Walgreens Boots Alliance said Rosalind Brewer is stepping down as chief executive officer effectively immediately amid the drugstore giant’s flagging share price and a multi-billion transformation to provide more healthcare services.

The company Friday morning said “the Board of Directors and Rosalind Brewer have mutually agreed that Ms. Brewer will step down as the Company’s Chief Executive Officer (CEO) and as a member of the Board, as of August 31, 2023.”

The Board has appointed Ginger Graham, current Lead Independent Director of WBA, as the Company’s interim CEO. Ms. Brewer has agreed to continue to advise WBA while the Company conducts a search for a permanent CEO,” Walgreens said.

“On behalf of the entire Board, I would like to thank Roz for her contributions to WBA. Roz navigated the Company through the global pandemic, overseeing the critical rollout of vaccines in Walgreens pharmacies and to high-risk populations across the country,” Walgreens executive chairman Stefano Pessina, the Italian billionaire who preceded Brewer as CEO and was instrumental in her hiring.

“She furthered our consumer facing capabilities while supporting the culture of community and team-member engagement in difficult times,” Pessina added. “We appreciate her hard work and commitment to the Company during this period of unprecedented change.”