PROOFPOINT INC

CUSIP: 743424103 Class: COM

ZEVENBERGEN CAPITAL INVESTMENTS LLC's Holding History (CIK: 0001276918)

Note: Option positions (PUT/CALL) are excluded.

Q3 2018
Shares 456,869 Value ($000) $48,579 Avg Close — Range —
Q2 2018
Shares 566,864 Value ($000) $65,365 Avg Close — Range —
Q1 2018
Shares 577,759 Value ($000) $65,663 Avg Close — Range —
Q4 2017
Shares 580,560 Value ($000) $51,560 Avg Close — Range —
Q3 2017
Shares 597,545 Value ($000) $52,118 Avg Close — Range —
Q2 2017
Shares 537,760 Value ($000) $46,694 Avg Close — Range —
Q1 2017
Shares 338,130 Value ($000) $25,143 Avg Close — Range —
Q4 2016
Shares 155,075 Value ($000) $10,956 Avg Close — Range —