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


                                  SCHEDULE 13G


                    Under the Securities Exchange Act of 1934




                         Build-A-Bear Workshop, Inc.
- --------------------------------------------------------------------------------
                                (Name of Issuer)

                     Common Stock, par value $0.01 per share
- --------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                    120076104
- --------------------------------------------------------------------------------
                                 (CUSIP Number)

                                June 17, 2005
- --------------------------------------------------------------------------------
             (Date of Event Which Requires Filing of this Statement)

Check the  appropriate box to designate the rule pursuant to which this Schedule
13G is filed:

            [ ] Rule 13d-1(b)
            [X] Rule 13d-1(c)
            [ ] Rule 13d-1(d)

*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 the
disclosures provided in a prior cover page.

The information required in 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).





                               CUSIP NO. 120076104
- --------------------------------------------------------------------------------

(1)  Names of Reporting  Persons.  I.R.S.  Identification  Nos. of Above Persons
     (entities only):   Ronald J. Juvonen
- --------------------------------------------------------------------------------

(2)  Check  the  Appropriate  Box if a  Member of a Group   (See   Instructions)
        (a)                             (b)
- --------------------------------------------------------------------------------

(3)  SEC Use Only
- --------------------------------------------------------------------------------

(4)  Citizenship or Place of Organization:  United States
- --------------------------------------------------------------------------------

Number of Shares Beneficially Owned by
    Each Reporting Person               (5)  Sole Voting Power:          *
                                             -----------------------------------
                                        (6)  Shared Voting Power:        *
                                             -----------------------------------
                                        (7)  Sole Dispositive Power:     *
                                             -----------------------------------
                                        (8)  Shared Dispositive Power:   *
                                             -----------------------------------
- --------------------------------------------------------------------------------

(9)  Aggregate Amount Beneficially Owned by Each Reporting Person:   1,002,000*
- --------------------------------------------------------------------------------

(10) Check if the  Aggregate  Amount in Row (9)  Excludes  Certain  Shares  (See
     Instructions)
- --------------------------------------------------------------------------------

(11) Percent of Class Represented by Amount in Row (9):  5.0%*
- --------------------------------------------------------------------------------

(12) Type of Reporting Person (See Instructions):  IA
- --------------------------------------------------------------------------------

* The shares of the common stock of Build-A-Bear Workshop, Inc., par value $0.01
per share  (the  "Common  Stock"),  are held by  Downtown  Associates  I,  L.P.,
Downtown Associates II, L.P., Downtown Associates III, L.P., Downtown Associates
IV,  L.P.  and  Downtown  Associates  V, L.P.  (collectively  referred to as the
"Downtown  Funds").  The  general  partner  of the  Downtown  Funds is  Downtown
Associates,  L.L.C. (the "General Partner").  Ronald J. Juvonen, as the Managing
Member of the General Partner, has sole power to vote and direct the disposition
of all shares of the Common Stock held by the Downtown  Funds.  For the purposes
of Reg.  Section  240.13d-3,  Ronald J.  Juvonen is deemed to  beneficially  own
1,002,000 shares, or 5.0% of the Common Stock.





Item 1(a).  Name Of Issuer:   Build-A-Bear Workshop, Inc.

Item 1(b). Address of Issuer's Principal Executive Offices:
           1954 Innerbelt  Center Drive,  St. Louis, MO 63114


Item 2(a). Name of Person Filing:  Ronald J. Juvonen

Item 2(b).  Address  of  Principal  Business  Office  or,  if  None,  Residence:
            c/o Downtown  Associates,  L.L.C., 674 Unionville  Road,  Suite 105,
            Kennett Square, PA  19348

Item 2(c).  Citizenship:  United States

Item 2(d). Title of Class of Securities: Common Stock, par value $0.01 per share

Item 2(e).  CUSIP No.:  120076104


Item 3.     If  This  Statement  Is  Filed  Pursuant  to Section 240.13d-1(b) or
            240.13d-2(b) or (c), check whether the Person Filing is a

            Not Applicable.


Item 4.     Ownership

           (a)  Amount Beneficially Owned (as of June 17, 2005)       1,002,000*

           (b)  Percent of Class (as of June 17, 2005):                    5.0%*

           (c)  Number of Shares as to which such person has:

               (i)  sole power to vote or to direct the vote   *

               (ii) shared power to vote or to direct the vote   *

               (iii) sole power to dispose or to direct the disposition of   *

               (iv) shared power to dispose or to direct the disposition of   *


* The shares of the common stock of Build-A-Bear Workshop, Inc., par value $0.01
per share  (the  "Common  Stock"),  are held by  Downtown  Associates  I,  L.P.,
Downtown Associates II, L.P., Downtown Associates III, L.P., Downtown Associates
IV,  L.P.  and  Downtown  Associates  V, L.P.  (collectively  referred to as the
"Downtown  Funds").  The  general  partner  of the  Downtown  Funds is  Downtown
Associates,  L.L.C. (the "General Partner").  Ronald J. Juvonen, as the Managing
Member of the General Partner, has sole power to vote and direct the disposition
of all of the Common Stock held by the Downtown Funds.  For the purposes of Reg.
Section 240.13d-3,  Ronald J. Juvonen is deemed to  beneficially  own  1,002,000
shares, or 5.0% of the Common Stock.




Item 5.  Ownership of Five Percent or Less of a Class

         If this statement is being filed to report the fact that as of the date
hereof the  reporting  person has ceased to be the beneficial owner of more than
five percent of the class of securities, check the following  [ ].


Item 6.  Ownership of More Than Five Percent on Behalf of Another Person.

         Not Applicable.


Item 7.  Identification and  Classification  of the  Subsidiary  Which  Acquired
         the Security  Being Reported on by the Parent Holding Company.

         Not Applicable.


Item 8.  Identification and Classification of Members of the Group.

         Not Applicable.


Item 9.  Notice of Dissolution of Group.

         Not Applicable.


Item 10. Certification

          By  signing  below I certify  that,  to the best of my  knowledge  and
belief, the securities  referred to above were not acquired and are not held for
the purpose of or with the effect of changing or influencing  the control of the
issuer of such  securities  and were not acquired and are not held in connection
with or as a participant in any transaction having that purpose or effect.







                                    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.


                                              June 27, 2005



                                              /s/ Ronald J. Juvonen
                                              ----------------------------------
                                              Ronald J. Juvonen, in his capacity
                                              as the Managing Member of Downtown
                                              Associates, L.L.C.


      Attention: Intentional misstatements or omissions of fact constitute
                Federal criminal violations (See 18 U.S.C. 1001)