Mark Walchirk

Incoming CEO

Patterson Companies Inc.




Patterson Cos., a Mendota Heights-based maker of dental and veterinary supplies, was a surprise addition to Minnesota’s list of Fortune 500 companies in 2017. A phenomenal fiscal 2016 saw sales of Patterson’s veterinary products roughly doubled, but 2017’s result was by no means as positive. In June 2017, Patterson lost two of its top leaders: CEO Scott Anderson and John Adent, the CEO of Patterson Animal Health. Mark Walchirk takes the reins as this issue goes to press, charged with stabilizing the company and, ideally, retaining its place in the Fortune 500.