Association for Corporate Growth (ACG) | 28,094 followers on LinkedIn. Founded in 1954, ACG is the premier M&A deal-making community with a mission of driving middle-market growth. | Founded in 1954, the Association for Corporate Growth (ACG) has 60 chapters worldwide, representing 15,000 members. ACG serves 90,000 investors, owners, executives, lenders and advisers to growing middle-market companies. ACG’s mission is to drive middle-market growth.