Exhibit 99.2

[ZOLTEK logo]

FOR IMMEDIATE RELEASE
- ---------------------

                     ZOLTEK NAMES CHIEF ACCOUNTING OFFICER
                     -------------------------------------

         ST. LOUIS, MISSOURI -- MAY 12, 2008 -- Zoltek Companies, Inc.
(Nasdaq: ZOLT) today announced that Andrew W. Whipple has been appointed by
the Board of Directors as Vice President and Chief Accounting Officer. As Vice
President and Chief Accounting Officer, Mr. Whipple will assume responsibility
for accounting, financial reporting and internal controls at Zoltek.
         "Andy brings to Zoltek a wealth of experience as an accountant and
senior financial officer at several companies," said Zsolt Rumy, Zoltek's
Chairman and Chief Executive Officer. "We expect that his expertise,
experience and leadership will be a great asset as we move forward to grow our
business and ensure adherence to the highest level of accounting standards."
         Whipple, 44, served as a Senior Manager in the St. Louis office of
Deloitte & Touche, LLP where he worked from 1993 to 1998, when he joined
Digital Teleport, Inc. as its Controller and was later promoted to Chief
Financial Officer. After Digital Teleport was acquired by CenturyTel in June
of 2003, he became Vice President of Operational Support at the big
telecommunications company and served there for four years prior to joining E3
Biofuels as its Chief Financial Officer. He is a 1985 graduate of Virginia
Tech with a degree in accounting.

                       FOR FURTHER INFORMATION CONTACT:
                                ZSOLT RUMY, CEO
                              3101 MCKELVEY ROAD
                              ST. LOUIS, MO 63044
                                (314) 291-5110

This press release contains statements that are based on the current
expectations of our company. You are cautioned that any such forward-looking
statements are not guarantees of future performance and involve risks and
uncertainties, and that actual results may differ materially from those
projected in the forward-looking statements as a result of various factors.
The factors that might cause such differences include, among others, our
ability to: (1) successfully resolve pending litigation; (2) continue to
improve efficiency at our manufacturing facilities on a timely and
cost-effective basis to meet current order levels of carbon fibers; (3)
successfully add new planned capacity for the production of carbon fiber and
precursor raw materials and meet our obligations under long-term supply
agreements; (4) achieve profitable operations; (5) raise new capital and
increase our borrowing at acceptable costs; (6) manage changes in customers'
forecasted requirements for our products; (7) continue investing in
application and market development in a range of industries; (8) manufacture
low-cost carbon fibers and profitably market them; (9) penetrate existing,
identified and emerging markets; (10) successfully retrofit our recently
acquired Mexican facility to manufacture acrylic fiber precursor and add
carbon fiber production lines; (11) resolve on a timely basis the pending
investigation by our Audit Committee of two unauthorized transactions as
described in our Current Report on Form 8-K filed May 5, 2008; and (12) manage
the risks identified under "Risk Factors" in our filings with the SEC.