ZOLTEK COS INC

CUSIP: 98975W104 Class: CMN

GAMCO INVESTORS, INC. ET AL's Holding History (CIK: 0000807249)

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

Q4 2013
Shares 339,500 Value ($000) $5,687 Avg Close — Range —
Q3 2013
Shares 79,000 Value ($000) $1,319 Avg Close — Range —