|Jan 17, 2017||81.27||81.47||79.23||79.57||338,141|
|Jan 18, 2017||79.77||80.94||78.99||80.83||350,838|
|Jan 19, 2017||81.71||82.51||80.71||80.85||348,136|
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.