CHYRON CORP
SC 13D, 1995-08-04
PHOTOGRAPHIC EQUIPMENT & SUPPLIES
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                                UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                  SCHEDULE 13D


                   Under the Securities Exchange Act of 1934
                               (Amendment No. )*

                               Chyron Corporation
                                (Name of Issuer)

                          Common Stock, $.01 par value
                         (Title of Class of Securities)

                                   171605108
                                 (CUSIP Number)

                            Dennis J. Friedman, Esq.
                               Chadbourne & Parke
                              30 Rockefeller Plaza
                               New York, NY 10012
                                 (212) 408-5100
          (Name, Address and Telephone Number of Person Authorized to
                      Receive Notices and Communications)

                                 July 25, 1995
            (Date of Event which Requires Filing of this Statement)

If the filing person has previously  filed a statement on Schedule 13G to report
the  acquisition  which is the subject of this  Schedule 13D, and is filing this
schedule because of Rule 13d-1(b)(3) or (4), check the following box |_|
                                                                               
Check the following box if a fee is being paid with the statement |X|. (A fee is
not required only if the reporting person:  (1) has a previous statement on file
reporting  beneficial  ownership  of more  than  five  percent  of the  class of
securities  described  in Item 1;  and (2) has  filed  no  amendment  subsequent
thereto reporting  beneficial  ownership of five percent or less of such class.)
(See Rule 13d-7.)

Note: Six copies of this statement, including all exhibits, should be filed with
the  Commission.  See Rule  13d-1(a) for other  parties to whom copies are to be
sent.

*The  remainder of this cover page shall be filled out for a reporting  person's
initial filing on this form with respect to the subject class of securities, and
for  any  subsequent   amendment   containing   information  which  would  alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the  Securities  Exchange  Act of
1934 ("Act") or otherwise  subject to the liabilities of that section of the Act
but  shall be  subject  to all other  provisions  of the Act  (however,  see the
Notes).



<PAGE>
                                  SCHEDULE 13D

CUSIP No. 171605108                                          Page 2 of 29 Pages
                                                                ----  ------    
  1      NAME OF REPORTING PERSON
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

         WPG Corporate Development Associates IV, L.P.
   
   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*             (a)  |_|

                                                                       (b)  |X|
   3     SEC USE ONLY


   4     SOURCE OF FUNDS*

         WC

   5     CHECK BOX IF DISCLOSURE OF LEGAL  PROCEEDINGS  IS REQUIRED
         PURSUANT TO ITEMS 2(d) or 2(e)                                     |_|

   6     CITIZENSHIP OR PLACE OF ORGANIZATION

         Delaware
    
              
    NUMBER OF        7     SOLE VOTING POWER

     SHARES                20,060,755 shares
                     
  BENEFICIALLY       8     SHARED VOTING POWER

    OWNED BY               -0-
      EACH           
                     9     SOLE DISPOSITIVE POWER
    REPORTING
                           17,770,615 shares
     PERSON          
                     10    SHARED DISPOSITIVE POWER
      WITH
                           -0-

   11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         20,060,755 shares

   12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11)
         EXCLUDES CERTAIN SHARES*                                           |_|

   13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         22.9%

   14   TYPE OF REPORTING PERSON*

         PN

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
                     INCLUDE BOTH SIDES OF THE COVER PAGE,
                 RESPONSES TO ITEMS 1-7 (INCLUDING EXHIBITS) OF
                  THE SCHEDULE, AND THE SIGNATURE ATTESTATION.


<PAGE>
                                  SCHEDULE 13D


CUSIP No. 171605108                                          Page 3 of 29 Pages
                                                                ----  ------   
  1     NAME OF REPORTING PERSON
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

         WPG Corporate Development Associates IV (Overseas), L.P.

   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*             (a)  |_|

                                                                       (b)  |X| 

   3     SEC USE ONLY



   4     SOURCE OF FUNDS*

         WC

   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
         PURSUANT TO ITEMS 2(d) or 2(e)                                     |_|


   6     CITIZENSHIP OR PLACE OF ORGANIZATION

         Cayman Islands
             
    NUMBER OF        7     SOLE VOTING POWER

     SHARES                4,873,540 shares
                     
  BENEFICIALLY       8     SHARED VOTING POWER

    OWNED BY               -0-
      EACH           
                     9     SOLE DISPOSITIVE POWER
    REPORTING
                           4,285,120 shares
     PERSON          
                     10    SHARED DISPOSITIVE POWER
      WITH
                           -0-

   11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         4,837,540 shares

   12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11)
         EXCLUDES CERTAIN SHARES*                                           |_|


   13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         5.5%

   14   TYPE OF REPORTING PERSON*

        PN

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
                     INCLUDE BOTH SIDES OF THE COVER PAGE,
                 RESPONSES TO ITEMS 1-7 (INCLUDING EXHIBITS) OF
                  THE SCHEDULE, AND THE SIGNATURE ATTESTATION.


<PAGE>
                                  SCHEDULE 13D


CUSIP No. 171605108                                          Page 4 of 29 Pages
                                                                ----  ------   
   1     NAME OF REPORTING PERSON
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

         WPG Enterprise Fund II, L.P.

   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*             (a)  |_|

                                                                       (b)  |X|

   3     SEC USE ONLY



   4     SOURCE OF FUNDS*

         WC

   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
         PURSUANT TO ITEMS 2(d) or 2(e)                                     |_|


   6     CITIZENSHIP OR PLACE OF ORGANIZATION

         Delaware
             
    NUMBER OF        7     SOLE VOTING POWER

     SHARES                4,984,717 shares
                     
  BENEFICIALLY       8     SHARED VOTING POWER

    OWNED BY               -0- 
      EACH           
                     9     SOLE DISPOSITIVE POWER
    REPORTING
                           4,415,557 shares
     PERSON          
                     10    SHARED DISPOSITIVE POWER
      WITH
                           -0-

   11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         4,984,717 shares

   12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11)
         EXCLUDES CERTAIN SHARES*                                           |_|


   13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         5.7%

   14   TYPE OF REPORTING PERSON*

        PN

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
                     INCLUDE BOTH SIDES OF THE COVER PAGE,
                 RESPONSES TO ITEMS 1-7 (INCLUDING EXHIBITS) OF
                  THE SCHEDULE, AND THE SIGNATURE ATTESTATION.


<PAGE>
                                  SCHEDULE 13D


CUSIP No. 171605108                                          Page 5 of 29 Pages
                                                                ----  ------   
   1     NAME OF REPORTING PERSON
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

         Weiss, Peck & Greer Venture Associates III, L.P.

   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*             (a)  |_|

                                                                       (b)  |X|

   3     SEC USE ONLY



   4     SOURCE OF FUNDS*

         WC

   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
         PURSUANT TO ITEMS 2(d) or 2(e)                                     |_|


   6     CITIZENSHIP OR PLACE OF ORGANIZATION

         Delaware
             
    NUMBER OF        7     SOLE VOTING POWER

     SHARES                4,144,585 shares
                     
  BENEFICIALLY       8     SHARED VOTING POWER

    OWNED BY               -0- 
      EACH           
                     9     SOLE DISPOSITIVE POWER
    REPORTING
                           3,671,545 shares
     PERSON          
                     10    SHARED DISPOSITIVE POWER
      WITH
                           -0-

   11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         4,144,585 shares

   12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11)
         EXCLUDES CERTAIN SHARES*                                           |_|


   13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         4.7%

   14   TYPE OF REPORTING PERSON*

        PN

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
                     INCLUDE BOTH SIDES OF THE COVER PAGE,
                 RESPONSES TO ITEMS 1-7 (INCLUDING EXHIBITS) OF
                  THE SCHEDULE, AND THE SIGNATURE ATTESTATION.


<PAGE>
                                  SCHEDULE 13D


CUSIP No. 171605108                                          Page 6 of 29 Pages
                                                                ----  ------   
   1     NAME OF REPORTING PERSON
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

         WPG Private Equity Partners, L.P.

   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*             (a)  |_|

                                                                       (b)  |X|

   3     SEC USE ONLY



   4     SOURCE OF FUNDS*

         N/A

   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
         PURSUANT TO ITEMS 2(d) or 2(e)                                     |_|


   6     CITIZENSHIP OR PLACE OF ORGANIZATION

         Delaware
             
    NUMBER OF        7     SOLE VOTING POWER

     SHARES                20,060,755 shares
                     
  BENEFICIALLY       8     SHARED VOTING POWER

    OWNED BY               -0-
      EACH           
                     9     SOLE DISPOSITIVE POWER
    REPORTING
                           17,770,615 shares
     PERSON          
                     10    SHARED DISPOSITIVE POWER
      WITH
                           -0-

   11    AGGREGATE AMOUNT BENEtFICIALLY OWNED BY EACH REPORTING PERSON

         20,060,755 shares

   12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11)
         EXCLUDES CERTAIN SHARES*                                           |_|


   13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         22.9%

   14   TYPE OF REPORTING PERSON*

        PN

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
                     INCLUDE BOTH SIDES OF THE COVER PAGE,
                 RESPONSES TO ITEMS 1-7 (INCLUDING EXHIBITS) OF
                  THE SCHEDULE, AND THE SIGNATURE ATTESTATION.


<PAGE>
                                  SCHEDULE 13D


CUSIP No. 171605108                                          Page 7 of 29 Pages
                                                                ----  ------  

   1     NAME OF REPORTING PERSON
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

         WPG CDA IV (Overseas), Ltd.

   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*             (a)  |_|

                                                                       (b)  |X|

   3     SEC USE ONLY



   4     SOURCE OF FUNDS*

         N/A

   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
         PURSUANT TO ITEMS 2(d) or 2(e)                                     |_|


   6     CITIZENSHIP OR PLACE OF ORGANIZATION

         Cayman Islands
             
    NUMBER OF        7     SOLE VOTING POWER

     SHARES                -0-
                     
  BENEFICIALLY       8     SHARED VOTING POWER

    OWNED BY               4,837,540 shares
      EACH           
                     9     SOLE DISPOSITIVE POWER
    REPORTING
                           -0-
     PERSON          
                     10    SHARED DISPOSITIVE POWER
      WITH
                            4,285,120 shares

   11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         4,837,540 shares

   12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11)
         EXCLUDES CERTAIN SHARES*                                           |_|


   13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         5.5%

   14   TYPE OF REPORTING PERSON*

        CO

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
                     INCLUDE BOTH SIDES OF THE COVER PAGE,
                 RESPONSES TO ITEMS 1-7 (INCLUDING EXHIBITS) OF
                  THE SCHEDULE, AND THE SIGNATURE ATTESTATION.


<PAGE>



                                  SCHEDULE 13D


CUSIP No. 171605108                                          Page 8 of 29 Pages
                                                                ----  ------  

   1     NAME OF REPORTING PERSON
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

         WPG Private Equity Partners (Overseas), L.P.

   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*             (a)  |_|

                                                                       (b)  |X|

   3     SEC USE ONLY



   4     SOURCE OF FUNDS*

         N/A

   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
         PURSUANT TO ITEMS 2(d) or 2(e)                                     |_|


   6     CITIZENSHIP OR PLACE OF ORGANIZATION

         Delaware
             
    NUMBER OF        7     SOLE VOTING POWER

     SHARES                -0-
                     
  BENEFICIALLY       8     SHARED VOTING POWER

    OWNED BY               4,837,540 shares
      EACH           
                     9     SOLE DISPOSITIVE POWER
    REPORTING
                           -0-
     PERSON          
                     10    SHARED DISPOSITIVE POWER
      WITH
                           4,285,120 shares

   11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         4,837,540 shares

   12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11)
         EXCLUDES CERTAIN SHARES*                                           |_|


   13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         5.5%

   14   TYPE OF REPORTING PERSON*

        PN

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
                     INCLUDE BOTH SIDES OF THE COVER PAGE,
                 RESPONSES TO ITEMS 1-7 (INCLUDING EXHIBITS) OF
                  THE SCHEDULE, AND THE SIGNATURE ATTESTATION.


<PAGE>
                                  SCHEDULE 13D


CUSIP No. 171605108                                          Page 9 of 29 Pages
                                                                ----  ------   

   1     NAME OF REPORTING PERSON
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

         WPG Venture Partners III, L.P.

   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*             (a)  |_|

                                                                       (b)  |X|

   3     SEC USE ONLY



   4     SOURCE OF FUNDS*

         N/A

   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
         PURSUANT TO ITEMS 2(d) or 2(e)                                     |_|


   6     CITIZENSHIP OR PLACE OF ORGANIZATION

         Delaware
             
    NUMBER OF        7     SOLE VOTING POWER

     SHARES                9,129,302 shares
                     
  BENEFICIALLY       8     SHARED VOTING POWER

    OWNED BY               -0-
      EACH           
                     9     SOLE DISPOSITIVE POWER
    REPORTING
                           8,087,102 shares
     PERSON          
                     10    SHARED DISPOSITIVE POWER
      WITH
                           -0-

   11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         9,129,302 shares

   12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11)
         EXCLUDES CERTAIN SHARES*                                           |_|


   13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         10.4%

   14   TYPE OF REPORTING PERSON*

        PN

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
                     INCLUDE BOTH SIDES OF THE COVER PAGE,
                 RESPONSES TO ITEMS 1-7 (INCLUDING EXHIBITS) OF
                  THE SCHEDULE, AND THE SIGNATURE ATTESTATION.


<PAGE>
                                  SCHEDULE 13D


CUSIP No. 171605108                                         Page 10 of 29 Pages
                                                                ----  ------

   1     NAME OF REPORTING PERSON
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

         Steven N. Hutchinson

   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*             (a)  |_|

                                                                       (b)  |X|

   3     SEC USE ONLY



   4     SOURCE OF FUNDS*

         N/A

   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
         PURSUANT TO ITEMS 2(d) or 2(e)                                     |_|


   6     CITIZENSHIP OR PLACE OF ORGANIZATION

         United States 
             
    NUMBER OF        7     SOLE VOTING POWER

     SHARES                -0-
                     
  BENEFICIALLY       8     SHARED VOTING POWER

    OWNED BY               24,898,295 shares
      EACH           
                     9     SOLE DISPOSITIVE POWER
    REPORTING
                           -0-
     PERSON          
                     10    SHARED DISPOSITIVE POWER
      WITH
                           22,055,735 shares

   11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         24,898,295 shares

   12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11)
         EXCLUDES CERTAIN SHARES*                                           |_|


   13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         28.4%

   14   TYPE OF REPORTING PERSON*

        IN

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
                     INCLUDE BOTH SIDES OF THE COVER PAGE,
                 RESPONSES TO ITEMS 1-7 (INCLUDING EXHIBITS) OF
                  THE SCHEDULE, AND THE SIGNATURE ATTESTATION.


<PAGE>
                                  SCHEDULE 13D


CUSIP No. 171605108                                         Page 11 of 29 Pages
                                                                ----  ------   

   1     NAME OF REPORTING PERSON
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

         Wesley W. Lang, Jr.

   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*             (a)  |_|

                                                                       (b)  |X|

   3     SEC USE ONLY



   4     SOURCE OF FUNDS*

         N/A

   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
         PURSUANT TO ITEMS 2(d) or 2(e)                                     |_|


   6     CITIZENSHIP OR PLACE OF ORGANIZATION

         United States
             
    NUMBER OF        7     SOLE VOTING POWER

     SHARES                -0-
                     
  BENEFICIALLY       8     SHARED VOTING POWER

    OWNED BY               24,898,295 shares
      EACH           
                     9     SOLE DISPOSITIVE POWER
    REPORTING
                           -0-              
     PERSON          
                     10    SHARED DISPOSITIVE POWER
      WITH
                           22,055,735 shares

   11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         24,898,295 shares

   12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11)
         EXCLUDES CERTAIN SHARES*                                           |_|


   13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         28.4%

   14   TYPE OF REPORTING PERSON*

        IN

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
                     INCLUDE BOTH SIDES OF THE COVER PAGE,
                 RESPONSES TO ITEMS 1-7 (INCLUDING EXHIBITS) OF
                  THE SCHEDULE, AND THE SIGNATURE ATTESTATION.


<PAGE>
                                  SCHEDULE 13D


CUSIP No. 171605108                                         Page 12 of 29 Pages
                                                                ----  ------   

   1     NAME OF REPORTING PERSON
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

         Philip Greer

   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*             (a)  |_|

                                                                       (b)  |X|

   3     SEC USE ONLY



   4     SOURCE OF FUNDS*

         N/A

   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
         PURSUANT TO ITEMS 2(d) or 2(e)                                     |_|


   6     CITIZENSHIP OR PLACE OF ORGANIZATION

         United States
             
    NUMBER OF        7     SOLE VOTING POWER

     SHARES                -0-
                     
  BENEFICIALLY       8     SHARED VOTING POWER

    OWNED BY               13,966,842 shares
      EACH           
                     9     SOLE DISPOSITIVE POWER
    REPORTING
                           -0-
     PERSON          
                     10    SHARED DISPOSITIVE POWER
      WITH
                           12,372,222 shares
                           
   11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         13,966,842 shares

   12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11)
         EXCLUDES CERTAIN SHARES*                                           |_|


   13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         15.9%

   14   TYPE OF REPORTING PERSON*

        IN

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
                     INCLUDE BOTH SIDES OF THE COVER PAGE,
                 RESPONSES TO ITEMS 1-7 (INCLUDING EXHIBITS) OF
                  THE SCHEDULE, AND THE SIGNATURE ATTESTATION.


<PAGE>
                                  SCHEDULE 13D


CUSIP No. 171605108                                         Page 13 of 29 Pages
                                                                ----  ------   

   1     NAME OF REPORTING PERSON
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

         Gill Cogan

   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*             (a)  |_|

                                                                       (b)  |X|

   3     SEC USE ONLY



   4     SOURCE OF FUNDS*

         N/A

   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
         PURSUANT TO ITEMS 2(d) or 2(e)                                     |_|


   6     CITIZENSHIP OR PLACE OF ORGANIZATION

         United States
             
    NUMBER OF        7     SOLE VOTING POWER

     SHARES                -0-
                     
  BENEFICIALLY       8     SHARED VOTING POWER

    OWNED BY               9,129,302 shares
      EACH           
                     9     SOLE DISPOSITIVE POWER
    REPORTING                
                           -0-
     PERSON          
                     10    SHARED DISPOSITIVE POWER
      WITH
                           8,087,102 shares

   11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         9,129,302 shares

   12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11)
         EXCLUDES CERTAIN SHARES*                                           |_|


   13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         10.4%

   14   TYPE OF REPORTING PERSON*

        IN

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
                     INCLUDE BOTH SIDES OF THE COVER PAGE,
                 RESPONSES TO ITEMS 1-7 (INCLUDING EXHIBITS) OF
                  THE SCHEDULE, AND THE SIGNATURE ATTESTATION.


<PAGE>
                                  SCHEDULE 13D


CUSIP No. 171605108                                         Page 14 of 29 Pages
                                                                ----  ------   

   1     NAME OF REPORTING PERSON
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

         Westpool Investment Trust plc

   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*             (a)  |_|

                                                                       (b)  |X|

   3     SEC USE ONLY



   4     SOURCE OF FUNDS*

         WC

   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
         PURSUANT TO ITEMS 2(d) or 2(e)                                     |_|


   6     CITIZENSHIP OR PLACE OF ORGANIZATION

         United Kingdom
             
    NUMBER OF        7     SOLE VOTING POWER

     SHARES                7,884,491 shares
                     
  BENEFICIALLY       8     SHARED VOTING POWER

    OWNED BY               -0-
      EACH           
                     9     SOLE DISPOSITIVE POWER
    REPORTING
                           6,984,311 shares
     PERSON                
                     10    SHARED DISPOSITIVE POWER
      WITH
                           -0-

   11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         7,884,491 shares

   12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11)
         EXCLUDES CERTAIN SHARES*                                           |_|


   13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         9.0%

   14   TYPE OF REPORTING PERSON*

        CO

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
                     INCLUDE BOTH SIDES OF THE COVER PAGE,
                 RESPONSES TO ITEMS 1-7 (INCLUDING EXHIBITS) OF
                  THE SCHEDULE, AND THE SIGNATURE ATTESTATION.


<PAGE>
                                  SCHEDULE 13D


CUSIP No. 171605108                                         Page 15 of 29 Pages
                                                                ----  ------   

   1     NAME OF REPORTING PERSON
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

         Lion Investments Limited

   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*             (a)  |_|

                                                                       (b)  |X|

   3     SEC USE ONLY



   4     SOURCE OF FUNDS*

         WC

   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
         PURSUANT TO ITEMS 2(d) or 2(e)                                     |_|


   6     CITIZENSHIP OR PLACE OF ORGANIZATION

         United Kingdom 
             
    NUMBER OF        7     SOLE VOTING POWER

     SHARES                3,734,426 shares
                     
  BENEFICIALLY       8     SHARED VOTING POWER

    OWNED BY               -0-
      EACH           
                     9     SOLE DISPOSITIVE POWER
    REPORTING
                           3,308,366 shares
     PERSON          
                     10    SHARED DISPOSITIVE POWER
      WITH
                           -0-

   11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         3,734,426 shares

   12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11)
         EXCLUDES CERTAIN SHARES*                                           |_|


   13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         4.3%

   14   TYPE OF REPORTING PERSON*

        CO

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
                     INCLUDE BOTH SIDES OF THE COVER PAGE,
                 RESPONSES TO ITEMS 1-7 (INCLUDING EXHIBITS) OF
                  THE SCHEDULE, AND THE SIGNATURE ATTESTATION.


<PAGE>
                                  SCHEDULE 13D


CUSIP No. 171605108                                         Page 16 of 29 Pages
                                                                ----  ------   

   1     NAME OF REPORTING PERSON
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

         Charles M. Diker

   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*             (a)  |_|

                                                                       (b)  |X|

   3     SEC USE ONLY



   4     SOURCE OF FUNDS*

         PF

   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
         PURSUANT TO ITEMS 2(d) or 2(e)                                     |_|


   6     CITIZENSHIP OR PLACE OF ORGANIZATION

         United States
             
    NUMBER OF        7     SOLE VOTING POWER

     SHARES                1,659,922 shares
                     
  BENEFICIALLY       8     SHARED VOTING POWER

    OWNED BY               -0-
      EACH           
                     9     SOLE DISPOSITIVE POWER
    REPORTING
                           1,470,382 shares
     PERSON          
                     10    SHARED DISPOSITIVE POWER
      WITH
                           -0-

   11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         1,659,922 shares

   12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11)
         EXCLUDES CERTAIN SHARES*                                           |_|


   13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         1.9%

   14   TYPE OF REPORTING PERSON*

        IN

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
                     INCLUDE BOTH SIDES OF THE COVER PAGE,
                 RESPONSES TO ITEMS 1-7 (INCLUDING EXHIBITS) OF
                  THE SCHEDULE, AND THE SIGNATURE ATTESTATION.


<PAGE>
                                  SCHEDULE 13D


CUSIP No. 171605108                                         Page 17 of 29 Pages
                                                                ----  ------   
Item 1.   Security and Issuer.

          The title of the class of equity  securities  to which this  Statement
relates is the Common Stock,  $.01 par value per share (the "Common Stock"),  of
Chyron Corporation (the "Issuer"). The principal executive offices of the Issuer
are located at 5 Hub Drive, Melville, New York 11747.

Item 2.   Identity and Background.

