Starbucks Shakes Up Executive Ranks in Bid to Revive Sales (2)

Starbucks Corp. is reorganizing its top ranks as part of Chief Executive Officer Brian Niccol’s plan to win back customers by speeding up service and making cafes feel more upscale.

The company said it’s adopting a new model for its retail operations with clearer accountability for how stores perform, Brian Niccol said in a letter to workers on Tuesday. Starbucks is splitting the scope of the roles held by Sara Trilling, president of North America, and Arthur Valdez, chief supply and customer solutions officer, who are leaving the company.

Starbucks hired Mike Grams as North America chief ...