Expedia has promoted finance chief Mark Okerstrom to CEO. He succeeds Dara Khosrowshahi, who has been named CEO of Uber. Okerstrom had been CFO and executive vice president of operations for the past six years. Expedia’s new finance chief is Alan Pickerill, senior vice president, treasurer, and head of investor relations. Pickerill has been with the company since 2008.

Energy firm The Williams Cos. has named John Chandler to the top finance spot. He takes over from Don Chappel, who had earlier announced his retirement. Chandler formerly headed finance at Magellan Midstream Partners.

LendingTree has promoted J.D. Moriarty to finance chief. Moriarty, who replaces Gabe Dalporto, joined the online loan marketplace earlier this year as senior vice president of corporate development.

John Chandler, Williams Cos.

Andrew Smith, who heads finance at tank-barge operator Kirby, has announced that he will resign, effective Sept. 7. President and CEO David Grzebinski will become interim CFO until Smith’s successor is found.

Work-truck equipment manufacturer Douglas Dynamics has promoted finance chief Robert McCormick to chief operating officer. Sarah Lauber, who previously led the finance function at Jason Industries, will replace him as CFO.

Medical-device supplier Abiomed has said that CFO Michael Tomsicek has resigned. Former finance chief Robert Bowen, who held the top finance spot from December 2008 until July 2015, will serve as a consultant while the firm searches for a permanent CFO, while corporate controller Ian McLeod will serve as interim principal financial officer and interim principal accounting officer.

L.B. Foster has named James Maloney CFO and treasurer, effective Sept. 18. He comes to the manufacturer and distributor of products for the rail, utility, construction, and energy markets from First Insight, where he also headed finance.

Technology-products provider ScanSource has promoted Gerald Lyons to the top finance spot. He joined the firm in 2007 and has been interim CFO since last November.

Steven Sigal has been appointed finance chief at Health New England. He previously led the finance function at Access Health CT in Hartford, Conn.

Inseego has named Stephen Smith to head finance. He takes over for Tom Allen, who had been interim CFO since May. Smith is a former interim CFO of TetraVue and a former CFO and head of operations at Micropower Technologies.