          This  Statement is being filed on behalf of WPG Corporate  Development
Associates  IV, L.P., a Delaware  limited  partnership  ("CDA"),  WPG  Corporate
Development Associates,  IV (Overseas),  L.P., a Cayman Islands exempted limited
partnership  ("CDAO"),   WPG  Enterprise  Fund  II,  L.P.,  a  Delaware  limited
partnership  ("WPGEF"),  Weiss,  Peck & Greer Venture  Associates  III,  L.P., a
Delaware limited  partnership  ("WPGVA"),  WPG Private Equity Partners,  L.P., a
Delaware limited partnership ("WPGPEP"), WPG CDA IV (Overseas),  Ltd., a limited
company organized under the laws of the Cayman Islands ("Overseas"), WPG Private
Equity Partners  (Overseas),  L.P., a Delaware limited partnership  ("WPGPEPO"),
WPG Ventures  Partners  III,  L.P., a Delaware  limited  partnership  ("WPGVP"),
Steven N. Hutchinson ("Hutchinson"),  Wesley W. Lang, Jr. ("Lang"), Philip Greer
("Greer"), Gill Cogan ("Cogan"), Westpool Investment Trust plc, a public limited
company organized under the laws of England ("WIT"), Lion Investments Limited, a
private  limited  company  organized  under the laws of  England  ("Lion"),  and
Charles M. Diker ("Diker",  and together with CDA, CDAO, WPGEF,  WPGVA,  WPGPEP,
Overseas,  WPGPEPO,  WPGVP,  Hutchinson,  Lang, Greer,  Cogan, WIT and Lion, are
collectively referred to hereinafter as the "Reporting Persons" and individually
as a "Reporting  Person").  CDA,  CDAO,  WPGEF,  WPGVA,  WIT, Lion and Diker are
collectively referred to hereinafter as the "WP Group"

          Information with respect to each of the Reporting Persons is set forth
below.  Each of the Reporting  Persons is responsible for the  completeness  and
accuracy of the  information  concerning  such  Reporting  Person.  No Reporting
Person is responsible  for the  completeness  of or accuracy of the  information
concerning any of the other Reporting Persons.

<PAGE>
                                  SCHEDULE 13D


CUSIP No. 171605108                                         Page 18 of 29 Pages
                                                                ----  ------   
          CDA and CDAO.

          The principal  office of CDA and CDAO is located at c/o Weiss,  Peck &
Greer Private Equity Group, One New York Plaza, New York, NY 10004-1950. CDA and
CDAO are investment  partnerships  that are associated with Weiss, Peck & Greer,
L.L.C.  ("Weiss,  Peck").  The  general  partner of CDA is WPGPEP.  The  general
partners of CDAO are Overseas and WPGPEPO.

          WPGEF and WPGVA.

          The principal  office of WPGEF and WPGVA is located at 555  California
Street,  Suite 4760,  San  Francisco,  CA 94104.  WPGEF and WPGVA are investment
partnerships associated with Weiss, Peck. The general partner of WPGEF and WPGVA
is WPGVP.

          WPGPEP.

          The principal  office of WPGPEP is located at c/o Weiss,  Peck & Greer
Private Equity Group, One New York Plaza, New York, New York 10004-1950.  WPGPEP
serves as the  general  partner  of CDA.  The  general  partners  of WPGPEP  are
Hutchinson  (co-managing partner),  Lang (co-managing  partner),  Craig Whiting,
Peter Pfister,  Greer and Nora Kerppola,  all of whom are citizens of the United
States,  except  that Ms.  Kerppola is a citizen of  Finland,  and have  offices
located  at  One  New  York  Plaza,  New  York,  New  York  10004-1950.  Messrs.
Hutchinson,  Lang,  Pfister  and Greer  are  principals  of Weiss,  Peck and Mr.
Whiting and Ms. Kerppola are employees of Weiss, Peck.

          Overseas and WPGPEPO.

           The principal office of Overseas is located at c/o BankAmerica  Trust
and Banking  Corp.,  P.O.  Box 1092,  Georgetown,  Grand Cayman  Island,  Cayman
Islands,  British West Indies. The principal office of WPGPEPO is located at c/o
Weiss, Peck & Greer Private Equity Group, One New York Plaza, New York, New York
10004-1950.  Overseas  and WPGPEPO  serve as the general  partners of CDAO.  The
directors of Overseas are Messrs. Hutchinson,  Greer, Lang and Robin Jarvis. Mr.
Jarvis is a citizen of the United Kingdom,  an employee of BankAmerica Trust and
Banking  Corporation  (Cayman)  Limited and has offices  located at  BankAmerica
House, Fort Street,  Georgetown,  Grand Cayman Island,  Cayman Islands,  British
West Indies. The general partners of WPGPEPO are the same individuals that serve
as general partners of WPGPEP.

<PAGE>
                                  SCHEDULE 13D


CUSIP No. 171605108                                         Page 19 of 29 Pages
                                                                ----  ------   
          WPGVP.

          The  principal  office of WPGVP is located at 555  California  Street,
Suite 4750,  San  Francisco,  CA 94104.  WPGVP serves as the general  partner of
WPGEF and WPGVA. The general partners of WPGVP are Greer (co-managing  partner),
Cogan  (co-managing  partner),  Annette Bianchi,  Philip Black, Ellen Feeney,
Christopher  J. Schaepe and Barry  Schiffman.  Cogan,  Bianchi,  Black,  Feeney,
Schaepe and Schiffman are citizens of the United States and have offices located
at 555 California  Street,  Suite 4750, San Francisco,  CA 94104. Mr. Greer is a
senior  managing  principal  of Weiss,  Peck,  Cogan,  Bianchi  and  Feeney  are
principals  of Weiss,  Peck and Black,  Schaepe and  Schiffman  are employees of
Weiss, Peck.

          Hutchinson and Lang.

          As  described  above,  Messrs.  Hutchinson  and Lang  are  co-managing
partners of WPGEP and WPGEPO and directors of Overseas.

           Greer and Cogan.

          As described above,  Messrs.  Greer and Cogan are co-managing partners
of WPGVP. Mr. Greer is also a director of Overseas.

          WIT and Lion.

          The principal  office of WIT and Lion is located at Carlton House,  33
Robert  Adam  Street,  London  W1M  5AH.  WIT and Lion  are  investment  holding
companies.

          The  directors  and  executive  officers  of WIT and  Lion  and  their
respective  business  addresses and present principal  occupations are set forth
below:

<PAGE>
                                  SCHEDULE 13D


CUSIP No. 171605108                                         Page 20 of 29 Pages
                                                                ----  ------   
Directors           Address                       Occupation

Lord Rayne          33 Robert Adam Street         Director, WIT and Lion
                    London, UK  W1M 5AH

Robert Rayne        33 Robert Adam Street         Director, WIT and Lion
                    London, UK  W1M 5AH

Lord Remnant        33 Robert Adam Street         Chartered Accountant,
                    London, UK  W1M 5AH           WIT

Robert Spier        33 Robert Adam Street         Chartered Accountant,
                    London, UK  W1M 5AH           WIT and Lion

Michael Waldron     33 Robert Adam Street         Certified Accountant,
                    London, UK  W1M 5AH           WIT*
- ---------------
*  Mr. Waldron also serves as Secretary of WIT and Lion.


All of the above persons are citizens of the United Kingdom.

         Diker.

          Charles M. Diker is a  non-managing  principal  of Weiss,  Peck and is
engaged in investment  activities.  Mr. Diker has a business  address located at
One New York  Plaza,  New York,  NY  10004-1950.  Mr.  Diker is a citizen of the
United States.

          During the last five years,  none of the  Reporting  Persons  named in
this Item 2 has been  convicted in any criminal  proceeding  (excluding  traffic
violations or similar misdemeanors),  and none of the Reporting Persons named in
this  Item  2  has  been  a  party  to  a  civil  proceeding  of a  judicial  or
administrative  body of  competent  jurisdiction  resulting  in its or his being
subject to a judgment,  decree or final order enjoining future violations of, or
prohibiting  or mandating  activities  subject to,  federal or state  securities
laws, or finding any violations with respect to such laws.

Item 3.   Source and Amount of Funds or Other Consideration.

          All funds used to  purchase  the  securities  reported in Item 4 below
were provided from the working  capital of the WP Group,  except that Charles M.
Diker  contributed his

<PAGE>
                                  SCHEDULE 13D


CUSIP No. 171605108                                         Page 21 of 29 Pages
                                                                ----  ------   
own  personal  funds.  The  aggregate  purchase  price  of such  securities  was
approximately  $13,952,635.00,  excluding  the  Installment  Shares (as  defined
below)  attributable  to each of the  Reporting  Persons and  certain  shares of
Common Stock subject to a right of first refusal.

Item 4.   Purpose of Transaction.

          On  July  25,  1995,  the WP  Group  entered  into an  assignment  and
assumption  agreement (the  "Assignment  Agreement") with such other entities as
set forth in the Assignment Agreement (such entities, together with the WP Group
,  are  collectively   referred  to  hereinafter  as  the  "Assignees")  and  CC
Acquisition  Company A, L.L.C., a Delaware limited  liability  Company ("CCACA")
and CC  Acquisition  Company B, L.L.C.,  a Delaware  limited  liability  Company
("CCACB",  and together with CCACA, are collectively  referred to hereinafter as
the "Assignors").  Pursuant to the Assignment  Agreement,  (i) CCACA assigned to
the Assignees its rights under the stock purchase agreement,  dated May 26, 1995
(the "Pesa  Agreement"),  by and among CCACA,  CCACB and Pesa, Inc.  ("Pesa") to
acquire  20,000,000 shares of Common Stock from Pesa, (ii) CCACA assigned to the
Assignees its rights under the stock purchase agreement, dated May 26, 1995 (the
"Sepa Agreement"),  by and among CCACA, Sepa  Technologies,  Ltd., Co. ("Sepa"),
and John A. Servizio,  ("Servizio") to acquire  5,000,000 shares of Common Stock
from Sepa and Servizio, (iii) CCACA assigned to the WP Group its rights of first
refusal under the Sepa Agreement and the agreement, dated July 25, 1995, between
CCACA and Albert O.P. Leubert Ltd., a New York Corporation, to acquire 5,400,000
shares of Common  Stock (the  "Right of First  Refusal  Shares")  and (iv) CCACB
assigned  to the  Assignees  its  rights  under the Pesa  Agreement  to  acquire
17,648,839 shares of Common Stock from Pesa.

          The closing of the  transactions  contemplated  by the Pesa Agreement,
the Sepa Agreement and the Assignment  Agreement  occurred on July 25, 1995 (the
"Closing").  Immediately following the Closing (i) the Board of Directors of the
Issuer (the "Board") approved a resolution increasing the size of the Board from
seven members to nine members;  (ii) Adolfo Nunez Astray,  Alfred O.P.  Leubert,
Miguel S. Moraga and John A.  Servizio  resigned as  directors of the Issuer and
members of committees of the Board;  and (iii) Steven N.  Hutchinson,  Wesley W.
Lang, Eugene M. Weber, Alan J. Hirschfield,  and Sheldon D. Camhy were appointed
by

<PAGE>
                                  SCHEDULE 13D


CUSIP No. 171605108                                         Page 22 of 29 Pages
                                                                ----  ------   

the existing members of the Board as new directors.  Messrs. Hutchinson and Lang
are co-managing partners of WPGPEP and WPGPEPO and directors of Overseas.

          In connection with the Closing,  the Assignees  entered into an escrow
agreement  (the  "Escrow  Agreement")  with Sepa,  CCACA,  CCACB and First Union
National Bank of North Carolina, a national banking association ("First Union"),
as escrow  agent,  with  respect  to  29,414,732  shares of  Common  Stock  (the
"Installment  Shares"). The WP Group has the power to vote the following portion
of the Installment  Shares, all of which Shares are deposited in escrow: (i) CDA
- -  7,353,793  shares;  (ii) CDAO -  1,773,258  shares;  (iii)  WPGEF - 1,827,235
shares;  (iv)  WPGVA  -  1,519,350;  (v) WIT -  2,890,231  shares;  (vi)  Lion -
1,369,060 shares and (vii) Charles M. Diker - 608,470 shares. Under the terms of
the Assignment Agreement and the Sepa Agreement,  such shares are to be released
from escrow to the WP Group upon the making of certain  payments by the WP Group
to Sepa. If any of the Installment Shares are not paid for, such Shares shall be
forfeited.

          On July 25, 1995 the WP Group entered into a  stockholders'  agreement
(the  "Stockholders'  Agreement")  with CCACA and CCACB  pursuant  to which, the
parties agreed,  among other things,  (i) that the Board would be constituted to
have nine  members;  (ii) that until  such date as CCACA and CCACB  collectively
cease to  beneficially  own 8% of the  issued and  outstanding  shares of Common
Stock,  they shall have the right to  nominate  three  members to the Board (the
"CCAC Directors");  (iii) that until such date as the Reporting Persons cease to
beneficially own 8% of the issued and outstanding  shares of Common Stock,  CDA,
CDAO, WPGEF, and WPGVA  (collectively the "WPG  Participants") have the right to
nominate one member to the Board,  WIT and Lion  (collectively  "WIT\Lion") have
the right to  nominate  one member to the Board,  and the WPG  Participants  and
WIT/Lion shall together have the right to nominate one member to the Board; (iv)
that they would agree on who should  serve as the three other  directors  of the
Board; and (v) to vote or cause to be voted all of the shares of Common Stock of
which such party is the beneficial owner in favor of the actions contemplated by
(i),  (ii),  and (iii) above.  The  Reporting  Persons  disclaim any  beneficial
ownership of shares of Common Stock attributable to the Assignors.

<PAGE>
                                  SCHEDULE 13D


CUSIP No. 171605108                                         Page 23 of 29 Pages
                                                                ----  ------   


          In  connection  with  the  aforementioned,  transactions,  the  Issuer
entered into a Registration Agreement (the "Registration Rights Agreement") with
the Assignees, CCACA and CCACB, dated as of July 25, 1995, pursuant to which the
Assignees have, under certain  circumstances,  demand and incidental (piggyback)
registration rights with respect to 64,414,732 shares of Common Stock.

          Copies  of  the  Assignment  Agreement,  the  Shareholders  Agreement,
Registration Rights Agreement, and the Escrow Agreement are filed herewith under
Item 7 as Exhibits C, D, E, and F respectively,  and are deemed  incorporated in
their entirety by reference hereto.

          The  securities  purchased by the WP Group were  purchased  solely for
investment  purposes.  Each Reporting  Person expects that it will, from time to
time, review its investment  position in the Issuer and may, depending on market
and other conditions, increase or decrease such investment position.

          Each  Reporting  Person  does  not have any  plans or  proposals  with
respect to any extraordinary  corporate  transaction involving the Issuer or any
sale of its  assets or any  change  in the  Board,  management,  capitalization,
dividend  policy,  charter or by-laws,  or any other  change in its  business or
corporate structure or with respect to the delisting or deregistration of any of
its securities including,  without limitation, those matters described in Item 6
of Schedule 13D.

<PAGE>
                                  SCHEDULE 13D


CUSIP No. 171605108                                         Page 24 of 29 Pages
                                                                ----  ------   


Item 5.   Interest in Securities of the Issuer.

(a) and (b)

                              Beneficial Ownership
<TABLE>
<S>         <C>          <C>            <C>        <C>            <C>
                                        Shared
                                        Voting     Sole           Shared
            Percentage   Sole Voting    Power      Dispositive    Dispositive
Entity      of Class*    Power (shares) (shares)   Power (shares) Power (shares)

CDA         22.9%        20,060,755      -         17,770,615      -
CDAO         5.5%         4,837,540      -          4,285,120      -
WPGEF        5.7%         4,984,717      -          4,415,557      -
WPGVA        4.7%         4,144,585      -          3,671,545      -
WPGPEP      22.9%        20,060,755      -         17,770,615      -
Overseas     5.5%         -             4,837,540   -             4,285,120
WPGPEPO      5.5%         -             4,837,540   -             4,285,120
WPGVP       10.4%         9,129,302      -          8,087,102      -
Hutchinson  28.4%         -            24,898,295   -            22,055,735
Lang        28.4%         -            24,898,295   -            22,055,735
Greer       15.9%         -            13,966,842   -            12,372,222
Cogan       10.4%         -             9,129,302   -             8,087,102
Westpool     9.0%         7,884,491      -          6,984,311      -
Lion         4.3%         3,734,426      -          3,308,366      -
Diker        1.9%         1,659,922      -          1,470,382      -

</TABLE>

*    The  Issuer's  Form  10-Q for the  fiscal  quarter  ended  March  31,  1995
     indicated  that   87,460,479   shares  of  Common  Stock  were  issued  and
     outstanding as of that date.


           Messrs. Hutchinson,  Lang and Greer disclaim, pursuant to Rule 13d-4,
beneficial  ownership  of the shares of Common  Stock  which may be deemed to be
beneficially owned by CDAO, Overseas and WPGPEPO,  except to the extent of their
respective  interests  in Overseas  and  WPGPEPO.  Messrs.  Hutchinson  and Lang
disclaim,  pursuant to Rule 13d-4,  beneficial ownership of the shares of Common
Stock which may be deemed to be beneficially  owned by CDA, except to the extent
of their respective interests in WPGPEP. WPGPEP, Overseas and WPGPEPO, disclaim,
pursuant to Rule 13d-4 beneficial  ownership of the shares of Common Stock which
may be deemed to be  beneficially  owned by CDA,  CDAO,  except to the extent of
their respective interests in CDA and CDAO.

          Messrs. Greer and Cogan disclaim,  pursuant to Rule 13d-4,  beneficial
ownership of the shares of Common  Stock which may be deemed to be  beneficially
owned by WPGEF and WPGVA, except to the extent of their respective  interests in
WPGVP.  WPGVP  disclaims,  pursuant to Rule 13d-4,  beneficial  ownership of the
shares of Common  Stock which may be deemed to be  beneficially  owned by WPGPEF

<PAGE>
                                  SCHEDULE 13D


CUSIP No. 171605108                                         Page 25 of 29 Pages
                                                                ----  ------   


and WPGVA, except to the extent of its interests in WPGPEF and WPGVA.

          This Statement is not being filed with respect to any shares of Common
Stock owned by any other general partner of WPGPEP, Overseas,  WPGPEPO or WPGVP,
other than  Messrs.  Hutchinson,  Lang,  Cogan and Greer,  because  none of such
general partners  possess or shares voting or dispositive  power with respect to
any of the shares of Common Stock that may be deemed to be beneficially owned by
WPGPEP,  Overseas,  WPGPEPO or WPGVP.  Each of such general partners  disclaims,
pursuant  to Rule  13d-4,  that he or she is the  beneficial  owner,  within the
meaning  of Rule  13d-3,  of the  shares of Common  Stock  owned by the  various
parties referred to in this Statement, other than such shares of Common Stock as
such general partner owns of record, or may be deemed to own by reason of his or
her interest as a partner in the various partnerships  described herein. Each of
the  entities  described  herein as owning  shares  of Common  Stock  disclaims,
pursuant  to Rule  13d-4,  beneficial  ownership  of such shares as are owned by
other entities described herein.

          (c)  Except  as set  forth in Item 4  above,  no  transactions  in the
Issuer's  securities by any of the Reporting  Persons have been effected  during
the past sixty (60) days.

          (d) Except with  respect to the Right of Refusal  Shares,  none of the
Reporting  Persons  know of any person who has the right to receive or the power
to direct the receipt of dividends  from,  or the proceeds from the sale of, the
shares of Common Stock set forth above.

          (e) Not applicable.


Item 6.  Contracts,  Arrangements,  Understandings  or  Relationships  with
         Respect to Securities of the Issuer.

          Except as set forth in this Statement,  none of the Reporting  Persons
has any express  contracts,  arrangements,  understandings or relationships with
any of the other persons or entities named in Item 2, any other persons,  or the
Issuer with respect to the securities of the Issuer.

<PAGE>
                                  SCHEDULE 13D


CUSIP No. 171605108                                         Page 26 of 29 Pages
                                                                ----  ------   



Item 7.  Material to be filed as Exhibits.

Exhibit A      Stock  Purchase  Agreement,  dated as of May 26,  1995,  by and
               among CCACA, CCACB and Pesa, is incorporated  herein by reference
               to  Exhibit  A of  Schedule  13D  filed on June 1, 1995 by CCACA,
               CCACB, Allan R. Tessler and Michael Wellesley-Wesley.

Exhibit B      Stock  Purchase  Agreement,  dated as of May 26,  1995,  by and
               among  CCACA,  Sepa  and  Servizio,  is  incorporated  herein  by
               reference  to Exhibit B of Schedule  13D filed on June 1, 1995 by
               CCACA, CCACB, Allan R. Tessler and Michael Wellesley-Wesley.

Exhibit C      Assignment and Assumption Agreement, dated as of July 25, 1995,
               by and among the Assignees, CCACA and CCACB.

Exhibit D      Stockholders' Agreement, dated as of July 25, 1995, by and among
               the Reporting Persons, CCACA and CCACB.

Exhibit E      Registration  Rights  Agreement,  dated as of July 25, 1995, by
               and among the Issuer, the Assignees, CCACA and CCACB.

Exhibit F      Escrow Agreement, dated as of July 25, 1995, by and among Pesa,
               the Assignees, CCACB and National Union.

Exhibit G      Rule 13d-1(f) Agreement by and among the Reporting Persons.


<PAGE>
                                  SCHEDULE 13D


CUSIP No. 171605108                                         Page 27 of 29 Pages
                                                                ----  ------   


                                   SIGNATURES

          After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information  set forth in this statement is true,  complete and
correct.

                                                Date: August 4, 1995




                                        WPG CORPORATE DEVELOPMENT
                                          ASSOCIATES IV, L.P.


                                            By: WPG PRIVATE EQUITY PARTNERS,
                                                L.P., its general partner


                                                By:  /s/Wesley W. Lang, Jr.  
                                                      Name: Wesley W. Lang, Jr.
                                                      Title:  General Partner


                                        WPG CORPORATE DEVELOPMENT ASSOCIATES
                                          IV (OVERSEAS), L.P.


                                            By: WPG CDA IV (OVERSEAS), LTD.,
                                                its general partner


                                                By:  /s/Wesley W. Lang, Jr.  
                                                     Name: Wesley W. Lang, Jr.
                                                     Title:  Director

<PAGE>
                                  SCHEDULE 13D


CUSIP No. 171605108                                         Page 28 of 29 Pages
                                                                ----  ------   


                                        WPG ENTERPRISE FUND II, L.P.


                                            By: WPG VENTURE PARTNERS III,
                                                L.P., its general partner


                                                By:  /s/ Philip Greer         
                                                     Name:  Philip Greer
                                                     Title:  General Partner


                                        WEISS, PECK & GREER VENTURE
                                          ASSOCIATES III, L.P.


                                            By: WPG VENTURE PARTNERS III,
                                                L.P., its general partner


                                                By:  /s/ Philip Greer         
                                                     Name:  Philip Greer
                                                     Title:  General Partner


                                        WESTPOOL INVESTMENT TRUST PLC


                                                By:  /s/ R.F.J. Spier         
                                                     Name:  R.F.J. Spier
                                                     Title:  Director


                                        LION INVESTMENTS LIMITED


                                                By:  /s/ R.F.J. Spier         
                                                     Name:  R.F.J. Spier
                                                     Title:  Director


                                                     /s/ Charles M. Diker 
                                                     CHARLES M. DIKER


<PAGE>
                                  SCHEDULE 13D


CUSIP No. 171605108                                         Page 29 of 29 Pages
                                                                ----  ------   

                                        WPG PRIVATE EQUITY PARTNERS, L.P.


                                                By:  /s/Wesley W. Lang, Jr.  
                                                     Name: Wesley W. Lang, Jr.
                                                     Title:  General Partner


                                        WPG CDA IV (OVERSEAS), L.P.


