Gainline Capital Partners

Rick Sullivan and Allan Weinstein jointly lead investment decisions as Managing Partners. Sullivan brings operational CEO experience from manufacturing, while Weinstein contributes structuring and deal-execution expertise from investment banking. The two partners share investment committee authority and personally oversee each portfolio company's operational improvement plan.

Gainline targets control buyouts where it can install operational leadership and implement restructuring plans directly. The firm does not make passive minority investments. Its model depends on securing board and management control to execute the operational transformations that define the strategy.

Gainline sources a substantial portion of its deal flow through proprietary and intermediary-driven channels focused on complex situations — corporate carve-outs, founder transitions without succession, and underperforming divisions. While the firm does participate in limited auctions, its operational turnaround thesis positions it to compete where financial buyers without operating expertise are less effective.

Gainline invests exclusively in North America, with a focus on the United States. The firm's operating-partner model requires physical proximity to portfolio companies, making international expansion unlikely without a dedicated regional presence. Current portfolio companies are located across the Midwest, Northeast, and Southeast.

Gainline typically embeds an operating partner from its executive network into each portfolio company, often installing an interim CEO or COO for the first 6–18 months. The managing partners personally oversee the recruitment of permanent management teams where existing leadership is replaced. This operating-partner network is the firm's primary value-creation engine.