ZYGO CORP

CUSIP: 989855101 Class: CMN

PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO's Holding History (CIK: 0000315297)

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

Q1 2014
Shares 12,222 Value ($000) $186 Avg Close — Range —
Q4 2013
Shares 12,222 Value ($000) $181 Avg Close — Range —
Q3 2013
Shares 12,222 Value ($000) $195 Avg Close — Range —
Q2 2013
Shares 12,222 Value ($000) $193 Avg Close — Range —