                                                By:  /s/Wesley W. Lang, Jr.  
                                                     Name: Wesley W. Lang, Jr.
                                                     Title:  Director


                                    WPG PRIVATE EQUITY PARTNERS (OVERSEAS), L.P.


                                                By:  /s/Wesley W. Lang, Jr.  
                                                     Name: Wesley W. Lang, Jr.
                                                     Title:  Director


                                        WPG VENTURE PARTNERS III, L.P.


                                                By:  /s/ Philip Greer         
                                                     Name:  Philip Greer
                                                     Title:  General Partner


                                                     /s/ Steven N. Hutchinson 
                                                     STEVEN N. HUTCHINSON


                                                     /s/Wesley W. Lang, Jr. 
                                                     WESLEY W. LANG, JR.


                                                     /s/ Philip Greer         
                                                     PHILIP GREER


                                                     /s/ Gill Cogan           
                                                     GILL COGAN






 

                                                                       Exhibit C

                     ASSIGNMENT AND ASSUMPTION AGREEMENT

                  THIS ASSIGNMENT AND ASSUMPTION  AGREEMENT (the "Agreement") is
being made this 25 day of July,  1995,  by and among CC  Acquisition  Company A,
L.L.C.,  a Delaware  limited  liability  company,  its  successors  and  assigns
("Acquisition  Company A"), CC Acquisition Company B, L.L.C., a Delaware limited
liability company, its successors and assigns ("Acquisition Company B"), and the
persons  set  forth on  Exhibit  A-1  hereto  (including  each of such  person's
successors and assigns),  each of whom are hereinafter  referred to individually
as an "Assignee" and  collectively as the  "Assignees."  The Assignees listed on
Part I of Exhibit A-1 hereto are  hereinafter  referred to individually as a "WP
Group  Assignee"  and  collectively  as the "WP  Group  Assignees".  Acquisition
Company A and Acquisition Company B are hereinafter  referred to collectively as
the "Assignors."
                             W I T N E S S E T H :

                   WHEREAS,  the  Assignors  are  parties  to a  Stock  Purchase
Agreement,  dated as of May 26,  1995 (the "Pesa  Agreement"),  by and among the
Assignors and Pesa,  Inc., a Delaware  corporation  ("Pesa"),  pursuant to which
Acquisition  Company A has,  among other things,  agreed to purchase  30,000,000
shares (the "Initial Pesa Shares") of the common stock, par value $.01 per share
(the  "Common  Stock"),  of  Chyron  Corporation,  a New York  corporation  (the
"Company"),  and  Acquisition  Company B has  agreed,  among  other  things,  to
purchase  29,414,732  shares (the "Installment Pesa Shares") of the Common Stock
of the Company upon the terms and as set forth in the Pesa Agreement; and

                   WHEREAS, Acquisition Company A is a party to a Stock Purchase
Agreement,  dated  as of May 26,  1995  (the  "Sepa  Agreement"),  by and  among
Acquisition  Company A, Sepa Technologies Ltd., Co., a Georgia limited liability
company  ("Sepa"),  and  John  A.  Servizio  ("Servizio"),   pursuant  to  which
Acquisition  Company A has, among other things, (i) agreed to purchase 5,000,000
shares (the "Sepa  Shares") of the Common  Stock of the Company and (ii) a right
of first refusal with respect to 8,700,000 shares of the Common Stock of
the Company, upon the terms and as set forth in the Sepa Agreement; and
                  
                   WHEREAS,  Acquisition  Company A is a party to an  agreement,
dated as of July 25, 1995 (the "Leubert Agreement"), between Acquisition Company
A and Alfred O.P. Leubert  ("Leubert"),  pursuant to which Acquisition Company A
has a right of first refusal with respect to 300,000  shares of the Common Stock
of the Company, upon the terms and as set forth in the Leubert Agreement.

                   WHEREAS,  the  Assignees  desire to  acquire  certain  of the
Assignors rights and assume certain of the Assignors' obligations under the Sepa
Agreement and the Pesa  Agreement  and the  Assignors  desire to transfer to the
Assignees certain of the Assignors' rights and to have the Assignees assume
certain of the  Assignors'  obligations  under the Pesa  Agreement  and the Sepa
Agreement, subject to the terms and conditions set forth below.

                  NOW,   THEREFORE,    in   consideration   of   the   premises,
representations, warranties, and covenants contained herein, and intending to be
legally bound hereby, the parties hereto agree as follows:

I.   DEFINITIONS.

          Capitalized terms used but not otherwise defined herein shall have the
meaning  ascribed  thereto in the Pesa  Agreement  or the Sepa  Agreement as the
Leubert Agreement, as the context so indicates.


II.  TRANSFER AND ASSIGNMENT.

          Section 2.1  Terms of Purchase and Transfer of Assignment.

          (a) Acquisition  Company A hereby grants,  conveys and assigns to the
Assignees,  in the amount set forth opposite each Assignee's name in Column 3 of
Exhibit A-2 hereto,  its right  under the Pesa  Agreement  to acquire 20 million
shares of the Common Stock of the Company  (which  shares are referred to in the
Pesa  Agreement as the Second Tranche of Shares and the Third Tranche of Shares)
and each such Assignee  hereby agrees to assume his or its  obligation to pay as
consideration for such shares the amount set forth opposite such Assignee's name
in Column 4 of Exhibit A-2 hereto,  which  aggregates to Ten Million Six Hundred
Thousand  Dollars  ($10,600,000)  U.S.,  in  accordance  with the  terms of this
Agreement and the provisions, to the extent applicable, set forth in Section 1.1
of the Pesa  Agreement.  Acquisition  Company A shall cause Pesa to instruct the
Escrow Agent to deliver to each of the Assignees stock certificates representing
the number of shares of Common Stock set forth opposite such  Assignee's name in
Column 3 of Exhibit A-2 hereto,  duly endorsed or accompanied  with stock powers
duly endorsed for transfer to the  Assignees.  Such 20 million  shares of Common
Stock  shall be  delivered  free and  clear of all  liens,  security  interests,
pledges, charges, claims of creditors,  encumbrances,  stockholders' agreements,
voting  trusts,  and  adverse  claims  of any  kind or  nature  whatsoever.  The
Assignees  shall  each  deliver  the  dollar  amount  set  forth  opposite  each
Assignee's name in Column 4 of Exhibit A-2 hereto, to Pesa by certified check or
wire transfer in immediately  available funds to an account in the United States
designated by Pesa.  Assignors  shall, in accordance  with the Escrow  Agreement
dated as of May 26, 1995 by and among Pesa,  Acquisition Company A and the First
Union National Bank of North Carolina, as Escrow Agent (the "Escrow Agreement"),
provide  the  Escrow   Agent  with  an   affidavit   signed  by  both  the  Pesa
Representative  and the CCACA  Representative  (each as  defined  in the  Escrow
Agreement)  advising the Escrow Agent to  distribute  such 20 million  shares of
Common  Stock to the  Assignees  in the amounts set forth in Column 3 of Exhibit
A-2 hereto.

           (b) Acquisition  Company A hereby grants,  conveys and assigns to the
Assignees,  in the amount set forth opposite each Assignee's name in Column 5 of
Exhibit A-2 hereto, its right to acquire 5 million shares of the Common Stock of
the Company and each such Assignee agrees to assume his or its obligation to pay
as  consideration  for such shares the amount set forth opposite such Assignee's
name in Column 6 of Exhibit  A-2  hereto,  which  aggregates  to Two Million Six
Hundred Thousand Dollars ($2,600,000) U.S., in accordance with the terms of this
Agreement and provisions, to the extent applicable,  set forth in Section 1.1 of
the Sepa  Agreement.  Acquisition  Company A shall  cause Pesa to deliver to the
Assignees stock certificates  representing such 5 million shares of Common Stock
in the amounts set forth opposite such  Assignee's name in Column 5 of Exhibit A
hereto,  duly  endorsed  or  accompanied  with stock  powers duly  endorsed  for
transfer  to the  Assignees.  Such 5 million  shares of  Common  Stock  shall be
delivered free and clear of all liens,  security  interests,  pledges,  charges,
claims of creditors, encumbrances,  stockholders' agreements, voting trusts, and
adverse  claims of any kind or  nature  whatsoever.  The  Assignees  shall  each
deliver the dollar amount set forth opposite each Assignee's name in Column 6 of
Exhibit A-2 hereto to Sepa by certified  check or wire  transfer in  immediately
available funds to an account in the United States designated by Sepa.

           (c) Acquisition  Company A hereby grants,  conveys and assigns to the
WP Group Assignees the right to participate in Acquisition  Company A's exercise
of its right of first refusal  contained in Section 1.1(b) of the Sepa Agreement
and in the Leubert Agreement as provided in this Section 2.1(c).  Each time Sepa
or Leubert delivers a Sale Notice,  Acquisition Company A shall immediately (and
in any event no later than two days  after  receipt  thereof)  deliver a copy of
such  Sale  Notice  to  WPG  Corporate  Development   Associates  IV,  L.P.,  as
representative  of the WP Group  Assignees (the  "Representative").  Acquisition
Company A shall notify the Representative in writing within five (5) days of the
receipt of such Sale Notice  whether it intends to  exercise  its right of first
refusal  with  respect  to the  Offered  Shares  and  the  Representative  shall
immediately  (and in any event no later  than two days  after  receipt  thereof)
deliver to the Assignees a copy of such notice delivered by Acquisition  Company
A to the  Representative  together  with a copy of the  Sale  Notice  previously
delivered  to the  Representative.  If  Acquisition  Company  A shall  desire to
exercise its right of first refusal,  each of the WP Group  Assignees shall have
the irrevocable and exclusive option,  but not the obligation,  to purchase from
Sepa or Leubert, as the case may be sixty percent (60%) of the Offered Shares at
the  price  and upon the  terms and  conditions  equal to those  offered  by the
prospective  purchaser  in the  proportions  set  forth  opposite  such WP Group
Assignee's  name in Column 10 of Exhibit A-2 hereto.  If  Acquisition  Company A
shall not desire to exercise its right of first refusal,  the WP Group Assignees
shall have the irrevocable  and exclusive  option,  but not the  obligation,  to
purchase  all of the  Offered  Shares  at the  price  and  upon  the  terms  and
conditions  equal  to  those  offered  by  the  prospective   purchaser  in  the
proportions  set forth  opposite such WP Group  Assignee's  name in Column 10 of
Exhibit  A-2  hereto.  Within ten (10) days of receipt of the  notices  from the
Representative each WP Group Assignee shall notify the Representative in writing
whether it intends to exercise  its right of first  refusal  with respect to its
portion of the Offered Shares  (including,  if  applicable,  that portion of the
Offered Shares that Acquisition  Company A has stated it will not purchase).  To
the extent any of the WP Group  Assignees  do not notify the  Representative  or
states  that such WP Group  Assignee  does not desire to  exercise  its right of
first refusal (the  "Non-Participating  Assignees"),  each of the other WP Group
Assignees  shall  have  the  irrevocable  and  exclusive  option,  but  not  the
obligation,  to  purchase  the  shares  that could  have been  purchased  by the
Non-Participating Assignees in an amount equal to the product of (i) the Offered
Shares such Assignee has a right to purchase  divided by (ii) all of the Offered
Shares, multiplied by the shares that the Non-Participating Assignees could have
purchased. The Representative shall notify Acquisition Company A and Pesa of the
number of shares of Common  Stock  each  participating  WP Group  Assignee  will
purchase no later than twenty-five (25) days after the Representative's  receipt
of the  Sale  Notice.  The  Representative  will  coordinate  with  the WP Group
Assignees regarding each WP Group Assignee's rights with respect to the right of
first refusal.

           (d) Acquisition  Company B hereby grants,  conveys and assigns to the
Assignees,  its right to acquire the number of shares of Common  Stock set forth
opposite such Assignee's name in Column 7 of Exhibit A-2 hereto, which aggregate
to  17,648,839  shares of the Common  Stock of the Company  (representing  sixty
percent (60%) of 29,414,732  shares of the Common Stock of the Company) and each
such  Assignee  hereby  agrees  to  assume  his  or  its  obligation  to  pay as
consideration  for such shares,  the amount set forth  opposite each  Assignee's
name in Column 8 of  Exhibit  A-2  hereto,  which  aggregates  to  $8,471,442.83
(representing  sixty percent (60%) of  $14,119,071.36),  in accordance  with the
terms and provisions set forth in Section 1.1(c) of the Pesa Agreement.

         (i)  At the Closing,  the Assignors shall cause Pesa to deliver to each
              Assignee stock certificates representing the number of Installment
              Pesa Shares set forth opposite each Assignee's name in Column 7 of
              Exhibit A-2 hereto,  duly endorsed or  accompanied by stock powers
              duly endorsed for transfer to each such Assignee. Such Installment
              Pesa Shares shall be delivered to the Assignees  free and clear of
              all  liens,  security  interests,   pledges,  charges,  claims  of
              creditors, encumbrances,  stockholders' agreements, voting trusts,
              and adverse claims, of any kind or nature whatsoever.

       (ii)   Each of the  Assignees  shall make  payment for its portion of the
              Installment  Pesa  Shares in the  amount set forth  opposite  each
              Assignee's  name in Column 8 of Exhibit A-2 hereto,  by  certified
              check or wire transfer,  in  immediately  available  funds,  to an
              account in the United  States  designated  by Pesa,  in accordance
              with the  schedule  set forth in  Section  1.1(c)(ii)  of the Pesa
              Agreement.

       (iii)  As  security  for the  payment  obligation  for the portion of the
              Installment Pesa Shares purchased by each Assignee,  each Assignee
              shall pledge its Installment  Pesa Shares to Pesa and deliver such
              Installment  Pesa  Shares to the Escrow  Agent,  duly  endorsed in
              blank or  accompanied  with stock powers duly endorsed in blank by
              such  persons  to be held as  collateral;  such  Installment  Pesa
              Shares shall be  delivered  to the Escrow  Agent by each  Assignee
              free and clear of all liens, security interests, pledges, charges,
              claims  of  creditors,  encumbrances,   stockholders'  agreements,
              voting   trusts,   and  adverse  claims  of  any  kind  or  nature
              whatsoever,  except  for any  claims or liens  resulting  from the
              terms and  provisions of the Pesa  Agreement and the  shareholders
              agreement,  dated  as of  July  25,  1995  among  certain  of  the
              Assignees and the Assignors (the "Sharehold-ers Agreement").

         (iv) If Acquisition Company B fails to make its pro rata portion of any
              monthly payment when due as provided in Section 1.1(c) of the Pesa
              Agreement  or any of the  Assignees  fails  to  make  its  monthly
              payment  when  due as  provided  in  section  1.1(c)  of the  Pesa
              Agreement,  the WP Group  Assignees  shall  have the right to cure
              such  payment  default  within  twenty (20) days after  receipt of
              written  notice  thereof from Pesa.  Upon receipt from Pesa by the
              Representative  of a  written  notice  of  a  payment  default  by
              Acquisition  Company B or any of the Assignees  "The Cure Notice")
              the  Representative  shall  immediately (and in any event no later
              than two days after the  receipt  thereof)  deliver a copy of such
              notice to the WP Group Assignees. Within ten (10) days of the date
              the  Representative  receives  the  Cure  Notice,  each  WP  Group
              Assignee  shall notify the  Representative  in writing  whether it
              intends to participate, with respect to its portion in the cure of
              any monthly payment that Acquisition  Company B, or any of the non
              WP Group  Assignees  has failed to make and to  receive  shares of
              Common  Stock out of escrow in respect of the amount so paid. A WP
              Group  Assignee  who has  failed to make its  monthly  installment
              shall not be eligible to participate in a cure. Each participating
              WP Group  Assignee shall have the right to cure in an amount equal
              to the product of (i) the monthly  installment  most recently paid
              by such WP Group  Assignee  dived by (ii)  the  total  installment
              payment  due for such  month  (excluding  amounts  paid or owed by
              Acquisition  Company  B and  any of the non WP  Group  Assignees),
              multiplied  by the dollar amount to be cured.  The  Representative
              shall notify  Acquisition  Company B and Pesa of the dollar amount
              each participating WP Group Assignee will pay in respect of a cure
              no later than twenty (20) days after the Representative's  receipt
              of the Cure Notice.  Acquisition Company B shall have the right to
              cure any payment default not cured by the WP Group Assignees.  The
              Representative   will  coordinate  with  the  WP  Group  Assignees
              regarding such  Assignee's  right to cure. In either such case the
              party  which  cures such  payment  default  shall be  entitled  to
              receive out of escrow the portion of such  Installment Pesa Shares
              covered  by such  payment  free and clear of all  liens,  security
              interests,  stockholders'  agreement,  voting  trusts and  adverse
              claims  of  any  kind  or  notice   whatsoever,   except  for  the
              Shareholders Agreement.

          Section 2.2 Additional Consideration

             (a) As additional  consideration  for the assignments  described in
Section 2.1 hereto the  Assignees  shall pay the amount set forth in Column 9 of
Exhibit A-2 hereto,  which amount aggregates to One Million ($1,000,000) U.S. in
immediately available funds in accordance with the instructions delivered to the
Assignees by the Assignors.

          Section 2.3 Closing.  

              The Closing (the  "Closing") of the  transactions  contemplated by
this Agreement shall take place at the offices of Camhy Karlinsky & Stein LLP at
1740 Broadway,  New York, New York 10019 at 10:00 a.m., New York City time on or
before  July 26,  1995 or such other time or date as the  parties  may  mutually
agree (the "Closing Date"), but in no event later than September 30, 1995.

III. REPRESENTATIONS AND WARRANTIES OF SELLER.

          The Assignors each severally represent and warrant to the Assignees as
follows:

           Section  3.1   Litigation   and  Claims.

           There is no litigation,  arbitration,  claim,  governmental  or other
proceeding (formal or informal),  or investigation  pending, (to each Assignor's
knowledge)  threatened,  or (to each Assignor's knowledge) in prospect therefor,
that would prohibit the transactions contemplated pursuant to this Agreement.

          Section 3.2 Organization.

           Each of the Assignors is a limited  liability company duly organized,
validly existing, and in good standing under the laws of Delaware.

          Section 3.3  Authority  to  Transfer.

           Each of the  Assignors  has all  requisite  power  and  authority  to
execute,  deliver,  and perform this Agreement and the instruments and documents
contemplated  hereby. All necessary  proceedings of each Assignor have been duly
taken to authorize the execution,  delivery,  and  performance of this Agreement
and the instruments and documents  contemplated  hereby. This Agreement has been
duly authorized,  executed, and delivered by each Assignor, is the legal, valid,
and binding obligation of each Assignor,  and is enforceable as to each Assignor
in accordance with its terms.

           Section  3.4  Restrictions.  

           Neither of the  Assignors  is under any  contractual  restriction  or
obligation  that is  inconsistent  with the  execution and  performance  of this
Agreement. No consent, authorization,  approval, order, license, certificate, or
permit of or from, or declaration  or filing with,  any foreign,  United States,
state, local, or other governmental  authority or any court or other tribunal is
required by either of the  Assignors  or any of its  affiliated  or  controlling
entities for the  execution,  delivery,  or performance of this Agreement by the
Assignors.

IV.  REPRESENTATIONS AND WARRANTIES OF THE ASSIGNEE. 

          The Assignees  individually  represent and warrant to the Assignors as
follows:

          Section 4.1 Organization. 

           Each of the Assignees which is not a natural person is an entity duly
organized,  validly  existing,  and in  good  standing  under  the  laws  of its
jurisdiction of organization.

          Section 4.2  Authority to Buy. 

           Each of the  Assignees  has the  requisite  power  and  authority  to
execute,  deliver,  and perform this Agreement and the instruments and documents
contemplated  hereby. All necessary  proceedings of each Assignee have been duly
taken to authorize the execution,  delivery,  and  performance of this Agreement
and the instruments and documents  contemplated  hereby. This Agreement has been
duly authorized,  executed, and delivered by each Assignee, is the legal, valid,
and binding obligation of each Assignee,  and is enforceable as to each Assignee
in accordance with its terms.

          Section 4.3 Litigation and Claims.

           There is no litigation,  arbitration,  claim,  governmental  or other
proceeding (formal or informal),  or investigation  pending, (to each Assignee's
knowledge)  threatened,  or (to each Assignee's knowledge) in prospect therefor,
that would prohibit the transactions contemplated pursuant to this Agreement.

          Section  4.4  Restrictions.   

           None  of the  Assignees  is  under  any  contractual  restriction  or
obligation that is materially inconsistent with the execution and performance of
this  Agreement.   No  consent,   authorization,   approval,   order,   license,
certificate,  or permit of or from, or  declaration or filing with, any foreign,
United States,  state,  local, or other  governmental  authority or any court or
other  tribunal  is  required  by any  of the  Assignees  or  any  affiliate  or
controlling entities thereof for the execution, delivery, or performance of this
Agreement by any of the Assignees.

          Section  4.5  Purchases  for  Investment  Purposes. 

           Each Assignee is acquiring the Initial Pesa Shares,  the  Installment
Pesa  Shares,  and the Sepa  Shares  (collectively,  the  "Shares")  for its own
account  for  investment  purposes  only  and  with no  intention  of  offering,
distributing,  or reselling  the Shares or any part  thereof in any  transaction
that would be in  violation  of any Federal or State  securities  laws,  without
prejudice,  however,  to any right of a Assignee to sell or otherwise dispose of
all or any part of the Shares under a  registration  under the Securities Act of
1933, as amended (the  "Securities  Act"), and other applicable State securities
laws or under an exemption from such registration available under the Securities
Act and other  applicable  State securities laws. Each Assignee has not taken or
caused to be taken,  and shall not take or cause to be taken,  any  action  that
would cause the Assignees, the Assignors, the Company or any of their respective
affiliates  to be deemed an  underwriter,  as defined  in  Section  2(11) of the
Securities Act.

          Section 4.6 Sophisticated Investor.

           (a)  Each  Assignee  is a  sophisticated  investor  as  such  term is
contemplated  under  the  Securities  Act of 1933,  as  amended.  Each  Assignee
recognizes  that the Company  emerged from  bankruptcy  on December 27, 1991 and
that the purchase of the Shares involves  significant  risks. Each Assignee also
recognizes  that none of the  proceeds  from the  purchase  of the Shares  shall
accrue to the benefit of the Company, but shall instead accrue to the benefit of
Pesa and Sepa, as the case may be.

          (b) No Assignee is relying upon  Assignor,  Pesa or Sepa,  as the case
may  be,  the  Company  or  any of  their  respective  Affiliates,  accountants,
attorneys  or  financial  advisors  for  advice  with  respect  to  whether  the
Assignee's  acquisition  of the Shares  constitutes a legal  investment  for the
Assignees  or  with  respect  to the tax or  other  legal  consequences  of such
purchase.

          Section 4.7 Restricted Securities.

          (a) Each  Assignee  understands  and  agrees  that (i) the sale of the
Shares has not been registered  under the Securities Act or any State securities
laws; and (ii) each Assignee shall not offer or sell the Shares except  pursuant
to  registration  under  the  Securities  Act  or an  available  exemption  from
registration  under  the  Securities  Act.

          (b) Each Assignee agrees to the imprinting, so long as appropriate, of
any  certificates   representing  the  Shares  with  a  conspicuous   legend  in
substantially the following form:

        THE SECURITIES  REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED
        UNDER  THE  SECURITIES  ACT OF 1933  (THE  "ACT")  OR  UNDER  ANY  STATE
        SECURITIES  LAWS.  THESE  SECURITIES  SHALL  NOT BE  SOLD  OR  OTHERWISE
        TRANSFERRED  IN THE  ABSENCE  OF EITHER  (1) AN  EFFECTIVE  REGISTRATION
        STATEMENT UNDER THE ACT AND ANY APPLICABLE STATE SECURITIES LAWS, OR (2)
        AN  OPINION  OF  COUNSEL,  AS MAY BE REASON-  ABLY  SATISFACTORY  TO THE
        COMPANY,  THAT THE PROPOSED  SALE OR TRANSFER IS IN  ACCORDANCE  WITH AN
        AVAILABLE  EXEMPTION FROM THE  REGISTRATION  REQUIREMENTS OF THE ACT AND
        ANY APPLICABLE STATE SECURITIES LAWS.

