M3 group discloses 3.95% BankFinancial (BFIN) ownership position

Rhea-AI Filing Summary

M3 investment entities report a minority stake in BankFinancial Corp. M3 Partners, L.P. directly owns 491,747 shares of BankFinancial common stock, representing 3.95% of the outstanding class as of the reported date.

The shares are held through M3 Partners, whose general partner is M3 Funds, LLC and whose investment adviser is M3F, Inc. Jason A. Stock and William C. Waller, as managers of these entities, may be deemed to share indirect beneficial ownership. They certify the shares were acquired and are held for passive investment, not to change or influence control of BankFinancial.

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Accepted by SEC EDGAR 02/04/2026 - 02:21 PM Learn about SEC filing dates

FAQ

What ownership stake in BankFinancial Corp (BFIN) do the M3 entities report?

The M3 entities report beneficial ownership of 491,747 BankFinancial common shares, equal to 3.95% of the class. All shares are held directly by M3 Partners, L.P., with related M3 entities and individuals deemed to share indirect beneficial ownership.

Which entities and individuals are reporting BankFinancial (BFIN) ownership in this Schedule 13G/A?

The filing is made by M3 Partners, L.P., M3 Funds, LLC, M3F, Inc., and individuals Jason A. Stock and William C. Waller. They report shared voting and dispositive power over the same 491,747 BankFinancial common shares.

Is the M3 group’s BankFinancial (BFIN) position considered passive or activist?

The position is certified as passive. The signatories state the securities were not acquired and are not held to change or influence control of BankFinancial, and are not held in connection with any control-seeking transaction, other than activities solely related to a nomination under Rule 14a-11.

How is voting and dispositive power over BankFinancial (BFIN) shares allocated among the M3 filers?

Each reporting person lists 0 shares with sole voting or dispositive power and 491,747 shares with shared voting and dispositive power. This reflects that control over the position is exercised collectively through M3 Partners, its general partner, adviser, and managers.

Why is this Schedule 13G/A amendment important for BankFinancial (BFIN) investors?

It updates that an M3-managed group holds 3.95% of BankFinancial’s common stock on a passive basis. This helps investors understand the presence and structure of a sizable institutional shareholder, including the roles of M3 Partners, its affiliates, and key managers.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 5)

BANKFINANCIAL CORP

(Name of Issuer)

Common Stock

(Title of Class of Securities)

06643P104

(CUSIP Number)

12/31/2025

(Date of Event Which Requires Filing of this Statement)

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

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

SCHEDULE 13G

CUSIP No. 06643P104

1

Names of Reporting Persons

M3 Funds, LLC

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

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 491,747.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 491,747.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

491,747.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

3.95 %

12

Type of Reporting Person (See Instructions)

OO

Comment for Type of Reporting Person: Limited Liability Company

SCHEDULE 13G

CUSIP No. 06643P104

1

Names of Reporting Persons

M3 Partners, LP

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

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 491,747.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 491,747.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

491,747.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

3.95 %

12

Type of Reporting Person (See Instructions)

PN

SCHEDULE 13G

CUSIP No. 06643P104

1

Names of Reporting Persons

M3F, Inc.

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

UTAH

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 491,747.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 491,747.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

491,747.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

3.95 %

12

Type of Reporting Person (See Instructions)

IA, CO

SCHEDULE 13G

CUSIP No. 06643P104

1

Names of Reporting Persons

Jason A. Stock

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 With:

5	Sole Voting Power 0.00
6	Shared Voting Power 491,747.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 491,747.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

491,747.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

3.95 %

12

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13G

CUSIP No. 06643P104

1

Names of Reporting Persons

William C. Waller

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 With:

5	Sole Voting Power 0.00
6	Shared Voting Power 491,747.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 491,747.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

491,747.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

3.95 %

12

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13G

Item 1.
(a)	Name of issuer: BANKFINANCIAL CORP
(b)	Address of issuer's principal executive offices: 60 North Frontage Road, Burr Ridge, Illinois, 60527
Item 2.
(a)	Name of person filing: M3 Funds, LLC M3 Partners, LP M3F, Inc. Jason A. Stock William C. Waller
(b)	Address or principal business office or, if none, residence: For all persons filing, 2070 E 2100 S, Suite 250, Salt Lake City, UT 84109
(c)	Citizenship: M3 Funds, LLC is a Delaware limited liability company M3 Partners, LP is a Delaware limited partnership M3F, Inc. is a Utah corporation Mr. Stock and Mr. Waller are United States citizens
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: 06643P104
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(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 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: The responses of each Reporting Person to row 9 of the cover pages of this Schedule 13G are incorporated by reference into this Item 4. All of the reported shares are owned directly by M3 Partners, L.P. ("M3 Partners"), whose general partner is M3 Funds, LLC (the "General Partner") and whose investment adviser is M3F, Inc. (the "Investment Adviser"). The General Partner and the Investment Adviser could each be deemed to be indirect beneficial owners of the reported shares, and could be deemed to share such beneficial ownership with M3 Partners. Jason A. Stock and William C. Waller are the managers of the General Partner and the managing directors of the Investment Adviser, and could be deemed to share such indirect beneficial ownership with the General Partner, the Investment Adviser and M3 Partners.
(b)	Percent of class: The responses of each Reporting Person to row 11 of the cover pages of this Schedule 13G are incorporated by reference into this Item 4.
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: The responses of each Reporting Person to row 5 of the cover pages of this Schedule 13G are incorporated by reference into this Item 4.
	(ii) Shared power to vote or to direct the vote: The responses of each Reporting Person to row 6 of the cover pages of this Schedule 13G are incorporated by reference into this Item 4.
	(iii) Sole power to dispose or to direct the disposition of: The responses of each Reporting Person to row 7 of the cover pages of this Schedule 13G are incorporated by reference into this Item 4.
	(iv) Shared power to dispose or to direct the disposition of: The responses of each Reporting Person to row 8 of the cover pages of this Schedule 13G are incorporated by reference into this Item 4.
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
Item 6.	Ownership of more than 5 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 or Control Person.
	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.

Certifications:

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, other than activities solely in connection with a nomination under ?? 240.14a-11.

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.

M3 Funds, LLC

Signature:	/s/ Jason A. Stock
Name/Title:	Jason A. Stock, Manager
Date:	02/03/2026

M3 Partners, LP

Signature:	By: M3 Funds, LLC, General Partner /s/ Jason A. Stock
Name/Title:	Jason A. Stock, Manager
Date:	02/03/2026

M3F, Inc.

Signature:	/s/ Jason A. Stock
Name/Title:	Jason A. Stock, Managing Director
Date:	02/03/2026

Jason A. Stock

Signature:	/s/ Jason A. Stock
Name/Title:	Jason A. Stock
Date:	02/03/2026

William C. Waller

Signature:	/s/ William C. Waller
Name/Title:	William C. Waller
Date:	02/03/2026