|Feb 13, 2017||82.58||83.64||81.60||82.01||561,256|
|Feb 14, 2017||81.47||82.93||80.85||82.47||404,011|
|Feb 15, 2017||81.70||84.13||81.24||83.39||622,240|
|Feb 16, 2017||83.59||84.23||80.67||81.53||790,365|
|Feb 17, 2017||81.53||82.45||80.61||81.84||686,622|
Year End Stock Prices
The historical stock information provided is for informational purposes only and is not intended for trading purposes. The historical stock information is provided by Mergent, a third party service, and Proofpoint, Inc. does not maintain or provide information directly to this service. Prices display split-adjusted cost basis per share on that date.