PROOFPOINT INC

CUSIP: 743424103 Class: COM

Yorktown Management & Research Co Inc's Holding History (CIK: 0001313559)

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

Q3 2015
Shares 3,500 Value ($000) $211 Avg Close — Range —
Q2 2015
Shares 3,500 Value ($000) $223 Avg Close — Range —
Q1 2015
Shares 3,500 Value ($000) $207 Avg Close — Range —
Q3 2013
Shares 6,900 Value ($000) $222 Avg Close — Range —