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NASDAQ: SHC Sotera Health Co 8-K

Sotera Health appoints Alton Shader as CEO, Petras transitions to Executive Chairman

Filed May 5, 2026 · Period ending April 30, 2026 · ~1 min read

Key Changes

  • high

    Alton Shader appointed CEO effective May 26, 2026. Shader, 52, brings 20+ years medical device leadership experience, most recently as CEO of Viant Medical since 2019.

  • high

    Michael Petras transitions from CEO to Executive Chairman role, remaining on Board as Class I director and executive officer, ensuring leadership continuity during succession.

  • medium

    New CEO compensation: $1M base salary, 110% target bonus, $6M sign-on RSUs, and ~$8.1M in 2026 equity awards. Annual long-term incentives of $6.5M+ starting 2027.

2 more material changes behind this preview — plus the full narrative summary, section-by-section diffs against the prior filing, and verbatim quotes with EDGAR citations.

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Source-verified from EDGAR · Narrative written by AI · Jun 2, 2026 · How we verify