{"cik":"0001521951","ticker":"FBIZ","name":"FIRST BUSINESS FINANCIAL SERVICES, INC.","sic_code":"6022","sic_description":"State Commercial Banks","exchange":"Nasdaq","state_of_incorporation":"WI","fiscal_year_end":"1231","first_filing_date":"2026-05-11","last_filing_date":"2026-06-02","url":"/sec/cik-0001521951","insider_summary":{"total_transactions":10,"unique_insiders":10,"latest_transaction":"2026-05-16"},"recent_filings":[{"accession_number":"0000892712-26-000292","form_type":"3","form_type_family":"insider","doc_date":"2026-06-02","title":"3 — FIRST BUSINESS FINANCIAL SERVICES, INC. — 2026-06-02","url_slug":"/sec/cik-0001521951/3/0000892712-26-000292","edgar_url":"https://www.sec.gov/Archives/edgar/data/1521951/0000892712-26-000292-index.html"},{"accession_number":"0000892712-26-000263","form_type":"4","form_type_family":"insider","doc_date":"2026-05-19","title":"4 — FIRST BUSINESS FINANCIAL SERVICES, INC. — 2026-05-19","url_slug":"/sec/cik-0001521951/4/0000892712-26-000263","edgar_url":"https://www.sec.gov/Archives/edgar/data/1521951/0000892712-26-000263-index.html"},{"accession_number":"0000892712-26-000261","form_type":"4","form_type_family":"insider","doc_date":"2026-05-19","title":"4 — FIRST BUSINESS FINANCIAL SERVICES, INC. — 2026-05-19","url_slug":"/sec/cik-0001521951/4/0000892712-26-000261","edgar_url":"https://www.sec.gov/Archives/edgar/data/1521951/0000892712-26-000261-index.html"},{"accession_number":"0000892712-26-000260","form_type":"4","form_type_family":"insider","doc_date":"2026-05-19","title":"4 — FIRST BUSINESS FINANCIAL SERVICES, INC. — 2026-05-19","url_slug":"/sec/cik-0001521951/4/0000892712-26-000260","edgar_url":"https://www.sec.gov/Archives/edgar/data/1521951/0000892712-26-000260-index.html"},{"accession_number":"0000892712-26-000269","form_type":"4","form_type_family":"insider","doc_date":"2026-05-19","title":"4 — FIRST BUSINESS FINANCIAL SERVICES, INC. — 2026-05-19","url_slug":"/sec/cik-0001521951/4/0000892712-26-000269","edgar_url":"https://www.sec.gov/Archives/edgar/data/1521951/0000892712-26-000269-index.html"},{"accession_number":"0000892712-26-000268","form_type":"4","form_type_family":"insider","doc_date":"2026-05-19","title":"4 — FIRST BUSINESS FINANCIAL SERVICES, INC. — 2026-05-19","url_slug":"/sec/cik-0001521951/4/0000892712-26-000268","edgar_url":"https://www.sec.gov/Archives/edgar/data/1521951/0000892712-26-000268-index.html"},{"accession_number":"0000892712-26-000267","form_type":"4","form_type_family":"insider","doc_date":"2026-05-19","title":"4 — FIRST BUSINESS FINANCIAL SERVICES, INC. — 2026-05-19","url_slug":"/sec/cik-0001521951/4/0000892712-26-000267","edgar_url":"https://www.sec.gov/Archives/edgar/data/1521951/0000892712-26-000267-index.html"},{"accession_number":"0000892712-26-000266","form_type":"4","form_type_family":"insider","doc_date":"2026-05-19","title":"4 — FIRST BUSINESS FINANCIAL SERVICES, INC. — 2026-05-19","url_slug":"/sec/cik-0001521951/4/0000892712-26-000266","edgar_url":"https://www.sec.gov/Archives/edgar/data/1521951/0000892712-26-000266-index.html"},{"accession_number":"0000892712-26-000265","form_type":"4","form_type_family":"insider","doc_date":"2026-05-19","title":"4 — FIRST BUSINESS FINANCIAL SERVICES, INC. — 2026-05-19","url_slug":"/sec/cik-0001521951/4/0000892712-26-000265","edgar_url":"https://www.sec.gov/Archives/edgar/data/1521951/0000892712-26-000265-index.html"},{"accession_number":"0000892712-26-000264","form_type":"4","form_type_family":"insider","doc_date":"2026-05-19","title":"4 — FIRST BUSINESS FINANCIAL SERVICES, INC. — 2026-05-19","url_slug":"/sec/cik-0001521951/4/0000892712-26-000264","edgar_url":"https://www.sec.gov/Archives/edgar/data/1521951/0000892712-26-000264-index.html"},{"accession_number":"0001104659-26-058671","form_type":"8-K/A","form_type_family":"current","doc_date":"2026-05-11","title":"8-K/A — FIRST BUSINESS FINANCIAL SERVICES, INC. — 2026-05-11","url_slug":"/sec/cik-0001521951/8-k-a/0001104659-26-058671","edgar_url":"https://www.sec.gov/Archives/edgar/data/1521951/0001104659-26-058671-index.html"}],"related_endpoints":{"profile":"/sec/FBIZ/profile","timeline":"/sec/FBIZ/timeline","peers":"/sec/FBIZ/peers","insider_pulse":"/sec/FBIZ/insider-pulse","insider_summary":"/sec/FBIZ/insider-summary","insider_transactions":"/sec/FBIZ/insider-transactions","form144":"/sec/FBIZ/form144","holdings_as_filer":"/sec/FBIZ/holdings","financial_facts":"/sec/FBIZ/financial-facts","derivatives":"/sec/FBIZ/derivatives","officers":"/sec/FBIZ/officers","insider_network":"/sec/FBIZ/insider-network","risk_flags":"/sec/FBIZ/risk-flags","filings":"/sec/FBIZ/filings","cross_topic_dossier":"/api/v1/dossier?ticker=FBIZ"}}