{"schema_version":"secwatch.filing_event.v1","accession":"0000950142-26-000532","form_type":"8-K","ticker":"MARA","cik":"0001507605","company_name":"MARA Holdings, Inc.","filed_at":"2026-02-26T23:59:59+00:00","discovered_at":"2026-05-14T18:02:35.265823+00:00","generated_at":"2026-05-15T23:32:31.004083+00:00","sec_items":["1.01","7.01","9.01"],"event_type":"other_material","sentiment":"positive","materiality_score":0.78,"calibrated_materiality_score":0.78,"confidence":"high","headline":"MARA partners with Starwood to develop 1 GW+ AI/hyperscale data centers on mining sites","bullets":["Near-term IT capacity target of ~1 GW, with pathway to >2.5 GW.","MARA contributes energy-rich mining sites; Starwood leads design, development, tenant sourcing.","Facilities will support both Bitcoin mining and AI compute, allowing workload toggling.","MARA retains mining rights or compensation if sites are contributed to JV or sold.","Partnership expected to accelerate MARA's expansion into high-performance computing."],"urls":{"canonical":"https://secwatch.observer/filing/0000950142-26-000532","json":"https://secwatch.observer/filing/0000950142-26-000532.json","markdown":"https://secwatch.observer/filing/0000950142-26-000532.md","text":"https://secwatch.observer/filing/0000950142-26-000532.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1507605/000095014226000532/0000950142-26-000532-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1507605/000095014226000532/eh260744046_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-15T23:32:31.004083+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":[{"claim_id":"06db6a48c569d0af291f296159c057831d1ead88","claim":"MARA Holdings, Inc. entered into Strategic Agreement with Starwood Capital Group Global III, L.P. (effective 2026-02-26).","evidence_excerpt":"On February 26, 2026, MARA USA Corporation (the “Company”), a wholly owned subsidiary of MARA Holdings, Inc. (“MARA”), entered into a Strategic Agreement (the “Strategic Agreement”) with Starwood Capital Group Global III, L.P. (“Starwood”) pursuant to which the Company and Starwood have agreed to, amongst other things, develop, lease and market a specified list of the Company’s existing bitcoin mining data centers","evidence_source":"SEC 8-K Item 1.01/1.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1507605/000095014226000532/0000950142-26-000532-index.htm","confidence":0.9,"family_label":"Material Agreements","details":[{"label":"Action","value":"entry"},{"label":"Counterparty","value":"Starwood Capital Group Global III, L.P."},{"label":"Effective","value":"2026-02-26"}],"fact_type":"material_agreement"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}