ZYGO CORP

CUSIP: 989855101 Class: CMN

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

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

Q1 2014
Shares 297,500 Value ($000) $4,519 Avg Close — Range —
Q4 2013
Shares 295,000 Value ($000) $4,360 Avg Close — Range —
Q3 2013
Shares 295,000 Value ($000) $4,714 Avg Close — Range —
Q2 2013
Shares 295,000 Value ($000) $4,673 Avg Close — Range —