GLIATECH INC
8-A12G/A, 1999-11-19
BIOLOGICAL PRODUCTS, (NO DIAGNOSTIC SUBSTANCES)
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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                                   ----------

                                   FORM 8-A/A

                     FOR REGISTRATION OF CERTAIN CLASSES OF
                 SECURITIES PURSUANT TO SECTION 12(b) OR (g) OF
                       THE SECURITIES EXCHANGE ACT OF 1934

                                  GLIATECH INC.
                                  -------------
             (Exact name of registrant as specified in its charter)


              Delaware                                          34-1587242
              --------                                          ----------
(State of incorporation or organization)                      (IRS Employer
                                                           Identification No.)


 23420 Commerce Park Road, Cleveland, Ohio                         44122
 -----------------------------------------                         -----
 (Address of principal executive offices)                       (Zip Code)

If this form relates to the registration of a class of securities
pursuant to Section 12(b) of the Exchange Act and is effective upon filing
pursuant to General Instruction A.(c), please check the following box [ ]

If this form relates to the registration of a class of securities
pursuant to Section 12(g) of the Exchange Act and is effective pursuant to
General Instruction A.(d), please check the following box. [X]

Securities Act registration statement file number to which this form relates:
                                                         N/A
                                                       -------
                                                   (If  applicable)

Securities to be registered pursuant to Section 12(b) of the Act:

     Title of each class                 Name of each exchange on which
     to be so registered                 each class is to be registered
     -------------------                 ------------------------------

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

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


Securities to be registered pursuant to Section 12(g) of the Act:


                       Rights to Purchase Preferred Shares
                       -----------------------------------
                                 Title of class


                       ------------------------------------
                                 Title of class


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ITEM 1.  DESCRIPTION OF SECURITIES TO BE REGISTERED.

         On November 17, 1999, the Board of Directors of Gliatech Inc. (the
"Company") adopted Amendment No. 1 (the "Amendment") to the Rights Agreement,
dated as of July 1, 1997 (the "Rights Agreement"), between the Company and
American Stock Transfer & Trust Company, as rights agent. The Amendment provides
that the State of Wisconsin Investment Board ("SWIB") shall not be deemed to be
an Acquiring Person (as defined in the Rights Agreement) unless and until such
time as SWIB shall have become the Beneficial Owner (as defined in the Rights
Agreement) of a percentage of the Company's Common Shares then outstanding that
equals or exceeds the SWIB Percentage. "SWIB Percentage" means 20% to and
including January 14, 2001, at which time the SWIB Percentage shall be reduced
to (i) 15%, if SWIB is not the Beneficial Owner of 15% or more of the Common
Shares of the Company outstanding at the close of business on January 14, 2001
or (ii) if SWIB is the Beneficial Owner of 15% or more of the Common Shares of
the Company outstanding at the close of business on January 14, 2001, the next
highest whole percentage (which shall not exceed 20%) in excess of the
percentage of Common Shares of the Company then outstanding beneficially owned
by SWIB.

ITEM 2.  EXHIBITS.

         Exhibit
          Number       Exhibit
          ------       -------

            4.1        Amendment No. 1 to the Rights Agreement

           99.1        Press release, dated November 18, 1999


                                       2
<PAGE>   3



                                    SIGNATURE

         Pursuant to the requirements of Section 12 of the Securities Exchange
Act of 1934, the registrant has duly caused this registration statement to be
signed on its behalf by the undersigned, thereto duly authorized.

                               GLIATECH INC.


                               By:      /s/ Rodney E. Dausch
                                   -------------------------------------
                                   Name:    Rodney E. Dausch
                                   Title:   Chief Financial Officer,
                                            Secretary and
                                            Executive Vice President - Finance

Dated:  November 19, 1999


                                       3
<PAGE>   4



         INDEX TO EXHIBITS


        EXHIBIT
        NUMBER           EXHIBIT
        ------           -------

          4.1            Amendment No. 1 to the Rights Agreement

         99.1            Press release, dated November 18, 1999



                                       4

<PAGE>   1

                                                                    Exhibit 4.1


                                  GLIATECH INC.
                            23420 COMMERCE PARK ROAD
                              CLEVELAND, OHIO 44122

                                November 17, 1999


American Stock Transfer & Trust Company
40 Wall Street
New York, NY 10005
Attention:  Barry Rosenthal


                     Re: Amendment No. 1 to Rights Agreement

Ladies and Gentlemen:

         Pursuant to Section 27 of the Rights Agreement (the "Rights
Agreement"), dated as of July 1, 1997, between Gliatech Inc. (the "Company"),
and American Stock Transfer & Trust Company, as rights agent, the Company, by
resolution adopted by its Board of Directors, hereby amends the Rights Agreement
as follows:

         1. Section 1 of the Rights Agreement is hereby amended by adding the
following Subsections (dd) and (ee) at the end of such Section:

         (dd)    "SWIB" shall mean the State of Wisconsin Investment Board.

