Viatris CFO Theodora Mistras resigns to pursue new opportunity; CAO Paul Campbell named interim

Filed May 4, 2026 · Period ending May 1, 2026 · ~1 min read

Key Changes

• high

  CFO Theodora Mistras voluntarily resigned effective May 8, 2026 to pursue another professional opportunity. She will remain employed through May 22 for transition purposes. The company explicitly stated her departure was not related to any disagreement on accounting, financial statements, internal controls, or operations.

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• high

  Paul Campbell, current Chief Accounting Officer and Corporate Controller, appointed interim CFO effective May 8, 2026. Campbell has been with Viatris since the 2020 Mylan-Pfizer Upjohn combination and with Mylan since 2002 in roles of increasing responsibility.

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• medium

  Mistras will not receive severance or accelerated equity vesting. She is eligible only for a pro-rated 2026 bonus based on actual performance capped at target, contingent on providing a release of claims and complying with restrictive covenants.

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