On July 26, 2012, TESARO, Inc. issued a press release announcing second quarter 2012 operating results. A copy of the press release is attached to this current report as Exhibit 99.1 and is incorporated herein by reference.

The information contained in this current report, including Exhibit 99.1, is being furnished to the Securities and Exchange Commission and shall not be deemed to be "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or otherwise subject to liabilities under that section. Furthermore, such information shall not be deemed to be incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such filing.

(d) Exhibits.

Exhibit No.                                Description

99.1           TESARO, Inc. press release dated July 26, 2012 announcing second
               quarter 2012 operating results