ZOLTEK COS INC

CUSIP: 98975W104 Class: CMN

D L CARLSON INVESTMENT GROUP INC's Holding History (CIK: 0001021117)

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

Q4 2013
Shares 11,400 Value ($000) $191 Avg Close — Range —
Q3 2013
Shares 11,400 Value ($000) $190 Avg Close — Range —
Q2 2013
Shares 12,900 Value ($000) $167 Avg Close — Range —