a993votingresults

Voting results - Overview BioNTech SE, Mainz ordinary Annual General Meeting on 15/05/2026 Page 1Note: Percentages rounded to 2 decimal places Valid votes cast Yes votes No votes Item Shares % of capital stock Shares % Shares % Item 2 Resolution on the appropriation of the balance sheet profit for the 2025 financial year 234,799,767 90.65 % 234,734,083 99.97 % 65,684 0.03 % adopted Item 3 Resolution on the approval of the actions of the Management Board 198,284,335 76.55 % 197,873,174 99.79 % 411,161 0.21 % adopted Item 4 Resolution on the approval of the actions of the Supervisory Board 236,818,981 91.43 % 236,071,180 99.68 % 747,801 0.32 % adopted Item 5 Resolution on the appointment of the auditor and the Group auditor for the 2026 financial year and the auditor for any audit or review of interim reports 238,289,587 91.99 % 237,926,738 99.85 % 362,849 0.15 % adopted Item 6 Resolution on the approval of the Compensation Report 238,280,961 91.99 % 230,176,677 96.60 % 8,104,284 3.40 % adopted Item 7 Resolution on the amendment of Section 9 para. 1 of the Articles of Association to increase the size of the Supervisory Board 238,286,403 91.99 % 238,238,932 99.98 % 47,471 0.02 % adopted Item 8.1 Resolution on Elections to the Supervisory Board - Helmut Jeggle 238,286,432 91.99 % 236,945,474 99.44 % 1,340,958 0.56 % adopted Item 8.2 Resolution on Elections to the Supervisory Board - Prof. Dr. Anja Morawietz 238,288,562 91.99 % 238,000,533 99.88 % 288,029 0.12 % adopted Item 8.3 Resolution on Elections to the Supervisory Board - Prof. Dr. Rudolf Staudigl 238,289,153 91.99 % 235,551,089 98.85 % 2,738,064 1.15 % adopted Item 8.4 Resolution on Elections to the Supervisory Board - Dr. Susanne Schaffert 238,288,876 91.99 % 238,242,633 99.98 % 46,243 0.02 % adopted Item 8.5 Resolution on Elections to the Supervisory Board - Prof. Dr. Iris Loew-Friedrich 238,288,266 91.99 % 216,215,291 90.74 % 22,072,975 9.26 % adopted Exhibit 99.3

Voting results - Overview BioNTech SE, Mainz ordinary Annual General Meeting on 15/05/2026 Page 2Note: Percentages rounded to 2 decimal places Valid votes cast Yes votes No votes Item Shares % of capital stock Shares % Shares % Item 9 Resolution on the amendment of Section 16 para. 5 of the Articles of Association to reauthorize the Management Board to provide for the holding of a virtual Annual General Meeting 238,288,290 91.99 % 217,903,070 91.45 % 20,385,220 8.55 % adopted Item 10 Resolution on the cancellation of the existing Authorized Capital 2025 and the creation of new Authorized Capital 2026 with the possibility of excluding subscription rights and corresponding amendment to the Articles of Association 238,290,388 91.99 % 236,478,038 99.24 % 1,812,350 0.76 % adopted Item 11 Resolution on the approval of the conclusion of a domination and profit and loss transfer agreement between BioNTech SE and BioNTech Discovery GmbH 238,284,305 91.99 % 237,836,243 99.81 % 448,062 0.19 % adopted