{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-23-227267","form_type":"8-K","ticker":null,"cik":"0001708493","company_name":"Harpoon Therapeutics, Inc.","filed_at":"2023-09-01T23:59:59+00:00","discovered_at":"2026-05-14T18:03:34.936846+00:00","generated_at":"2026-06-11T00:36:14.178917+00:00","sec_items":["5.03","9.01"],"event_type":"other_material","sentiment":"negative","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"Harpoon Therapeutics to effect 1-for-10 reverse stock split to regain Nasdaq compliance","bullets":["Reverse stock split ratio 1-for-10, effective at 5:00 p.m. ET on September 1, 2023.","Outstanding shares reduced from ~40.3 million to ~4.0 million shares.","Common stock will trade on Nasdaq on a split-adjusted basis from September 5, 2023, under ticker HARP.","No fractional shares issued; stockholders will receive cash for fractional interests.","CUSIP changed to 41358P205; par value remains $0.0001 per share."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-23-227267","json":"https://secwatch.observer/filing/0001193125-23-227267.json","markdown":"https://secwatch.observer/filing/0001193125-23-227267.md","text":"https://secwatch.observer/filing/0001193125-23-227267.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1708493/000119312523227267/0001193125-23-227267-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1708493/000119312523227267/d544436d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-11T00:36:14.178917+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":"a9509a41abcc8e294e670a87a05157d95ff66607","claim":"Harpoon Therapeutics, Inc.: Filing of Certificate of Amendment to effect a 1-for-10 reverse stock split of common stock, approved by stockholders and the Board, to regain Nasdaq compliance (effective 2023-09-01).","evidence_excerpt":"On September 1, 2023, the Company filed with the Secretary of State of the State of Delaware a Certificate of Amendment to its amended and restated certificate of incorporation (the “ Charter Amendment ”) to effect the Reverse Stock Split.","evidence_source":"SEC 8-K Item 5.03/5.05/5.06","evidence_url":"https://www.sec.gov/Archives/edgar/data/1708493/000119312523227267/0001193125-23-227267-index.htm","confidence":0.9,"family_label":"Governance Changes","details":[{"label":"Change","value":"charter amendment"},{"label":"Effective","value":"2023-09-01"}],"fact_type":"governance_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}