St. Thomas Academy, a Mendota Heights private preparatory school, announced Karsten Williams as chief financial officer and that Luke Marks has been promoted to dean of students. Williams most recently served as treasurer for Lime, and has held similar positions at Patterson Cos., Syngenta, G&K Services, Sleep Number and U.S. Bank. Marks, a 2011 St. Thomas grad, has served the school as a football and lacrosse coach and most recently as an English teacher since 2020.

Deluxe, a Minneapolis-based business services and technology company, announced the election of Michelle T. Collins to its board of directors. Collins is a retired Deloitte partner and served as vice chair and a member of Deloitte’s U.S. board of directors.

Essentia Health, a Duluth-based operator of hospitals and clinics, a

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