V.  MISCELLANEOUS.

          Section 5.1  Brokerage  Fees.  

           If any person  shall  assert a claim to a fee,  commission,  or other
compensation  on  account  of  alleged  employment  as a broker  or  finder,  in
connection with or as a result of any of the  transactions  contemplated by this
Agreement,  the party purportedly engaging such broker or finder shall indemnify
and hold  harmless the other  parties  against any and all Claims (as defined in
Section 8.1 of the Pesa Agreement), as and when incurred,  arising out of, based
upon, or in connection with such Claim by such person, except to the extent that
it is determined in any suit,  action, or proceeding that such other parties had
engaged such broker or finder.

          Section 5.2 Further  Actions.  

           At any time and from time to time, each party agrees, as its expense,
to take such actions and to execute and deliver such documents or instruments as
may be reasonably necessary to effectuate the purposes of this Agreement.

          Section 5.3  Submission to  Jurisdiction.  

           Each of the parties hereto irrevocably submits to the jurisdiction of
the  courts of the State of New York and of any  Federal  court  located  in the
State of New York in connection with any action or proceeding  arising out of or
relating to this Agreement or of any document or instrument  delivered  pursuant
to, in connection with, or simultaneously with this Agreement.

          Section 5.4 Merger;  Modification.  

           This Agreement,  the Shareholders Agreement and the exhibits attached
hereto set forth the entire  understanding  of the parties  with  respect to the
subject matter hereof, supersede all existing agreements concerning such subject
matter,  and may be modified only by a written  instrument duly executed by each
party to be charged.  None of the parties hereto or their  affiliate has entered
into any other agreement concerning the Common Stock which is the subject matter
hereof with any other party hereto or any third party other than with respect to
any agreement specifically referred to herein.

          Section 5.5 Notices.  

           Any notice received by either Assignor with the Sepa Agreement or the
Pesa Agreement  shall be promptly  given to each  Assignee.  Any notice or other
communication  required or permitted to be given  hereunder  shall be in writing
and shall be mailed by certified mail,  return receipt requested (or by the most
nearly  comparable  method if mailed from or to a location outside of the United
States) or by Federal Express,  U.S. Express Mail, or similar overnight delivery
or  courier  service  or  delivered  (in  person  or  by  telecopy,  or  similar
telecommunications  equipment)  against receipt to the party to whom it is to be
given at the address of such party set forth below (or to such other  address as
the party shall have  furnished in writing in accordance  with the provisions of
this Section 5.5):

         Assignors:

                  CC Acquisition Company A
                  CC Acquisition Company B
                  c/o Camhy Karlinksy & Stein LLP
                  1740 Broadway
                  New York, New York 10019
                  Attn.:   Michael Wellesley-Wesley
                           c/o Daniel I. DeWolf, Esq.

         with a copy (which copy shall not constitute notice) to:

                  Camhy Karlinsky & Stein LLP
                  1740 Broadway
                  New York, New York  10019
                  Attn.:  Sheldon D. Camhy, Esq.


         Assignees:

                  WP GROUP ASSIGNEES

                  WPG Corporate Development Associates IV, L.P.
                  c/o Weiss, Peck & Greer Private Equity Group
                  One New York Plaza
                  New York, NY 10004-1950
                  Att:  Mr. Wesley W. Lang, Jr.
                  Telephone:    (212) 908-9500
                  Telecopier:   (212) 908-0112

                  WPG Corporate Development
                  Associates IV (Overseas), L.P.
                  c/o Weiss, Peck & Greer Private Equity Group
                  One New York Plaza
                  New York, NY 10004-1950
                  Attn:  Mr. Wesley W. Lang, Jr.
                  Telephone:    (212) 908-9500
                  Telecopier:   (212) 908-0112

                  WPG Enterprise Fund II, L.P.
                  555 California Street
                  Suite 4760
                  San Francisco, CA 94104
                  Attn:  Mr. Gill Cogan
                  Telephone:    (415) 622-6864
                  Telecopier:   (415) 989-5105

                  Weiss, Peck & Greer Venture Associates III, L.P.
                  555 California Street
                  Suite 4760
                  San Francisco, CA 94104
                  Attn:  Mr. Gill Cogan
                  Telephone:   (415) 622-6864
                  Telecopier:  (415) 989-5105

                  Westpool Investment Trust plc
                  Carlton House
                  33 Robert Adam Street
                  London W1M5AH
                  Attn:  Mr. Robert A. Rayne
                  Telephone:  011-44-171-935-3555
                  Telecopier: 011-44-171-935-3737

                  Lion Investment Limited
                  Carlton House
                  33 Robert Adam Street
                  London W1M5AH
                  Attn:  Mr. Robert A. Rayne
                  Telephone:  011-44-171-935-3555
                  Telecopier: 011-44-171-935-3737

                  Mr. Charles M. Diker
                  Weiss, Peck & Greer, L.L.C.
                  One New York Plaza
                  New York, NY 10004-1950
                  Telephone:    (212) 908-9500
                  Telecopier:   (212) 908-0176

         with a copy (which copy shall not constitute notice) to:

                  Chadbourne & Parke
                  30 Rockefeller Plaza
                  New York, New York  10112
                  Attn.:  Dennis J. Friedman, Esq.

          Any notice or other  communication given by certified mail (or by such
comparable  method) shall be deemed given at the time of  certification  thereof
(or comparable act) except for a notice changing a party's address which will be
deemed  given at the time of receipt  thereof.  Any notice  given by other means
permitted  by this  Section  5.5  shall be deemed  given at the time of  receipt
thereof.

          Section 5.6  Waiver.  

           Any  waiver by any  party of a breach of any terms of this  Agreement
shall not operate as or be  construed to be a waiver of any other breach of that
term or of any  breach of any other  term of this  Agreement.  The  failure of a
party to insist upon strict  adherence  to any term of this  Agreement on one or
more  occasions  will not be  considered  a waiver or deprive  that party of the
right  thereafter to insist upon strict adherence to that term or any other term
of this Agreement. Any waiver must be in writing.

          Section 5.7 Binding Effect.  

           The provisions of this  Agreement  shall be binding upon and inure to
the benefit of the Purchasers,  and their respective  successors and assigns and
the Assignors and its respective  successors and assigns, and shall inure to the
benefit of each  Indemnitee  and its  successors  and  assigns (if not a natural
person) and his  assigns,  heirs,  and  personal  representatives  (if a natural
person).

          Section 5.8 No  Third-Party  Beneficiaries.  

           This  Agreement  does not  create,  and  shall  not be  construed  as
creating,  any rights  enforceable  by any person not a party to this  Agreement
(except as provided in 5.7).

          Section  5.9  Separability.  

           If  any  provision  of  this  Agreement  is  invalid,   illegal,   or
unenforceable,  the balance of this Agreement shall remain in effect, and if any
provision is inapplicable to any person or circumstance,  it shall  nevertheless
remain applicable to all other persons and circumstances.

          Section 5.10  Headings.  

           The  headings  in  this  Agreement  are  solely  for  convenience  of
reference and shall be given no effect in the construction or  interpretation of
this Agreement.

          Section  5.11  Counterparts;  Governing  Law.  

           This Agreement may be executed in any number of counterparts  (and by
facsimile), each of which shall be deemed an original, but all of which together
shall  constitute  one and the same  instrument.  It shall be  governed  by, and
construed in accordance with, the laws of the State of New York,  without giving
effect to the rules governing the conflicts of laws.

          IN WITNESS  WHEREOF,  the parties have duly executed this Agreement as
of the date first written above.

                                   CC ACQUISITION COMPANY A, L.L.C.

                                   By:s/Michael Wellesly-Wesley
                                      Name: Michael Wellesly-Wesley
                                      Title: Vice President

                                   CC ACQUISITION COMPANY B, L.L.C.
                                   By:s/Michael Wellesly-Wesley
                                      Name: Michael Wellesly-Wesley
                                      Title: Vice President


                                   WPG CORPORATE DEVELOPMENT
                                     ASSOCIATES IV, L.P.

                                   By:  WPG PRIVATE EQUITY PARTNERS,
                                        L.P., its general partner


                                   By:s/Wesley W. Lang, Jr.
                                      Name: Wesley W. Lang, Jr.
                                      Title: General Partner


                                   WPG CORPORATE DEVELOPMENT
                                     ASSOCIATES IV (OVERSEAS), L.P.


                                   By:  WPG CDA IV (OVERSEAS), LTD.,
                                         its general partner

                                   By:s/Wesley W. Lang, Jr.
                                      Name: Wesley W. Lang, Jr.
                                      Title: Director


                                   WPG ENTERPRISE FUND II, L.P.

                                   By:  WPG VENTURE PARTNERS III,
                                        L.P., its general partner


                                   By:s/Philip Greer
                                      Name: Philip Greer
                                      Title: General Partner


                                   WEISS, PECK & GREER VENTURE
                                      ASSOCIATES III, L.P.

                                   By:  WPG VENTURE PARTNERS III,
                                         L.P., its general partner

                                   By:s/Philip Greer
                                      Name: Philip Greer
                                      Title: General Partner


                                   WESTPOOL INVESTMENT TRUST PLC

                                   By:s/Wesley W. Lang, Jr.
                                      Name: Wesley W. Lang, Jr.
                                      Title: Attorney-in-Fact


                                   LION INVESTMENTS LIMITED

                                   By:s/Wesley W. Lang, Jr.
                                      Name: Wesley W. Lang, Jr.
                                      Title: Attorney-in-Fact

                                   s/Charles M. Diker

                                   CHARLES M. DIKER


                                   MINT HOUSE NOMINEES LIMITED

                                   By:s/Michael Wellesly-Wesley
                                      Name: Michael Wellesly-Wesley
                                      Title: Attorney-in-Fact

                                   PINE STREET VENTURES, L.L.C.

                                   By:s/Michael Wellesly-Wesley
                                      Name: Michael Wellesly-Wesley
                                      Title: Attorney-in-Fact


                                   s/Michael Wellesly-Wesley Attorney-in-Fact
                                   ISAAC HERSLY
     
                                   s/Michael Wellesly-Wesley Attorney-in-Fact
                                   ALAN I. ANNEX

                                   s/Michael Wellesly-Wesley Attorney-in-Fact
                                   ILAN KAUFTHAL


                                   Z FOUR PARTNERS L.L.C.

                                   By: s/Michael Wellesly-Wesley
                                       Name: Michael Wellesly-Wesley
                                       Title: Attorney-in-Fact

                                   s/Michael Wellesly-Wesley Attorney-in-Fact
                                   A.J.L. BEARE


<PAGE>

                                  EXHIBIT A-1

PART I

WPG Corporate            10,416,822          7,353,793
Development Associates
IV, L.P.

WPG Corporate             2,511,862          1,773,258
Development Associates
IV (Overseas), L.P.

Weiss, Peck & Greer       2,152,195          1,519,350
Venture Associates III,
L.P.

WPG Enterprise Fund II    2,588,322          1,827,235
L.P.

Westpool Investment       4,094,080          2,890,231
Trust plc

Lion Investments Limited  1,939,306          1,369,060

Charles M. Diker            861,912            608,470

PART II

Pine Street Ventures,        36,001              25,414
L.L.C.

Isaac Hersly                 50,000              35,298

Ilan Kaufthal               175,000             123,542

Mint House Nominees,         43,000              30,356
Ltd.

Z Four Partners L.L.C.       87,500              61,771

A.J.L. Beare                 26,000              18,355

Alan I. Annex                18,000              12,707

CC Acquisition Company                       11,765,892
B, L.L.C.

<PAGE>

                                  Exhibit A-2
<TABLE>


 

<S>                                            <C>                         <C>             <C>                         <C>
                                                        1                     2                     3

                                                   Total Shares                                # of Shares
                                               Purchased at Closing                        Purchased from Pesa
                    Name                                                   Percent              at Closing

PART I

WPG CDA IV, L.P.                                     10,416,822             41.67%                8,333,458
WPG CDA IV (Overseas), Ltd.                           2,511,862             10.05%                2,009,490
WPG Venture Associates III, L.P.                      2,152,195              8.61%                1,721,756
WPG Enterprise Fund II, L.P.                          2,588,322             10.35%                2,070,857
Westpool Investment Trust plc                         4,094,080             16.38%                3,275,264
Lion Investments Limited                              1,939,306              7.76%                1,561,445
Charles Diker                                           861,912              3.45%                  689,530


PART II

Pine Street Ventures, L.L.C.                             36,000              0.15%                   28,800
Isaac Hersly                                             50,000              0.20%                   40,000
Mint House Nominess, Ltd.                                43,000              0.17%                   34,400
Ilam Kaufthal                                           175,000              0.70%                  140,000
Alan I. Annex                                            18,000              0.07%                   14,400
Z Four Partners, L.C.C.                                  87,500              0.35%                   70,000
A.J.L. Beare                                             26,000              0.10%                   20,800
                                                     ----------            ------                ----------
Total:                                               25,000,000            100.00%               20,000,000







                                                        4                     5                     6
                                                   $ of Shares           # of Shares           $ of Shares
                                               Purchased from Pesa   Purchased from Sepa   Purchased from Sepa
                    Name                            at Closing            at Closing            at Closing

PART I

WPG CDA IV, L.P.                                     4,416,732.63          2,083,364             1,083,349.51
WPG CDA IV (Overseas), Ltd.                          1,065,029.66            502,372               261,233.69
WPG Venture Associates III, L.P.                       912,530.78            430,439               223,828.30
WPG Enterprise Fund II, L.P.                         1,097,448.40            517,865               269,185.46
Westpool Investment Trust plc                        1,735,890.07            818,816               425,784.36
Lion Investments Limited                               822,265.72            387,861               201,687.82
Charles Diker                                          365,450.74            172,382                89,638.86


PART II

Pine Street Ventures, L.L.C.                            15,264.00              7,200                 3,816.00
Isaac Hersly                                            21,200.00             10,000                 5,300.00
Mint House Nominess, Ltd.                               18,232.00              8,600                 4,558.00
Ilam Kaufthal                                           74,200.00             35,000                18,550.00
Alan I. Annex                                            7,632.00              3,600                 1,908.00
Z Four Partners, L.C.C.                                 37,100.00             17,500                 9,275.00
A.J.L. Beare                                            11,024.00              5,200                 2,756.00
                                                    -------------          ---------             ------------
Total:                                              10,600,000.00          5,000,000             2,600,000.00









                                                        7                     8                     9                     10
                                                 # of "B" Shares       $ of "B" Shares                                    WP
                                                    Purchased             Purchased             Additional              Group
                    Name                            from Pesa             from Pesa           Consideration            Percent

PART I

WPG CDA IV, L.P.                                      7,353,793           3,529,820.56            416,672.89            42.41
WPG CDA IV (Overseas), Ltd.                           1,773,258             851,163.95            100,474.50            10.23
WPG Venture Associates III, L.P.                      1,519,350             729,287.95             86,087.81             8.76
WPG Enterprise Fund II, L.P.                          1,827,235             877,072.77            103,532.87            10.54
Westpool Investment Trust plc                         2,890,231           1,387,310.71            163,763.21            16.67
Lion Investments Limited                              1,369,060             657,148.78             77,572.24             7.89
Charles Diker                                           608,470             292,065.57             34,476.48             3.51


PART II

Pine Street Ventures, L.L.C.                             25,414              12,198.72              1,440.00
Isaac Hersly                                             35,298              16,943.04              2,000.00
Mint House Nominess, Ltd.                                30,356              14,570.88              1,720.00
Ilam Kaufthal                                           123,542              59,300.16              7,000.00
Alan I. Annex                                            12,707               6,099.36                720.00
Z Four Partners, L.C.C.                                  61,774              29,650.08              3,900.00
A.J.L. Beare                                             18,355               8,810.40              1,040.00
                                                     ----------           ------------            ----------
Total:                                               17,648,839           8,471,442.82          1,000,000.00



</TABLE>


                                                                       Exhibit D


                            STOCKHOLDERS' AGREEMENT

                  STOCKHOLDERS'  AGREEMENT,  dated as of July 25,  1995,  by and
among CC ACQUISITION  COMPANY A, L.L.C.,  a Delaware limited  liability  company
("CCACA"),  CC  ACQUISITION  COMPANY B,  L.L.C.,  a Delaware  limited  liability
company  ("CCACB" and together with CCACA,  "CCAC"),  WPG CORPORATE  DEVELOPMENT
ASSOCIATES  IV, L.P., a Delaware  limited  partnership  ("CDA"),  WPG  CORPORATE
DEVELOPMENT  ASSOCIATES IV (OVERSEAS),  L.P., a Cayman Islands  exempted limited
partnership  ("CDAO"),   WPG  ENTERPRISE  FUND  II,  L.P.,  a  Delaware  limited
partnership  ("WPGII"),  Weiss,  Peck & Greer Venture  Associates  III,  L.P., a
Delaware limited partnership ("WPGIII"), Westpool Investment Trust plc, a public
limited company  organized under the laws of England  ("WIT"),  Lion Investments
Limited,  a limited company  organized under the laws of England  ("Lion"),  and
CHARLES M. DIKER (such individual  together with CDA, CDAO, WPGII,  WPGIII,  WIT
and Lion, the "New Investor Group").

                              W I T N E S S E T H:

                  WHEREAS,  CCACA, CCACB and Pesa, Inc., a Delaware  corporation
("Pesa") have entered into a Stock Purchase Agreement dated May 26, 1995 for the
purchase by CCACA and CCACB of 59,414,732 shares of common stock, par value $.01
per share (the "Common Stock"),  of Chyron  Corporation,  a New York corporation
(the "Company"), from Pesa (the "Pesa Purchase");

                  WHEREAS, CCACA, Sepa Technologies Ltd., Co., a Georgia limited
liability company ("Sepa"),  and John A. Servizio ("Servizio") have entered into
a Stock  Purchase  Agreement  dated May 26,  1995 for the  purchase  by CCACA of
5,000,000  shares of Common  Stock  and the  acquisition  by CCACA of a right of
first  refusal with  respect to 9,000,000  shares of Common Stock from Sepa (the
"Sepa Purchase");

                  WHEREAS,  simultaneous  with the execution of this  Agreement,
CCACA,  CCACB, Pesa, Sepa, Servizio and the New Investor Group have entered into
an  assignment  and  assumption   agreement  (the   "Assignment  and  Assumption
Agreement") with respect to the Pesa Purchase and the Sepa Purchase  pursuant to
which CCACA and CCACB have assigned certain of their rights to acquire shares of
Common Stock on the terms set forth therein;

                  WHEREAS,  the  parties  hereto  wish  to  enter  into  certain
agreements  with  respect to the Common Stock to be  Beneficially  Owned by them
upon  consummation  of the Pesa  Purchase,  Sepa  Purchase  and  Assignment  and
Assumption Agreement;

                  NOW,  THEREFORE,  in consideration of the mutual covenants and
agreements herein contained, the parties hereto agree as follows:

                   1. Definitions.  As used in this Agreement,  terms defined in
this Agreement,  including the heading and recitals, shall have their respective
assigned meanings,  and the following  capitalized terms shall have the meanings
ascribed to them below:

                  "Affiliate"  shall  mean  (i) in the  case  of any  individual
stockholder,  any Associate of such  individual or (ii) in the case of any other
Person,   any  Person  that   directly  or   indirectly   through  one  or  more
intermediaries,  controls,  is  controlled  by or under common  control with the
Person  in  question.  As used  herein,  "control"  shall  mean  the  Beneficial
Ownership of at least a majority of the equity  interests of a Person  entitling
the owner of such  interests  to direct  the  policies  and  operations  of such
Person.

                  "Associate"  of any Person shall mean any spouse  (including a
former  spouse  under a legally  terminated  marriage)  or  descendant  (whether
natural,  step or  adopted) of such Person (a  "Relative")  or any trust  formed
exclusively  for the  benefit  of such  Person or one or more  Relative  of such
Person.

                  "Beneficially  Own" or "Beneficial  Ownership" with respect to
any securities shall mean having  "beneficial  ownership" of such securities (as
determined  pursuant to Rule 13d-3 under the Exchange Act of 1934,  as amended),
including  pursuant to any agreement,  arrangement or understanding,  whether or
not in writing.

                   "Board of Directors" shall mean the Board of Directors of the
Company.

                  "Party"  shall  mean a  Stockholder  party to this  Agreement,
including a Permitted Transferee under this Agreement.  References herein to any
particular   Party  shall   include  such  Party  and  such  Party's   Permitted
Transferees.

                  "Permitted  Transferee"  shall mean any Person to whom a Party
transfers shares of Common Stock in accordance with the terms of this Agreement,
and includes any Person to whom a Permitted  Transferee  (as thus defined) (or a
Permitted Transferee of a Permitted  Transferee) so further transfers shares and
who is required to, and does, become bound by the terms of this Agreement.

                  "Person" shall mean any individual, corporation,  partnership,
trust or other entity of any nature whatsoever.

                  "Securities"  shall mean equity  securities of the Company and
options,  warrants and other rights to acquire equity securities of the Company,
and shall include, without limitation, the Common Stock.

                  "Stockholder" shall mean any Person owning beneficially and/or
of record any of the shares of the Common Stock.

                  "Transfer"   shall  mean  any  transfer,   sale,   assignment,
exchange,  mortgage,  pledge,  hypothecation or other  disposition of any Common
Stock or any interest therein.

                  2. Board of Directors.  (a) Each of the Parties agrees to vote
or cause to be voted all the  shares of Common  Stock of which such Party is the
Beneficial  Owner so that the Board of Directors  shall be  constituted  to have
nine  members.  Until  such date as CCAC  ceases to  Beneficially  Own 8% of the
issued  and  outstanding  shares of Common  Stock,  CCAC shall have the right to
nominate three members of the Board of Directors (the "CCAC Directors") and each
of the  Parties  agrees  to vote or cause to be voted  all the  shares of Common
Stock of which such  Party is the  Beneficial  Owner in favor of such  nominees.
Until such date as the New Investor Group ceases to  Beneficially  Own 8% of the
issued and outstanding  shares of Common Stock,  (i) CDA, CDAO, WPGII and WPGIII
(collectively,  the "WP Group")  shall have the right to nominate  one member to
the Board of Directors, (ii) WIT and Lion (collectively,  "WIT/Lion") shall have
the right to  nominate  one  member to the Board of  Directors  and (iii) the WP
Group and WIT/Lion  shall  together have the right to nominate one member to the
Board of Directors  (collectively,  the "New Investor Group Directors") and each
of the  Parties  agrees  to vote or cause to be voted  all the  shares of Common
Stock of which such  Party is the  Beneficial  Owner in favor of such  nominees.
With respect to the three members of the Board of Directors  other than the CCAC
Directors and the New Investor Group  Directors (the  "Independent  Directors"),
neither  CCAC nor the New  Investor  Group shall  nominate or vote the shares of
Common  Stock  of  which  such  Party  is the  Beneficial  Owner in favor of the
election of any  Independent  Director unless CCAC and the WP Group and WIT/Lion
each agrees  with such  nomination  or each votes the shares of Common  Stock of
which such Party is the Beneficial  Owner in favor of such election and CCAC and
the WP Group and  WIT/Lion  each  shall  cause (to the  extent  permitted  under
applicable  laws and to the extent  within such Party's  control) the members of
the Board of Directors  designated by it not to nominate or vote in favor of the
election  of any  Independent  Director  unless  the  members  of the  Board  of
Directors  designated by the other group agrees with such nomination or votes in
favor of such election.

