Source, a leading B2B marketplace for commercial construction products, today announced it closed on $8.5M Series A funding round. 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. PORTLAND, Ore., Aug. 1, 2023 Source, a leading B2B marketplace for commercial construction products, today announced it closed on $8.5M Series A funding round. The round was led by M13, with participation from Rise of the Rest, Rogue Venture Partners, Founders' Co-op and Oregon Venture Fund.