{"schema_version":"secwatch.filing_event.v1","accession":"0000073124-25-000232","form_type":"8-K","ticker":"NTRS","cik":"0000073124","company_name":"NORTHERN TRUST CORP","filed_at":"2025-07-28T23:59:59+00:00","discovered_at":"2026-05-14T18:02:46.254954+00:00","generated_at":"2026-05-18T00:37:57.780806+00:00","sec_items":["8.01","9.01"],"event_type":"other_material","sentiment":"positive","materiality_score":0.75,"calibrated_materiality_score":0.75,"confidence":"high","headline":"Northern Trust authorizes $2.5B stock buyback, replacing prior program","bullets":["Board approved up to $2.5B in common stock repurchases with no expiration date.","Replaces prior authorization from October 2021; ~4.8M shares of remaining capacity as of authorization date.","572,709 shares repurchased between July 1 and authorization date already counted against new program.","Repurchases may occur through open market, block trades, or Rule 10b5-1 plans."],"urls":{"canonical":"https://secwatch.observer/filing/0000073124-25-000232","json":"https://secwatch.observer/filing/0000073124-25-000232.json","markdown":"https://secwatch.observer/filing/0000073124-25-000232.md","text":"https://secwatch.observer/filing/0000073124-25-000232.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/73124/000007312425000232/0000073124-25-000232-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/73124/000007312425000232/ntrs-20250722.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-18T00:37:57.780806+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}