Alvotech Announces Proposed $125 Million Public Offering and Concurrent Private Placement of Ordinary Shares

REYKJAVIK, ICELAND (June 15, 2026) — Alvotech (NASDAQ: ALVO; ALVO-SDB) (“Alvotech” or the “Company”), a global biotechnology company specializing in the development and manufacture of biosimilar medicines for patients worldwide, today announced that it has commenced an underwritten public offering of its ordinary shares (the “Offering”). In addition, Alvotech expects to grant the underwriters a 30-day option to purchase up to an additional 15% of the ordinary shares sold in the public offering at the public offering price, less underwriting discounts and commissions. The 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 shares in the Offering are to be issued and sold by Alvotech.