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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1491576	Tesaro Inc.	TSRO	()	4

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1219855	James M Barrett	1954 Greenspring Drive Suite 600 Timonium MD 21093		No	No	Yes	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	Acquisiton	2016-03-18	710,429	$35.19	9,564,684	No	4	P	Indirect	See Note 2

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	P	Indirect	See Note 2

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	252	Direct
Common Stock	252	Indirect	See Note 3

Footnotes

The shares were acquired upon the closing of a private placement that was publicly disclosed by the Issuer on February 25, 2016.
The Reporting Person is a director of NEA 13 GP, LTD, which is the sole general partner of NEA Partners 13, L.P. ("NEA Partners 13"). NEA Partners 13 is the sole general partner of New Enterprise Associates 13, L.P. ("NEA 13"), the direct beneficial owner of the shares. The Reporting Person disclaims beneficial ownership within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended, or otherwise of such portion of the shares of the Issuer held by NEA 13 in which the Reporting Person has no pecuniary interest.
The shares are directly held by the Barrett 2006 Family Trust. The Reporting Person disclaims beneficial ownership within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended, or otherwise of such portion of the shares of the Issuer held by the Barrett 2006 Family Trust in which the Reporting Person has no pecuniary interest.