PROOFPOINT INC

CUSIP: 743424103 Class: COM

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC's Holding History (CIK: 0001644956)

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

Q1 2021
Shares 934,928 Value ($000) $117,605 Avg Close — Range —
Q4 2020
Shares 937,307 Value ($000) $127,858 Avg Close — Range —
Q3 2020
Shares 948,472 Value ($000) $100,111 Avg Close — Range —
Q2 2020
Shares 963,968 Value ($000) $107,116 Avg Close — Range —
Q1 2020
Shares 954,431 Value ($000) $97,915 Avg Close — Range —
Q4 2019
Shares 968,249 Value ($000) $111,136 Avg Close — Range —
Q3 2019
Shares 837,311 Value ($000) $108,055 Avg Close — Range —