{"cik":1599298,"company":{"entity_status":null,"filings":[{"accession":"0001193125-26-424642","document":"d126889ddef14a.htm","filed":"2026-10-19","form":"DEF 14A","items":"","report_date":"2026-11-04"},{"accession":"0001890784-26-000006","document":"xslF345X06/wk-form4_1792008434.xml","filed":"2026-10-14","form":"4","items":"","report_date":"2026-10-08"},{"accession":"0001193125-26-405776","document":"d178892d8k.htm","filed":"2026-09-29","form":"8-K","items":"1.01,3.02,5.03,8.01,9.01","report_date":"2026-09-28"},{"accession":"0001599298-26-000081","document":"smmt-20260915.htm","filed":"2026-09-15","form":"8-K","items":"8.01,9.01","report_date":"2026-09-15"},{"accession":"0001599298-26-000078","document":"smmt-20260913.htm","filed":"2026-09-14","form":"8-K","items":"8.01,9.01","report_date":"2026-09-13"},{"accession":"0001599298-26-000076","document":"smmt-20260902.htm","filed":"2026-09-03","form":"8-K","items":"8.01,9.01","report_date":"2026-09-02"},{"accession":"0001599298-26-000074","document":"smmt-20260825.htm","filed":"2026-08-26","form":"8-K","items":"8.01,9.01","report_date":"2026-08-25"},{"accession":"0001599298-26-000071","document":"smmt-20260805.htm","filed":"2026-08-05","form":"8-K","items":"8.01,9.01","report_date":"2026-08-05"},{"accession":"0001599298-26-000068","document":"smmt-20260630.htm","filed":"2026-07-23","form":"10-Q","items":"","report_date":"2026-06-30"},{"accession":"0001599298-26-000067","document":"smmt-20260723.htm","filed":"2026-07-23","form":"8-K","items":"2.02,7.01,9.01","report_date":"2026-07-23"},{"accession":"0001193125-26-314214","document":"d143170d8k.htm","filed":"2026-07-23","form":"8-K","items":"1.01,9.01","report_date":"2026-07-23"},{"accession":"0001599298-26-000058","document":"smmt-20260722.htm","filed":"2026-07-22","form":"8-K","items":"8.01,9.01","report_date":"2026-07-22"},{"accession":"0001599298-26-000054","document":"smmt-20260610.htm","filed":"2026-06-12","form":"8-K","items":"5.07","report_date":"2026-06-10"},{"accession":"0001507650-26-000007","document":"xslF345X06/wk-form4_1781289308.xml","filed":"2026-06-12","form":"4","items":"","report_date":"2026-06-12"},{"accession":"0001055919-26-000007","document":"xslF345X06/wk-form4_1781281727.xml","filed":"2026-06-12","form":"4","items":"","report_date":"2026-06-12"},{"accession":"0001599298-26-000052","document":"smmt-20260610.htm","filed":"2026-06-11","form":"8-K","items":"7.01","report_date":"2026-06-10"},{"accession":"0001569769-26-000004","document":"xslF345X06/wk-form4_1780605646.xml","filed":"2026-06-04","form":"4","items":"","report_date":"2026-06-04"},{"accession":"0001507650-26-000005","document":"xslF345X06/wk-form4_1780609499.xml","filed":"2026-06-04","form":"4","items":"","report_date":"2026-06-04"},{"accession":"0001055919-26-000005","document":"xslF345X06/wk-form4_1780610903.xml","filed":"2026-06-04","form":"4","items":"","report_date":"2026-06-04"},{"accession":"0001599298-26-000049","document":"smmt-20260602.htm","filed":"2026-06-03","form":"8-K","items":"8.01","report_date":"2026-06-02"},{"accession":"0001599298-26-000043","document":"smmt-20260530.htm","filed":"2026-06-01","form":"8-K","items":"8.01,9.01","report_date":"2026-05-30"},{"accession":"0001599298-26-000039","document":"smmt-20260331.htm","filed":"2026-04-30","form":"10-Q","items":"","report_date":"2026-03-31"},{"accession":"0001599298-26-000037","document":"smmt-20260430.htm","filed":"2026-04-30","form":"8-K","items":"2.02,9.01","report_date":"2026-04-30"},{"accession":"0001599298-26-000029","document":"smmt-20260417.htm","filed":"2026-04-17","form":"DEF 14A","items":"","report_date":"2026-04-17"},{"accession":"0001599298-26-000015","document":"smmt-20251231.htm","filed":"2026-02-23","form":"10-K","items":"","report_date":"2025-12-31"},{"accession":"0001599298-26-000014","document":"smmt-20260223.htm","filed":"2026-02-23","form":"8-K","items":"2.02,7.01,9.01","report_date":"2026-02-23"},{"accession":"0001599298-26-000006","document":"smmt-20260129.htm","filed":"2026-01-29","form":"8-K","items":"8.01,9.01","report_date":"2026-01-29"},{"accession":"0001890784-26-000003","document":"xslF345X05/wk-form4_1768251691.xml","filed":"2026-01-12","form":"4","items":"","report_date":"2026-01-08"},{"accession":"0001599298-26-000004","document":"smmt-20260112.htm","filed":"2026-01-12","