Northrop Grumman taps new CFO

Falls Church-based Fortune Global 500 aerospace and defense company Northrop Grumman announced Thursday that its board of directors has chosen former Discover Financial executive John Greene as its corporate vice president and chief financial officer, effective Jan. 7, 2026.

In this role, he will report to Kathy Warden, the government contractor‘s president and CEO. He will succeed Ken Crews, who previously announced his intent to leave the company to pursue other interests.

Once Greene joins the company, Crews will step down from the CFO position and temporarily serve in an advisory capacity to ensure a smooth transition before leaving the company on Feb. 20, 2026.

“John is a seasoned finance executive with a distinguished record of global leadership and deep experience across complex, highly regulated industries,” said Warden in a statement. “He has consistently managed strategic capital deployment, operational discipline and shareholder value creation.”

Greene most recently served as CFO for Discover Financial Services, a role he held for six years before the company was acquired by Capital One in May. Before that, he was CFO of the global pharmaceutical company Bioverativ, as well as Willis Group Holdings and multiple business units within HSBC Holdings, including retail bank and wealth management. Greene started his career at Ernst & Young and later worked for 12 years at General Electric.

He holds a bachelor’s degree from the State University of New York and an MBA from Northwestern University’s Kellogg School of Management.

Ranked No. 380 on the Fortune Global 500 this year, Northrop Grumman reported $41 billion in fiscal 2024 revenue, up 4% from 2023. Northrop Grumman employs about 100,000 workers and is building a $200 million-plus plant in Waynesboro that’s expected to open in 2026.