CELGENE CORP /DE/
SC 13D/A, 1997-05-21
INDUSTRIAL ORGANIC CHEMICALS
Previous: TCF FINANCIAL CORP, S-4/A, 1997-05-21
Next: LILLIAN VERNON CORP, 10-K, 1997-05-21



<PAGE>
 
                                                -------------------------------
                                                  OMB APPROVAL                
                                                -------------------------------
                                                  OMB Number:   3235-0145       
                                                  Expires:  December 31, 1997  
                                                  Estimated average burden     
                                                  hours per response.... 14.90
                                                ------------------------------- 
                                           
                                                                                

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

                                 SCHEDULE 13D

                   Under the Securities Exchange Act of 1934
                             (Amendment No. 3)*



                              Celgene Corporation
- --------------------------------------------------------------------------------
                               (Name of Issuer)


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


                                   151020104
        ---------------------------------------------------------------
                                (CUSIP Number)

                              Charles H. Winkler
                          Citadel Limited Partnership
                          225 West Washington Street
                                   Suite 900
                               Chicago, IL 60606
                                (312) 696-2102
- --------------------------------------------------------------------------------
(Name, Address and Telephone Number of Person Authorized to Receive Notices and
                                Communications)

                                 May 14, 1997
        ---------------------------------------------------------------
            (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 [_]. (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.)

* 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 1 of 5 Pages
<PAGE>
 
                                 SCHEDULE 13D
- -----------------------                                  
  CUSIP NO. 151020104                                    
- -----------------------                                  
 
- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSON
 1    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
              Citadel Limited Partnership
              FEIN No:  36-3754834                      
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3
                   
- ------------------------------------------------------------------------------
      SOURCE OF FUNDS*
 4    
              AF
- ------------------------------------------------------------------------------
      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT 
      TO ITEMS 2(d) or 2(E) [_]
 5    
- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 6    
              U.S.
- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     7        As of the date for the filing of this statement,
     NUMBER OF                the reporting person has voting and dispositive
                              power over (i) shares of Series A Preferred Stock
      SHARES                  which are convertible into 557,328 shares of
                              Common Stock, (ii) Warrants exercisable into
   BENEFICIALLY               26,088 shares of Common Stock and (iii) 317,638
                              shares of Common Stock.
     OWNED BY      -----------------------------------------------------------
                          SHARED VOTING POWER
       EACH          8    
                              0                          
    REPORTING                    
                   -----------------------------------------------------------
      PERSON              SOLE DISPOSITIVE POWER
                     9     
       WITH                   See item 7 above.
                         
                   -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
                     10       
                              0             
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11    
           See item 7 above.        
      
- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
12                  
      [_]
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13         4.9% as of the date for the filing of this statement. (Based on  
           10,783,373 shares of Common Stock issued and outstanding as of March
           1, 1997, plus the Common Stock issuable upon the conversion and 
           exercise of the securities referred to in item 7 above.)
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
14
           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 2 of 5 Pages
<PAGE>
 
     This is the third amendment to the Schedule 13D previously filed by the
reporting person with respect to the securities of the issuer set forth on the
cover page hereto (such initial filing, together with any prior amendments
thereto, the "Prior Filing"). This amendment is being filed in order to amend
and restate Item 5 of the Prior Filing in its entirety in connection with the
execution of an agreement between the issuer and certain affiliates of the
reporting person limiting the ability of such affiliates to convert convertible
securities of the issuer into common stock of the issuer. 

Item 5. Interest in Securities of the Issuer

     (a)  By reason of its serving as managing general partner of Nelson and
          trading manager of Olympus, Citadel may be deemed to be the indirect
          beneficial owner of the Convertible Securities, the shares of Common
          Stock into which the Convertible Securities are convertible or
          exercisable, as the case may be, and other shares of Common Stock
          owned by Nelson and Olympus. As of the date for the filing of this
          statement, Nelson and Olympus collectively owned Preferred Stock for
          which they originally paid $2,900,000 ("Preferred Stated Value"),
          Warrants exercisable into 26,088 shares of Common Stock and 317,638
          shares of Common Stock.

          Subject to the restriction set out below, as of any date (a
          "Conversion Date") all or a portion of the Preferred Stock may be
          converted into the number of shares of Common Stock determined by
          adding (i) the quotient determined by dividing the Preferred Stated
          Value of such securities by a conversion price ("Preferred Face CP")
          equal to the lesser of (A) $18.81 and (B) 85% of the average closing
          price (as reported by NASDAQ or such other market or exchange as the
          Common Stock is then traded) of the Issuer's Common Stock for the five
          trading days immediately preceding the Conversion Date and (ii) the
          quotient determined by dividing an amount equal to 4.9% interest on
          the Preferred Stated Value of such securities from the Preferred
          Closing Date by a conversion price ("Preferred Accretion CP") equal to
          the average closing price (as reported by NASDAQ or such other market
          or exchange as the Common Stock is then traded) of the Issuer's Common
          Stock for the 30 calendar days immediately preceding the Conversion
          Date.

