chief executive just weeks ago.

Lockheed said Thursday that Sondra L. Barbour, 50, will become executive vice president of its information systems and global solutions unit, taking over for Gooden, 59.

Rick F. Ambrose, 54, is to take over for Joanne Maguire, 58, who will retire from the top job at Lockheed’s space systems unit. The appointments are effective April 1.

Hewson said the retirements have nothing to do with her arrival as CEO.

“Joanne and Linda have been contemplating retirement for some time,” she said in a call with reporters early Thursday.

Barbour has served as chief information officer since 2008 and previously spent more than two decades in the IS&GS unit. Ambrose, who came to Lockheed in 2000, has served as Maguire’s deputy at space systems.     

Thursday, the company reported fourth-quarter earnings for the three-month period ended Dec. 31 of $569 million ($1.73 per share), down nearly 17 percent from $683 million ($2.09) in the same period a year earlier. Revenue declined slightly to just under $12.1 billion.