Fortune 500 Power MovesTheodora "Doretta" Mistras, CFO of Viatris Inc. (
No. 298), a global pharmaceutical company, will depart the company for a new professional opportunity.
Paul Campbell, currently chief accounting officer and corporate controller, will serve as interim CFO, effective May 8, while the company conducts its search for a permanent successor. Mistras will remain at Viatris until May 22, for a transition period.
Every Friday morning, the weekly Fortune 500 Power Moves column tracks Fortune 500 company C-suite shifts—see the most recent edition.More notable moves this week: Michelle Hook was appointed CFO of
Shake Shack Inc. (NYSE: SHAK), effective May 11. Hook brings more than two decades of experience in the restaurant industry. She joins Shake Shack from Portillo’s, where she served as CFO beginning in December 2020. In that role, she helped take the company public in 2021. Previously, Hook spent more than 17 years at Domino’s Pizza, Inc., where she most recently served as VP of finance for global FP&A and investor relations, and held various accounting and finance leadership positions.
Chris Monroe was appointed EVP and CFO of
CEC Entertainment, LLC, the parent company of Chuck E. Cheese and Peter Piper Pizza. Monroe brings more than 30 years of experience across the restaurant, aviation, and defense sectors. Monroe most recently served as CFO of Texas Roadhouse. Before that, Monroe spent more than three decades at Southwest Airlines, ultimately serving as SVP of finance, treasurer, and sustainability.
Paul DiCicco was appointed EVP, CFO, and treasurer of
Madison Square Garden Sports Corp. (NYSE: MSGS), effective May 11. DiCicco has 30 years of experience. He joins MSG Sports from Stephen Gould Corporation, where he served as CFO. Before that, DiCicco was at Harris Blitzer Sports and Entertainment, where he served as SVP and corporate controller. DiCicco’s experience also includes various senior finance and accounting roles at both public and private companies in the U.S. and Asia.
Jennifer Kartychak was promoted to CFO of
Worksport Ltd. (Nasdaq: WKSP) a manufacturer of hybrid and clean energy solutions, effective May 1. Kartychak has worked with Worksport since August 2023 through Arend Advisory Group, LLC, an entity wholly owned by her, before joining the company full-time as VP of finance on Jan. 1, 2026. Kartychak brings over 25 years of accounting experience.
Michael Mioska was appointed CFO of
Birchtech Corp. (NYSE American: BCHT), an activated carbon technology provider. Mioska has over 20 years of accounting, audit, and financial reporting experience. Mioska has been an independent consultant providing finance, financial reporting, and M&A advisory-related services to a range of public companies since 2021, including Birchtech since 2023. Before that, Mioska worked at a public accounting firm in Vancouver, BC providing similar finance services since 2005.
Jorge Beristain was appointed CFO of
Almonty Industries Inc. (Nasdaq: ALM) a global producer of tungsten, effective June 1. Brian Fox has departed from his role as CFO effective immediately. Until Beristain’s start date, Guillaume de Lamaziere, the company’s chief development officer, will serve as interim CFO. Beristain most recently served as VP of finance at Ryerson Holding Corp. He previously served as CFO of Central Steel & Wire Co.
Kari Wimmer was appointed CFO of
Couchbase, Inc., an operational data platform for AI. Wimmer brings more than two decades of experience in corporate finance, M&A, and strategic development. She joins the company from Intellistack, where she also served as CFO. Previously, Wimmer served in senior executive roles at Businessolver, P2 Energy Solutions, and Arrow Electronics.