Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.
Form 20-F [ X ]      Form 40-F [   ]

Incorporation by Reference

This Report on Form 6-K (this “Report”) of Alvotech (the “Company”) excluding Exhibit 99.1 attached hereto, shall be deemed to be incorporated by reference into the Company’s registration statements on Forms F-3 (File Nos. 333-266136, 333-273262, 333-275111 and 333-281684), the Company’s registration statement on Form F-3ASR (File No. 333-289006), and the Company’s registration statement on Form S-8 (File No. 333-266881) and to be a part thereof from the date on which this Report is filed, to the extent not superseded by documents or reports subsequently filed or furnished.

Exhibits 99.1 and 99.2 to this Report are being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934 (the “Exchange Act”) or otherwise subject to the liabilities of that section, nor shall they be deemed incorporated by reference in any filing under the Securities Act of 1933 or the Exchange Act.

Company Announcement

On February 27, 2026, Alvotech announced that according to forms filed the Luxembourg Commission de Surveillance du Secteur Financier (CSSF) regarding transactions of managers and closely associated persons, ATP Holdings ehf. had announced the sale of 2,701,617 shares in Alvotech on January 30, 2026, and Aztiq Pharma Partners S.à r.l. ("Aztiq") announced the acquisition of 2,701,617 shares in Alvotech on January 30, 2026. The two announcements were related to the same transaction, and the transaction price was USD 4.74 per share. ATP Holdings ehf. belongs to the Aztiq group and the transaction was thus a transfer of shares within the group. Copies of the forms are furnished herewith as exhibits 99.1 and 99.2.

EXHIBIT INDEX

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.