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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
1370087	O James Armitage	C/O Tesaro, Inc. 1000 Winter Street Waltham MA 02451		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
Common Stock	Acquisiton	2017-09-18	10,000	$26.36	10,000	No	4	M	Direct
Common Stock	Disposition	2017-09-18	4,257	$116.52	5,743	No	4	S	Direct
Common Stock	Disposition	2017-09-18	5,743	$117.58	0	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	M	Direct
No	4	S	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Director Nonqualified Stock Option (right to buy)	Disposition	2017-09-18	10,000	$0.00	10,000	$26.36

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
0		2024-06-01	No	4	M	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	1,500	Indirect	By The Nancy E. Armitage Revocable Living Trust

Footnotes

The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.
The price reported is a weighted average. The shares were sold in multiple transactions at prices ranging from $116.03 to $117.00, inclusive. The reporting person undertakes to provide to TESARO, Inc., any security holder of TESARO, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth herein.
The price reported is a weighted average. The shares were sold in multiple transactions at prices ranging from $117.05 to $118.01, inclusive. The reporting person undertakes to provide to TESARO, Inc., any security holder of TESARO, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth herein.
The reporting person is trustee of the trust. The reporting person disclaims beneficial ownership of these securities, and the filing of this report is not an admission that the reporting person is the beneficial owner of these securities for purposes of Section 16 or for any other purposes, except to the extent of his pecuniary interest therein.
The original grant of options to purchase 10,000 shares of common stock vested on May 14, 2015.