DRTX (MM)

Exhibit 99 Form 4 Joint Filer Information Names of Joint Filers: Canaan VIII L.P. Canaan Partners VIII LLC Canaan Management, Inc. Address of Joint Filers: c/o Canaan Partners 285 Riverside Avenue, Suite 250 Westport, CT 06880 Designated Filer: Canaan VIII L.P. Issuer and Ticker Symbol: Durata Therapeutics, Inc. [DRTX] Date of Event: November 17, 2014 Signatures of Joint Filers: Canaan VIII L.P. By: Canaan Partners VIII LLC Its Sole General Partner By: /s/ Jaime E. Slocum, Attorney-in-Fact -------------------------------------- Manager Canaan Partners VIII LLC By: /s/ Jaime E. Slocum, Attorney-in-Fact -------------------------------------- Manager Canaan Management, Inc. By: /s/ Brenton K. Ahrens, Vice President ----------------------------------------- Chief Financial Officer and Treasurer