Viatris CFO Departure Tests Financial Continuity at Critical Juncture

Viatris is navigating a senior finance leadership change at a moment when capital allocation decisions across its generics and established brands portfolio carry significant operational weight. Theodora "Doretta" Mistras, Chief Financial Officer, will depart the company for an external opportunity, with her last day set for May 22, 2026. The transition lands one week before the company releases Q1 2026 financial results, placing immediate pressure on continuity of financial oversight and investor-facing communications.

Paul Campbell, currently Chief Accounting Officer and Corporate Controller, has been named interim CFO effective May 8, 2026, while Viatris conducts a permanent successor search. Campbell joined Mylan, a Viatris legacy company, in 2002 and has held roles spanning internal audit, business development, corporate development, and operations finance. He previously served as Mylan's Chief Accounting Officer, Senior Vice President and Controller before assuming his current position overseeing global accounting and finance operations at Viatris. Earlier in his career, Campbell spent nearly a decade at Deloitte and Touche as a Senior Manager in Audit. He holds a Bachelor of Science in Accounting from Pennsylvania State University.

For plant heads and QA directors tracking capital investment cycles, the identity and priorities of incoming financial leadership at a manufacturer of Viatris's scale directly influence budget approvals for manufacturing infrastructure, process validation programs, and supply chain resilience initiatives. CEO Scott A. Smith cited Campbell's "deep knowledge of Viatris" and emphasis on "operational discipline" as the basis for the interim appointment, language that signals a preference for continuity over strategic repositioning in the near term.

Viatris will release Q1 2026 financial results on May 7, 2026, and host a conference call at 8:30 a.m. ET. The permanent CFO search is ongoing. Source: Viatris press release, May 4, 2026.