The undersigned, Deerfield Mgmt, L.P., Deerfield Management Company, L.P., Deerfield Special Situations Fund, L.P., Deerfield Private Design Fund, L.P., Deerfield Private Design International, L.P., Deerfield Private Design Fund II, L.P. and Deerfield Private Design International II, L.P. are jointly filing the attached Statement of Changes in Beneficial Ownership on Form 4 with James E. Flynn with respect to the beneficial ownership of securities of Nivalis Therapeutics, Inc.
DEERFIELD MGMT, L.P.
By: J.E. Flynn Capital, LLC, General Partner
By: /s/ Jonathan Isler
Jonathan Isler, Attorney-In-Fact
DEERFIELD MANAGEMENT COMPANY, L.P.
By: Flynn Management LLC, General Partner
By: /s/ Jonathan Isler Jonathan Isler, Attorney-In-Fact
DEERFIELD SPECIAL SITUATIONS FUND, L.P.
By: Deerfield Mgmt, L.P., General Partner
By: J.E. Flynn Capital, LLC, General Partner
By: /s/ Jonathan Isler Jonathan Isler, Attorney-In-Fact
DEERFIELD PRIVATE DESIGN FUND, L.P.
By: Deerfield Mgmt, L.P., General Partner
By: J.E. Flynn Capital LLC, General Partner
By: /s/ Jonathan Isler Jonathan Isler, Attorney-In-Fact
DEERFIELD PRIVATE DESIGN FUND II, L.P.
By: Deerfield Mgmt, L.P., General Partner
By: J.E. Flynn Capital, LLC, General Partner
By: /s/ Jonathan Isler Jonathan Isler, Attorney-In-Fact
DEERFIELD PRIVATE DESIGN INTERNATIONAL, L.P.
By: Deerfield Mgmt, L.P., General Partner
By: J.E. Flynn Capital, LLC, General Partner
By: /s/ Jonathan Isler Jonathan Isler, Attorney-In-Fact
DEERFIELD PRIVATE DESIGN INTERNATIONAL II, L.P.
By: Deerfield Mgmt, L.P., General Partner
By: J.E. Flynn Capital, LLC, General Partner
By: /s/ Jonathan Isler Jonathan Isler, Attorney-In-Fact