form":"8-K","items":"2.02,7.01,9.01","report_date":"2026-01-12"},{"accession":"0001963544-26-000002","document":"xslF345X05/wk-form4_1767743566.xml","filed":"2026-01-06","form":"4","items":"","report_date":"2026-01-02"},{"accession":"0001599298-25-000166","document":"smmt-20251107.htm","filed":"2025-11-07","form":"8-K","items":"8.01,9.01","report_date":"2025-11-07"},{"accession":"0001193125-25-245790","document":"d274712d8k.htm","filed":"2025-10-22","form":"8-K","items":"1.01,3.02,7.01,9.01","report_date":"2025-10-21"},{"accession":"0001599298-25-000159","document":"smmt-20250930.htm","filed":"2025-10-20","form":"10-Q","items":"","report_date":"2025-09-30"},{"accession":"0001599298-25-000156","document":"smmt-20251017.htm","filed":"2025-10-20","form":"8-K","items":"2.02,8.01,9.01","report_date":"2025-10-17"},{"accession":"0001599298-25-000137","document":"smmt-20250907.htm","filed":"2025-09-08","form":"8-K","items":"8.01,9.01","report_date":"2025-09-07"},{"accession":"0001599298-25-000128","document":"smmt-20250811.htm","filed":"2025-08-11","form":"8-K","items":"2.02,9.01","report_date":"2025-08-11"},{"accession":"0001599298-25-000126","document":"smmt-20250630.htm","filed":"2025-08-11","form":"10-Q","items":"","report_date":"2025-06-30"},{"accession":"0001193125-25-178022","document":"d56029d8k.htm","filed":"2025-08-11","form":"8-K","items":"1.01,9.01","report_date":"2025-08-11"},{"accession":"0001599298-25-000120","document":"smmt-20250616.htm","filed":"2025-06-20","form":"8-K","items":"1.01","report_date":"2025-06-16"},{"accession":"0001599298-25-000116","document":"smmt-20250612.htm","filed":"2025-06-17","form":"8-K","items":"5.07","report_date":"2025-06-12"}],"former_names":[{"from":"2014-12-31T05:00:00.000Z","name":"Summit Therapeutics plc","to":"2020-09-17T04:00:00.000Z"},{"from":"2014-03-04T05:00:00.000Z","name":"Summit Corp plc","to":"2015-01-30T05:00:00.000Z"}],"gleif_parents":[],"headquarters":[],"insiders":[],"legal_name":null,"lei":null,"lei_status":null,"lei_updated_at":null,"names":[],"parent_exceptions":[],"parents":[],"wikidata_id":null},"research_built_at":"2026-10-22T06:10:41.883891+00:00","reviewed_events":[],"reviewed_events_coverage":"selective; not a complete event history; accounting series not reconciled","sources":[{"coverage":"8029 issuers; up to 32 recent company reports and 8 ownership-change filings per issuer","id":"sec","license":"SEC public-information reuse","license_url":"https://www.sec.gov/about/privacy-information","name":"SEC submissions","retrieved_at":"2026-10-22T06:11:15.857808+00:00","status":"ok","url":"https://www.sec.gov/search-filings/edgar-application-programming-interfaces"},{"coverage":"1663 unambiguous CIK-linked entities; coverage is incomplete","id":"wikidata","license":"CC0-1.0","license_url":"https://www.wikidata.org/wiki/Wikidata:Licensing","name":"Wikidata structured data","retrieved_at":"2026-10-15T06:12:13.268459+00:00","status":"ok","url":"https://www.wikidata.org/"},{"coverage":"1199 checked identities; 0 unavailable records","id":"gleif","license":"CC0-1.0","license_url":"https://www.gleif.org/en/meta/lei-data-terms-of-use","name":"GLEIF legal entity reference data","retrieved_at":"2026-10-15T06:13:53.192764+00:00","status":"ok","url":"https://www.gleif.org/en/lei-data/gleif-api"},{"coverage":"4 selected series; gaps remain missing","id":"fed","license":"Public domain (selected government series)","license_url":"https://www.federalreserve.gov/disclaimer.htm","name":"Federal Reserve Board H.15","retrieved_at":"2026-10-22T06:11:44.244769+00:00","status":"ok","url":"https://www.federalreserve.gov/releases/h15/"},{"coverage":"9 selected series; gaps remain missing","id":"bls","license":"Public domain","license_url":"https://www.bls.gov/opub/copyright-information.htm","name":"Bureau of Labor Statistics","retrieved_at":"2026-10-22T06:11:45.514173+00:00","status":"ok","url":"https://www.bls.gov/developers/"},{"coverage":"2026 Q3: filings in this completed quarter; not a live transaction feed","id":"insiders","license":"SEC public-information reuse","license_url":"https://www.sec.gov/about/privacy-information","name":"SEC insider transactions","retrieved_at":"2026-10-15T06:12:09.068487+00:00","status":"ok","url":"https://www.sec.gov/data-research/sec-markets-data/insider-transactions-data-sets"}]}