PROOFPOINT INC

CUSIP: 743424AD5 Class: NOTE

GAMCO INVESTORS, INC. ET AL's Holding History (CIK: 0000807249)

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

Q2 2018
Shares 200,000 Value ($000) $293 Avg Close — Range —
Q1 2018
Shares 250,000 Value ($000) $365 Avg Close — Range —
Q4 2017
Shares 250,000 Value ($000) $313 Avg Close — Range —
Q3 2017
Shares 250,000 Value ($000) $312 Avg Close — Range —
Q2 2017
Shares 200,000 Value ($000) $249 Avg Close — Range —
Q1 2017
Shares 200,000 Value ($000) $228 Avg Close — Range —