Central and Eastern Europe-focused private equity fund manager Mid Europa Partners has agreed to sell Czech Republic-based dietary supplements manufacturer Walmark to STADA Arzneimittel, a Germany-based pharmaceutical company. Walmark currently offers a portfolio of vitamin, mineral, and dietary supplement brands across nine countries in Central and Eastern Europe. Mid Europa originally acquired a 50 percent stake in Walmark in 2012 before subsequently buying out the company’s original family ownership group in 2016. Financial details of the transaction, which is subject to regulatory approval, were not disclosed.