Pyran, Inc., a high-growth company that creates high-performing 5-carbon products made from renewable resources, today announced that it has closed its latest round of fundraising, bringing its total of investments and grants to nearly $4 million. The investment comes from lead investor, Arosa Capital, with support from the venture arm of the Wisconsin Alumni Research Foundation (WARF). Several new investors joined all previous investors in the oversubscribed fundraise, further demonstrating investor enthusiasm in the specialty chemicals company.