{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-23-088185","form_type":"8-K","ticker":"DNTH","cik":"0001690585","company_name":"Dianthus Therapeutics, Inc. /DE/","filed_at":"2023-03-31T23:59:59+00:00","discovered_at":"2026-05-14T18:03:46.159697+00:00","generated_at":"2026-06-17T08:00:53.908710+00:00","sec_items":["1.01","3.03","5.03","8.01","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"Magenta Therapeutics adopts one-year stockholder rights plan to support strategic review","bullets":["Rights plan triggers at 10% beneficial ownership; each right entitles holder to purchase preferred stock units at $3.75.","Plan expires March 30, 2024; includes qualifying offer clause allowing 10% of stockholders to call special meeting.","Board previously announced comprehensive strategic review to maximize shareholder value; rights plan provides time for review.","No dead-hand, slow-hand, or similar features; Board can redeem rights for $0.001 per right until trigger."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-23-088185","json":"https://secwatch.observer/filing/0001193125-23-088185.json","markdown":"https://secwatch.observer/filing/0001193125-23-088185.md","text":"https://secwatch.observer/filing/0001193125-23-088185.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1690585/000119312523088185/0001193125-23-088185-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1690585/000119312523088185/d436260d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-17T08:00:53.908710+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":"08144dabba304acef620688da82e615209be521b","claim":"Dianthus Therapeutics, Inc. /DE/: The Board approved a Certificate of Designations to create a new series of preferred stock, Series A Junior Participating Cumulative Preferred Stock, in connection with the adoption of a Rights Agreement (effective 2023-03-31).","evidence_excerpt":"In connection with the adoption of the Rights Agreement described in Item 1.01 above, the Board of Directors of the Company approved a Certificate of Designations of Series A Junior Participating Cumulative Preferred Stock (the “Certificate of Designations”). The Certificate of Designations will be filed with the Secretary of State of Delaware on March 31, 2023.","evidence_source":"SEC 8-K Item 5.03/5.05/5.06","evidence_url":"https://www.sec.gov/Archives/edgar/data/1690585/000119312523088185/0001193125-23-088185-index.htm","confidence":0.9,"family_label":"Governance Changes","details":[{"label":"Change","value":"charter amendment"},{"label":"Effective","value":"2023-03-31"}],"fact_type":"governance_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}