{"filing":{"accession_number":"0001654954-26-008615","cik":"0000901832","ticker":"AZN","company_name":"ASTRAZENECA PLC","form":"6-K","filing_date":"2026-09-29","report_date":"2026-09-29","primary_document":"a6704w.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/901832/000165495426008615/a6704w.htm"},"events":[{"id":35571,"run_id":32770,"accession_number":"0001654954-26-008615","anchor_item_number":null,"event_type":"ma_activity","event_domain":"operational","is_material":true,"confidence":0.92,"summary":"AstraZeneca announces a $2 billion equity investment in Summit Therapeutics Inc., acquiring approximately 12.0% of Summit's outstanding common stock (10.6% fully diluted). This constitutes a material acquisition of a significant equity stake coupled with a strategic clinical collaboration agreement to develop and commercialize ivonescimab in combination with AstraZeneca's ADC portfolio across multiple cancer indications. The investment and collaboration represent a material change of control interest and strategic transaction.","company_name":"ASTRAZENECA PLC","ticker":"AZN","filing_date":"2026-09-29","form":"6-K","submitted_at":null,"items":null}],"classifications":[{"id":39662,"accession_number":"0001654954-26-008615","item_number":null,"item_title":null,"event_type":"ma_activity","event_domain":"operational","is_material":true,"confidence":0.92,"reasoning":"AstraZeneca announces a $2 billion equity investment in Summit Therapeutics Inc., acquiring approximately 12.0% of Summit's outstanding common stock (10.6% fully diluted). This constitutes a material acquisition of a significant equity stake coupled with a strategic clinical collaboration agreement to develop and commercialize ivonescimab in combination with AstraZeneca's ADC portfolio across multiple cancer indications. The investment and collaboration represent a material change of control interest and strategic transaction.","classifier_version":"claude-haiku-4-5-20251001+prompt-6be895f9","taxonomy_version":"v1.3","classified_at":"2026-09-29T10:42:36.586118+00:00","company_name":"ASTRAZENECA PLC","ticker":"AZN","filing_date":"2026-09-29"}]}