{"schema_version":"secwatch.filing_event.v1","accession":"0001104659-22-037018","form_type":"8-K","ticker":"PTGX","cik":"0001377121","company_name":"Protagonist Therapeutics, Inc","filed_at":"2022-03-23T23:59:59+00:00","discovered_at":"2026-05-14T18:04:06.208934+00:00","generated_at":"2026-06-26T19:35:10.771939+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"negative","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"Protagonist Therapeutics CFO Don Kalkofen resigns effective April 1, 2022","bullets":["CFO Don Kalkofen submitted resignation effective April 1, 2022.","He will cease as principal financial and accounting officer upon resignation.","Company has initiated a search for a replacement CFO."],"urls":{"canonical":"https://secwatch.observer/filing/0001104659-22-037018","json":"https://secwatch.observer/filing/0001104659-22-037018.json","markdown":"https://secwatch.observer/filing/0001104659-22-037018.md","text":"https://secwatch.observer/filing/0001104659-22-037018.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1377121/000110465922037018/0001104659-22-037018-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1377121/000110465922037018/tm2210222d1_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-26T19:35:10.771939+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":"9057ae09fd","claim":"Don Kalkofen departed as Chief Financial Officer at Protagonist Therapeutics, Inc.","evidence_excerpt":"On March 17, 2022, Don Kalkofen, the Chief Financial Officer of Protagonist Therapeutics, Inc. (the “Company”), submitted his notice of resignation from his position as Chief Financial Officer of the Company to be effective on April 1, 2022.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1377121/000110465922037018/0001104659-22-037018-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"submitted notice of resignation"},{"label":"Role","value":"Chief Financial Officer"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}