MoonLake Immunotherapeutics Announces Pricing of Upsized $200 Million Public Offering

ZUG, Switzerland, June 23, 2026 – MoonLake Immunotherapeutics (NASDAQ: MLTX) (“MoonLake”), a clinical-stage biotechnology company focused on creating next-level therapies for inflammatory skin and joint diseases, today announced the pricing of an underwritten public offering of 9,000,000 Class A ordinary shares at a public offering price per share of $20.00 and, in lieu of Class A ordinary shares to certain investors that so choose, pre-funded warrants to purchase up to 1,000,000 Class A ordinary shares at a public offering price per pre-funded warrant of $19.9999, which equals the public offering price per Class A ordinary share less the $0.0001 per share exercise price of each pre-funded warrant. The pre-funded warrants are exercisable immediately. The gross proceeds from the offering to MoonLake, before deducting the underwriting discounts and commissions and other offering expenses payable by MoonLake, are expected to be approximately $200 million. In addition, MoonLake has granted the underwriters of the offering an option for a period of 30 days to purchase up to an additional 1,500,000 Class A ordinary shares at the public offering price, less the underwriting discounts and commissions. The offering is expected to close on or about June 25, 2026 subject to the satisfaction of customary closing conditions. All of the securities to be sold in the offering are being offered by MoonLake.