Joint Filer Information
| Names: | Deerfield Mgmt, L.P., Deerfield Management Company, L.P., Deerfield International Master Fund, L.P., Deerfield Partners, L.P. |
| Address: | 780 Third Avenue, 37th Floor New York, NY 10017 |
| Designated Filer: | James E. Flynn |
| Issuer and Ticker Symbol: | Proteon Therapeutics, Inc. [PRTO] |
| Date of Event Requiring Statement: | November 30, 2017 |
The undersigned,Deerfield Mgmt, L.P., Deerfield Management Company, L.P., Deerfield International Master Fund, L.P. and Deerfield Partners, 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 Proteon Therapeutics, Inc.
Signatures:
DEERFIELD MGMT, L.P.
By: J.E. Flynn Capital, LLC, General Partner
By:/s/ Jonathan Isler Jonathan Isler, Attorney-In-Fact
| DEERFIELD INTERNATIONAL MASTER 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 MANAGEMENT COMPANY, L.P.
By: Flynn Management LLC, General Partner
By:/s/ Jonathan Isler Jonathan Isler, Attorney-In-Fact
| DEERFIELD PARTNERS, 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 |