ZYGO CORP

CUSIP: 989855101 Class: CMN

NORTHERN TRUST CORP's Holding History (CIK: 0000073124)

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

Q1 2014
Shares 233,150 Value ($000) $3,541 Avg Close — Range —
Q4 2013
Shares 244,623 Value ($000) $3,615 Avg Close — Range —
Q3 2013
Shares 267,878 Value ($000) $4,280 Avg Close — Range —
Q2 2013
Shares 237,856 Value ($000) $3,768 Avg Close — Range —