MoonLake Immunotherapeutics Announces Proposed Public Offering
ZUG, Switzerland, June 22, 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 a proposed public offering of $150 million of its Class A ordinary shares and, in lieu of Class A ordinary shares to certain investors that so choose, pre-funded warrants to purchase Class A ordinary shares. In addition, MoonLake is expected to grant the underwriters of the offering an option for a period of 30 days to purchase up to an additional $22.5 million of its Class A ordinary shares offered in the proposed offering at the public offering price, less the underwriting discounts and commissions. The proposed public offering is subject to market and other conditions, and there can be no assurance as to whether or when the offering may be completed or as to the actual size or terms of the offering. All of the securities to be sold in the offering are being offered by MoonLake.
MoonLake intends to use the net proceeds from this offering together with its existing cash, cash equivalents and marketable securities to fund the research, development, pre-commercialization activities and commercialization activities of sonelokimab, if approved, and for general corporate purposes.
Leerink Partners, Guggenheim Securities, Cantor and LifeSci Capital are acting as joint bookrunning managers for the offering.
A shelf registration statement relating to these securities has been filed with the Securities and Exchange Commission (“SEC”) and became effective on September 11, 2023. The offering is being made only by means of a prospectus, including a prospectus supplement, as may be further supplemented by any free writing prospectus and/or pricing supplement that MoonLake may file with the SEC, forming a part of an effective registration statement. A preliminary prospectus supplement and accompanying prospectus relating to the offering will be filed with the SEC and will be available on the SEC’s website, located at www.sec.gov. Prospective investors should read the preliminary prospectus supplement and the accompanying prospectus and other documents MoonLake has filed with the SEC for more complete information about MoonLake and the offering. Electronic copies of the preliminary prospectus supplement and the accompanying prospectus related to the offering may also be obtained by contacting Leerink Partners LLC, Attention: Syndicate Department, 53 State Street, 40th Floor, Boston, MA 02109, or by telephone at (800) 808-7525, ext. 6105, or by email at [email protected]; Guggenheim Securities, LLC, Attention: Equity Syndicate Department, 330 Madison Avenue, New York, New York 10017, by telephone at (212) 518-9544, or by email at [email protected]; Cantor Fitzgerald & Co., Attention: Capital Markets, 110 East 59th Street, 6th Floor, New York, NY 10022, or by email at [email protected]; or LifeSci Capital LLC at 1700 Broadway, 40th Floor, New York, New York 10019, or by email at [email protected].
This press release shall not constitute an offer to sell or the solicitation of an offer to buy these securities, nor shall there be any sale of these securities in any state or jurisdiction in which such offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction.
About MoonLake Immunotherapeutics
MoonLake Immunotherapeutics is a clinical-stage biopharmaceutical company unlocking the potential of sonelokimab, a novel investigational Nanobody® for the treatment of inflammatory disease, to revolutionize outcomes for patients. Sonelokimab inhibits IL-17A and IL-17F by inhibiting the IL-17A/A, IL-17A/F, and IL-17F/F dimers that drive inflammation. MoonLake’s focus is on inflammatory diseases with a major unmet need, including hidradenitis suppurativa, psoriatic arthritis, axial spondyloarthritis and palmoplantar pustulosis – conditions affecting millions of people worldwide with a large need for improved treatment options. MoonLake was founded in 2021 and is headquartered in Zug, Switzerland.
Contacts
MoonLake Immunotherapeutics Media & Investors Relations
ICR Healthcare
Mary-Jane Elliott, Namrata Taak, Ashley Tapp Tel: +44 (0) 20 3709 5700 [email protected]
Summary
ZUG, Switzerland, June 22, 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 a proposed public offering of 150millionofitsClassAordinarysharesand,inlieuofClassAordinarysharestocertaininvestorsthatsochoose,pre−fundedwarrantstopurchaseClassAordinaryshares.Inaddition,MoonLakeisexpectedtogranttheunderwritersoftheofferinganoptionforaperiodof30daystopurchaseuptoanadditional22.5 million of its Class A ordinary shares offered in the proposed offering at the public offering price, less the underwriting discounts and commissions. The proposed public offering is subject to market and other conditions, and there can be no assurance as to whether or when the offering may be completed or as to the actual size or terms of the offering. All of the securities to be sold in the offering are being offered by MoonLake.