                  (b) It is CCAC's and the New  Investor  Group's  understanding
that as of the date of this  Agreement,  three members of the Board of Directors
will have resigned from the Board of Directors and the four remaining members of
the Board of Directors  will increase the size of the Board of Directors to nine
and  vote  for the  election  of two of the  CCAC  Directors  and all of the New
Investor Group Directors.  CCAC and the New Investor Group each hereby agrees it
shall  promptly  take  whatever  action  necessary  to effect the intent of this
Agreement,  including,  without  limitation,  making a written  request  for the
Secretary of the Company to call a special  meeting of the  Stockholders  to, if
necessary,  (i) elect the CCAC Directors and the New Investor  Group  Directors,
(ii) remove any members of the Board of Directors  who are not agreed to by CCAC
and the New  Investor  Group  and (iii)  elect  Independent  Directors.  At such
meeting of  Stockholders,  CCAC and the New Investor  Group each hereby agree to
vote all of the shares of Common  Stock  owned or held of record by it to effect
the  intent  of the  immediately  preceding  sentence  and  the  intent  of this
Agreement.

                  (c) If either CCAC or the New Investor  Group shall notify the
other of its desire to remove any director of the Company previously  designated
by it, each of the other  Parties,  subject to  applicable  law and Section 2(e)
below,  shall  vote or cause to be voted all of the  shares  of Common  Stock of
which such Party is the Beneficial Owner so as to remove such director.

                  (d) If any director  previously  designated by CCAC or the New
Investor  Group ceases to serve on the Board of Directors  (whether by reason of
death,  resignation,  removal  or  otherwise),  the party that  designated  such
director shall be entitled to designate a successor director to fill the vacancy
created  thereby and each of CCAC and the New Investor  Group shall,  subject to
applicable  law,  cause the  directors  designated by it to vote for such person
designated to fill such vacancy.

                  (e) Each of the Parties  agrees to indemnify and hold harmless
the Company  and each other  Party from and against any and all losses,  claims,
damages or liabilities (or actions in respect  thereof) to which the Company and
the other Parties,  as the case may be, may be subject,  insofar as such losses,
claims,  damages or liabilities  arise out of or are based upon the removal,  in
accordance  with the  specific  provisions  of this  Section 2, of any  director
previously  designated by it pursuant to this Section 2, and shall reimburse the
Company  and the  other  Parties,  as the  case may be,  for any  legal or other
expenses  reasonably  incurred by the Company and the other Parties, as the case
may be, in connection  with  investigating  or defending  any such loss,  claim,
damage, liability or action.

                  (f) The  Parties  hereto  hereby  agree  that  any  individual
designated  as a director of the Company may be removed for Cause.  For purposes
of this Section  2.2(f),  "Cause" shall mean the  conviction of, or plea of nolo
contendere to, a felony by such party,  or commitment of fraud,  embezzlement or
theft by such party against the Company,  in each case as reasonably  determined
by a majority vote of the Board of  Directors.  No such removal of an individual
designated pursuant to this Section 2 shall affect any of the Parties' rights to
designate a different individual pursuant to this Section 2.

                  3. Transfers. (a) Notwithstanding any other provisions of this
Agreement,  each Party shall be entitled from time to time,  without the consent
of any other  Parties or  compliance  with any of the  procedures  specified  in
Section 5 hereof,  to Transfer any or all of the shares of Common Stock owned by
it to any of its  Affiliates,  any other Party or any limited  partner of any of
the general  partnerships that is a Party or an Affiliate of a Party, so long as
such  Permitted  Transferee  agrees in form and  substance  satisfactory  to the
Parties, to be, and becomes, bound by the terms of this Agreement.

                  (b) Each  Party  agrees  that it and its  Affiliates  will not
Transfer  10% or more of the  outstanding  shares  of  Common  Stock in one or a
series of  transactions  unless (i) such Transfer is in accordance  with Section
3(a) hereof,  (ii) such Transfer is in compliance with the procedures  specified
in Section 5 hereof and such Permitted  Transferee  agrees in form and substance
satisfactory  to the  Parties,  to be, and  becomes,  bound by the terms of this
Agreement or (iii) such  Transfer is in  connection  with any offering of Common
Stock (x) pursuant to a  registration  statement  filed with the  Securities and
Exchange  Commission,  (y) pursuant to the volume and manner of sale limitations
set forth in Rule 144 under the  Securities  Act of 1933, as amended (the "Act")
or (z) pursuant to Regulation S of the Act.

                   4. Effect of Void  Transfers.  In the event of any  purported
Transfer of any shares of Common Stock in violation of the provisions of this
Agreement, such purported Transfer shall be void and of no effect.

                  5. Tag-Along  Rights.  (a) Subject to Section 5(b) hereof,  no
later than 20 days prior to the proposed date of  consummation  of a Transfer of
any shares of Common  Stock,  the  transferring  Party shall  provide each other
Party with written notice of the proposed Transfer, including the Person to whom
it wishes to Transfer  shares,  the number of shares proposed to be Transferred,
and the price and other material terms and conditions of the proposed  Transfer.
Each such other Party shall then have the right by notice given no later than 10
days  following  receipt  of the  20-day  notice  referred  to  above,  and  the
transferring  Party  shall  afford  each such other  Party the  opportunity,  to
include in such  Transfer a pro rata  portion of the shares of Common Stock held
by such  other  Party on the same  terms  and  conditions.  The term  "pro  rata
portion" as used above shall be determined by  multiplying  the number of shares
of Common  Stock owned by a Party at such time by a fraction,  the  numerator of
which is equal to the  number of shares of Common  Stock  owned by such Party at
such time and the  denominator  of which is the number of shares of Common Stock
owned  by all  Parties  at such  time  having  elected  to  participate  in such
Transfer. If necessary,  the party initially proposing the Transfer shall reduce
the number of its shares to be included in the  Transfer to permit such pro rata
participation. In the event any Party elects to sell less than its full pro rata
portion,  the  difference  shall be  allocated  among each of the other  Parties
having  elected to  participate in such Transfer and each such other Party shall
be  entitled  to  include  in such  Transfer  its pro rata  portion  (calculated
excluding  such  difference  from the  denominator  of the fraction  referred to
above) of such difference until no such difference remains.

                  (b) The  Tag-Along  Rights of the Parties shall not pertain or
apply to (a) any  offering of Common  Stock by the Parties or their  transferees
(i) pursuant to a registration  statement filed with the Securities and Exchange
Commission or any similar  authority outside the United States, or (ii) pursuant
to the  volume and  manner of sale  limitations  set forth in Rule 144 under the
Securities  Act of 1933,  as  amended,  as in  effect on the date  thereof,  (b)
pledges of Common Stock which create a mere security interest pursuant to a bona
fide loan  transaction,  or to the acquisition (by virtue of the exercise of the
security  interest  created  by such  pledge in  accordance  with its  terms) or
subsequent sale of such Common Stock by the pledgee, (c) (i) any transaction for
which neither the Transferring  Party nor its Affiliates or Associates  receives
any consideration, directly or indirectly or (ii) any Transfers permitted by the
terms of Section 3 hereof.

                  6.  Termination.  This Agreement shall terminate,  and thereby
become null and void,  on the earlier to occur of (i) the tenth  anniversary  of
the date  hereof and (ii) the date that either  CCAC or the New  Investor  Group
cease to  Beneficially  Own at least five percent of the issued and  outstanding
shares of Common Stock, except with respect to Section 2(e), which shall survive
indefinitely.

                   7.   Representations   and  Warranties.   Each  Party  hereto
represents and warrants as follows:

                  (a) The Person  executing  and  delivering  this  Agreement on
behalf of such Party is duly authorized to execute and deliver this Agreement on
behalf of such Party.  This  Agreement  has been duly  executed and delivered by
such Party and  constitutes  the legal,  valid and  binding  obligation  of such
Party, enforceable against such Party in accordance with the terms hereof.

                  (b) The execution and delivery of this Agreement by such Party
does not, and the performance by it of its obligations under this Agreement will
not,  violate,  conflict with or constitute a breach of, or a default under, any
material  agreement  or  instrument  to which  such Party is a party or which is
binding on such Party or the  assets of such  Party,  and will not result in the
creation  of any lien on, or  security  interest  in,  any of the assets of such
Party.

                  (c) It has good and  marketable  title to any shares of Common
Stock held by it immediately prior to the date of this Agreement, free and clear
of any claims, liens, encumbrances or security interests whatsoever.

                  8.       Miscellaneous.

                  (a) Other Stockholders' Agreements. None of the Parties hereto
nor any Permitted  Transferees thereof have entered into or shall enter into any
stockholder agreement or arrangement of any kind with any Person with respect to
voting of the Common Stock or that is otherwise inconsistent with the provisions
of this Agreement.

                  (b)  Amendments.  This  Agreement  may be  amended  only  by a
written instrument signed by Parties that represent a majority of the issued and
outstanding  shares then Beneficially Owned by each of CCAC and the New Investor
Group.

                  (c) Successors,  Assigns and Transferees. This Agreement shall
be binding  upon and shall inure to the benefit of the Parties  hereto and their
Permitted  Transferees,  each of  which  Permitted  Transferees  shall  agree in
writing to be bound by the terms of this Agreement.

                  (d) Integration.  This Agreement and the documents referred to
herein or delivered  pursuant  hereto  contain the entire  understanding  of the
parties  with  respect  to  its  subject  matter.  There  are  no  restrictions,
agreements,  promises,  representations,  warranties,  covenants or undertakings
with respect to the subject  matter hereof other than those  expressly set forth
herein  or  therein.   This  Agreement   supersedes  all  prior  agreements  and
understandings between the Parties with respect to its subject matter.

                  (e) Notices. All notices and other communications provided for
hereunder shall be in writing and shall be sent by certified or registered mail,
postage  prepaid  and  return  receipt  requested,   or  by  overnight  courier,
telecopier or hand delivery:

                  If to CCAC:

                  Michael Wellesley-Wesley
                  c/o Camhy Karlinsky & Stein LLP
                  1740 Broadway
                  New York, New York  10019
                  Attn:  Daniel I. De Wolf, Esq.
                  Telephone:        (212) 977-6600
                  Telecopier:       (212) 977-8389

                  with a copy to:

                  Sheldon D. Camhy, Esq.
                  Camhy Karlinsky & Stein LLP
                  1740 Broadway
                  New York, New York  10019
                  Telephone:        (212) 977-6600
                  Telecopier:       (212) 977-8389

                  If to the New Investor Group:

                  WPG Corporate Development Associates IV, L.P.
                  c/o Weiss, Peck & Greer Private Equity Group
                  One New York Plaza
                  New York, NY 10004-1950
                  Attn:  Mr. Wesley W. Lang, Jr.
                  Telephone:        (212) 908-9500
                  Telecopier:       (212) 908-0112

                  WPG Corporate Development
                  Associates IV (Overseas), L.P.
                  c/o Weiss, Peck & Greer Private Equity Group
                  One New York Plaza
                  New York, NY 10004-1950
                  Attn:  Mr. Wesley W. Lang, Jr.
                  Telephone:        (212) 908-9500
                  Telecopier:       (212) 908-0112

                  WPG Enterprise Fund II, L.P.
                  555 California Street
                  Suite 4760
                  San Francisco, CA 94104
                  Attn:  Mr. Gill Cogan
                  Telephone:        (415) 622-6864
                  Telecopier:       (415) 989-5105

                  Weiss, Peck & Greer Venture Associates III, L.P.
                  555 California Street
                  Suite 4760
                  San Francisco, CA 94104
                  Attn:  Mr. Gill Cogan
                  Telephone:        (415) 622-6864
                  Telecopier:       (415) 989-5105

                  Westpool Investment Trust plc
                  Carlton House
                  33 Robert Adam Street
                  London W1M5AH
                  Attn:  Mr. Robert A. Rayne
                  Telephone:        011-44-171-935-3555
                  Telecopier:       011-44-171-935-3737

                  Lion Investments Limited
                  Carlton House
                  33 Robert Adam Street
                  London W1M5AH
                  Attn:  Mr. Robert A. Rayne
                  Telephone:        011-44-171-935-3555
                  Telecopier:       011-44-171-935-3737

                  Mr. Charles M. Diker
                  Weiss, Peck & Greer, L.L.C.
                  One New York Plaza
                  New York, NY 10004-1950
                  Telephone:        (212) 908-9500
                  Telecopier:       (212) 908-0176

                  with a copy to:

                  Dennis J. Friedman, Esq.
                  Chadbourne & Parke
                  30 Rockefeller Plaza
                  New York, New York  10112-0127
                  Telephone:        (212) 508-5100
                  Telecopier:       (212) 541-5369

or to such other address as any of the parties may  designate.  All such notices
and communications shall be deemed to have been given or made (i) when delivered
by hand, (ii) one business day after being sent by overnight  courier,  or (iii)
when telecopied, receipt acknowledged.

                   (f) Descriptive Headings.  The headings in this Agreement are
for  convenience of reference  only and shall not limit or otherwise  affect the
meaning of the terms contained herein.

                  (g)  Severability.  In the  event  that any one or more of the
provisions,  paragraphs,  words, clauses, phrases or sentences contained herein,
or the application  thereof in any  circumstances,  is held invalid,  illegal or
unenforceable  in any  respect  for any  reason,  the  validity,  legality,  and
enforceability  of any such  provision,  paragraph,  word,  clause,  phrase,  or
sentence in every other  respect and of the  remaining  provisions,  paragraphs,
words,  clauses,  phrases, or sentences hereof shall not be in any way impaired,
it being intended that all rights,  powers, and privileges of the parties hereto
shall be enforceable to the fullest extent permitted by law.

                  (h)  Governing  Law. This  Agreement  shall be governed by and
construed  and  enforced  in  accordance  with the laws of the State of New York
applicable to contracts  made and to be performed  therein.  The Parties to this
hereby agree to submit to the  non-exclusive  jurisdiction  of the courts of the
State of New York in any action or proceeding arising out of or relating to this
Agreement.

                  (i) Injunctive Relief. The Parties  acknowledge and agree that
a  violation  of any of the  terms of this  Agreement  will  cause  the  Parties
irreparable   injury  for  which  adequate  remedy  at  law  is  not  available.
Accordingly,  it is agreed that each Party  shall be entitled to an  injunction,
restraining  order  or  other  equitable  relief  to  prevent  breaches  of  the
provisions  of  this  Agreement  and  to  enforce  specifically  the  terms  and
provisions hereof in any court of competent jurisdiction in the United States or
any state thereof, in addition to any other remedy to which they may be entitled
at law or equity.

                  (j) Counterparts. This Agreement may be executed in any number
of counterparts,  each of which shall be deemed to be an original,  but all such
counterparts shall together constitute one and the same Agreement.



<PAGE>


                  IN WITNESS WHEREOF,  each of the undersigned has executed this
Agreement  or caused this  Agreement to be executed on its behalf as of the date
first written above.


                                      CC ACQUISITION COMPANY A, L.L.C.


                                         By: s/M.I. Wellesley-Wesley
                                             Name:  M.I. Wellesley-Wesley
                                             Title: Vice President


                                      CC ACQUISITION COMPANY B, L.L.C.


                                         By: s/M.I. Wellesley-Wesley
                                             Name:  M.I. Wellesley-Wesley
                                             Title: Vice President


                                       WPG CORPORATE DEVELOPMENT
                                        ASSOCIATES IV, L.P.


                                          By:   WPG PRIVATE EQUITY PARTNERS,
                                                L.P., its general partner


                                             By: s/Wesley W. Lang, Jr.
                                                 Name: Wesley W. Lang, Jr.
                                                 Title: General Partner


                                       WPG CORPORATE DEVELOPMENT
                                        ASSOCIATES IV (OVERSEAS), L.P.


                                          By:   WPG CDA IV (OVERSEAS),
                                                LTD., its general partner

                                             By: s/Wesley W. Lang, Jr.
                                                 Name:  Wesley W. Lang, Jr.
                                                 Title: Director


                                       WPG ENTERPRISE FUND II, L.P.


                                          By: WPG VENTURE PARTNERS III,
                                              L.P., its general partner


                                             By: s/Philip Greer
                                                 Name:  Philip Greer
                                                 Title: General Partner


                                       WEISS, PECK & GREER VENTURE
                                          ASSOCIATES III, L.P.


                                          By: WPG VENTURE PARTNERS III,
                                              L.P., its general partner


                                             By: s/Philip Greer
                                                 Name:  Philip Greer
                                                 Title: General Partner


                                       WESTPOOL INVESTMENT TRUST PLC


                                          By: s/ Wesley W. Lang, Jr.
                                              Name:  Wesley W. Lang, Jr.
                                              Title: Attorney-in-Fact


                                       LION INVESTMENTS LIMITED


                                          By: s/Wesley W. Lang, Jr.
                                              Name:  Wesley W. Lang, Jr.
                                              Title: Attorney-in-Fact


                                       CHARLES M. DIKER

                                       s/Charles M. Diker









                                                                       Exhibit E

                         REGISTRATION RIGHTS AGREEMENT

          This  REGISTRATION  RIGHTS  AGREEMENT  (the  "Agreement")  is made and
entered  into  as of  the  25th  day  of  July,  1995,  by  and  between  CHYRON
CORPORATION,  a New York corporation (the "Company"), and CC ACQUISITION COMPANY
A, L.L.C.,  a Delaware  limited  liability  company,  CC ACQUISITION  COMPANY B,
L.L.C.,  a  Delaware  limited  liability  company,  WPG  CORPORATE   DEVELOPMENT
ASSOCIATES, IV, L.P., a Delaware limited partnership,  WPG CORPORATE DEVELOPMENT
ASSOCIATES IV (Overseas),  L. P., a Cayman Islands exempted limited partnership,
WPG ENTERPRISES FUND II, L.P., a Delaware  limited  partnership,  WEISS,  PECK &
GREER VENTURE ASSOCIATES,  III, L.P., a Delaware limited  partnership,  WESTPOOL
INVESTMENT  TRUST  PLC, a public  limited  company  organized  under the laws of
England, LION INVESTMENTS LIMITED, a limited company organized under the laws of
England,  CHARLES DIKER,  MINT HOUSE  NOMINEES  LIMITED,  PINE STREET  VENTURES,
L.L.C., a Delaware limited liability company,  ISAAC HERSLY, ALAN I. ANNEX, ILAN
KAUFTHAL,  Z FOUR PARTNERS  L.L.C., a Delaware limited  liability  company,  and
A.J.L. BEARE, (collectively, the "Purchasers").

                                R E C I T A L S

          WHEREAS, the Purchasers are purchasing 64,414,732 shares of the common
stock,  par value $.01 per share, of the Company (the "Shares") from Pesa, Inc.,
a Delaware corporation  ("PESA"),  pursuant to a Stock Purchase Agreement by and
among CC Acquisition  Company A, L.L.C., CC Acquisition  Company B, L.L.C.,  and
PESA, dated as of May 26, 1995 and pursuant to a stock purchase agreement by and
among Sepa Technologies Ltd., Co., John A. Servizio,  and CC Acquisition Company
A,  L.L.C.,  dated  as of  May  26,  1995  (collectively,  the  "Stock  Purchase
Agreements");

          WHEREAS,  it is in the best  interests  of the Company  that the Stock
Purchase Agreements be closed;

          NOW,   THEREFORE,   in   consideration   of   the   mutual   premises,
representations,  warranties  and conditions  set forth in this  Agreement,  the
parties hereto, intending to be legally bound, hereby agree as follows:

          1.  Definitions  and References.  For purposes of this  Agreement,  in
addition to the definitions set forth above and elsewhere herein,  the following
terms shall have the following meanings:

           (a) The term  "Commission"  shall mean the  Securities  and  Exchange
     Commission and any successor agency.

           (b) The terms "register", "registered" and "registration" shall refer
     to a registration effected by preparing and filing a registration statement
     or similar document in compliance with the 1933 Act (as herein defined) and
     the declaration or ordering of effectiveness of such registration statement
     or document.

           (c) For  purposes of this  Agreement,  the term  "Registrable  Stock"
     shall  mean (i) the  Shares,  (ii) any  shares of the  common  stock of the
     Company,  par  value  $.01 per share  (the  "Common  Stock")  issued as (or
     issuable upon the conversion or exercise of any warrant,  right,  option or
     other  convertible  security  which  is  issued  as) a  dividend  or  other
     distribution with respect to, or in exchange for, or in replacement of, the
     Shares,  and (iii) any  Common  Stock  issued by way of stock  split of the
     Shares.  For purposes of this Agreement,  any Registrable Stock shall cease
     to be  Registrable  Stock when (w) a registration  statement  covering such
     Registrable  Stock has been declared  effective and such Registrable  Stock
     has been disposed of pursuant to such effective registration statement, (x)
     such  Registrable  Stock  is  sold  pursuant  to Rule  144 (or any  similar
     provision then in force) under the 1933 Act, (y) such Registrable Stock has
     been otherwise transferred,  no stop transfer order affecting such stock is
     in effect and the Company has delivered new certificates or other evidences
     of ownership for such Registrable  Stock not bearing any legend  indicating
     that such shares have not been  registered  under the 1933 Act, or (z) such
     Registrable  Stock is sold by a person in a transaction in which the rights
     under the provisions of this Agreement are not assigned.

           (d) The term "Holder"  shall mean the Purchasers or any transferee or
     assignee  thereof to whom the rights under this  Agreement  are assigned in
     accordance  with the  provisions  of Section 11 hereof,  provided  that the
     Purchasers or such transferee or assignee shall then own Registrable Stock.

           (e) The term "1933 Act" shall  mean the  Securities  Act of 1933,  as
     amended.

           (f) An  "affiliate  of such Holder" shall mean a person who controls,
     is controlled by or is under common control with such Holder, or the spouse
     or children (or a trust  exclusively  for the benefit of the spouse  and/or
     children)  of  such  Holder,  or,  in  the  case  of  a  Holder  that  is a
     partnership, its partners.

           (g)  The  term  "Person"  shall  mean  an  individual,   corporation,
     partnership,  trust, limited liability company, unincorporated organization
     or association or other entity, including any governmental entity.

           (h) The term  "Requesting  Holders" shall mean a Holder or Holders of
     in the aggregate of at least five (5) million shares of Registrable Stock.

           (i) References in this  Agreement to any rules,  regulations or forms
     promulgated by the Commission  shall include rules,  regulations  and forms
     succeeding  to the  functions  thereof,  whether  or not  bearing  the same
     designation.

           2. Demand Registration.

           (a) At any time after January 25, 1996,  any  Requesting  Holders may
make a written request to the Company (specifying that it is being made pursuant
to this Section 2) that the Company file a registration statement under the 1933
Act (or a  similar  document  pursuant  to any  other  statute  then  in  effect
corresponding to the 1933 Act) covering the  registration of Registrable  Stock.
In such event,  the Company shall (x) within ten (10) days thereafter  notify in
writing all other Holders of Registrable Stock of such request,  and (y) use its
best efforts to cause to be registered under the 1933 Act all Registrable  Stock
that the Requesting Holders and such other Holders have, within twenty (20) days
after the Company  has given such  notice,  requested  be  registered.  Unless a
majority  in  interest  of  the  Holders   requesting  to  participate  in  such
registration  shall  consent in writing,  no other party,  including the Company
(but  excluding  another  Holder),  shall be  permitted to offer  securities  in
connection with such registration; provided, however, that this limitation shall
not  restrict  or limit  any  registrations  or  rights  to  participate  in any
registration provided under or contained in the Registration Rights Agreement by
and between the Company and Pesa, dated December 27, 1991.

