Starbucks plans to close 28 locations in Washington, including 10 in Seattle, as part of a company turnaround strategy.

Starbucks CTO Deb Hall Lefevre has resigned, according to a report from Reuters, as the Seattle-based company navigates

The Starbucks Reserve Roastery in Seattle's Capitol Hill neighborhood has closed, a move the company said is part of a broader plan that includes the closure of other North American coffeehouses and the elimination of hundreds of non-retail roles.

Starbucks is permanently closing its Seattle Reserve Roastery, the company's first roastery, located on Capitol Hill.

Starbucks said on Thursday it would close underperforming stores in North America, including its iconic Seattle roastery, as CEO Brian Niccol presses ahead with his restructuring effort, which is expected to cost $1 billion in a bid to revive the company's flagging sales.

The coffee giant is also laying off 900 non-retail workers and closing 1 percent of its stores in the U.S. and Canada.