X0306 4 2022-02-08 0 0001810560 REVELATION BIOSCIENCES, INC. REVB 0001287235 TIDMARSH GEORGE F C/O REVELATION BIOSCIENCES, INC. 4660 LA JOLLA VILLAGE DR., SUITE 100 SAN DIEGO CA 92122 1 0 1 0 Common Stock 2022-02-08 4 P 0 1000 2.54 A 417156 D Common Stock 2022-02-09 4 P 0 30000 2.5533 A 447156 D Common Stock 1523335 I By Trust Represents the weighted-average price at which shares were purchased within a range between $2.53 and $2.57. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range. Shares are held by George Tidmarsh, Trustee George Francis Tidmarsh 2021 Irrevocable Trust with respect to which George Tidmarsh is a trustee. /s/ J.P. Galda, as attorney-in-fact for George F Tidmarsh 2022-02-10