WM Partners, a middle-market private equity firm, completed the acquisition of Allergy Research Group, an allergy-oriented, hypoallergenic nutritional supplement company, from Kikkoman, a Japanese food manufacturer. Financial terms were not disclosed. "We are thrilled to work with ARG, which is well-positioned to continue gaining market share in the fast-growing healthcare practitioner channel and where through our operational toolkit across marketing, product innovation, sales, operations, finance, we can help optimize and grow the company as well as strengthen its footprint," Eli Minski, WM Partners Senior Vice President.