ZYGO CORP

CUSIP: 989855101 Class: CMN

CHARLES SCHWAB INVESTMENT MANAGEMENT INC's Holding History (CIK: 0000884546)

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

Q1 2014
Shares 57,684 Value ($000) $877 Avg Close — Range —
Q4 2013
Shares 56,604 Value ($000) $837 Avg Close — Range —
Q3 2013
Shares 56,868 Value ($000) $907 Avg Close — Range —
Q2 2013
Shares 57,084 Value ($000) $891 Avg Close — Range —