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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1640455	Jounce Therapeutics Inc.	JNCE	()	4

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1591092	Cary Pfeffer	C/O Third Rock Ventures, Llc, 29 Newbury Street, 3Rd Floor Boston MA 02116		Yes	No	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Disposition	2020-11-19	0	$0.00	0	No	4	S	Indirect	See Footnote

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Indirect	See Footnote

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	9,917	Direct

Footnotes

On November 19, 2020, Third Rock Ventures II, L.P. ("TRV II") sold 15,000 shares of Common Stock of the Issuer at a price per share of $7.005.
After the above transaction, TRV II owned 9,200,349 shares of Common Stock of the Issuer.
The Reporting Person is a partner of Third Rock Ventures GP II, L.P., which is the general partner of TRV II. The Reporting Person disclaims beneficial ownership over the shares held by TRV II, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that he is the beneficial owner of such shares.
Third Rock Ventures III, L.P. ("TRV III") directly holds 3,048,780 shares of the Issuer's Common Stock. The Reporting Person is a partner of Third Rock Ventures GP III, L.P., which is the general partner of TRV III. The Reporting Person disclaims beneficial ownership over the shares held by TRV III, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that he is the beneficial owner of such shares.