Two top Walmart executives leave company under new CEO John Furner

Key points

• Two top Walmart executives are departing the company, nearly four months after CEO John Furner took over, according to internal memos viewed by CNBC on Friday.
• Tom Ward, the chief operating officer of Walmart's warehouse chain Sam's Club, is retiring, and Cedric Clark, Walmart's executive vice president of U.S. store operations, is leaving the business, the memos show.
• A replacement for Clark is expected to be announced in the "coming weeks," the memo said.
• It's unclear when the company expects to fill Ward's position.
• The leadership shuffle comes after Furner took over as Walmart's CEO in February.