{"schema_version":"secwatch.filing_event.v1","accession":"0001759631-22-000055","form_type":"8-K","ticker":"HYLN","cik":"0001759631","company_name":"Hyliion Holdings Corp.","filed_at":"2022-12-21T23:59:59+00:00","discovered_at":"2026-05-14T18:03:52.011166+00:00","generated_at":"2026-06-21T00:57:43.314871+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"negative","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"Hyliion Holdings board chair Edward Olkkola dies; Jeffrey Craig appointed as new chair","bullets":["Edward Olkkola, Board Chair since Oct 2020, died on Dec 15, 2022.","Board reduced size from 10 to 9 members, effective Dec 21, 2022.","Jeffrey Craig appointed as new Chair of the Board on Dec 21, 2022."],"urls":{"canonical":"https://secwatch.observer/filing/0001759631-22-000055","json":"https://secwatch.observer/filing/0001759631-22-000055.json","markdown":"https://secwatch.observer/filing/0001759631-22-000055.md","text":"https://secwatch.observer/filing/0001759631-22-000055.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1759631/000175963122000055/0001759631-22-000055-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1759631/000175963122000055/hyln-20221221.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-21T00:57:43.314871+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":"76decf9e14","claim":"Edward Olkkola departed as Board Chair at Hyliion Holdings Corp..","evidence_excerpt":"On December 15, 2022, Hyliion Holdings Corp. (the “Company”) was informed of the death of Edward Olkkola, a member of the Board of Directors (the “Board”) of the Company.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1759631/000175963122000055/0001759631-22-000055-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"died"},{"label":"Role","value":"Board Chair"}],"fact_type":"executive_change"},{"claim_id":"b39c92aa80","claim":"Jeffrey Craig was appointed as Chair of the Board at Hyliion Holdings Corp..","evidence_excerpt":"The Board also appointed Jeffrey Craig as Chair of the Board.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1759631/000175963122000055/0001759631-22-000055-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Chair of the Board"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}