ZYGO CORP

CUSIP: 989855101 Class: CMN

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM's Holding History (CIK: 0001081019)

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

Q1 2014
Shares 30,168 Value ($000) $458 Avg Close — Range —
Q4 2013
Shares 30,168 Value ($000) $446 Avg Close — Range —
Q3 2013
Shares 29,968 Value ($000) $479 Avg Close — Range —
Q2 2013
Shares 28,993 Value ($000) $458 Avg Close — Range —
Q1 2013
Shares 28,332 Value ($000) $420 Avg Close — Range —