{"filing":{"accession_number":"0001193125-26-240535","cik":"0001053507","ticker":"AMT","company_name":"AMERICAN TOWER CORP /MA/","form":"8-K","filing_date":"2026-05-27","report_date":null,"primary_document":"d913919d8k.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/1053507/000119312526240535/d913919d8k.htm"},"events":[{"id":8713,"run_id":7650,"accession_number":"0001193125-26-240535","anchor_item_number":"1.01","event_type":"other_material","event_domain":"catchall","is_material":true,"confidence":0.65,"summary":"American Tower completed a registered public offering of €750 million in senior unsecured notes due 2033, generating approximately $866.7 million in net proceeds. This significant debt issuance affects the company's capital structure and liquidity.","company_name":"AMERICAN TOWER CORP /MA/","ticker":"AMT","filing_date":"2026-05-27","form":"8-K","submitted_at":null,"items":[{"id":1878,"accession_number":"0001193125-26-240535","item_number":"1.01","item_title":null,"event_type":"ma_activity","event_domain":"operational","is_material":true,"confidence":0.45,"reasoning":"This disclosure describes completion of a registered public offering of €750 million in senior unsecured notes due 2033, generating approximately $866.7 million in net proceeds. While the Item 1.01 caption refers to \"Material Definitive Agreement,\" the substance is a debt issuance and capital-raising transaction. The event is material to investors as it affects the company's capital structure and liquidity, but it does not fit the core definition of ma_activity (acquisition, disposition, merger, or change of control). This is best classified as other_material, as it is a significant financing event that does not align with the more specific event types in the taxonomy.","classifier_version":"claude-haiku-4-5-20251001+prompt-9e0ffca5","taxonomy_version":"v1","classified_at":"2026-05-28T02:12:47.962534+00:00","company_name":"","ticker":null,"filing_date":""},{"id":1879,"accession_number":"0001193125-26-240535","item_number":"2.03","item_title":null,"event_type":"ma_activity","event_domain":"operational","is_material":true,"confidence":0.75,"reasoning":"Item 2.03 incorporates Item 1.01 by reference, which typically discloses material acquisitions, dispositions, mergers, or changes of control. The cross-reference structure indicates a significant M\u0026A transaction created direct financial obligations. Without the full Item 1.01 text, the incorporation-by-reference language strongly suggests ma_activity as the underlying event.","classifier_version":"claude-haiku-4-5-20251001+prompt-9e0ffca5","taxonomy_version":"v1","classified_at":"2026-05-28T02:12:47.962534+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":1878,"accession_number":"0001193125-26-240535","item_number":"1.01","item_title":null,"event_type":"ma_activity","event_domain":"operational","is_material":true,"confidence":0.45,"reasoning":"This disclosure describes completion of a registered public offering of €750 million in senior unsecured notes due 2033, generating approximately $866.7 million in net proceeds. While the Item 1.01 caption refers to \"Material Definitive Agreement,\" the substance is a debt issuance and capital-raising transaction. The event is material to investors as it affects the company's capital structure and liquidity, but it does not fit the core definition of ma_activity (acquisition, disposition, merger, or change of control). This is best classified as other_material, as it is a significant financing event that does not align with the more specific event types in the taxonomy.","classifier_version":"claude-haiku-4-5-20251001+prompt-9e0ffca5","taxonomy_version":"v1","classified_at":"2026-05-28T02:12:47.962534+00:00","company_name":"AMERICAN TOWER CORP /MA/","ticker":"AMT","filing_date":"2026-05-27"},{"id":1879,"accession_number":"0001193125-26-240535","item_number":"2.03","item_title":null,"event_type":"ma_activity","event_domain":"operational","is_material":true,"confidence":0.75,"reasoning":"Item 2.03 incorporates Item 1.01 by reference, which typically discloses material acquisitions, dispositions, mergers, or changes of control. The cross-reference structure indicates a significant M\u0026A transaction created direct financial obligations. Without the full Item 1.01 text, the incorporation-by-reference language strongly suggests ma_activity as the underlying event.","classifier_version":"claude-haiku-4-5-20251001+prompt-9e0ffca5","taxonomy_version":"v1","classified_at":"2026-05-28T02:12:47.962534+00:00","company_name":"AMERICAN TOWER CORP /MA/","ticker":"AMT","filing_date":"2026-05-27"}]}