{"schema_version":"secwatch.filing_event.v1","accession":"0001441683-21-000094","form_type":"8-K","ticker":"APPN","cik":"0001441683","company_name":"APPIAN CORP","filed_at":"2021-12-07T23:59:59+00:00","discovered_at":"2026-05-14T18:04:12.599908+00:00","generated_at":"2026-06-28T03:07:22.400912+00:00","sec_items":["2.02","5.02","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.55,"calibrated_materiality_score":0.55,"confidence":"high","headline":"Appian CFO Mark Lynch to retire March 2022; CAO appointed; guidance reaffirmed","bullets":["Mark Lynch to retire as CFO effective March 31, 2022; will assist with transition and 10-K filing.","Mark Matheos appointed Chief Accounting Officer effective Dec 31, 2021; salary $450K, bonus $100K, RSU $250K.","Company reaffirms Q4 and full-year 2021 guidance previously provided on Nov 4, 2021.","Lynch's retirement not due to any disagreement on financial statements or operations."],"urls":{"canonical":"https://secwatch.observer/filing/0001441683-21-000094","json":"https://secwatch.observer/filing/0001441683-21-000094.json","markdown":"https://secwatch.observer/filing/0001441683-21-000094.md","text":"https://secwatch.observer/filing/0001441683-21-000094.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1441683/000144168321000094/0001441683-21-000094-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1441683/000144168321000094/appn-20211207.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-28T03:07:22.400912+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":"dc711aef08","claim":"Mark Lynch departed as Chief Financial Officer at APPIAN CORP.","evidence_excerpt":"On December 1, 2021, Mark Lynch, Chief Financial Officer, notified the Company he plans to retire effective March 31, 2022.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1441683/000144168321000094/0001441683-21-000094-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"retire"},{"label":"Role","value":"Chief Financial Officer"}],"fact_type":"executive_change"},{"claim_id":"e7ff185f34","claim":"Mark Matheos was appointed as Chief Accounting Officer at APPIAN CORP.","evidence_excerpt":"On December 1, 2021, the Board of Directors approved the appointment of Mark Matheos as Chief Accounting Officer, effective December 31, 2021.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1441683/000144168321000094/0001441683-21-000094-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Chief Accounting Officer"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}