UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a‑16 OR 15d‑16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

FOR THE MONTH OF MAY 2026

COMMISSION FILE NUMBER 001-39081

BioNTech SE
(Translation of registrant’s name into English)

An der Goldgrube 12

D-55131 Mainz

Germany

+49 6131-9084-0
(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20‑F or Form 40‑F: Form 20‑F ☒ Form 40‑F ☐

Indicate by check mark if the registrant is submitting the Form 6‑K in paper as permitted by Regulation S‑T Rule 101(b)(1): ☐

Indicate by check mark if the registrant is submitting the Form 6‑K in paper as permitted by Regulation S‑T Rule 101(b)(7): ☐

DOCUMENTS INCLUDED AS PART OF THIS FORM 6-K

On May 5, 2026, BioNTech SE (the “Company”) provided a development update and reported its financial results for the three months ended March 31, 2026. The interim condensed consolidated financial statements as well as the operating and financial review and prospects of the Company for the three months ended March 31, 2026 are attached hereto as Exhibit 99.1 and shall be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”) and incorporated by reference herein.

SIGNATURE

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

BioNTech SE

By:

/s/ Ramón Zapata-Gomez

By:

/s/ Dr. Sierk Poetting

Name: Ramón Zapata-Gomez

Name: Dr. Sierk Poetting

Title: Chief Financial Officer

Title: Chief Operating Officer

Date: May 5, 2026

EXHIBIT INDEX



Exhibit			Description of Exhibit

99.1			Quarterly Report for the Three Months Ended March 31, 2026

BioNTech SE 6-K