UNITED STATES
                     SECURITIES AND EXCHANGE COMMISSION
                           WASHINGTON, D.C. 20549


                     ----------------------------------


                                  FORM 8-K


                               CURRENT REPORT


                     PURSUANT TO SECTION 13 OR 15(d) OF
                     THE SECURITIES EXCHANGE ACT OF 1934


     Date of Report (Date of earliest event reported): December 29, 2004



                           ZOLTEK COMPANIES, INC.
           (Exact name of registrant as specified in its charter)


      MISSOURI                        0-20600                   43-1311101
   (State or other               (Commission File            (I.R.S. Employer
   jurisdiction of                    Number)                 Identification
    organization)                                                 Number)

   3101 MCKELVEY ROAD
   ST. LOUIS, MISSOURI                                            63044
   (Address of principal executive offices)                     (Zip Code)


                               (314) 291-5110
            (Registrant's telephone number, including area code)

         Check the appropriate box below if the Form 8-K filing is intended
to simultaneously satisfy the filing obligation of the registrant under any
of the following provisions:

     [ ] Written communications pursuant to Rule 425 under the Securities Act.
     [ ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act.
     [ ] Pre-commencement communications pursuant to Rule 14d-2(b) under
         the Exchange Act.
     [ ] Pre-commencement communications pursuant to Rule 13e-4(c) under
         the Exchange Act.



ITEM 2.02         RESULTS OF OPERATIONS AND FINANCIAL CONDITION.

                  On December 29, 2004, Zoltek Companies, Inc. (the
"Registrant") issued a press release announcing its financial results for
the quarter and fiscal year ended September 30, 2004. A copy of the press
release is attached hereto and incorporated herein as Exhibit 99. This Form
8-K, including Exhibit 99 attached hereto, shall not be deemed "filed" for
purposes of Section 18 of the Securities Exchange Act of 1934, as amended,
or otherwise subject to the liabilities of that section.

ITEM  9.01        FINANCIAL STATEMENTS AND EXHIBITS.

                  (c) The following exhibit is filed as part of this report:

                  Exhibit Number                   Description
                  --------------                   -----------

                       99              Press Release issued by the Company
                                       on December 29, 2004.



                                 *    *    *



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                                 SIGNATURES

                  Pursuant to the requirements of the Securities Exchange
Act of 1934, the Registrant has duly caused this report to be signed on its
behalf by the undersigned thereunto duly authorized.

Dated: January 3, 2005

                                        ZOLTEK COMPANIES, INC.



                                        By   /s/ KEVIN SCHOTT
                                           ------------------------------------
                                           Kevin Schott
                                           Chief Financial Officer




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                                EXHIBIT INDEX



 Exhibit
 Number                           Description
 ------                           -----------

   99                 Press Release, dated December 29, 2004.







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