Mainspring Capital Partners

Mainspring Capital Partners is a Venture Capital firm based in Boston that provides Private Capital to growing businesses. Mainspring Capital is built upon decades of entrepreneurial and investing experience. We know what it takes to build a successful company because we have been there. And we also understand that you're the expert in your business. ​What we do is fairly simple - whether you are an early-stage venture looking for growth capital or a founder looking to exit, we can provide smart, flexible capital and hands-on experience to help you achieve your goals.