TRex Bio prices $117 million IPO to fund immune‑regulatory drug program

TRex Bio sold 8,333,334 shares at $14 each, raising $117 million in its initial public offering and will begin trading on Nasdaq under the symbol TRXB. The capital will support its Phase 1 trial of the Treg‑activating fusion protein TRB‑061 and future testing of TRB‑071 for inflammatory bowel disease. Eli Lilly, which owned about 24% of the company before the IPO, indicated interest in buying additional shares.

The $117 million proceeds give TRex Bio funding to advance its immunoregulatory pipeline, potentially increasing its valuation as clinical data emerge. The IPO also adds a new biotech stock for investors, with the opening price anchored at $14 per share.

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