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Spyre raises USD 350m to advance immunology pipeline following Phase II readouts

Spyre raises USD 350m to advance immunology pipeline following Phase II readouts

Waltham, Massachusetts-based Spyre Therapeutics (Nasdaq: SYRE) priced a USD 350 million underwritten public offering of common stock on October 5, 2026, with proceeds directed toward Phase III readiness and late-stage development of SPY072 in hidradenitis suppurativa (HS).

The offering consists of 4,117,648 shares of common stock at USD 85.00 per share, with the underwriters holding a 30-day option to purchase up to an additional approximately USD 52.5 million of shares and closing expected on or about October 7, 2026.

Spyre said net proceeds will fund preclinical studies, clinical trials, manufacturing, and Phase III readiness across its gastroenterology, rheumatology, and dermatology programs, as well as advance SPY072 into late-stage development for HS.

Spyre's pipeline consists of investigational extended half-life antibodies targeting α4β7 (SPY001), TL1A (SPY002) and IL-23 (SPY003), and the three monotherapy candidates are also being evaluated as pairwise combinations (SPY120, SPY130 and SPY230) in the company's SKYLINE Phase II basket trial.

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The financing follows recent Phase II readouts across Spyre’s pipeline. In September, its anti-IL-23 antibody SPY003 achieved 20% clinical remission and 30% endoscopic improvement at week 12 in an open-label ulcerative colitis cohort, supporting progression to placebo-controlled testing of monotherapies and combinations. However, August rheumatoid arthritis results for SPY072 fell short of the company’s threshold to prioritise monotherapy development, despite the lower dose meeting the primary endpoint.

The October 2026 raise is Spyre's fourth significant equity financing in roughly three years, following a USD 200 million offering in November 2024, a USD 316.2 million offering closed in October 2025, and the April 2026 USD 403 million raise.


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