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


                                  SCHEDULE 13G


                    Under the Securities Exchange Act of 1934

                        (Amendment No. ________________)*

                               UnionBancorp, Inc.
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                                (Name of Issuer)

                                  Common Stock
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                         (Title of Class of Securities)

                                    908908106
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                                 (CUSIP Number)

                                December 31, 2003
--------------------------------------------------------------------------------
                                  Date of Event

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

[X]  Rule 13d-1(b)
[ ]  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. 908908106                    13G                     Page 2 of 6 Pages
------------------------                                  ----------------------

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1        NAME OF REPORTING PERSON
                  UnionBancorp, Inc. Employee Stock Ownership Plan

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2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

                                                                     (a)[ ]

                                                                     (b)[ ]
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3        SEC USE ONLY


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4        CITIZENSHIP OR PLACE OF ORGANIZATION
                  Illinois

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NUMBER OF              5        SOLE VOTING POWER
SHARES                                   10,000 shares
BENEFICIALLY
OWNED BY               ---------------------------------------------------------
EACH                   6        SHARED VOTING POWER
REPORTING                                471,630 shares
PERSON
WITH                   ---------------------------------------------------------
                       7        SOLE DISPOSITIVE POWER
                                         10,000 shares

                       ---------------------------------------------------------
                       8        SHARED DISPOSITIVE POWER
                                         None

--------------------------------------------------------------------------------
9        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
                  481,630 shares

--------------------------------------------------------------------------------
10       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                                                                        [ ]
--------------------------------------------------------------------------------
11       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                  12.1%

--------------------------------------------------------------------------------
12       TYPE OF REPORTING PERSON*
                  EP

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            STATEMENT CONTAINING INFORMATION REQUIRED BY SCHEDULE 13G


Item 1.

         (a)      Name of Issuer
                    UnionBancorp, Inc

         (b)      Address of Issuer's Principal Executive Offices
                    321 West Main Street
                    Ottawa, Illinois 61350

Item 2.

         (a)      Name of Person Filing
                    UnionBancorp, Inc. Employee Stock Ownership Plan

         (b)      Address of Principal Business Office, or if none, Residence
                    UnionBancorp, Inc. Employee Stock Ownership Plan
                    Trustee - UnionBank
                    201 East Main Street
                    Streator, Illinois 61364

         (c)      Citizenship
                    Delaware

         (d)      Title of Class of Securities
                    Common Stock

         (e)      CUSIP Number
                    908908106


Item 3.  If this statement is filed pursuant to Rule 13d-1(b), 13d-2(b), check
         whether the person filing is a:

                  (a) [ ]  Broker or dealer registered under Section 15 of the
                           Act
                  (b) [ ]  Bank as defined in Section 3(a)(6) of the Act
                  (c) [ ]  Insurance company as defined in Section 3(a)(19) of
                           the Act
                  (d) [ ]  Investment company registered under Section 8 of the
                           Investment Company Act of 1940
                  (e) [ ]  An investment adviser in accordance with Section
                           240.13d-1(b)(1)(ii)(E)

                                Page 3 of 6 pages


                  (f) [X]  An employee benefit plan or endowment fund in
                           accordance with Section 240.13d-1(b)(1)(ii)(F)
                  (g) [ ]  A parent holding company or control person in
                           accordance with Section 240.13d-1(b)(1)(ii)(G)
                  (h) [ ]  A savings associations as defined in Section 3(b) of
                           the Federal Deposit Insurance Act
                  (i) [ ]  A church plan that is excluded from the definition of
                           an investment company under Section 3(c)(14) of the
                           Investment Company Act of 1940
                  (j) [ ]  Group, in accordance with Section
                           240.13d-1(b)(1)(ii)(J)


Item 4.  Ownership

         (a)      Amount Beneficially Owned
                    481,630 shares

         (b)      Percent of Class
                    12.1%

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

                  (i)      sole power to vote or to direct the vote
                             10,000 shares

                  (ii)     shared power to vote or to direct the vote
                             471,630 shares

                  (iii)    sole power to dispose or to direct the disposition of
                             10,000 shares

                  (iv)     shared power to dispose or to direct the disposition
                           of
                             none


Item 5.  Ownership of Five Percent or Less of a Class
                  N/A


Item 6.  Ownership of More than Five Percent on Behalf of Another Person
                  N/A


Item 7.  Identification and Classification of the Subsidiary Which Acquired the
         Security Being Reported on By the Parent Holding Company
                  N/A

                                Page 4 of 6 pages


Item 8.  Identification and Classification of Members of the Group
                  N/A


Item 9.  Notice of Dissolution of Group
                  N/A


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 the securities and were not acquired and are not held in connection
with or as a participant in any transaction having that purpose or effect.



            [THE REMAINDER OF THIS PAGE IS INTENTIONALLY LEFT BLANK]

                                Page 5 of 6 pages


                                    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: February 6, 2004


                                       UNIONBANCORP, INC. EMPLOYEE STOCK
                                       OWNERSHIP PLAN

                                            By:     UNIONBANK, its trustee


                                                    /s/ DEWEY R. YAEGER
                                                    ----------------------------
                                                    Dewey R. Yaeger
                                                    Chairman


                                Page 6 of 6 pages