Viatris Inc. (NASDAQ: VTRS) announced that Chief Financial Officer Theodora "Doretta" Mistras will leave the company for a new professional opportunity, with Paul Campbell, currently Chief Accounting Officer and Corporate Controller, taking over as interim CFO effective May 8.

Mistras will remain with the Pittsburgh-based healthcare company until May 22 to facilitate the transition while Viatris conducts a search for a permanent successor.

"We thank Doretta for her significant contributions, which have helped prepare the Company to enter a period of sustainable future growth," said Scott A. Smith, CEO of Viatris.

Campbell brings more than two decades of experience in accounting and financial operations to the interim role. He has overseen Viatris' global accounting and finance operations in his current position and joined the company's legacy firm Mylan in 2002.

During his tenure at Mylan and later Viatris, Campbell held positions of increasing responsibility across internal audit, business development, corporate development and operations finance. He previously served as Mylan's Chief Accounting Officer, Senior Vice President and Controller.

Before joining Mylan, Campbell spent nearly a decade at Deloitte & Touche as a Senior Manager in Audit. He holds a Bachelor of Science in Accounting from Pennsylvania State University.

Viatris will release first quarter 2026 financial results on May 7 and host a conference call at 8:30 a.m. ET to discuss the results.

The company manufactures generic drugs, established brands and innovative medicines, with headquarters in the United States and global centers in Pittsburgh, Shanghai and Hyderabad.