Alvotech美股招股说明书(2026-06-16版)

22,666,667 Ordinary Shares We are offering22,666,667 ordinary shares, with a nominal value of $0.01 per share, pursuant to this prospectus supplement andaccompanying prospectus. Our ordinary shares are listed on The Nasdaq Global Market (“Nasdaq”) and the Nasdaq Main Market in Iceland (the “NasdaqIceland Main Market”) under the symbol “ALVO.” Our warrants are listed on Nasdaq under the symbol “ALVOW.” Our SwedishDepositary Receipts (“SDRs”), each representing one ordinary share, are listed on Nasdaq Stockholm under the symbol “ALVOSDB.” On June 15, 2026, the closing price of our ordinary shares on Nasdaq was $4.24. On June 16, 2026, we entered into agreements with certain investors in the European Economic Area pursuant to which theinvestors have agreed to subscribe to an aggregate of 17,826,666 of our ordinary shares in a private placement, at the public offeringprice, for gross proceeds to us of approximately $66.85 million. We refer to this transaction as the “concurrent private placement.” Theshares will be offered solely to professional clients or eligible counterparties falling within article 1(4) of Regulation (EU) 2017/1129.Consummation of the concurrent private placement is conditioned on the closing of this offering and the satisfaction of certain othercustomary conditions, and is expected to occur within seven business days following the closing of this offering. The consummation ofthis offering is not contingent on the consummation of the concurrent private placement. We are a “foreign private issuer” under applicable Securities and Exchange Commission (“SEC”) rules and are eligible forreduced public company disclosure requirements. See “Prospectus Supplement Summary—Implications of Being a ‘Foreign PrivateIssuer.’” Investing in our securities involves a high degree of risk. You should review carefully the risks and uncertainties describedunder the heading “Risk Factors” on page S-7 of this prospectus supplement and in the documents that are incorporated byreference into this prospectus supplement. We have granted the underwriters an option to purchase up to 3,400,000 ordinary shares from us at the public offering price, lessunderwriting discounts and commissions, within 30 days from the date of the final prospectus supplement. The underwriters expect to deliver the shares to purchasers on or about June 17, 2026. Neither the Securities and Exchange Commission nor any state or other securities commission has approved ordisapproved of these securities or passed upon the accuracy or adequacy of this prospectus supplement or the accompanyingprospectus. Any representation to the contrary is a criminal offense. Joint Book-Running Managers Evercore ISI Jefferies The date of this prospectus supplement isJune 15, 2026. TABLE OF CONTENTS Prospectus Supplement ABOUT THIS PROSPECTUS SUPPLEMENTPROSPECTUS SUPPLEMENT SUMMARYRISK FACTORSSPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTSUSE OF PROCEEDSDIVIDEND POLICYCAPITALIZATIONDILUTIONMATERIAL LUXEMBOURG INCOME TAX CONSIDERATIONSMATERIAL U.S. FEDERAL INCOME TAX CONSIDERATIONSUNDERWRITINGCONCURRENT PRIVATE PLACEMENTMATERIAL CHANGESSERVICE OF PROCESS AND ENFORCEMENT OF CIVIL LIABILITIES UNDER U.S. SECURITIES LAWSLEGAL MATTERSEXPERTSWHERE YOU CAN FIND MORE INFORMATIONINCORPORATION OF CERTAIN INFORMATION BY REFERENCE ProspectusABOUT THIS PROSPECTUSPROSPECTUS SUMMARYRISK FACTORSCAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTSOFFER AND LISTING DETAILSUSE OF PROCEEDSDESCRIPTION OF SHARE CAPITAL AND ARTICLES OF ASSOCIATIONDESCRIPTION OFDEBT SECURITIESDESCRIPTION OF WARRANTSDESCRIPTION OF RIGHTSDESCRIPTION OF UNITSTAXATION PLAN OF DISTRIBUTION38EXPENSES40SERVICE OF PROCESS AND ENFORCEMENT OF CIVIL LIABILITIESUNDER U.S. SECURITIES LAWS41LEGAL MATTERS43EXPERTS43WHERE YOU CAN FIND MORE INFORMATION44INFORMATION INCORPORATED BY REFERENCE44 ABOUT THIS PROSPECTUS SUPPLEMENT This document is part of the registration statement that we filed with the SEC using a “shelf” registration process and consists oftwo parts. The first part is this prospectus supplement, including the documents incorporated by reference, which describes the specificterms of this offering and also adds to and updates information contained in the accompanying prospectus. The second part, theaccompanying prospectus, including the documents incorporated by reference, gives more general information, some of which maynot be applicable to this offering. Generally, when we refer to the “prospectus” we are referring to both parts combined. If information in this prospectus supplement is inconsistent with the accompanying prospectus or with any document incorporatedby reference that was filed with the SEC before the date of this prospectus supplement, you should rely on this prospectus supplement.This prospectus supplement, the accompanying prospectus and the documents incorporated by reference into each include importantinformation about us, the securities being offered and other informatio