Lockheed Martin announced that its board of directors asked for the resignation of Christopher E. Kubasik, 51, the current chief operating officer and incoming chief executive office.

"Kubasik, previously slated to become CEO in January, resigned after an ethics investigation confirmed that he had a close personal relationship with a subordinate employee," Lockeheed said in a statement. "His actions violated the company's Code of Ethics and Business Conduct, but did not affect the company's operational or financial performance."

Marillyn A. Hewson, 58, president and COO, will become CEO on Jan. 1.

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