         (ee)    "SWIB Percentage" shall mean 20% to and including January 14,
                 2001, at which time the SWIB Percentage shall be reduced to (i)
                 15%, if SWIB is not the Beneficial Owner of 15% or more of the
                 Common Shares of the Company outstanding at the close of
                 business on January 14, 2001 or (ii) if SWIB is the Beneficial
                 Owner of 15% or more of the Common Shares of the Company
                 outstanding at the close of business on January 14, 2001, the
                 next highest whole percentage (which shall not exceed 20%) in
                 excess of the percentage of Common Shares of the Company then
                 outstanding beneficially owned by SWIB.

         2. Section 1(a) of the Rights Agreement is hereby amended and
restated in its entirety as follows:

         (a)     "Acquiring Person" means any Person (other than the Company,
                 any Related Person or SWIB (unless and until SWIB shall have
                 become the Beneficial Owner of a percentage of Common Shares
                 then outstanding that equals or exceeds the SWIB Percentage, at
                 which time SWIB shall be an Acquiring Person)) who or which,
                 together with all Affiliates and Associates of such Person, is
                 the Beneficial Owner of 15% or more of the then-outstanding
                 Common Shares; provided, however, that a Person will not be
                 deemed to have become an Acquiring Person


<PAGE>   2

American Stock Transfer & Trust Company
November 17, 1999
Page 2


                 solely as a result of a reduction in the number of Common
                 Shares outstanding unless and until such time as (i) such
                 Person or any Affiliate or Associate of such Person thereafter
                 becomes the Beneficial Owner of additional Common Shares
                 representing 1% or more of the then-outstanding Common Shares,
                 other than as a result of a stock dividend, stock split or
                 similar transaction effected by the Company in which all
                 holders of Common Shares are treated equally, or (ii) any other
                 Person who is the Beneficial Owner of Common Shares
                 representing 1% or more of the then-outstanding Common Shares
                 thereafter becomes an Affiliate or Associate of such Person.
                 Notwithstanding the foregoing, if the Board of Directors of the
                 Company determines in good faith that a Person who would
                 otherwise be an "Acquiring Person" as defined pursuant to the
                 foregoing provisions of this paragraph (a), has become such
                 inadvertently, and such Person divests as promptly as
                 practicable a sufficient number of Common Shares so that such
                 Person would no longer be an "Acquiring Person" as defined
                 pursuant to the foregoing provisions of this paragraph (a),
                 then such Person shall not be deemed to be an "Acquiring
                 Person" for any purposes of this Agreement.

         3. The Rights Agreement shall not otherwise be supplemented or amended
by virtue of this Amendment No. 1 to the Rights Agreement, but shall remain in
full force and effect.

         4. Capitalized terms used without other definition in this Amendment
No. 1 to the Rights Agreement shall be used as defined in the Rights Agreement.

         5. This Amendment No. 1 to the Rights Agreement shall be deemed to be a
contract made under the laws of the State of Delaware and for all purposes will
be governed by and construed in accordance with the laws of such State
applicable to contracts to be made and performed entirely within such State.

         6. This Amendment No. 1 to the Rights Agreement may be executed in any
number of counterparts and each of such counterparts shall for all purposes be
deemed to be an original, and all such counterparts shall together constitute
but one and the same instrument.

         7. This Amendment No. 1 to the Rights Agreement shall be effective as
of, and immediately prior to, the earlier of (i) execution and delivery of the
Merger Agreement and (ii) the execution and delivery of the Option Agreement,
and all references to the Rights Agreement shall, from and after such time, be
deemed to be references to the Rights Agreement as amended hereby.



<PAGE>   3



American Stock Transfer & Trust Company
November 17, 1999
Page 3

         8. Exhibits B and C to the Rights Agreement shall be deemed amended in
a manner consistent with this Amendment No. 1 to the Rights Agreement.


                              Very truly yours,

                              Gliatech Inc.


                              By: /s/ Rodney E. Dausch
                                  ---------------------------------
                                  Name:  Rodney E. Dausch
                                  Title: Chief Financial Officer,
                                         Secretary and
                                         Executive Vice President - Finance


Accepted and agreed to as of the
effective time specified above:

American Stock Transfer & Trust Company


By: /s/ Herbert J. Lemmer
   -------------------------------------
   Name: Herbert J. Lemmer
   Title: Vice President


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                                                                   Exhibit 99.1


GLIATECH


23420 Commerce Park Road
Cleveland, Ohio  44122  USA
Tel (216) 831-3200 Fax (216) 831-4220


FOR IMMEDIATE RELEASE


                                    Contact:  Thomas O. Oesterling, Ph.D.
                                    President and Chief Executive Officer
                                                            Gliatech Inc.
                                                           (216) 831-3200


             GLIATECH ANNOUNCES AMENDMENT TO STOCKHOLDER RIGHTS PLAN


Cleveland, Ohio--November 18, 1999--Gliatech Inc. (Nasdaq: GLIA) announced today
that its Board of Directors has amended Gliatech's stockholder rights agreement.
The amendment allows the State of Wisconsin Investment Board to own up to 20% of
the Company's then outstanding common stock in certain circumstances without
being deemed to be an Acquiring Person pursuant to the rights agreement.

Gliatech is a leader in the discovery and development of therapeutic products
based on the properties of glial cells. The Company applies its core glial
research to developing innovative products for major unmet human health care
needs. Current development initiatives are targeting products to improve
surgical outcomes and to treat neurological disorders.



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