EXHIBIT 99
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[ZOLTEK logo]

FOR IMMEDIATE RELEASE                               NASDAQ NMS SYMBOL:  "ZOLT"
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           ZOLTEK COMPANIES, INC. REPORTS FAVORABLE DEVELOPMENTS IN
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                             SP SYSTEMS LITIGATION
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         ST. LOUIS, MISSOURI -- APRIL 12, 2007 -- Zoltek Companies, Inc. today
reported the results of various post-trial motions in pending litigation
against its Zoltek Corporation subsidiary brought by Structural Polymer Group
Limited. Judge Carol E. Jackson has granted Zoltek's motion to reduce the
judgment entered in December 2006 from $36.0 million to $21.1 million,
concluding that the jury's award of damages on the two separate counts brought
by the plaintiffs was "duplicative."

         In addition, the Court issued an Order setting the amount of a
supersedeas bond at $23.5 million in order to stay the execution of the
amended judgment pending Zoltek's appeal, and denied Zoltek's post-trial
motions for a new trial and for a judgment in its favor as a matter of law.

         Zsolt Rumy, Chairman and CEO, stated, "We obviously are pleased the
Court confirmed our view that the jury verdicts were duplicative. Although the
outcome of any litigation necessarily is uncertain, we continue to believe
that we have strong legal grounds to overturn the amended judgment on appeal
and we look forward to presenting those arguments to the Court of Appeals. The
bottom line is that this litigation will not distract us from continuing to
execute our mission of leading commercial development of the carbon fibers
industry."

         The Company previously reported that it had arranged financing for a
bond utilizing a $10.0 million loan collateralized by certain real estate of
the Company at an interest rate of 7.5% that matures January 1, 2008 and a
$10.0 million loan from the Company's Chief Executive Officer bearing interest
at the Chief Executive Officer's cost of funds rate and which matures January
2, 2008. There are no financial covenants associated with the above-described
loans. The Company also will use $3.5 million of its cash on hand for the
balance of the funds required to post the bond, which includes the proceeds
from the exercise in December 2006 of warrants to purchase 827,789 shares of
common stock for $11.9 million by institutional investors.

         Zoltek accrued $21.8 million during the fourth quarter of its 2006
fiscal year in respect of the potential liability and costs of defense in this
matter. The Company expects that such accrual will be adequate and that the
ultimate resolution of this litigation will not have a material adverse effect
on the Company's future results of operations, financial condition or cash
flows.








[ZOLTEK logo]

Zoltek Companies, Inc. Reports Favorable Developments In SP Systems Litigation
Page 2
April 12, 2007


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                       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: successfully resolve pending litigation; re-activate its formerly idle
manufacturing facilities on a timely and cost-effective basis, 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; 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.





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