                                                       [**]                             [**] [**]   [**] [**] [**] [**]   Certain identified information has been marked in the exhibit because it is both (i) not material and (ii) would likely cause competitive harm to the Company, if publicly disclosed. Double asterisks denote omissions.

                     [**]  [**]       [**] [**]    [**]        [**]    [**]    

75A50119C00071/P00009 Page 3 of 3 The purpose of this modification to the contract, P00009, is to deobligate the unliquidated funding for Task 4, Relabeling of ACAM2000 from fiscal years 2020 and 2021 appropriations. As a result of this deobligation action, the following changes are made: a. The total value of Line Item 3, Task 4: Relabeling of ACAM2000, added per P00001, is hereby [**] from a total funded value [**] to a balance of [**]. b. The total value of Line Item 4, Task 4: ACAM Relabeling, exercised per P00003, is hereby [**] from a total funded value of [**] to a balance of [**]. c. The Total Obligated Value under the contract is hereby [**], from [**] to a Funded Balance of [**] All other terms and conditions of the contract remain unchanged as a result of this modification, P00009.