          Effective May 14, 1997, each of Nelson and Olympus entered into an
          agreement with the Issuer (the "May Agreement") pursuant to which each
          such party agreed that notwithstanding the conversion rights described
          above, neither Nelson nor Olympus can convert any Preferred Stock if
          such conversion would cause the aggregate number of shares of Common
          Stock beneficially owned by such party and its affiliates to be
          greater than 4.9% of the outstanding shares of the Common Stock
          following such conversion. For purposes of the foregoing sentence, the
          aggregate number of shares of Common Stock beneficially owned by a
          converting party and its affiliates shall include the shares of Common
          Stock issuable upon conversion of the shares of Preferred Stock with
          respect to which the determination is being made, but shall exclude
          the shares of Common Stock which would be issuable upon conversion of
          the remaining, unconverted portion of the Preferred Stock beneficially
          owned by such party and its affiliates. Except as set forth in the
          preceding sentence, for purposes of the agreement, beneficial
          ownership is calculated in accordance with Section 13(d) of the
          Securities Exchange Act of 1934, as amended.

          As a result, (i) if the Company's Common Stock is trading at a price
          less than $20.90, the Preferred Face CP will fluctuate depending upon
          the closing trade price of the Issuer's Common Stock, and (ii) the
          Preferred Accretion CP will fluctuate depending upon the closing trade
          price of the Issuer's Common Stock.

          As a consequence of the fluctuation in the Preferred Face CP and
          Preferred Accretion CP, the number of shares of Common Stock into
          which the Convertible Securities may be converted, and consequently
          the number of shares of such securities which Citadel may be deemed to
          beneficially own, may fluctuate on a daily basis based solely on the
          Common Stock's market price and without any action taken by Citadel,
          Nelson or Olympus. However, pursuant to the May Agreement, Citadel and
          its affiliates are prohibited from effecting any conversion of
          Preferred Stock which would cause Citadel to beneficially own in
          excess of 4.9% of the Issuer's outstanding Common Stock.

          As of the date for the filing of this statement, by virtue of its
          status as the managing general partner of Nelson and the trading
          manager for Olympus, Citadel may be deemed to be the beneficial owner
          of 528,385 shares of Common Stock representing 4.9% of the Issuer's
          Common Stock (based on (i) 10,783,373 shares of Common Stock issued
          and outstanding as reported by the Issuer as of March 1, 1997 in its
          most recent Form 10-K and (ii) a Preferred Face CP of $5.4723).

     (b)  Citadel has the sole power to vote and the sole power to dispose of
          the Convertible Securities, the shares of Common

                                                               Page 3 of 5 Pages
<PAGE>
 
          Stock into which the Convertible Securities are convertible or
          exercisable, as the case may be, and the shares of Common Stock held
          by Nelson and Olympus, in each case, on behalf of Nelson and Olympus.

     (c)  The following transactions with respect to the Issuer's common stock
          have been effected during the 60-day period ending May 14, 1997:

<TABLE> 
<CAPTION>  
Transaction Date    Transacting Party    Transaction      Quantity   Price
- ----------------    -----------------    -----------      --------   -----
<S>                 <C>                  <C>              <C>        <C>  
April 7, 1997       Nelson               Sell             20,000     $7.37
April 11, 1997      Nelson               Sell             16,000     $7.50
April 22, 1997      Nelson               Sell              6,300     $5.87
April 23, 1997      Nelson               Sell             29,000     $5.69
April 24, 1997      Nelson               Sell             18,700     $5.66
April 29, 1997      Nelson               Sell             15,000     $5.48
May 1, 1997         Nelson               Sell             10,000     $5.54
May 2, 1997         Nelson               Sell             14,000     $5.92
May 5, 1997         Nelson               Sell             29,600     $6.16
</TABLE> 

     (d)  Nelson and Olympus, as the direct beneficial and legal owners of the
          Convertible Securities and the shares of Common Stock, have the right
          to receive or the power to direct the receipt of dividends from, or
          the proceeds from the sale of the Convertible Securities, the Common
          Stock into which the Convertible Securities are convertible or
          exercisable, as the case may be, and the Common Stock held by them.
          However, Citadel, as managing general partner of Nelson and trading
          manager for Olympus, ultimately has the right to direct such
          activities.

     (e)  As of the date for the filing of this statement, as a result of the
          provisions of the May Agreement, Nelson and Olympus collectively own
          less than 5% of the Issuer's Common Stock. As a consequence, from and
          after such date Citadel shall not be deemed to be the beneficial owner
          of more than 5% of the Issuer's Common Stock.

                                                               Page 4 of 5 Pages
<PAGE>
 
                                       Signature
                                       ---------

     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:  May 19, 1997                      Citadel Limited Partnership
 
                                         By:  GLB Partners, L.P.,
                                              its general partner

                                         By:  Citadel Investment Group, L.L.C.,
                                              its general partner

                                         By:  /s/ Kenneth C. Griffin,
                                              -----------------------
                                              its manager

 
                                                               Page 5 of 5 Pages


© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission