The round was led by M13, with participation from Rise of the Rest, Rogue Venture Partners, Founders' Co-op and Oregon Venture Fund. Source had previously raised a total of $3.7 million.

Source is a B2B marketplace for commercial construction products. Project stakeholders can enjoy cloud-based collaboration and integrated purchasing on a single platform. Designers use Source to budget, discover, sample, and select products for commercial real estate projects. Product selections flow into an integrated purchasing pathway that supports the timely purchasing of goods and helps to protect the client's timeline and assets.