Joint Filing Agreement
Exhibit A
The undersigned agree that this Schedule 13G, and all amendments thereto, relating to the Common Stock of Certara, Inc. shall be filed on behalf of the undersigned.
DEERFIELD MGMT, L.P.
By: Deerfield UGP, LLC, General Partner
By: /s/ ▇▇▇▇▇▇▇▇ ▇▇▇▇▇
▇▇▇▇▇▇▇▇ ▇▇▇▇▇, Attorney-In-Fact
DEERFIELD MANAGEMENT COMPANY, L.P.
By: Deerfield UGP, LLC, General Partner
By: /s/ ▇▇▇▇▇▇▇▇ ▇▇▇▇▇
▇▇▇▇▇▇▇▇ ▇▇▇▇▇, Attorney-In-Fact
DEERFIELD PARTNERS, L.P.
By: Deerfield Mgmt, L.P., General Partner
By: Deerfield UGP, LLC, General Partner
By: /s/ ▇▇▇▇▇▇▇▇ ▇▇▇▇▇
▇▇▇▇▇▇▇▇ ▇▇▇▇▇, Attorney-In-Fact
▇▇▇▇▇ ▇. ▇▇▇▇▇
/s/ ▇▇▇▇▇▇▇▇ ▇▇▇▇▇
▇▇▇▇▇▇▇▇ ▇▇▇▇▇, Attorney-In-Fact