|Mar 20, 2017||80.71||81.00||80.05||80.85||338,425|
|Mar 21, 2017||81.34||81.38||78.06||78.27||478,342|
|Mar 22, 2017||78.05||79.20||77.60||79.20||399,143|
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.