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

                                 SCHEDULE TO/A-2

            TENDER OFFER STATEMENT UNDER SECTION 14(d)(1) or 13(e)(1)
                     OF THE SECURITIES EXCHANGE ACT OF 1934

                              Sonoma Valley Bancorp
                              ---------------------
                       (Name of Subject Company (Issuer))

                              Sonoma Valley Bancorp
                              ---------------------
                        (Name of Filing Person (Issuer))

                           Common Stock, No Par Value
                           --------------------------
                         (Title of Class of Securities)

                                   835592 106
                                   ----------
                      (CUSIP Number of Class of Securities)

                                Mel Switzer, Jr.
                      President and Chief Executive Officer
                               202 W. Napa Street
                            Sonoma, California 95476
                                 (707) 935-3200
                                 --------------
                 (Name, address and telephone numbers of persons
               authorized to receive notices and communications on
                            behalf of filing persons)

                                    Copy to:

                                  Daniel B. Eng
                                 David C. Adams
                              Bartel Eng & Schroder
                         1331 Garden Highway, Suite 300
                          Sacramento, California 95833
                                 (916) 442-0400

                            CALCULATION OF FILING FEE
               Transaction valuation*       Amount of filing fee**
                    $3,500,000                    $443.45

* Calculated  solely for the purpose of determining the filing fee in accordance
with Rule 0-11(b)(1). This calculation assumes the purchase of 100,000 shares at
$35.00 per share.

**  Previously paid



[ ]  Check  the  box if any  part  of the  fee is  offset  as  provided  by Rule
     011(a)(2)  and  identify  the  filing  with  which the  offsetting  fee was
     previously  paid.  Identify the previous filing by  registration  statement
     number or the Form or Schedule and the date of its filing.

     Amount Previously Paid:  Not applicable
     Form or Registration Number:  Not applicable
     Filing Party:  Not applicable
     Date Filed:  Not applicable

[ ]  Check the box if the filing relates  solely to  preliminary  communications
     made before the commencement of a tender offer:

Check the  appropriate  boxes below to designate any  transactions  to which the
statement relates:

[ ]  third party tender offer subject to Rule 14d-1.

[X]  issuer tender offer subject to Rule 13e-4.

[ ]  going private transaction subject to Rule 13e-3.

[ ]  amendment to Schedule 13D under Rule 13d-2.

Check the following box if the filing is a final amendment reporting the results
of a tender offer: [ ]

Introductory Statement

This Amendment No. 2 to the issuer tender offer of Sonoma Valley Bancorp,  Inc.,
a California  corporation,  (the  "Company") to purchase up to 100,000 shares of
its Common Stock,  no par value.  Sonoma Valley  Bancorp is offering to purchase
these shares at $35.00 per share, net to the seller in cash,  without  interest,
upon the terms and subject to the conditions set forth in the Offer to Purchase,
dated April 6, 2004, and in the related Letter of Transmittal, which, as amended
or  supplemented  from  time to time,  together  constitute  the  "Offer."  This
Amendment  No.  2 to  the  Issuer  Tender  Offer  on  Schedule  TO is  filed  in
satisfaction of the reporting requirements of Rule 13e-4(c)(1) promulgated under
the Securities Exchange Act of 1934, as amended.






Items 1, 4, 10 and 12 of the Schedule TO, which incorporates by reference the
information contained in the Offer to Purchase, are hereby amended and
supplemented as follows.

ITEM 1.  SUMMARY TERM SHEET.

     The information  called for in Item 1 is incorporated by reference from the
Offer to  purchase  and the  Supplement  to the Offer to  Purchase  attached  as
exhibits to this Schedule TO-I/A-2.

ITEM 4.  TERMS OF THE TRANSACTION

     (a) The  information  about the terms of the  transaction  set forth in the
"Summary  Term Sheet,"  "Section 1. Number of Shares;  Priority and  Proration,"
"Section  2.  Purpose  of Offer;  Certain  Effects  of the  Offer to  Purchase,"
"Section 3. Procedure for Tendering  Shares,"  "Section 4.  Withdrawal  Rights,"
"Section 5.  Acceptance  for  Payment of Shares and Payment of Purchase  Price,"
"Section 6. Conditional Tender of Shares," "Section 7. Certain Conditions of the
Offer,"  "Section 8. Price  Range of Shares;  Dividends,"  "Section  9.  Certain
Information  About Sonoma  Valley  Bancorp,"  "Section 10.  Source and Amount of
Funds," "Section 11. Interest of Directors and Executive Officers;  Transactions
and  Arrangements  Concerning the Shares,"  "Section 12. Effects of the Offer on
the Market For  Shares,"  "Section  13. Legal  Matters;  Regulatory  Approvals,"
"Section 14. Certain Federal Income Tax Consequences," "Section 15. Extension of
the Offer;  Termination,"  "Section  16.  Solicitation  Fees and  Expenses"  and
"Section 17.  Miscellaneous"  of the Offer to Purchase and the Supplement to the
Offer to Purchase is incorporated herein by reference. There will be no material
differences in the rights of security holders as a result of this transaction.

