Parabilis Medicines Announces Closing of Upsized Initial Public Offering, Including Full Exercise of Underwriters’ Option to Purchase Additional Shares

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Summary

Parabilis Medicines closed an upsized IPO and sold additional shares through the underwriters’ full overallotment exercise. The company also completed a concurrent private placement to Regeneron Pharmaceuticals. Total 2026 funding surpassed $1.2 billion before fees and expenses, according to the release. Parabilis says the capital will support development of its Helicons platform and transformative medicines for hard-to-target proteins.

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Amount $770.5M Total raised
Date June 11, 2026 Announcement date
Investors Leerink Swann & Company, Evercore Partners, Regeneron Pharmaceuticals, Guggenheim Partners Lead investors
Company parabilismed.com Funded company

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