SCHEDULE 13G/A

BankFinancial CORP

Common Stock · CUSIP: 06643P104

Event date: 2025-09-30

Reporting persons may disclose overlapping interests. Their amounts are shown individually and are not added into a filing total.

Filing-level shares

Unavailable

Percent of class

Unavailable

• M3 Funds, LLC

  Shares: 1,000,000.00 · Class: 8.03%

• M3 Partners, LP

  Shares: 1,000,000.00 · Class: 8.03%

• M3F, Inc.

  Shares: 1,000,000.00 · Class: 8.03%

• Jason A. Stock

  Shares: 1,000,000.00 · Class: 8.03%

• William C. Waller

  Shares: 1,000,000.00 · Class: 8.03%

Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.