Sears' corporate suite continued to roil last month with the departures and appointments of several key senior executives.

Chief marketing officer Maureen McGuire left the company for "personal reasons," the company said, and was succeeded by Richard Gerstein, who headed marketing for Sears.

Gerstein's counterpart at Kmart, Bill Stewart, left Sears in June to work as a campaign volunteer in California and has not been replaced.

Elsewhere, Stu Reed, former president of Motorola's mobile devices division, joined the retailer as president of its home services division. He succeeds Mark Good, who led the unit since 1999. No reason was given for his departure.

In addition, Procter & Gamble veteran Guenther Trieb was named president of Kenmore, Craftsman and DieHard, with responsibility for "overseeing and working to grow the value" of the retailer's private label hardlines brands.

The moves follow a long line of changes at Sears since chairman Eddie Lampert merged it with Kmart in 2005 — including the departure in January of CEO Aylwin Lewis. That position remains open, with former supply chain chief Bruce Johnson serving as interim CEO.