Mainsail Partners

Mainsail Partners is a San Francisco-based growth equity venture capital firm focused on bootstrapped or capital-efficient enterprise SaaS businesses, investing exclusively in software companies that have achieved sustainable revenue growth without having raised significant venture capital previously. The firm invests at Series B and growth stages with initial checks from $5 million to $25 million and takes an active board role, providing operational expertise in sales and marketing scaling, product development, and M&A. Portfolio companies include Arrowhead, an enterprise software company; BigTime Software, the professional services automation platform; EAB Global, the education research and technology firm; and Roper Technologies, an industrial and healthcare technology company. Beyond its original investments, the portfolio includes additional bootstrapped and capital-efficient enterprise software companies.