Since joining the retailer in 1996, McKenna managed several departments before being appointed chief financial officer in 2001. She became chief operating officer at the end of June 2011.
Before this she held financial roles at Carlsbery Tetley and spirits and wine company Allied Domecq.
City analyst Shore Capital said that Asda’s loss was Wal-Mart’s gain.
“She played a key role in the acquisition and integration of Netto, a move we see as a successful and necessary extension of the business’ format capabilities,” said Clive Black, analyst at Shore Capital. “As a prior financial director as Asda, she has a strong sense of broader performance rigours and requirements. As such, we deem Ms.McKenna to be a loss to Asda,” he added.
In addition to McKenna’s relocation to America, Asda also announced a series of other management changes.
Mark Ibboston has been appointed retail director responsible for distribution, retail and online grocery sales, Steve Smith takes up responsibility for Asda’s embryonic financial services activities alongside his marketing role, and Karen Hubbard will look after non-food online.