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 Exhibits 99.1, 99.2 and 99.3 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Form S-8 (File No. 333-266881) and to be a part thereof from the date on which this Report is filed, to the extent not superseded by documents or reports subsequently filed or furnished.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, 99.2 and 99.3 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 it be deemed incorporated by reference in any filing under the Securities Act of 1933 or the Exchange Act.

Press Release

On March 18, 2026, Alvotech issued a Press Release announcing the Financial Results and Business Update for Q4 2025 and the full year. A copy of the Press Release is furnished herewith as Exhibit 99.1.

Earnings Report and Presentation

On March 18, 2026, Alvotech made public a more detailed earnings report with Financial Results and Business Update for Q4 2025 and the full year. A copy is furnished herewith as Exhibit 99.2. The Company also made public its Earnings Call Presentation. A copy is furnished herewith as Exhibit 99.3.

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.