           (b) If the Requesting  Holders  intend to distribute the  Registrable
Stock covered by their request by means of an underwritten offering,  they shall
so advise the Company as a part of their request pursuant to Section 2(a) above,
and the Company shall include such information in the written notice referred to
in clause (x) of Section  2(a)  above.  In such  event,  the  Holder's  right to
include its Registrable  Stock in such  registration  shall be conditioned  upon
such Holder's  participation in such underwritten  offering and the inclusion of
such  Holder's  Registrable  Stock in the  underwritten  offering  to the extent
provided in this  Section 2. All Holders  proposing  to  distribute  Registrable
Stock  through  such  underwritten  offering  shall  enter into an  underwriting
agreement  in  customary  form  with  the  underwriter  or  underwriters.   Such
underwriter or  underwriters  shall be selected by a majority in interest of the
Requesting  Holders and shall be approved by the Company,  which  approval shall
not be unreasonably  withheld;  provided,  that all of the  representations  and
warranties  by, and the other  agreements on the part of, the Company to and for
the  benefit of such  underwriters  shall also be made to and for the benefit of
such Holders and that any or all of the conditions  precedent to the obligations
of such  underwriters  under such  underwriting  agreement  shall be  conditions
precedent to the  obligations  of such Holders;  and provided  further,  that no
Holder  shall  be  required  to make any  representations  or  warranties  to or
agreements  with the  Company or the  underwriters  other than  representations,
warranties or agreements  regarding such Holder,  the Registrable  Stock of such
Holder  and  such  Holder's  intended  method  of  distribution  and  any  other
representation required by law or reasonably required by the underwriter.

           (c)  Notwithstanding  any other  provision  of this  Section 2 to the
contrary,  if  the  managing  underwriter  of an  underwritten  offering  of the
Registrable Stock requested to be registered  pursuant to this Section 2 advises
the Requesting  Holders in writing that in its opinion marketing factors require
a limitation of the number of shares to be underwritten,  the Requesting Holders
shall so advise  all  Holders of  Registrable  Stock  that  would  otherwise  be
underwritten pursuant hereto, and the number of shares of Registrable Stock that
may be included in such underwritten  offering shall be allocated among all such
Holders,   including  the  Requesting  Holders,  in  proportion  (as  nearly  as
practicable) to the amount of Registrable Stock requested to be included in such
registration  by each Holder at the time of filing the  registration  statement;
provided,  that in the  event of such  limitation  of the  number  of  shares of
Registrable  Stock to be  underwritten,  the  Holders  shall be  entitled  to an
additional  demand  registration  pursuant  to this  Section 2. If any Holder of
Registrable Stock disapproves of the terms of the underwriting,  such Holder may
elect to withdraw by written notice to the Company, the managing underwriter and
the Requesting Holders. The securities so withdrawn shall also be withdrawn from
registration.

           (d)  Notwithstanding any provision of this Agreement to the contrary,
the  Company  shall not be required  to effect a  registration  pursuant to this
Section  2 during  the  period  starting  with the  fourteenth  day  immediately
preceding the date of an  anticipated  filing by the Company of, and ending on a
date ninety (90) days following the effective date of, a registration  statement
pertaining to a public  offering of  securities  for the account of the Company;
provided,  that the Company shall  actively  employ in good faith all reasonable
efforts to cause such registration  statement to become effective;  and provided
further,  that the  Company's  estimate of the date of filing such  registration
statement shall be made in good faith.

           (e) The Company  shall be  obligated to effect and pay for a total of
only  four (4)  registrations  pursuant  to this  Section  2,  unless  increased
pursuant  to  Section  2(c)  hereof;  provided,  that a  registration  requested
pursuant  to this  Section  2 shall not be  deemed  to have  been  effected  for
purposes of this Section 2(e), unless (i) it has been declared  effective by the
Commission,  (ii) if it is a shelf  registration,  it has remained effective for
the period set forth in Section 4(b),  (iii) the offering of  Registrable  Stock
pursuant to such  registration  is not subject to any stop order,  injunction or
other  order or  requirement  of the  Commission  (other  than  any such  action
prompted by any act or omission of the  Holders),  and (iv) no limitation of the
number of shares  of  Registrable  Stock to be  underwritten  has been  required
pursuant to Section 2(c) hereof.

           3.  Incidental  Registration.  If at any time the Company  determines
that it shall file a  registration  statement  under the 1933 Act (other  than a
registration  statement  on a Form  S-4 or S-8 or filed  in  connection  with an
exchange  offer or an offering of securities  solely to the  Company's  existing
stockholders)  on any form  that  would  also  permit  the  registration  of the
Registrable  Stock and such  filing is to be on its  behalf  and/or on behalf of
selling  holders of its  securities for the general  registration  of its common
stock to be sold for cash,  at each such time the Company  shall  promptly  give
each Holder written notice of such determination setting forth the date on which
the Company proposes to file such registration statement, which date shall be no
earlier  than forty (40) days from the date of such notice,  and  advising  each
Holder of its right to have  Registrable  Stock  included in such  registration.
Upon the  written  request of any Holder  received  by the Company no later than
twenty (20) days after the date of the Company's  notice,  the Company shall use
its  best  efforts  to  cause  to be  registered  under  the 1933 Act all of the
Registrable  Stock that each such Holder has so requested to be registered.  If,
in the written opinion of the managing  underwriter or underwriters  (or, in the
case of a  non-underwritten  offering,  in the written  opinion of the placement
agent, or if there is none, the Company), the total amount of such securities to
be so registered,  including  such  Registrable  Stock,  will exceed the maximum
amount  of the  Company's  securities  which  can  be  marketed  (i) at a  price
reasonably related to the then current market value of such securities,  or (ii)
without otherwise  materially and adversely affecting the entire offering,  then
the amount of Registrable  Stock to be offered for the accounts of Holders shall
be  reduced  pro rata to the  extent  necessary  to reduce  the total  amount of
securities to be included in such offering to the recommended amount;  provided,
that if securities are being offered for the account of other Persons as well as
the Company, such reduction shall not represent a greater fraction of the number
of  securities  intended to be offered by Holders  than the  fraction of similar
reductions  imposed on such other Persons other than the Company over the amount
of securities they intended to offer.

           4. Obligations of the Company.  Whenever  required under Section 2 to
use its best efforts to effect the  registration of any Registrable  Stock,  the
Company shall, as expeditiously as possible:

           (a) prepare and file with the  Commission,  not later than sixty (60)
     days  after  receipt  of a request to file a  registration  statement  with
     respect to such Registrable Stock, a registration statement on any form for
     which the Company  then  qualifies or which  counsel for the Company  shall
     deem  appropriate  and which form shall be  available  for the sale of such
     issue of  Registrable  Stock in  accordance  with the  intended  method  of
     distribution  thereof,  and use its best efforts to cause such registration
     statement  to become  effective  as  promptly  as  practicable  thereafter;
     provided that before filing a  registration  statement or prospectus or any
     amendments  or  supplements  thereto,  the Company  will (i) furnish to one
     counsel  selected by the  Requesting  Holders  copies of all such documents
     proposed  to be filed,  and (ii)  notify each such Holder of any stop order
     issued or  threatened by the  Commission  and take all  reasonable  actions
     required  to  prevent  the  entry of such  stop  order or to  remove  it if
     entered;

           (b)  prepare  and  file  with  the  Commission  such  amendments  and
     supplements  to such  registration  statement  and the  prospectus  used in
     connection  therewith  as  may  be  necessary  to  keep  such  registration
     statement  effective for a period of not less than one hundred twenty (120)
     days or such shorter period which will terminate when all Registrable Stock
     covered by such  registration  statement  has been sold (but not before the
     expiration  of the forty  (40) or ninety  (90) day  period  referred  to in
     Section 4(3) of the 1933 Act and Rule 174 thereunder,  if applicable),  and
     comply with the provisions of the 1933 Act with respect to the  disposition
     of all securities covered by such registration statement during such period
     in  accordance  with the  intended  methods of  disposition  by the sellers
     thereof set forth in such registration statement;

           (c) furnish to each Holder and any  underwriter of Registrable  Stock
     to be  included in a  registration  statement  copies of such  registration
     statement as filed and each amendment and supplement  thereto (in each case
     including  all  exhibits   thereto),   the  prospectus   included  in  such
     registration  statement  (including each  preliminary  prospectus) and such
     other  documents  as  such  Holder  may  reasonably  request  in  order  to
     facilitate the disposition of the Registrable Stock owned by such Holder;

           (d) use its best  efforts to  register  or qualify  such  Registrable
     Stock under such other securities or blue sky laws of such jurisdictions as
     any selling  Holder or any  underwriter  of  Registrable  Stock  reasonably
     requests,  and do any and all other acts which may be reasonably  necessary
     or advisable to enable such Holder to consummate  the  disposition  in such
     jurisdictions of the Registrable Stock owned by such Holder;  provided that
     the Company will not be required to (i) qualify generally to do business in
     any  jurisdiction  where it would not  otherwise be required to qualify but
     for this  paragraph  4(d),  (ii)  subject  itself to  taxation  in any such
     jurisdiction,  or (iii)  consent to general  service of process in any such
     jurisdiction;

           (e) use its best efforts to cause the  Registrable  Stock  covered by
     such registration statement to be registered with or approved by such other
     governmental agencies or other authorities as may be necessary by virtue of
     the business and  operations  of the Company to enable the selling  Holders
     thereof to consummate the disposition of such Registrable Stock;

           (f) notify  each  selling  Holder of such  Registrable  Stock and any
     underwriter  thereof,  at any time when a  prospectus  relating  thereto is
     required to be delivered under the 1933 Act (even if such time is after the
     period  referred to in Section  4(b)),  of the  happening of any event as a
     result of which the  prospectus  included  in such  registration  statement
     contains  an  untrue  statement  of a  material  fact or omits to state any
     material  fact  required  to be stated  therein  or  necessary  to make the
     statements therein in light of the circumstances being made not misleading,
     and prepare a  supplement  or  amendment  to such  prospectus  so that,  as
     thereafter  delivered to the  purchasers of such  Registrable  Stock,  such
     prospectus will not contain an untrue  statement of a material fact or omit
     to state any material  fact  required to be stated  therein or necessary to
     make the statements  therein in light of the  circumstances  being made not
     misleading;

           (g)  make  available  for  inspection  by  any  selling  Holder,  any
     underwriter  participating in any disposition pursuant to such registration
     statement, and any attorney, accountant or other agent retained by any such
     seller or underwriter (collectively,  the "Inspectors"),  all financial and
     other records,  pertinent corporate documents and properties of the Company
     (collectively,  the "Records"), and cause the Company's officers, directors
     and employees to supply all  information  reasonably  requested by any such
     Inspector,  as shall be  reasonably  necessary  to enable  them to exercise
     their due diligence  responsibility,  in connection with such  registration
     statement.  Records or other information which the Company  determines,  in
     good faith,  to be  confidential  and which it notifies the  Inspectors are
     confidential  shall  not be  disclosed  by the  Inspectors  unless  (i) the
     disclosure  of such Records or other  information  is necessary to avoid or
     correct a misstatement or omission in the registration  statement,  or (ii)
     the release of such Records or other  information is ordered  pursuant to a
     subpoena  or other  order  from a court  of  competent  jurisdiction.  Each
     selling  Holder shall,  upon  learning  that  disclosure of such Records or
     other  information  is sought in a court of  competent  jurisdiction,  give
     notice to the Company and allow the Company,  at the Company's expense,  to
     undertake  appropriate action to prevent disclosure of the Records or other
     information deemed confidential;

           (h) furnish,  at the request of any  Requesting  Holder,  on the date
     that such shares of Registrable Stock are delivered to the underwriters for
     sale pursuant to such  registration  or, if such  Registrable  Stock is not
     being  sold  through  underwriters,  on  the  date  that  the  registration
     statement  with  respect  to  such  shares  of  Registrable  Stock  becomes
     effective,  (1) a signed  opinion,  dated such date,  of the legal  counsel
     representing the Company for the purposes of such  registration,  addressed
     to the  underwriters,  if any, and if such  Registrable  Stock is not being
     sold  through  underwriters,  then  to the  Requesting  Holders  as to such
     matters as such underwriters or the Requesting Holders, as the case may be,
     may reasonably request and as would be customary in such a transaction; and
     (2) a letter  dated  such  date,  from  the  independent  certified  public
     accountants of the Company,  addressed to the underwriters,  if any, and if
     such Registrable Stock is not being sold through underwriters,  then to the
     Requesting  Holders and, if such accountants  refuse to deliver such letter
     to such Holder,  then to the Company (i) stating that they are  independent
     certified public  accountants  within the meaning of the 1933 Act and that,
     in the opinion of such  accountants,  the  financial  statements  and other
     financial data of the Company included in the registration statement or the
     prospectus,  or any amendment or supplement  thereto,  comply as to form in
     all material  respects with the applicable  accounting  requirements of the
     1933  Act,  and (ii)  covering  such  other  financial  matters  (including
     information  as to the period  ending not more than five (5) business  days
     prior to the date of such  letter)  with  respect  to the  registration  in
     respect of which such letter is being given as the  Requesting  Holders may
     reasonably request and as would be customary in such a transaction;

           (i) enter  into  customary  agreements  (including  if the  method of
     distribution is by means of an underwriting,  an underwriting  agreement in
     customary  form) and take such other actions as are reasonably  required in
     order to expedite or facilitate the disposition of the Registrable Stock to
     be so included in the registration statement;

           (j)  otherwise  use its best  efforts to comply  with all  applicable
     rules and regulations of the Commission, and make available to its security
     holders,  as soon as  reasonably  practicable,  but not later than eighteen
     (18) months after the  effective  date of the  registration  statement,  an
     earnings  statement  covering  the period of at least  twelve  (12)  months
     beginning  with the  first  full  month  after the  effective  date of such
     registration  statement,   which  earnings  statements  shall  satisfy  the
     provisions of Section 11(a) of the 1933 Act; and

           (k) use its best  efforts to cause all such  Registrable  Stock to be
     listed on the New York Stock Exchange and/or any other securities  exchange
     on which  similar  securities  issued by the  Company are then  listed,  or
     traded  on  the  National   Association  of  Securities  Dealers  Automated
     Quotations  System,  if such listing or trading is then permitted under the
     rules of such exchange or system, respectively.

           The Company may require each selling Holder of  Registrable  Stock as
to which any  registration  is being  effected  to furnish to the  Company  such
information  regarding the distribution of such Registrable Stock as the Company
may from time to time reasonably request in writing.

           Each Holder agrees that,  upon receipt of any notice from the Company
of the happening of any event of the kind described in Section 4(f) hereof, such
Holder will forthwith  discontinue  disposition of Registrable Stock pursuant to
the registration  statement  covering such Registrable Stock until such Holder's
receipt of the copies of the supplemented or amended prospectus  contemplated by
Section  4(f)  hereof,  and,  if so directed  by the  Company,  such Holder will
deliver  to the  Company  (at the  Company's  expense)  all  copies,  other than
permanent  file  copies  then in such  Holder's  possession,  of the  prospectus
covering such  Registrable  Stock current at the time of receipt of such notice.
In the event the Company  shall give any such notice,  the Company  shall extend
the  period  during  which  such  registration  statement  shall  be  maintained
effective  pursuant  to this  Agreement  (including  the period  referred  to in
Section  4(b)) by the number of days  during the period from and  including  the
date of the  giving  of such  notice  pursuant  to  Section  4(f)  hereof to and
including the date when each selling Holder of Registrable Stock covered by such
registration  statement  shall have received the copies of the  supplemented  or
amended prospectus contemplated by Section 4(f) hereof.

           5. Holdback Agreement.

           (a)  Restrictions  on  Public  Sale  by  Holder.  To the  extent  not
inconsistent  with  applicable  law,  each  Holder  whose  Registrable  Stock is
included  in a  registration  statement  agrees not to effect any public sale or
distribution of the issue being registered or a similar security of the Company,
or any securities  convertible  into or  exchangeable  or  exercisable  for such
securities, including a sale pursuant to Rule 144 under the 1933 Act, during the
fourteen (14) days prior to, and during the ninety (90) day period beginning on,
the  effective  date  of  such  registration  statement  (except  as part of the
registration),  if and to the extent  requested  by the Company in the case of a
non-underwritten  public  offering  or if  and to the  extent  requested  by the
managing  underwriter  or  underwriters  in the case of an  underwritten  public
offering.

           (b)  Restrictions  on Public  Sale by the  Company  and  Others.  The
Company  agrees  (i)  not to  effect  any  public  sale or  distribution  of any
securities similar to those being registered, or any securities convertible into
or  exchangeable or exercisable  for such  securities,  during the fourteen (14)
days prior to, and during the ninety (90) day period beginning on, the effective
date of any registration statement in which Holders are participating (except as
part of such registration), if and to the extent requested by the Holders in the
case of a non-underwritten  public offering or if and to the extent requested by
the managing  underwriter or underwriters in the case of an underwritten  public
offering;  and (ii)  that any  agreement  entered  into  after  the date of this
Agreement pursuant to which the Company issues or agrees to issue any securities
convertible into or exchangeable or exercisable for such securities  (other than
pursuant to an effective registration statement) shall contain a provision under
which  holders  of such  securities  agree  not to  effect  any  public  sale or
distribution of any such securities  during the periods  described in (i) above,
in each case including a sale pursuant to Rule 144 under the 1933 Act.

           6. Expenses of Registration. All expenses incurred in connection with
each  registration  pursuant  to Sections 2 and 3 of this  Agreement,  excluding
underwriters' discounts and commissions,  but including, without limitation, all
registration,  filing and  qualification  fees,  word  processing,  duplicating,
printers' and accounting  fees  (including the expenses of any special audits or
"cold  comfort"  letters  required  by  or  incident  to  such  performance  and
compliance), exchange listing fees or National Association of Securities Dealers
fees,  messenger and delivery expenses,  all fees and expenses of complying with
securities or blue sky laws, fees and  disbursements of counsel for the Company,
and the  reasonable  fees and  disbursements  of one (1) counsel for the selling
Holders shall be paid by the Company. The selling Holders shall bear and pay the
underwriting  commissions  and  discounts  applicable to the  Registrable  Stock
offered for their  account in  connection  with any  registrations,  filings and
qualifications made pursuant to this Agreement.

           7. Indemnification and Contribution.

           (a) Indemnification by the Company.  The Company agrees to indemnify,
to the full extent  permitted by law, each Holder,  its officers,  directors and
agents and each Person who controls such Holder  (within the meaning of the 1933
Act) against all losses, claims, damages, liabilities and expenses caused by any
untrue  or  alleged   untrue   statement  of  material  fact  contained  in  any
registration statement,  prospectus or preliminary prospectus or any omission or
alleged  omission to state therein a material fact required to be stated therein
or  necessary  to  make  the  statement  therein  (in  case of a  prospectus  or
preliminary prospectus,  in the light of the circumstances under which they were
made) not  misleading,  except insofar as the same are caused by or contained in
any information  with respect to such Holder furnished in writing to the Company
by such Holder  expressly for use therein or by such Holder's failure to deliver
a copy  of the  registration  statement  or  prospectus  or  any  amendments  or
supplements thereto after the Company's compliance with Section 4(c) hereof. The
Company will also indemnify any  underwriters  of the Registrable  Stock,  their
officers and directors and each Person who controls  such  underwriters  (within
the meaning of the 1933 Act) to the same extent as provided  above with  respect
to the indemnification of the selling Holders.

           (b)  Indemnification by Holders.  In connection with any registration
statement in which a Holder is  participating,  each such Holder will furnish to
the  Company in writing  such  information  with  respect to such  Holder as the
Company  reasonably  requests for use in connection  with any such  registration
statement or prospectus and agrees to indemnify, to the extent permitted by law,
the Company, its directors and officers and each Person who controls the Company
(within  the  meaning of the 1933 Act)  against  any  losses,  claims,  damages,
liabilities and expenses  resulting from any untrue or alleged untrue  statement
of material fact or any omission or alleged omission of a material fact required
to be stated in the registration statement, prospectus or preliminary prospectus
or any  amendment  thereof  or  supplement  thereto  or  necessary  to make  the
statements  therein (in the case of a prospectus or preliminary  prospectus,  in
the light of the  circumstances  under which they were made) not misleading,  to
the extent,  but only to the extent,  that such untrue  statement or omission is
contained in any information with respect to such Holder so furnished in writing
by such Holder. Notwithstanding the foregoing, the liability of each such Holder
under this  Section  7(b) shall be  limited  to an amount  equal to the  initial
public offering price of the Registrable Stock sold by such Holder,  unless such
liability arises out of or is based on willful misconduct of such Holder.

           (c) Conduct of  Indemnification  Proceedings.  Any Person entitled to
indemnification   hereunder   agrees  to  give  prompt  written  notice  to  the
indemnifying party after the receipt by such Person of any written notice of the
commencement of any action, suit,  proceeding or investigation or threat thereof
made in writing for which such Person will claim indemnification or contribution
pursuant  to this  Agreement  and,  unless in the  reasonable  judgment  of such
indemnified  party,  a conflict of interest may exist  between such  indemnified
party  and the  indemnifying  party  with  respect  to such  claim,  permit  the
indemnifying  party to assume the defense of such claims with counsel reasonably
satisfactory to such indemnified  party.  Whether or not such defense is assumed
by the indemnifying  party,  the  indemnifying  party will not be subject to any
liability for any settlement made without its consent (but such consent will not
be unreasonably withheld).  Failure by such Person to provide said notice to the
indemnifying party shall itself not create liability except to the extent of any
injury  caused  thereby.  No  indemnifying  party  will  consent to entry of any
judgment or enter into any settlement which does not include as an unconditional
term thereof the giving by the claimant or plaintiff to such  indemnified  party
of a release from all liability in respect of such claim or  litigation.  If the
indemnifying party is not entitled to, or elects not to, assume the defense of a
claim,  it will not be  obligated  to pay the fees and expenses of more than one
(1) counsel with respect to such claim, unless in the reasonable judgment of any
indemnified  party a conflict of interest  may exist  between  such  indemnified
party and any other such  indemnified  parties  with  respect to such claim,  in
which  event  the  indemnifying  party  shall be  obligated  to pay the fees and
expenses of such additional counsel or counsels.

           (d)  Contribution.  If for any reason the  indemnity  provided for in
this  Section 7 is  unavailable  to, or is  insufficient  to hold  harmless,  an
indemnified  party,  then the indemnifying  party shall contribute to the amount
paid or payable by the  indemnified  party as a result of such  losses,  claims,
damages,  liabilities  or expenses (i) in such  proportion as is  appropriate to
reflect the relative benefits received by the indemnifying party on the one hand
and the indemnified  party on the other,  or (ii) if the allocation  provided by
clause (i) above is not permitted by applicable law, or provides a lesser sum to
the indemnified party than the amount hereinafter calculated, in such proportion
as is  appropriate  to reflect not only the  relative  benefits  received by the
indemnifying  party on the one hand and the  indemnified  party on the other but
also the relative fault of the indemnifying  party and the indemnified  party as
well as any other relevant equitable considerations.  The relative fault of such
indemnifying party and indemnified  parties shall be determined by reference to,
among other  things,  whether any action in  question,  including  any untrue or
alleged untrue  statement of a material fact or omission or alleged  omission to
state a material fact, has been made by, or relates to information  supplied by,
such  indemnifying  party or  indemnified  parties;  and the  parties'  relative
intent,  knowledge,  access to information and opportunity to correct or prevent
such  action.  The amount  paid or payable by a party as a result of the losses,
claims,  damages,  liabilities and expenses referred to above shall be deemed to
include,  subject to the  limitations  set forth in Section  7(c),  any legal or
other fees or expenses  reasonably incurred by such party in connection with any
investigation or proceeding.

