The Riverside Company, a global private investor focused on the smaller end of the middle market, completed the investment in OutSolve, a provider of outsourced labor and employment compliance solutions. Financial terms were not disclosed. "We are excited to partner with the OutSolve team. The company’s end markets are supported by strong regulatory tailwinds as well as the broader corporate move towards DE&I, ESG and social responsibility, which are all critically important. These fundamentals provide a robust platform for growth as we look to expand into adjacent service offerings and new end markets," Drew Flanigan, Riverside Partner.