EXHIBIT 99
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[ZOLTEK logo]

FOR IMMEDIATE RELEASE                               NASDAQ NMS SYMBOL:  "ZOLT"
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                      ZOLTEK COMPLIES WITH NASDAQ RULE

         ST. LOUIS, MISSOURI -- MAY 25, 2005 -- Zoltek Companies, Inc. today
announced that it has been notified by The Nasdaq Stock Market that Zoltek
is now in full compliance with Nasdaq's periodic filing requirements based
on the filing of the Company's Form 10-Q for the period ended March 31,
2005. As a result, Nasdaq has informed Zoltek that its common stock is no
longer subject to delisting due to the delay in filing Zoltek's 10-Q, and
that Nasdaq will remove the fifth character "E" from the Company's trading
symbol at the opening of business on May 27, 2005. Zoltek's Chief Executive
officer, Zsolt Rumy, commented "We are pleased that this short lived issue,
which is unrelated to the operating aspects of our business has been
successfully resolved."

                      FOR FURTHER INFORMATION CONTACT:

                    ZSOLT RUMY, CEO OR KEVIN SCHOTT, CFO
                             3101 MCKELVEY ROAD
                             ST. LOUIS, MO 63044
                               (314) 291-5110

This press release contains forward-looking statements, which are based upon
the current expectations of the Company. Because these forward-looking
statements are inherently subject to risks and uncertainties, there are a
number of factors that could cause the Company's plans, actions and actual
results to differ materially. Among these factors are the Company's ability
to: re-activate its formerly idle manufacturing facilities on a timely and
cost-effective basis, to meet current order levels for carbon fibers;
successfully add new capacity for the production of carbon fiber and
precursor raw material; execute plans to exit its specialty products
business and reduce costs; achieve profitable operations; maintain its
Nasdaq National Market listing and raise new capital and increase its
borrowing at acceptable costs; manage changes in customers' forecasted
requirements for the Company's products; continue investing in application
and market development; manufacture low-cost carbon fibers and profitably
market them; and penetrate existing, identified and emerging markets. The
timing and occurrence (or non-occurrence) of transactions and events that
determine the future effect of these factors on the Company, as well as
other factors, may be beyond the control of the Company. The Company
undertakes no obligation to update any forward-looking statement to reflect
events or circumstances after the date of this press release.