0000892712-25-000161.txt : 20251114 0000892712-25-000161.hdr.sgml : 20251114 20251114161515 ACCESSION NUMBER: 0000892712-25-000161 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20251112 FILED AS OF DATE: 20251114 DATE AS OF CHANGE: 20251114 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: CHAMBAS COREY A CENTRAL INDEX KEY: 0001311295 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-34095 FILM NUMBER: 251486424 MAIL ADDRESS: STREET 1: 401 CHARMANY DRIVE CITY: MADISON STATE: WI ZIP: 53719 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: FIRST BUSINESS FINANCIAL SERVICES, INC. CENTRAL INDEX KEY: 0001521951 STANDARD INDUSTRIAL CLASSIFICATION: STATE COMMERCIAL BANKS [6022] ORGANIZATION NAME: 02 Finance EIN: 391576570 STATE OF INCORPORATION: WI FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 401 CHARMANY DRIVE CITY: MADISON STATE: WI ZIP: 53719 BUSINESS PHONE: 608-238-8008 MAIL ADDRESS: STREET 1: 401 CHARMANY DRIVE STREET 2: PO BOX 44961 CITY: MADISON STATE: WI ZIP: 53744 FORMER COMPANY: FORMER CONFORMED NAME: First Business Financial Services, Inc. DATE OF NAME CHANGE: 20110527 4 1 form4.xml STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES X0508 4 2025-11-12 0001521951 FIRST BUSINESS FINANCIAL SERVICES, INC. FBIZ 0001311295 CHAMBAS COREY A 401 CHARMANY DRIVE MADISON WI 53719 1 1 0 0 CEO 0 Common Stock 2025-11-12 4 G 0 200 D 118316 D Common Stock 2025-11-12 4 G 0 200 D 118116 D Common Stock 16992 I By 401(k) Plan Transaction is a gift, therefore price is not applicable. Peter J. Wilder (Pursuant to Power of Attorney) 2025-11-14