NB Group Investors | 467 followers on LinkedIn. Private equity firm focused on accelerating growth of founder and family-owned businesses. | We are an investment firm focused on helping to grow exceptional founder and family owned businesses in the Multi Location Services and Healthcare sectors. We invest $10 to 50 million in companies with $3 to 15 million of EBITDA. Our preference is for control (51%+ ownership) or significant minority ownership, but we are highly flexible.