Series B funds will enable clinical development of ATV-1601, an oral allosteric AKT1-selective inhibitor for the treatment of Hereditary Hemorrhagic Telangiectasia (HHT), and the advancement of its JAK2 V617F mutant-selective inhibitor program for myeloproliferative neoplasms (MPNs) through clinical proof of concept

RA Capital Management joins Atavistik Bio's syndicate, which also includes Nextech Invest, The Column Group, Lux Capital and Regeneron Ventures

CAMBRIDGE, Mass., March 05, 2026 (GLOBE NEWSWIRE) -- Atavistik Bio, a biotechnology company discovering the next generation of selective allosteric therapeutics, today announced the closing of a $40 million extension to its Series B financing from new investor RA Capital Management, bringing the total round proceeds to $160 million. RA Capital joins other top-tier investors who participated in the Series B round, including Nextech Invest, The Column Group, Lux Capital and Regeneron Ventures, as previously announced in December 2025. Atavistik Bio will use the proceeds from the upsized Series B financing to fund clinical development of ATV-1601, a potential best-in-class AKT1-selective oral inhibitor for HHT, and its JAK2 V617F mutant-selective inhibitor program for MPNs through clinical proof of concept.

"We're excited to welcome RA Capital as an investor in Atavistik Bio. Our Series B round, backed by a highly respected syndicate, reflects strong belief in our selective allosteric programs and our focus to advance meaningful therapies for patients with severe diseases," said Bryan Stuart, Chief Executive ...