A longtime Starbucks (SBUX) executive is retiring as CEO Brian Niccol tries to turn around the flagging coffee chain. On Monday, Starbucks North America CEO Michael Conway, 58, announced plans to retire.

Starbucks officially has a new CEO, with Brian Niccol taking over the top job Monday. Here are challenges he is facing that have hampered Starbucks' sales and stock price in recent months.

We caught up with three experts to weigh in on what leaderships lessons Brian Niccol can apply as he takes over as CEO of Starbucks.

Niccol says there was a sense around Starbucks that the coffee giant had "drifted from its core." Starbucks CEO Brian Niccol had his first day on the job Monday — and yes, he was in the company's Seattle headquarters.

In a new memo, Niccol offers a clinical deconstruction of what’s going wrong at the coffee chain—and hints as to how he plans to make it right.

In an open letter to Starbucks customers, employees, and investors, Niccol admitted that the company has “drifted from its core”

Starbucks ( SBUX) new CEO Brian Niccol is brewing up a new chapter for the coffee chain as it focuses on its origins.

Michael Conway will be retiring at the end of November, according to a Monday filing. His position won’t be filled.

Michael Conway, Starbucks’s North American chief executive, plans to retire Nov. 30 after only about eight months in the role. Conway informed the coffee chain of his decision on Thursday, according to a Monday filing with the Securities and Exchange Commission.