The Riverside Company, a global private investor focused on the smaller end of the middle market, completed the investment in First Advantage Consulting Firm, a provider of training, consulting services, and outsourcing. Financial terms were not disclosed. "This acquisition aligns with OutSolve’s mission to scale its core AAP compliance capabilities and expand its offerings. It also reaffirms OutSolve’s position as one of the largest, fastest growing providers in the industry. Under our partnership, we will continue to look to expand into adjacent service offerings and new end markets," Drew Flanigan, Riverside Partner.