           The parties  hereto agree that it would not be just and  equitable if
contribution  pursuant  to  this  Section  7 (d)  were  determined  by pro  rata
allocation or by any other method of  allocation  which does not take account of
the equitable considerations referred to in the immediately preceding paragraph.
No Person guilty of fraudulent  misrepresentation (within the meaning of Section
11(f) of the 1933 Act) shall be entitled to contribution from any Person who was
not guilty of such fraudulent misrepresentation.

           If   indemnification   is   available   under  this  Section  7,  the
indemnifying  parties shall indemnify each indemnified  party to the full extent
provided in Sections 7(a) and (b) without  regard to the relative  fault of said
indemnifying  party or indemnified  party or any other  equitable  consideration
provided for in this Section 7.

           8.  Participation  in  Underwritten  Registrations.   No  Holder  may
participate in any  underwritten  registration  hereunder unless such Holder (a)
agrees  to  sell  such  Holder's   securities  on  the  basis  provided  in  any
underwriting  arrangements approved by the Holders entitled hereunder to approve
such arrangements, and (b) completes and executes all questionnaires,  powers of
attorney,  indemnities,  underwriting  agreements and other documents reasonably
required under the terms of such underwriting arrangements.

           9. Rule 144.  The  Company  covenants  that it will file the  reports
required to be filed by it under the 1933 Act and the Securities Exchange Act of
1934,  as  amended,  and the rules and  regulations  adopted  by the  Commission
thereunder;  and it will take such further  action as any Holder may  reasonably
request,  all to the extent  required from time to time to enable such Holder to
sell  Registrable  Stock  without  registration  under the 1933 Act  within  the
limitation  of the  exemptions  provided  by (a) Rule 144 under the 1933 Act, as
such  Rule  may be  amended  from  time  to  time,  or (b) any  similar  rule or
regulation hereafter adopted by the Commission.  Upon the request of any Holder,
the Company will deliver to such Holder a written statement as to whether it has
complied with such requirements.

           10. Transfer of Registration  Rights. The registration  rights of any
Holder  under  this  Agreement  with  respect to any  Registerable  stock may be
transferred  to any  transferee of such  Registrable  Stock;  provided that such
transfer may  otherwise be effected in  accordance  with  applicable  securities
laws;  provided  further,  that the  transferring  Holder shall give the Company
written  notice at or prior to the time of such  transfer  stating  the name and
address of the transferee and  identifying  the securities with respect to which
the rights under this Agreement are being  transferred;  provided further,  that
such transferee  shall agree in writing,  in form and substance  satisfactory to
the Company,  to be bound as a Holder by the provisions of this  Agreement;  and
provided  further,  that such assignment  shall be effective only if immediately
following  such  transfer the further  disposition  of such  securities  by such
transferee is restricted under the 1933 Act. Except as set forth in this Section
10, no transfer of Registrable  Stock shall cause such Registrable Stock to lose
such status.

           11. Miscellaneous.

           (a) No Inconsistent Agreements.  The Company will not hereafter enter
into any agreement with respect to its securities which is inconsistent with the
rights  granted to the Holders in this  Agreement.  Except for the  Registration
Rights  Agreement  by and between the Company and Pesa dated  December 27, 1991,
the Company has not previously entered into any agreement with respect to any of
its  securities  granting  any  registration  rights to any  Person,  other than
agreements  which by reason of lapse of time do not  require  the  Company  as a
practical matter to register any securities for any Person.

           (b) Remedies.  Each Holder, in addition to being entitled to exercise
all rights granted by law,  including  recovery of damages,  will be entitled to
specific performance of its rights under this Agreement. The Company agrees that
monetary  damages  would not be adequate  compensation  for any loss incurred by
reason of a breach by it of the  provisions of this  Agreement and hereby agrees
to waive (to the extent permitted by law) the defense in any action for specific
performance that a remedy of law would be adequate.

           (c) Amendments and Waivers.  The provisions of this Agreement may not
be amended, modified or supplemented, and waivers or consents to departures from
the  provisions  hereof may not be given  unless the  Company has  obtained  the
written consent of the Holders of at least a majority of the  Registrable  Stock
then outstanding affected by such amendment, modification, supplement, waiver or
departure.

           (d) Successors and Assigns.  Except as otherwise  expressly  provided
herein, the terms and conditions of this Agreement shall inure to the benefit of
and be binding upon the respective successors and assigns of the parties hereto.
Nothing in this Agreement,,  express or implied,  is intended to confer upon any
Person other than the parties hereto or their respective  successors and assigns
any rights,  remedies,  obligations,  or liabilities  under or by reason of this
Agreement, except as expressly provided in this Agreement.

           (e) Governing Law. This Agreement  shall be governed by and construed
in  accordance  with the internal  laws of the State of New York  applicable  to
contracts made and to be performed  wholly within that state,  without regard to
the conflict of law rules thereof.

           (f)  Counterparts.  This  Agreement  may be  executed  in two or more
counterparts,  each of  which  shall be  deemed  an  original,  but all of which
together shall constitute one and the same instrument.

           (g) Headings. The headings in this Agreement are used for convenience
of reference  only and are not to be considered  in  construing or  interpreting
this Agreement.

           (h) Notices.  Any notice  required or permitted  under this Agreement
shall be given in writing and shall be  delivered in person or by telecopy or by
air courier guaranteeing no later than second business day delivery, directed to
(a) the Company at the address set forth below its signature  hereof or (b) to a
Holder at the address therefor as set forth in the Company's records.  Any party
may change its address for notice by giving 10 days  advance  written  notice to
the other parties. Every notice or other communication hereunder shall be deemed
to have been duly given or served on the date on which personally delivered,  or
on the date actually received, if sent by telecopy or overnight courier service,
with receipt acknowledged.

           (i) Severability. In the event that any one or more of the provisions
contained  herein,  or the  application  thereof in any  circumstances,  is held
invalid,  illegal or unenforceable in any respect for any reason,  the validity,
legality and  enforceability of any such provision in every other respect and of
the  remaining  provisions  contained  herein  shall not be in any way  impaired
thereby,  it being intended that all of the rights and privileges of the Holders
shall be enforceable to the fullest extent permitted by law.

           (j) Entire Agreement.  This Agreement is intended by the parties as a
final  expression of their agreement and intended to be a complete and exclusive
statement of the agreement and understanding of the parties hereto in respect of
the  subject  matter  contained  herein.  There are no  restrictions,  promises,
warranties  or  undertakings  other than those set forth or  referred to herein.
This Agreement  supersedes all prior agreements and  understandings  between the
parties with respect to such subject matter.

           (k)  Attorneys'  Fees. In an action or proceeding  brought to enforce
any provision of this Agreement where any provision  hereof is validly  asserted
as a defense,  the  successful  party shall be  entitled  to recover  reasonable
attorneys' fees in addition to any other available remedy.

           (l)  Enforceability.  This  Agreement  shall remain in full force and
effect  notwithstanding  any breach or purported  breach of, or relating to, the
Stock Purchase Agreement.

           IN WITNESS  WHEREOF,  the parties hereto have executed this Agreement
as of the date first above written.

                                   CHYRON CORPORATION,

                                   By:s/ John A. Servizio
                                      Name: John A. Servizio
                                      Title: CEO

                                   5 Hub Drive
                                   Melville, New York 11087
                                   Attention: Secretary

                                   CC ACQUISITION COMPANY A, L.L.C.

                                   By:s/ Michael Wellesley-Wesley
                                      Name: Michael Wellesley-Wesley
                                      Title: Vice President

                                   CC ACQUISITION COMPANY B, L.L.C.

                                   By:s/ Michael Wellesley-Wesley
                                      Name: Michael Wellesley-Wesley
                                      Title: Vice President

                                   WPG CORPORATE DEVELOPMENT
                                    ASSOCIATES IV, L.P.

                                   By:  WPG PRIVATE EQUITY PARTNERS,
                                        L.P., its general partner


                                   By:s/ Wesley W. Lang, Jr.
                                      Name: Wesley W. Lang, Jr.
                                      Title: General Partner

                                   WPG CORPORATE DEVELOPMENT ASSOCIATES
                                    IV (OVERSEAS), L.P.

                                   By:  WPG CDA IV (OVERSEAS), LTD.,
                                        its general partner

                                   By:s/ Wesley W. Lang, Jr.
                                      Name: Wesley W. Lang, Jr.
                                      Title: Director

                                   WPG ENTERPRISE FUND II, L.P.

                                   By:  WPG VENTURE PARTNERS III,
                                        L.P., its general partner


                                   By:s/ Philip Greer
                                      Name: Philip Greer
                                      Title: General Partner

                                   WEISS, PECK & GREER VENTURE
                                    ASSOCIATES III, L.P.

                                   By:  WPG VENTURE PARTNERS III,
                                        L.P., its general partner

                                   By:s/ Philip Greer
                                      Name: Philip Greer
                                      Title: General Partner


                                   WESTPOOL INVESTMENT TRUST PLC

                                    By:s/ Wesley W. Lang, Jr.
                                      Name: Wesley W. Lang, Jr.
                                      Title: Attorney-in-Fact

                                    LION INVESTMENTS LIMITED

                                    By:s/ Wesley W. Lang, Jr.
                                      Name: Wesley W. Lang, Jr.
                                      Title: Attorney-in-Fact

                                    s/ Charles M. Diker
                                    CHARLES M. DIKER


                                    MINT HOUSE NOMINEES LIMITED

                                    By:s/ Michael Wellesley-Wesley
                                      Name: Michael Wellesly-Wesley
                                      Title: Attorney-in-Fact

                                    PINE STREET VENTURES, L.L.C.

                                    By:s/ Michael Wellesly-Wesley
                                      Name: Michael Wellesly-Wesley
                                      Title: Attorney-in-Fact

                                    Michael Wellesly-Wesley  Attorney-in-Fact
                                    ISAAC HERSLY

                                    Michael Wellesley-Wesley Attorney-in-Fact
                                    ALAN I. ANNEX

                                    Michael Wellesley-Wesley Attorney-in-Fact
                                    ILAN KAUFTHAL


                                    Z FOUR PARTNERS L.L.C.

                                By: s/ Michael Wellesly-Wesley Attorney-in-Fact
                                      Name: Michael Wellesly-Wesley
                                      Title: Attorney-in-Fact

                                    s/ Michael Wellesly-Wesley Attorney-in-Fact
                                    A.J.L. BEARE




                                                                       Exhibit F

                                ESCROW AGREEMENT

          THIS ESCROW AGREEMENT, dated as of July 25, 1995 ("Escrow Agreement"),
is by and among Pesa,  Inc., a Delaware  corporation  ("PESA");  CC  Acquisition
Company B, L.L.C., a Delaware limited liability company ("CCACB"),  on behalf of
CCACB and the  parties  listed on Schedule A hereto  (the  "CCACB  Group"),  WPG
Corporate  Development  Associates  IV,  L.P.,  a Delaware  limited  partnership
("WPG"),  and the parties  listed on Schedule B hereto  (the "WPG  Group"),  and
First Union National Bank of North Carolina, a national banking association,  as
Escrow Agent hereunder  ("Escrow Agent").  CCACB, the parties listed on Schedule
A, WPG, and the parties listed on Schedule B are collectively referred to as the
"Purchasers".



                                   BACKGROUND

          A.  PESA,  CC  Acquisition  Company  A,  L.L.C.,  a  Delaware  limited
liability  company  ("CCACA"),  and CCACB  have  entered  into a Stock  Purchase
Agreement (the "Underlying  Agreement"),  dated as of May 26, 1995,  pursuant to
which CCACA and CCACB will acquire  common stock,  par value $.01 per share (the
"Common  Stock") of Chyron  Corporation  (the  "Company").  CCACB has assigned a
portion of its rights to the other  Purchasers.  On the Closing Date, PESA shall
deliver to the Purchasers stock certificates  representing  29,414,732 shares of
Common Stock (the  "Acquisition  Shares").  On the Closing Date,  the Purchasers
shall deposit such Acquisition Shares with the Escrow Agent.


          B.  Escrow  Agent has  agreed to  accept,  hold,  and  distribute  the
Escrowed Property  deposited with it and any dividends or distributions  thereon
in accordance with the terms of this Escrow Agreement.


          C. PESA and the Purchasers have each appointed the Representatives (as
defined  below)  to  represent  them for all  purposes  in  connection  with the
Escrowed Property, as defined below, to be deposited with Escrow Agent.


          D. In order to establish  the escrow of the  Escrowed  Property and to
effect the  provisions  of the  Underlying  Agreement,  the parties  hereto have
entered into this Escrow Agreement.


                             STATEMENT OF AGREEMENT

          NOW THEREFORE,  for good and valuable  consideration,  the receipt and
sufficiency  of  which  are  hereby   acknowledged,   the  parties  hereto,  for
themselves, their successors and assigns, hereby agree as follows:

           1. Definitions. The following terms shall have the following meanings
when used herein:
          
           "CCACB Representative" shall mean Michael  Wellesley-Wesley or Daniel
     DeWolf,  severally,  or any other person  designated in a writing signed by
     CCACB and delivered to the Escrow Agent,  the PESA  Representative  and the
     WPG  Representative in accordance with the notice provisions of this Escrow
     Agreement,  to act as CCACB's and the CCACB  Group's  representative  under
     this Escrow Agreement.

           "Escrowed  Property"  shall mean (i) the  Acquisition  Shares and the
     stock  certificates  representing  the  Acquisition  Shares  deposited with
     Escrow Agent  pursuant to this  Agreement,  together with any dividends and
     other income or distributions  thereon,  and (ii) the payments provided for
     in Section 1.1(c)(ii) of the Underlying Agreement deposited with the Escrow
     Agent pursuant to this Agreement.

           "Escrow  Period" shall mean the period  commencing on the date hereof
     and ending on the date all Escrowed Property is delivered out of Escrow.

           "Joint Written  Direction" shall mean a written direction executed by
     the Representatives and directing Escrow Agent to disburse all or a portion
     of the  Escrowed  Property  or to take or  refrain  from  taking  an action
     pursuant to this Escrow Agreement.

           "PESA  Escrow  Account"  shall  mean the PESA,  Inc.  Escrow  Account
     established at the PESA Escrow Agent  pursuant to the escrow  agreements by
     and among  PESA,  the PESA Escrow  Agent and each of  Dresdner  Bank AG and
     Extebank, of even dates herewith.

           "PESA Escrow Agent" shall mean Banco Santander Puerto Rico, New York.

           "PESA Representative" shall mean Miguel S. Moraga or Eduardo Perez de
     Villages,  severally, or any other person designated in a writing signed by
     PESA and delivered to the Escrow Agent,  CCACB  Representative  and the WPG
     Representative  in  accordance  with the notice  provisions  of this Escrow
     Agreement, to act as PESA's Representative under this Escrow Agreement.

           "Representatives"  shall  mean the  PESA  Representative,  the  CCACB
     Representative and the WPG Representative.

           "WPG  Representative"  shall  mean WPG or any other  person or entity
     designated  in a writing  signed by WPG and  delivered to the Escrow Agent,
     the Pesa Representative and the CCACB Representative in accordance with the
     notice  provisions  of this  Escrow  Agreement,  to act as the WPG  Group's
     representative under this Escrow Agreement.

           2.  Appointment  of  and  Acceptance  by  Escrow  Agent.   PESA,  the
Purchasers,  and the Representatives on behalf of PESA and the Purchasers hereby
appoint Escrow Agent as escrow agent hereunder. Escrow Agent hereby accepts such
appointment  and,  upon  receipt of the  Escrowed  Property in  accordance  with
Section  3 below,  agrees  to hold  and  distribute  the  Escrowed  Property  in
accordance with this Escrow Agreement.

           3. Deposit of Escrowed Property.

           (a) On the date hereof,  the Purchasers shall deposit with the Escrow
Agent a stock certificate or stock certificates  representing  29,414,732 shares
of Common Stock of the Company, duly endorsed in blank or accompanied with stock
powers  duly  endorsed  in blank.  Until  delivered  out of escrow,  each of the
Purchasers shall retain its respective right to vote its Acquisition  Shares and
to any dividend rights related thereto.

           (b) The Escrow Agent acknowledges  receipt of the Acquisition Shares,
and will hold such Escrowed Property safely in a segregated account.

           (c) Notwithstanding  Section 1.1(c)(ii) of the Underlying  Agreement,
the parties hereto agree that the payments  described  therein will be deposited
(pursuant  to the  schedule  of  installments  therein)  with the Escrow  Agent,
instead of being paid directly to PESA.

           4. Disbursement of Escrowed Property.  The Escrowed Property shall be
disbursed and distributed as follows:

           (a) For each  $1,000  paid by a Purchaser  to the Escrow  Agent,  the
     Escrow Agent shall promptly deliver (i) to such Purchaser 2,083 Acquisition
     Shares  and  (ii)  to the  PESA  Escrow  Account  said  funds  paid by such
     Purchaser.  Simultaneously  with any payment to the Escrow Agent, the CCACB
     Representative  and the WPG  Representative  shall  deliver a notice to the
     Escrow Agent specifying to which of the Purchasers such Acquisition  Shares
     shall be released with a copy of such notice to the PESA Representative.

           (b) Within five (5) business days after receipt of an affidavit  from
     the PESA  Representative  stating  that (i)  there has  occurred  a payment
     default pursuant to Section  1.1(c)(iv) of the Underlying  Agreement,  (ii)
     that the thirty (30) day cure period specified in Section 1.1(c)(iv) of the
     Underlying  Agreement  has expired  without such default  being cured,  and
     (iii) the dollar  amount of the default,  the Escrow  Agent shall  promptly
     deliver to the PESA Escrow  Account  2,083  Acquisition  Shares (with their
     attached  stock  powers in blank) for each  unpaid  $1,000 of said  noticed
     defaulted payment.  The PESA Representative  shall also send a copy of such
     affidavit to the CCACB Representative and the WPG Representative.

           (c) The Escrow  Agent  shall,  at any time,  deliver such part of the
     Escrowed  Property as shall be set forth in an affidavit signed by the PESA
     Escrow Agent, the CCACB Representative and the WPG Representative.

           (d) The Escrow  Agent  shall,  at any time,  deliver such part of the
     Escrowed  Property as shall be set forth in any order,  decree, or judgment
     of a court of competent  jurisdiction  which has been  finally  affirmed on
     appeal or which, by lapse of time or otherwise, is not subject to appeal.

           All  distributions  of the Escrowed  Property shall be subject to the
claims of Escrow Agent and the  Indemnified  Parties (as defined below) pursuant
to Section 9 below.


           5.  Delivery  Into  Court.  If, at any time,  there  shall  exist any
dispute between PESA, the Purchasers, or the Representatives with respect to the
holding or  disposition  of any  portion of the  Escrowed  Property or any other
obligations  of Escrow  Agent  hereunder,  or if at any time the Escrow Agent is
unable to determine, to Escrow Agent's sole satisfaction, the proper disposition
of any portion of the Escrowed  Property or Escrow  Agent's  proper actions with
respect to its obligations hereunder, or if the Representatives have not, within
thirty (30) days of the  furnishing  by Escrow Agent of a notice of  resignation
pursuant  to  Section  7  hereof,  appointed  a  successor  Escrow  Agent to act
hereunder, then Escrow Agent may, in its sole discretion, take either or both or
the following actions:

           (a)  suspend the  performance  of any of its  obligations  under this
     Escrow Agreement until such dispute or uncertainty shall be resolved to the
     sole  satisfaction of Escrow Agent or until a successor  Escrow Agent shall
     have been appointed (as the case may be);  provided,  however,  that Escrow
     Agent shall continue to hold the Escrowed Property safely until directed as
     to distribution by the court; and/or

           (b)  petition  (by  means  of an  interpleader  action  or any  other
     appropriate  method) any court of competent  jurisdiction  in New York, New
     York, for  instructions  with respect to such dispute or  uncertainty,  and
     disposition in accordance with the instructions of such court.

           The Escrow  Agent shall have no liability  to PESA,  the  Purchasers,
their  respective  shareholders  or any other  person  with  respect to any such
suspension  of  performance  or  disbursement   or   distribution   into  court,
specifically  including any liability or claimed liability that may arise, or be
alleged to have  arisen,  out of or as a result of any delay in the  delivery of
the  Escrowed  Property  or any delay in or with  respect  to any  other  action
required or requested of Escrow Agent.

           6. Intentionally Deleted.

           7.  Resignation and Removal of Escrow Agent.  Escrow Agent may resign
from the performance of its duties hereunder at any time by giving ten (10) days
prior written notice to the  Representatives or may be removed,  with or without
cause,  by the  Representatives,  acting  jointly by  furnishing a Joint Written
Direction  to Escrow  Agent,  at any time by the  giving of ten (10) days  prior
written  notice to Escrow Agent.  Such  resignation or removal shall take effect
upon the appointment of a successor Escrow Agent as provided  hereinbelow.  Upon
any such notice of resignation  or removal,  the  Representatives  jointly shall
appoint a successor  Escrow  Agent  hereunder,  which  shall be a United  States
commercial bank, trust company,  or other financial  institution with a combined
capital and surplus in excess of $10,000,000 and not affiliated with PESA or the
Purchasers.  Upon the  acceptance in writing of any  appointment as Escrow Agent
hereunder  by a  successor  Escrow  Agent,  such  successor  Escrow  Agent shall
thereupon succeed to and become vested with all the rights,  powers,  privileges
and duties of the retiring Escrow Agent,  and the retiring Escrow Agent shall be
discharged  from its duties and  obligations  under this Escrow  Agreement,  but
shall not be  discharged  from any  liability  for actions taken as Escrow Agent
hereunder  prior  to  such   succession.   After  any  retiring  Escrow  Agent's
resignation or removal,  the provisions of this Escrow  Agreement shall inure to
its  benefit as to any  actions  taken or omitted to be taken by it while it was
Escrow Agent under this Escrow Agreement.

           8. Liability of Escrow Agent. Escrow Agent shall have no liability or
obligation  with  respect to the  Escrowed  Property  except for Escrow  Agent's
willful misconduct or gross negligence. Escrow Agent's sole responsibility shall
be for the safekeeping and  distribution of the Escrowed  Property in accordance
with the terms of this  Escrow  Agreement.  Escrow  Agent  shall have no implied
duties or  obligations  and shall not be charged with knowledge or notice of any
fact or circumstance not  specifically  set forth herein.  Escrow Agent may rely
upon  any  instrument,   not  only  as  to  its  due  execution,   validity  and
effectiveness,  but  also  as to the  truth  and  accuracy  of  any  information
contained  therein,  which  Escrow  Agent  shall,  in good faith,  believe to be
genuine, to have been signed or presented by the person or parties purporting to
sign the same, and to conform to the provisions of this Escrow Agreement.  In no
event  shall  Escrow  Agent  be  liable  for   incidental   indirect,   special,
consequential or punitive  damages.  Escrow Agent shall not be obligated to take
any legal  action or commence any  proceeding  in  connection  with the Escrowed
Property,  this Escrow Agreement,  or the Underlying Agreement, or to appear in,
prosecute  or defend  any such  legal  action or  proceeding.  Escrow  Agent may
consult legal counsel  selected by it in the event of any dispute or question as
to the construction of any of the provisions hereof or of any other agreement or
of its  duties  hereunder,  and  shall  incur no  liability  and  shall be fully
protected from any liability whatsoever in acting in accordance with the opinion
or  instruction of such counsel.  PESA,  CCACB,  and the WPG Group,  jointly and
severally,  shall promptly pay, upon demand, the reasonable fees and expenses of
any such counsel.  The parties  agree that the payment by Pesa or CCACB,  or the
WPG Group for the  reasonable  fees and  expenses  of the Escrow  Agent's  legal
counsel hereunder shall not impair,  limit,  modify,  or affect,  the respective
rights and  obligations  as  between  PESA,  CCACB,  the WPG Group and the other
Purchasers and the respective  rights of each of PESA,  CCACB, and the WPG Group
and the other Purchasers as against each other.

