ZOLTEK COS INC

CUSIP: 98975W104 Class: CMN

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

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

Q4 2013
Shares 22,390 Value ($000) $375 Avg Close — Range —
Q3 2013
Shares 22,390 Value ($000) $374 Avg Close — Range —
Q2 2013
Shares 22,390 Value ($000) $289 Avg Close — Range —