{"cik":"0001849867","ticker":"CLST","name":"Catalyst Bancorp, Inc.","sic_code":"6035","sic_description":"Savings Institution, Federally Chartered","exchange":"Nasdaq","state_of_incorporation":"","fiscal_year_end":null,"first_filing_date":"2026-05-15","last_filing_date":"2026-07-14","url":"/sec/cik-0001849867","insider_summary":{"total_transactions":31,"unique_insiders":10,"latest_transaction":"2026-06-10"},"recent_filings":[{"accession_number":"0001849867-26-000022","form_type":"8-K/A","form_type_family":"current","doc_date":"2026-09-29","title":"8-K/A — Catalyst Bancorp, Inc. — 2026-09-29","url_slug":"/sec/cik-0001849867/8-k-a/0001849867-26-000022","edgar_url":"https://www.sec.gov/Archives/edgar/data/1849867/0001849867-26-000022-index.html"},{"accession_number":"0001885818-26-000004","form_type":"4","form_type_family":"insider","doc_date":"2026-09-18","title":"4 — Catalyst Bancorp, Inc. — 2026-09-18","url_slug":"/sec/cik-0001849867/4/0001885818-26-000004","edgar_url":"https://www.sec.gov/Archives/edgar/data/1849867/0001885818-26-000004-index.html"},{"accession_number":"0001849867-26-000020","form_type":"8-K","form_type_family":"current","doc_date":"2026-09-15","title":"8-K — Catalyst Bancorp, Inc. — 2026-09-15","url_slug":"/sec/cik-0001849867/8-k/0001849867-26-000020","edgar_url":"https://www.sec.gov/Archives/edgar/data/1849867/0001849867-26-000020-index.html"},{"accession_number":"0001911094-26-000004","form_type":"4","form_type_family":"insider","doc_date":"2026-09-02","title":"4 — Catalyst Bancorp, Inc. — 2026-09-02","url_slug":"/sec/cik-0001849867/4/0001911094-26-000004","edgar_url":"https://www.sec.gov/Archives/edgar/data/1849867/0001911094-26-000004-index.html"},{"accession_number":"0001885819-26-000006","form_type":"4","form_type_family":"insider","doc_date":"2026-09-02","title":"4 — Catalyst Bancorp, Inc. — 2026-09-02","url_slug":"/sec/cik-0001849867/4/0001885819-26-000006","edgar_url":"https://www.sec.gov/Archives/edgar/data/1849867/0001885819-26-000006-index.html"},{"accession_number":"0001849867-26-000018","form_type":"8-K","form_type_family":"current","doc_date":"2026-08-18","title":"8-K — Catalyst Bancorp, Inc. — 2026-08-18","url_slug":"/sec/cik-0001849867/8-k/0001849867-26-000018","edgar_url":"https://www.sec.gov/Archives/edgar/data/1849867/0001849867-26-000018-index.html"},{"accession_number":"0001104659-26-096825","form_type":"10-Q","form_type_family":"quarterly","doc_date":"2026-08-14","title":"10-Q — Catalyst Bancorp, Inc. — 2026-08-14","url_slug":"/sec/cik-0001849867/10-q/0001104659-26-096825","edgar_url":"https://www.sec.gov/Archives/edgar/data/1849867/0001104659-26-096825-index.html"},{"accession_number":"0001849867-26-000016","form_type":"8-K","form_type_family":"current","doc_date":"2026-07-30","title":"8-K — Catalyst Bancorp, Inc. — 2026-07-30","url_slug":"/sec/cik-0001849867/8-k/0001849867-26-000016","edgar_url":"https://www.sec.gov/Archives/edgar/data/1849867/0001849867-26-000016-index.html"},{"accession_number":"0001849867-26-000014","form_type":"8-K","form_type_family":"current","doc_date":"2026-07-14","title":"8-K — Catalyst Bancorp, Inc. — 2026-07-14","url_slug":"/sec/cik-0001849867/8-k/0001849867-26-000014","edgar_url":"https://www.sec.gov/Archives/edgar/data/1849867/0001849867-26-000014-index.html"},{"accession_number":"0001104659-26-079328","form_type":"11-K","form_type_family":"other","doc_date":"2026-06-30","title":"11-K — Catalyst Bancorp, Inc. — 2026-06-30","url_slug":"/sec/cik-0001849867/11-k/0001104659-26-079328","edgar_url":"https://www.sec.gov/Archives/edgar/data/1849867/0001104659-26-079328-index.html"},{"accession_number":"0001849867-26-000011","form_type":"8-K","form_type_family":"current","doc_date":"2026-06-26","title":"8-K — Catalyst Bancorp, Inc. — 2026-06-26","url_slug":"/sec/cik-0001849867/8-k/0001849867-26-000011","edgar_url":"https://www.sec.gov/Archives/edgar/data/1849867/0001849867-26-000011-index.html"},{"accession_number":"0002001460-26-000004","form_type":"4","form_type_family":"insider","doc_date":"2026-06-12","title":"4 — Catalyst Bancorp, Inc. — 2026-06-12","url_slug":"/sec/cik-0001849867/4/0002001460-26-000004","edgar_url":"https://www.sec.gov/Archives/edgar/data/1849867/0002001460-26-000004-index.html"},{"accession_number":"0001911094-26-000002","form_type":"4","form_type_family":"insider","doc_date":"2026-06-12","title":"4 — Catalyst Bancorp, Inc. — 2026-06-12","url_slug":"/sec/cik-0001849867/4/0001911094-26-000002","edgar_url":"https://www.sec.gov/Archives/edgar/data/1849867/0001911094-26-000002-index.html"},{"accession_number":"0001885819-26-000002","form_type":"4","form_type_family":"insider","doc_date":"2026-06-12","title":"4 — Catalyst Bancorp, Inc. — 2026-06-12","url_slug":"/sec/cik-0001849867/4/0001885819-26-000002","edgar_url":"https://www.sec.gov/Archives/edgar/data/1849867/0001885819-26-000002-index.html"},{"accession_number":"0001885819-26-000004","form_type":"4/A","form_type_family":"insider","doc_date":"2026-06-12","title":"4/A — Catalyst Bancorp, Inc. — 2026-06-12","url_slug":"/sec/cik-0001849867/4-a/0001885819-26-000004","edgar_url":"https://www.sec.gov/Archives/edgar/data/1849867/0001885819-26-000004-index.html"},{"accession_number":"0001885824-26-000002","form_type":"4","form_type_family":"insider","doc_date":"2026-06-11","title":"4 — Catalyst Bancorp, Inc. — 2026-06-11","url_slug":"/sec/cik-0001849867/4/0001885824-26-000002","edgar_url":"https://www.sec.gov/Archives/edgar/data/1849867/0001885824-26-000002-index.html"},{"accession_number":"0001885822-26-000002","form_type":"4","form_type_family":"insider","doc_date":"2026-06-11","title":"4 — Catalyst Bancorp, Inc. — 2026-06-11","url_slug":"/sec/cik-0001849867/4/0001885822-26-000002","edgar_url":"https://www.sec.gov/Archives/edgar/data/1849867/0001885822-26-000002-index.html"},{"accession_number":"0001885821-26-000002","form_type":"4","form_type_family":"insider","doc_date":"2026-06-11","title":"4 — Catalyst Bancorp, Inc. — 2026-06-11","url_slug":"/sec/cik-0001849867/4/0001885821-26-000002","edgar_url":"https://www.sec.gov/Archives/edgar/data/1849867/0001885821-26-000002-index.html"},{"accession_number":"0001885818-26-000002","form_type":"4","form_type_family":"insider","doc_date":"2026-06-11","title":"4 — Catalyst Bancorp, Inc. — 2026-06-11","url_slug":"/sec/cik-0001849867/4/0001885818-26-000002","edgar_url":"https://www.sec.gov/Archives/edgar/data/1849867/0001885818-26-000002-index.html"},{"accession_number":"0001885817-26-000002","form_type":"4","form_type_family":"insider","doc_date":"2026-06-11","title":"4 — Catalyst Bancorp, Inc. — 2026-06-11","url_slug":"/sec/cik-0001849867/4/0001885817-26-000002","edgar_url":"https://www.sec.gov/Archives/edgar/data/1849867/0001885817-26-000002-index.html"},{"accession_number":"0001884982-26-000002","form_type":"4","form_type_family":"insider","doc_date":"2026-06-11","title":"4 — Catalyst Bancorp, Inc. — 2026-06-11","url_slug":"/sec/cik-0001849867/4/0001884982-26-000002","edgar_url":"https://www.sec.gov/Archives/edgar/data/1849867/0001884982-26-000002-index.html"},{"accession_number":"0001949846-26-000364","form_type":"144","form_type_family":"other","doc_date":"2026-06-10","title":"144 — Catalyst Bancorp, Inc. — 2026-06-10","url_slug":"/sec/cik-0001849867/144/0001949846-26-000364","edgar_url":"https://www.sec.gov/Archives/edgar/data/1849867/0001949846-26-000364-index.html"},{"accession_number":"0001849867-26-000009","form_type":"8-K","form_type_family":"current","doc_date":"2026-05-21","title":"8-K — Catalyst Bancorp, Inc. — 2026-05-21","url_slug":"/sec/cik-0001849867/8-k/0001849867-26-000009","edgar_url":"https://www.sec.gov/Archives/edgar/data/1849867/0001849867-26-000009-index.html"},{"accession_number":"0001104659-26-062126","form_type":"10-Q","form_type_family":"quarterly","doc_date":"2026-05-15","title":"10-Q — Catalyst Bancorp, Inc. — 2026-05-15","url_slug":"/sec/cik-0001849867/10-q/0001104659-26-062126","edgar_url":"https://www.sec.gov/Archives/edgar/data/1849867/0001104659-26-062126-index.html"}],"related_endpoints":{"profile":"/sec/CLST/profile","timeline":"/sec/CLST/timeline","peers":"/sec/CLST/peers","insider_pulse":"/sec/CLST/insider-pulse","insider_summary":"/sec/CLST/insider-summary","insider_transactions":"/sec/CLST/insider-transactions","form144":"/sec/CLST/form144","holdings_as_filer":"/sec/CLST/holdings","financial_facts":"/sec/CLST/financial-facts","derivatives":"/sec/CLST/derivatives","officers":"/sec/CLST/officers","insider_network":"/sec/CLST/insider-network","risk_flags":"/sec/CLST/risk-flags","filings":"/sec/CLST/filings","cross_topic_dossier":"/api/v1/dossier?ticker=CLST"}}