PROOFPOINT INC

CUSIP: 743424103 Class: COM

Sterling Investment Advisors, Ltd.'s Holding History (CIK: 0001701132)

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

Q2 2021
Shares 300 Value ($000) $52 Avg Close — Range —
Q1 2021
Shares 300 Value ($000) $38 Avg Close — Range —
Q4 2020
Shares 300 Value ($000) $41 Avg Close — Range —
Q3 2020
Shares 300 Value ($000) $32 Avg Close — Range —
Q2 2020
Shares 300 Value ($000) $33 Avg Close — Range —
Q1 2020
Shares 300 Value ($000) $30 Avg Close — Range —
Q4 2019
Shares 300 Value ($000) $34 Avg Close — Range —
Q3 2019
Shares 300 Value ($000) $39 Avg Close — Range —
Q2 2019
Shares 300 Value ($000) $36 Avg Close — Range —
Q1 2019
Shares 500 Value ($000) $61 Avg Close — Range —
Q4 2018
Shares 500 Value ($000) $41 Avg Close — Range —
Q3 2018
Shares 500 Value ($000) $53 Avg Close — Range —