{"schema_version":"secwatch.filing_event.v1","accession":"0001493152-23-000906","form_type":"8-K","ticker":"XTNT","cik":"0001453593","company_name":"Xtant Medical Holdings, Inc.","filed_at":"2023-01-09T23:59:59+00:00","discovered_at":"2026-05-14T18:03:45.070702+00:00","generated_at":"2026-06-20T17:40:57.485278+00:00","sec_items":["5.02","7.01","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.4,"calibrated_materiality_score":0.4,"confidence":"high","headline":"Xtant Medical appoints Mark Schallenberger as COO effective Jan 16, 2023","bullets":["Mark Schallenberger, previously COO at Surgenex, appointed COO at Xtant Medical effective Jan 16, 2023.","Annual base salary of $400,000 with bonus of up to 50% of base salary; option for 105,000 shares and RSUs for 89,000 shares.","Role is newly created, focused on operational modernization and product development.","Previously served at Xtant (formerly Bacterin) as Director of Scientific Affairs from 2010-2016."],"urls":{"canonical":"https://secwatch.observer/filing/0001493152-23-000906","json":"https://secwatch.observer/filing/0001493152-23-000906.json","markdown":"https://secwatch.observer/filing/0001493152-23-000906.md","text":"https://secwatch.observer/filing/0001493152-23-000906.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1453593/000149315223000906/0001493152-23-000906-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1453593/000149315223000906/form8-k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-20T17:40:57.485278+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":"faa7558f99","claim":"Mark A. Schallenberger was appointed as Chief Operations Officer at Xtant Medical Holdings, Inc..","evidence_excerpt":"On January 9, 2023, Xtant Medical Holdings, Inc. (the “Company”) announced the appointment of Mark A. Schallenberger as Chief Operations Officer, effective as of January 16, 2023.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1453593/000149315223000906/0001493152-23-000906-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Chief Operations Officer"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}