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


                                  SCHEDULE 13G

                    Under the Securities Exchange Act of 1934

                               (Amendment _____)*


                            BankFinancial Corporation

                                (Name of Issuer)


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

                                   06643P 10 4
                                  -------------
                                 (CUSIP Number)

                                December 31, 2005
                                -----------------
             (Date of Event Which Requires Filing of This Statement)

     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).

                               Page 1 of 5 Pages


CUSIP NO.06643P 10 4 13G Page 2 of 5 Pages ================================================================================ 1 Names of Reporting Persons I.R.S. Identification Nos. of above persons (entities only) BankFinancial, F.S.B. Employee Stock Ownership Plan Trust - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 2 Check the Appropriate Box if a Member of a Group (See Instructions) (a) __________ (b) ____x_____ - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 3 SEC Use Only - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 4 Citizenship or Place of Organization Illinois - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Number of Shares 5 Sole Voting Power Beneficially Owned by Each Reporting Person 1,908,367 With: - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 6 Shared Voting Power 48,933 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 7 Sole Dispositive Power 1,957,300 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 8 Shared Dispositive Power 0 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 9 Aggregate Amount Beneficially Owned by Each Reporting Person 1,957,300 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 10 Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) N/A - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 11 Percent of Class Represented by Amount in Row 9 8% of 24,466,250 shares of Common Stock outstanding as of December 31, 2005. - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 12 Type of Reporting Person (See Instructions) EP ================================================================================

CUSIP NO. 06643P 10 4 13G Page 3 of 5 Pages Item 1 (a) Name of Issuer BankFinancial Corporation (b) Address of Issuer's Principal Executive Offices 15W060 North Frontage Road Burr Ridge, Illinois 60527 Item 2 (a) Name of Person Filing BankFinancial, F.S.B. Employee Stock Ownership Plan Trust Trustee: First Bankers Trust Services, Inc. (b) Address of Principal Business Office 2321 Kochs Lane P.O. Box 4005 Quincy, IL 62305 (c) Citizenship or Place of Organization Illinois (d) Title of Class of Securities Common Stock, par value $0.01 per share (e) CUSIP Number 06643P 10 4 Item 3. If this statement is filed pursuant to ss.ss.240.13d-1(b) or 240.13d-2(b, or (c), check whether the person filing is a: (f) [X] An employee benefit plan or endowment fund in accordance with ss.240.13d-1(b)(1)(ii)(F). Item 4. Ownership Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1. (a) Amount beneficially owned: 1,957,300. (b) Percent of class: 8.

CUSIP NO. 06643P 10 4 13G Page 4 of 5 Pages (c) Number of shares as to which the person has: (i) Sole power to vote or to direct the vote 1,908,367. (ii) Shared power to vote or to direct the vote 48,933. (iii) Sole power to dispose or to direct the disposition of 1,957,300. (iv) Shared power to dispose or to direct the disposition of 0. Item 5. Ownership of Five Percent or Less of a Class Not applicable 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 The reporting person is an employee benefit plan subject to the provisions of the Employee Retirement Income Security Act of 1974. 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 acquired and are held in the ordinary course of business and 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 in connection with or as a participant in any transaction having that purpose or effect.

CUSIP NO. 06643P 10 4 Page 5 of 5 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 10, 2006 BANKFINANCIAL, F.S.B. EMPLOYEE STOCK OWNERSHIP PLAN TRUST By: First Bankers Trust Services, Inc., as Trustee /s/ Linda J. Shultz ----------------------------------- Name: Linda J. Shultz Title: Trust Officer