           9.  Indemnification  of Escrow Agent. From and at all times after the
date of this  Escrow  Agreement,  PESA,  CCACB,  and the WPG Group  jointly  and
severally,  shall,  to the  fullest  extent  permitted  by law and to the extent
provided  herein,  indemnify and hold harmless  Escrow Agent and each  director,
officer, employee,  attorney, agent and affiliate of Escrow Agent (collectively,
the "Indemnified Parties") against any and all actions,  (whether or not valid),
losses,  damages,  liabilities,  costs  and  expenses  of  any  kind  or  nature
whatsoever (including, without limitation, reasonable attorneys' fees, costs and
expenses)  incurred by or asserted  against any of the Indemnified  Parties from
and after the date hereof, whether direct, indirect or consequential as a result
of or arising from or in any way relating to any claim,  demand, suit, action or
proceeding  (including  any inquiry or  investigation)  by any  person,  whether
threatened  or  initiated,  asserting a claim for any legal or equitable  remedy
against any person under any statute or regulation,  including,  but not limited
to, any federal or state  securities  laws, or under any common law or equitable
cause  or  otherwise)  arising  from  or in  connection  with  the  negotiation,
preparation,  execution,  performance  or failure of  performance of this Escrow
Agreement  or any  transactions  contemplated  herein,  whether  or not any such
Indemnified Party is a party to any such action, proceeding,  suit or the target
of any such inquiry or  investigation;  provided,  however,  that no Indemnified
Party shall have the right to be indemnified hereunder for any liability finally
determined by a court of competent  jurisdiction,  subject to no further appeal,
to have resulted solely from the gross negligence or willful  misconduct of such
Indemnified  Party.  If any such  action or claim  shall be brought or  asserted
against any  Indemnified  Party,  such  Indemnified  Party shall promptly notify
PESA,  CCACB, and the WPG Group in writing,  and PESA,  CCACB, and the WPG Group
shall assume the defense  thereof,  including the  employment of counsel and the
payment of all expenses.  Such Indemnified  Party shall, in its sole discretion,
have the right to employ separate  counsel in any such action and to participate
in the defense thereof,  and the fees and expenses of such counsel shall be paid
by such  Indemnified  Party  unless (a) PESA and/or  CCACB  and/or the WPG Group
agree to pay such fees and  expenses,  or (b) PESA and/or  CCACB  and/or the WPG
Group  shall fail to assume the defense of such  action or  proceeding  or shall
fail, in the reasonable  discretion of such Indemnified Party, to employ counsel
satisfactory to the Indemnified  Party in any such action or proceeding,  or (c)
the named  parties to any such action or  proceeding  (including  any  impleaded
parties)  include  both  Indemnified  Party and PESA and/or CCACB and/or the WPG
Group,  and Indemnified  Party shall have been advised by counsel that there may
be one or more  legal  defenses  available  to it which  are  different  from or
additional to those  available to PESA or CCACB or the WPG Group.  All such fees
and expenses  payable by PESA and/or CCACB and/or the WPG Group  pursuant to the
foregoing sentence shall be paid from time to time as incurred,  both in advance
of and after the final disposition of such action or claim. All of the foregoing
losses,  damages, costs and expenses of the Indemnified Parties shall be payable
by PESA and CCACB and the WPG Group, jointly and severally,  upon demand by such
Indemnified  Party.  The  obligations  of PESA and CCACB and the WPG Group under
this Section 9 shall survive any  termination  of this Escrow  Agreement and the
resignation or removal of Escrow Agent.

          The  parties  agree that the payment by PESA or CCACB or the WPG Group
of any claim by Escrow Agent for indemnification hereunder in respect of a claim
by Escrow Agent for indemnification  shall not impair, limit, modify, or affect,
the respective rights and obligations as between PESA, CCACB, the WPG Group, and
the other Purchasers and the respective  rights of each of PESA,  CCACB, the WPG
Group and the other Purchasers as against each other.

           10. Fees and Expenses of Escrow Agent.  PESA, CCACB and the WPG Group
shall  compensate  Escrow Agent for its services  hereunder in  accordance  with
Schedule C attached  hereto,  except that the WPG Group shall not be responsible
for any payments due at Closing as defined in the  Underlying  Agreement.  PESA,
CCACB and the WPG Group shall  reimburse  Escrow Agent for all of its reasonable
out-of-pocket  expenses,  including attorneys' fees, travel expenses,  telephone
and facsimile  transmission costs, postage (including express mail and overnight
delivery  charges),  copying charges and the like. All of the  compensation  and
reimbursement obligations set forth in this Section 10 shall be payable by PESA,
CCACB and the WPG Group, jointly and severally, upon demand by Escrow Agent. The
obligations of PESA, CCACB and the WPG Group under this Section 10 shall survive
any  termination  of this Escrow  Agreement  and the  resignation  or removal of
Escrow Agent.

           11. Representations and Warranties.

           (a) PESA makes the following representations and warranties to Escrow
Agent:

           (i) PESA is a corporation duly organized,  validly  existing,  and in
     good standing  under the laws of the State of Delaware,  and has full power
     and  authority to execute and deliver this Escrow  Agreement and to perform
     its obligations hereunder.

           (ii) This Escrow  Agreement  has been duly  approved by all necessary
     corporate action of PESA, including any necessary shareholder approval, has
     been executed by duly authorized  officers of PESA, and constitutes a valid
     and binding agreement of PESA,  enforceable against PESA in accordance with
     its terms.

           (iii) The execution, delivery, and performance by PESA of this Escrow
     Agreement  is in  accordance  with the  Underlying  Agreement  and will not
     violate,   conflict  with,  or  cause  a  default  under  the  articles  of
     incorporation  or bylaws of PESA, any  applicable  law or  regulation,  any
     court order or administrative ruling or decree to which PESA is a party, or
     any of its property is subject, or any agreement,  contract,  indenture, or
     other binding arrangement,  including,  without limitation,  the Underlying
     Agreement, to which PESA is a party or any of its property is subject.

          (iv)  Each  of  Miguel  S.  Moraga  and  Eduardo  Perez  de  Villages,
     severally,  has been duly  appointed to act as the  representative  of PESA
     hereunder and has full power and authority to execute, deliver, and perform
     this Escrow  Agreement,  to execute and deliver any joint written direction
     or affidavit, to amend, modify or waive any provision of this Agreement and
     to take any and all other  actions  as the PESA  Representative  under this
     Agreement,  all without  further  consent or direction  from, or notice to,
     PESA or any other party.

          (v) No party other than the parties  hereto have,  or shall have,  any
     lien,  claim or  security  interest  in the  Escrowed  Property or any part
     thereof.  No financing  statement  under the Uniform  Commercial Code is on
     file in any  jurisdiction  claiming a security  interest  in or  describing
     (whether  specifically  or  generally)  the  Escrowed  Property or any part
     thereof.

           (b) CCACB  makes the  following  representations  and  warranties  to
Escrow Agent:

          (i) CCACB is a  limited  liability  company  duly  organized,  validly
     existing, and in good standing under the laws of the State of Delaware, and
     has full power and  authority to execute and deliver this Escrow  Agreement
     and to perform its obligations hereunder.

          (ii) This Escrow  Agreement  has been duly  approved by all  necessary
     action of CCACB, including any necessary member approval, has been executed
     by duly authorized  officers of CCACB,  and constitutes a valid and binding
     agreement of CCACB, enforceable against CCACB in accordance with its terms.
          
           (iii)  The  execution,  delivery,  and  performance  by CCACB of this
     Escrow  Agreement is in accordance  with the Underlying  Agreement and will
     not violate,  conflict with, or cause a default under the charter documents
     of  CCACB,   any  applicable   law  or  regulation,   any  court  order  or
     administrative  ruling or  decree  to which  CCACB is a party or any of its
     property  is  subject,  or any  agreement,  contract,  indenture,  or other
     binding  arrangement,   including,   without  limitation,   the  Underlying
     Agreement, to which CCACB is a party or any of its property is subject.

          (iv) Each of Messrs.  Wellesley-Wesley and DeWolf, severally, has been
     duly appointed to act as the  representative  of the CCACB Group  hereunder
     and has full power and  authority  to execute,  deliver,  and perform  this
     Escrow  Agreement,  to execute and deliver any Joint  Written  Direction or
     affidavit, to amend, modify, or waive any provision of this Agreement,  and
     to take any and all other  actions as the CCACB  Representative  under this
     Agreement, all without further consent or direction from, or notice to, the
     CCACB or any other party.

          (v) No party other than the parties  hereto have,  or shall have,  any
     lien,  claim,  or security  interest in the  Escrowed  Property or any part
     thereof.  No financing  statement  under the Uniform  Commercial Code is on
     file in any  jurisdiction  claiming a security  interest  in or  describing
     (whether  specifically  or  generally)  the  Escrowed  Property or any part
     thereof.

          (c) The WPG Group makes the following  representations  and warranties
to Escrow Agent:

          (i) WPG is a limited partnership duly organized, validly existing, and
     in good  standing  under  the laws of the State of  Delaware,  and has full
     power and  authority  to execute and deliver this Escrow  Agreement  and to
     perform its obligations hereunder.

          (ii) This Escrow  Agreement  has been duly  approved by all  necessary
     action of WPG,  including  any  necessary  partnership  approval,  has been
     executed by duly  authorized  officers of WPG, and  constitutes a valid and
     binding  agreement of WPG,  enforceable  against WPG in accordance with its
     terms.

          (iii) The execution,  delivery,  and performance by WPG of this Escrow
     Agreement  will not violate,  conflict  with,  or cause a default under its
     partnership agreement, any applicable law or regulation, any court order or
     administrative  ruling  or  decree  to  which  WPG is a party or any of its
     property  is  subject,  or any  agreement,  contract,  indenture,  or other
     binding  arrangement,  to which  WPG is a party or any of its  property  is
     subject.

          (iv) No party other than the parties  hereto have, or shall have,  any
     lien,  claim,  or security  interest in the  Escrowed  Property or any part
     thereof.  No financing  statement  under the Uniform  Commercial Code is on
     file in any  jurisdiction  claiming a security  interest  in or  describing
     (whether  specifically  or  generally)  the  Escrowed  Property or any part
     thereof. 

           12. By  execution  of this Escrow  Agreement,  each member of the WPG
Group appoints WPG to act as the  representative  of the WPG Group hereunder and
WPG has full power and  authority to execute,  deliver,  and perform this Escrow
Agreement,  to execute and deliver any Joint Written Direction or affidavit,  to
amend, modify, or waive any provision of this Agreement, and to take any and all
other  actions as the WPG  Representative  under  this  Agreement,  all  without
further  consent  or  direction  from,  or notice to, the WPG Group or any other
party.

           13. Consent to  Jurisdiction  and Venue.  In the event that any party
hereto commences a lawsuit or other proceeding  relating to or arising from this
Agreement,  the parties  hereto agree that the United States  District Court for
the Southern District of New York shall have the sole and exclusive jurisdiction
over any such proceeding. If such Federal Court lacks jurisdiction,  the parties
agree  that the State  courts in New York  County,  State of New York shall have
sole and exclusive  jurisdiction.  Any of these courts shall be proper venue for
any such  lawsuit  or  judicial  proceeding  and the  parties  hereto  waive any
objection to such venue.  The parties  hereto  consent to and agree to submit to
the  jurisdiction  of any of the  courts  specified  herein  and agree to accept
service  or  process  to vest  personal  jurisdiction  over them in any of these
courts.

           14. Notice. All notices and other  communications  hereunder shall be
in writing and shall be deemed to have been validly  served,  given or delivered
three (3) days after deposit in the United States mails,  by certified mail with
return  receipt  requested and postage  prepaid;  or upon receipt when delivered
personally; and addressed to the party to be notified as follows:

          If to PESA at:

               Pesa Inc.
               35 Pinelawn Road, Suite 99E 
               Melville, New York 11747
               Attention: Miguel S. Moraga

           With a copy (which copy shall not constitute notice) to:

               John C. Jost, Esq.
               Dow, Lohnes & Albertson
               1255 Twenty-third Street, N.W.
               Washington, D.C. 20037


           If to CCACB Group at:

               Michael Wellesley-Wesley
               c/o Camhy Karlinsky & Stein LLP
               1740 Broadway
               New York, New York 10019
               Attention: Daniel DeWolf, Esq.


           with a copy (which copy shall not constitute notice) to:

               Sheldon D. Camhy, Esq.
               Camhy Karlinsky & Stein LLP
               1740 Broadway - 16th Floor
               New York, New York 10019-4315

          If to WPG Group at:

               Wesley W. Lang Jr.
               c/o Weiss, Peck & Greer 
               Private Equity Group 
               One New York Plaza
               New York, New York 10004-1950

          with a copy (which copy shall not constitute notice to:

               Dennis J. Friedman, Esq.
               Chadbourne & Parke
               30 Rockefeller Plaza
               New York, New York 10112-0127

          If to the Escrow Agent at:

               First Union National Bank of
                North Carolina, as Escrow Agent
               Corporate Trust Department
               230 South Tryon Street, 8th Floor
               Charlotte, North Carolina 28288-1179
               Attention: Ted Weiner
               Facsimile Number: (704) 383-7316

or to such other address as each party may designate for itself by like notice.


           15.  Amendment  or Waiver.  This  Escrow  Agreement  may be  changed,
waived, discharged or terminated only by a writing signed by the Representatives
and Escrow Agent. No delay or omission by any party in exercising any right with
respect hereto shall operate as a waiver. A waiver on any one occasion shall not
be  construed  as a bar to, or  waiver  of,  any  right or remedy on any  future
occasion.


           16.  Severability.  To  the  extent  any  provision  of  this  Escrow
Agreement is prohibited by or invalid under applicable law, such provision shall
be  ineffective  to the  extent  of  such  prohibition  or  invalidity,  without
invalidating the remainder of such provision or the remaining provisions of this
Escrow Agreement.


           17.  Governing  Law.  This Escrow  Agreement  shall be construed  and
interpreted  in  accordance  with  the  internal  laws of the  State of New York
without giving effect to the conflict of laws principles thereof.


           18. Entire  Agreement.  This Escrow Agreement  constitutes the entire
agreement   between  the  parties  relating  to  the  holding,   investment  and
disbursement  of the  Escrowed  Property  and sets forth in their  entirety  the
obligations and duties of Escrow Agent with respect to the Escrowed Property.

           19. Binding  Effect.  All of the terms of this Escrow  Agreement,  as
amended from time to time, shall be binding upon, inure to the benefit of and be
enforceable  by the  respective  heirs,  successors  and assigns of PESA and the
Purchasers, the Representatives and Escrow Agent.

           20.  Execution in  Counterparts.  This Escrow Agreement and any joint
written  direction  may be executed in one or more  counterparts,  which when so
executed shall constitute one and the same agreement or direction.

           21.  Termination.  Upon the  delivery  out of escrow of all  Escrowed
Property,  this Escrow  Agreement shall terminate and Escrow Agent shall have no
further obligation or liability whatsoever with respect to this Escrow Agreement
or the Escrowed Property.

           22. Other Actions.  The Escrow Agent and any  stockholder,  director,
officer or employee of the Escrow  Agent may buy,  sell,  and deal in any of the
securities of PESA or the  Purchasers and become  pecuniarily  interested in any
action in which PESA or the Purchasers may be interested,  and contract and lend
money to PESA or the  Purchasers and otherwise act as fully and freely as though
it were not Escrow Agent under this Agreement. Nothing herein shall preclude the
Escrow Agent from acting in any other capacity for PESA or the Purchasers or for
any other entity.

           23. No Consent.  The execution of this Escrow  Agreement shall not be
construed as the consent of PESA to any  assignment  by CCACB of its rights,  or
delegation by CCACB of its duties or liabilities, with respect to the Underlying
Agreement  other than the Assignment  and Assumption  Agreement by and among the
WPG Group and the CCACB Group dated July 25, 1995.

           IN WITNESS  WHEREOF,  the  parties  hereto  have  caused  this Escrow
Agreement to be executed under seal as of the date first above written.

                                    PESA, INC.

                                    By: s/Miguel S. Moraga
                                       Name: Miguel S. Moraga
                                       Title: C.F.O. and Treasurer


                                    CC ACQUISITION COMPANY B, L.L.C.

                                    By: s/M.I. Wellesley-Wesley
                                       Name: M.I. Wellesley-Wesley
                                       Title: Vice President


                                    PESA REPRESENTATIVES

                                    s/Miguel S. Moraga
                                     Name: Miguel S. Moraga

                                     s/Eduardo Perez de Villegas
                                     Name: Eduardo Perez de Villegas


                                    CCACB REPRESENTATIVES

                                    s/M.I. Wellesley-Wesley
                                    Name:  Michael Wellesley-Wesley

                                    s/Daniel DeWolf
                                    Name:  Dan DeWolf



                                    WPG CORPORATE DEVELOPMENT
                                     ASSOCIATES IV, L.P.

                                    By:  WPG PRIVATE EQUITY PARTNERS,
                                         L.P., its general partner


                                    By: s/Wesley W. Lang, Jr.
                                       Name: Wesley W. Lang, Jr.
                                       Title: General Partner


                                    WPG CORPORATE DEVELOPMENT ASSOCIATES
                                     IV (OVERSEAS), L.P.


                                    By:  WPG CDA IV (OVERSEAS), LTD.,
                                         its general partner


                                    By: s/Wesley W. Lang, Jr.
                                       Name: Wesley W. Lang, Jr.
                                       Title: Director


                                    WPG ENTERPRISE FUND II, L.P.

                                    By:  WPG VENTURE PARTNERS III,
                                         L.P., its general partner


                                    By: s/Philip Greer
                                       Name: Philip Greer
                                       Title: General Partner



                                    WEISS, PECK & GREER VENTURE
                                     ASSOCIATES III, L.P.

                                    By:  WPG VENTURE PARTNERS III,
                                         L.P., its general partner


                                    By: s/Philip Greer
                                       Name: Philip Greer
                                       Title: General Partner

                                    WESTPOOL INVESTMENT TRUST PLC


                                    By: s/Wesley W. Lang, Jr.
                                       Name: Wesley W. Lang, Jr.
                                       Title: Attorney-in-Fact


                                    LION INVESTMENTS LIMITED


                                    By: s/Wesley W. Lang, Jr.
                                       Name: Wesley W. Lang, Jr.
                                       Title: Attorney-in-Fact

                                    s/Charles M. Diker
                                    CHARLES M. DIKER

                                    FIRST UNION NATIONAL BANK
                                     OF NORTH CAROLINA, as Escrow Agent


                                     By:s/Roy Davis
                                       Name: Roy Davis
                                       Title: Vice President



<PAGE>



                  
                                   SCHEDULE A



A. ANNEX
A.J.L. BEARE
I. HERSLY
I. KAUFTHAL
MINT HOUSE NOMINEES LIMITED
PINE STREET VENTURES, L.L.C.
Z FOUR PARTNERS L.L.C.


<PAGE>



                                   SCHEDULE B




                    - Weiss, Peck & Greer Venture Associates III, L.P.
                    - WPG Enterprise Fund II, L.P.
                    - WPG Corporate Development Associates, IV, L.P.
                    - WPG Corporate Development Associates IV (Overseas),
                        L.P.
                    - Westpool Investment Trust plc
                    - Lion Investments Limited
                    - Charles M. Diker





<PAGE>


                                   SCHEDULE C

                          Fees Payable to Escrow Agent







<PAGE>

                                   SCHEDULE D

                  [Letterhead of Banco Santander Puerto Rico]

TO WHOM IT MAY CONCERN:

Wire Transfer Information:

Bank Name:         Bankers Trust Co., New York, NY
ABA Number:        021-001033
Favor of:          Banco Santander Puerto Rico
                   New York Branch
Account No.:       04-202-232

For further credit:

Account No.:       300 310 7883  PESA, INC. ESCROW ACCOUNT

Should you have any questions, please do not hesitate to contact our office.

Sincerely,

s/Jorge A. Saavedra
Jorge A. Saavedra
Manager, New York Branch

                                                                       Exhibit G


                            Rule 13d-1(f) AGREEMENT


                  The undersigned persons (together,  the "Reporting  Persons"),
on this 4th day of August, 1995, do hereby agree and consent to the joint filing
on their  behalf  of this  Schedule  13D in  connection  with  their  beneficial
ownership of Common Stock of Chyron Corporation.  This Agreement may be executed
in counterparts.




                           WPG CORPORATE DEVELOPMENT
                              ASSOCIATES IV, L.P.


                              By:      WPG PRIVATE EQUITY PARTNERS,
                                       L.P., its general partner


                                By:  /s/Wesley W. Lang, Jr.  
                                     Name:  Wesley W. Lang, Jr.
                                     Title:  General Partner


                            WPG CORPORATE DEVELOPMENT ASSOCIATES
                               IV (OVERSEAS), L.P.


                              By:      WPG CDA IV (OVERSEAS), LTD.,
                                       its general partner


                                By:  /s/Wesley W. Lang, Jr.  
                                     Name:  Wesley W. Lang, Jr.
                                     Title:  Director


                           WPG ENTERPRISE FUND II, L.P.


                              By:      WPG VENTURE PARTNERS III,
                                       L.P., its general partner


                                By:  /s/ Philip Greer         
                                     Name:  Philip Greer
                                     Title:  General Partner


                           WEISS, PECK & GREER VENTURE
                              ASSOCIATES III, L.P.


                             By:      WPG VENTURE PARTNERS III,
                                      L.P., its general partner


                                By:  /s/ Philip Greer         
                                     Name:  Philip Greer
                                     Title:  General Partner


                           WESTPOOL INVESTMENT TRUST PLC


                              By:  /s/ R.F.J. Spier         
                                   Name:  R.F.J. Spier
                                   Title:  Director


                           LION INVESTMENTS LIMITED


                              By:  /s/ R.F.J. Spier         
                                   Name:  R.F.J. Spier
                                   Title:  Director


                           /s/ Charles M. Diker      
                           CHARLES M. DIKER


                           WPG PRIVATE EQUITY PARTNERS, L.P.


                              By:  /s/Wesley W. Lang, Jr.  
                                   Name:  Wesley W. Lang, Jr.
                                   Title:  General Partner


                           WPG CDA IV (OVERSEAS), L.P.


                              By:  /s/Wesley W. Lang, Jr.  
                                   Name:  Wesley W. Lang, Jr.
                                   Title:  Director


                           WPG PRIVATE EQUITY PARTNERS (OVERSEAS), L.P.


                              By:  /s/Wesley W. Lang, Jr.  
                                   Name:  Wesley W. Lang, Jr.
                                   Title:  Director


                           WPG VENTURE PARTNERS III, L.P.


                              By:  /s/ Philip Greer         
                                   Name:  Philip Greer
                                   Title:  General Partner


                           /s/ Steven N. Hutchinson 
                           STEVEN N. HUTCHINSON


                           /s/Wesley W. Lang, Jr.  
                           WESLEY W. LANG, JR.


                           /s/ Philip Greer         
                           PHILIP GREER


                           /s/ Gill Cogan           
                           GILL COGAN






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