Investor FAQ

Investor FAQ | Information Request
 The Company’s headquarters are located at 780 Memorial Drive, Cambridge, MA 02139. The main office number is 857-259-3840.

 Jounce is traded on the NASDAQ Global Market under the ticker symbol JNCE, and its CUSIP number is 481116 101.

 J.P. Morgan, Cowen and Company, Wells Fargo and Robert W. Baird & Co.

 Jounce’s shares first started trading on NASDAQ on January 27, 2017.

 The Company’s fiscal year ends on December 31st.

 Shares can be purchased through a stockbroker of your choice. Jounce does not have a direct stock purchase plan.

 Communication regarding transfer requirements, lost certificates, and change of address should be directed to:

Computershare
P.O. Box 30170
College Station, TX 77842-3170

877-373-6374

Investor Centre website
www.computershare.com/investor

 Independent Auditors:
Ernst & Young LLP
200 Clarendon Street
Boston, MA 02116
617-266-2000

 Jounce press release archives can be viewed in the Press Releases section.

 Quarterly and annual reports, as well as other SEC filings, can be accessed in the Financial Information section of our Investor Relations & Media webpage or directly from the SEC at www.sec.gov.

 You can submit questions to the Jounce investor relations team by contacting Investors@jouncetx.com.