Tesaro to Announce Fourth Quarter 2015 Financial Results on February 25, 2016

WALTHAM, Mass., Feb. 11, 2016 -- TESARO, Inc. (NASDAQ:TSRO) will announce its fourth quarter 2015 financial results on Thursday, February 25, 2016, after the close of the U.S. financial markets. TESARO’s senior management will host a conference call and live audio webcast at 4:15 p.m. ET on February 25, 2016 to discuss the Company’s operating results in greater detail, as well as the status of its development programs and the VARUBI® launch.

The quarterly earnings call will be available via phone and webcast. The conference call dial-in information is listed below. To access the webcast, please log on to the TESARO website at www.tesarobio.com at least 15 minutes prior to the start of the call to ensure adequate time for any software downloads that may be required.

******************CONFERENCE CALL & WEBCAST INFORMATION******************

TESARO will host a conference call and live audio webcast to discuss its fourth quarter financial results.

WHEN: Thursday, February 25, 2016 at 4:15 p.m. ET
LIVE DOMESTIC & CANADA CALL-IN: (877) 853-5334
LIVE INTERNATIONAL CALL-IN: (970) 315-0307
THIS CALL WILL ALSO BE BROADCAST LIVE, LISTEN ONLY, VIA THE WEB AT: www.tesarobio.com

A replay will be available for 30 days at www.tesarobio.com.

**********************************************************************************

About TESARO

TESARO is an oncology-focused biopharmaceutical company devoted to providing transformative therapies to people bravely facing cancer. For more information, visit www.tesarobio.com.

Investor/Media Contact:

Jennifer Davis
Sr. Director, Corporate Development & Investor Relations
+1.781.325.1116 or [email protected]