Apax Partners, a private equity firm, agreed to acquire Zellis Group, an HR and payroll solutions provider, from Bain Capital, a private investment firm. Financial terms were not disclosed. “We are proud of the market leading position that Zellis Group has built over recent years, a testament to the work and innovation of our team, with the strong support of Bain Capital. Today’s announcement reaffirms that position and will allow us to increase our investments and expansion in the areas that are most important to our customers. We’re excited to partner with Apax as we begin a new chapter to fulfil our mission to help our customers offer exceptional employee experiences to their people," John Petter, Zellis Group CEO.