     The following items were removed from the original Offer to Purchase:

     Under  "Summary  Term  Sheet"  the  question  "DO ODD LOT  HOLDERS  RECEIVE
PREFERENTIAL TREATMENT IN THE TENDER OFFER?" and answer was added to replace the
questions  "WHAT  IS AN ODD  LOT?  WHAT  IS  DIFFERENT  ABOUT  AN ODD  LOT IF IT
REPRESENTS  ALL OF THE  SHARES I OWN?"  and  accompanying  answers.  Section 1 -
Number of Shares,  Priority and  Proration,  subsection  entitled "Odd Lots" was
revised to remove the  reservation of right to acquire all the shares of holders
left holding fewer than 100 shares after proration.  Under Section 3 - Procedure
for Tendering Shares,  Subsection titled  "Appointment of Proxy" was removed. In
Section  9  -  Certain  Information  About  Sonoma  Valley  Bancorp,  Subsection
"Incorporation  by  Reference,"  the  reference  to forward -  incorporation  by
reference was removed.

     (b) The  Company has been  advised  that some of its  directors,  executive
officers, or affiliates may tender shares pursuant to the Offer to Purchase.




ITEM 10. FINANCIAL STATEMENTS.

     (a) and (b) -

     The Company is  purchasing  the shares with cash.  The Offer to Purchase is
not subject to any  financing  condition  and the Company is a public  reporting
company under Section 13(a) or 15(d) of the Securities Exchange Act of 1934 that
files reports  electronically on EDGAR.  Historical financial statements for the
year  ended  December  31,  2003 as  filed  with  the  Securities  and  Exchange
Commission  on Form  10-K  are  incorporated  herein  by  reference.  Historical
financial  statements  for the years  ended  December  31, 2002 and 2001 are not
deemed to be  incorporated  by this  reference.  The information set forth under
"Section 9. Certain  Information  about  Sonoma  Valley  Bancorp,"  "Section 10.
Source  and  Amount  of  Funds"  and  "Selected  Financial  Statements"  is also
incorporated herein by reference.

ITEM 12. EXHIBITS.

     (a)(1)(i)    Offer to Purchase, dated April 6, 2004.(1)

     (a)(1)(ii)   Letter   of   Transmittal,   together  with   Guidelines   for
                  Certification    of    Taxpayer   Identification   Number   on
                  Substitute Form W-9. (1)

     (a)(1)(iii)  Letter  to  Shareholders  of  Sonoma  Valley  Bancorp from Mel
                  Switzer,  Jr.,  President  and  Chief Executive Officer, dated
                  April 6, 2004. (1)

     (a)(1)(iv)   Notice of Guaranteed Delivery. (1)

     (a)(1)(v)    Letter to Brokers, Dealers, Commercial Banks, Trust  Companies
                  and Other Nominees, dated April 6, 2004. (1)

     (a)(1)(vi)   Letter  to  Clients  for  use  by Brokers, Dealers, Commercial
                  Banks, Trust Companies and  Other  Nominees to their  Clients,
                  dated April 6, 2004. (1)

     (a)(1)(vii)  Supplement  Number  1  to  the  Offer to Purchase, dated April
                  22, 2004. (1)

     (a)(1)(viii) Supplement Number 2 to the Offer to Purchase  dated April  29,
                  2004. (2)

     (a)(5)       Press Release dated April 6, 2004. (1)

     (b)          Not applicable

     (c)          Not applicable

     (d)          Not applicable

     (e)          Not applicable


     (f)          Not applicable

     (g)          Not applicable

     (h)          Not applicable

(1) Incorporated by reference from Schedule TO-I filed on April 6, 2004.
(2) Incorporated by reference from Schedule TO-I/A-1 filed on April 22, 2004.







                                    SIGNATURE


     After due 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:    April 29, 2004                 SONOMA VALLEY BANCORP



                                        By:  /s/ Mel Switzer, Jr.
                                           -------------------------------
                                           Mel Switzer, Jr.,
                                           President and Chief Executive Officer
                                           (Principal Executive Officer)