TRex Bio files for $100M IPO on NASDAQ under symbol TRXB
Summary
TRex Bio, a biotech company focused on developing therapies for autoimmune and inflammatory diseases, has filed with the SEC to raise up to $100 million in an initial public offering. Founded in 2018 and based in South San Francisco, TRex Bio specializes in augmenting regulatory T cells to restore immune balance rather than broadly suppress it. The company has a robust pipeline, with its lead candidate TRB-061 in Phase 1b for moderate-to-severe atopic dermatitis, expecting topline data in mid-2027, and a second candidate, TRB-071, targeting inflammatory bowel disease, set to enter Phase 1 in early 2027. The company quietly filed for the IPO on June 26, 2026, and plans to list on the Nasdaq under the symbol TRXB, with J.P. Morgan and Evercore ISI acting as joint bookrunners.