Walgreens Boots Alliance, Inc (WBA  ) has appointed Tim Wentworth as its new Chief Executive Officer, effective October 23.

Wentworth will also join the WBA Board of Directors upon assuming the role.

Walgreens has found itself needing a new chief after Brewer, an established figure in the retail sector, left her position unexpectedly at the end of August, following a brief tenure of two-and-a-half years.

Most recently, as founding CEO of Evernorth, Cigna Group's (CI  ) health services organization, Wentworth brought together health service capabilities, including care provision, pharmacy solutions, and benefits management.

Prior to Cigna, Wentworth was CEO of Express Scripts, a pharmacy benefit manager in the U.S.

Wentworth joins WBA at a time when the company focuses on right-sizing the business, while driving execution and creating greater value for employees, patients, customers and shareholders.

"We are confident he is the right person to lead WBA's next phase of growth into a customer-centric healthcare company," said Stefano Pessina, Executive Chairman, WBA.

Price Action: WBA shares are trading higher by 1.43% at $22.70 in premarket on the last check Wednesday.