{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-23-259929","form_type":"8-K","ticker":null,"cik":"0001524741","company_name":"U.S. SILICA HOLDINGS, INC.","filed_at":"2023-10-20T23:59:59+00:00","discovered_at":"2026-05-14T18:03:29.362204+00:00","generated_at":"2026-06-09T18:27:07.670914+00:00","sec_items":["5.02","7.01","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.65,"calibrated_materiality_score":0.65,"confidence":"high","headline":"U.S. Silica terminates CFO Don Merril, appoints Kevin Hough as interim CFO","bullets":["CFO Donald A. Merril terminated without cause effective Oct 20, 2023; no disagreement on financial reporting.","Interim CFO Kevin Hough, previously VP & Corporate Controller since 2011, plans to retire in 2024; permanent search underway.","Hough's compensation: base salary $440k, target ABIP $375k prorated for 2023, sign-on cash $350k vesting May 1, 2024.","Hough will participate in CIC severance plan and indemnification agreement."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-23-259929","json":"https://secwatch.observer/filing/0001193125-23-259929.json","markdown":"https://secwatch.observer/filing/0001193125-23-259929.md","text":"https://secwatch.observer/filing/0001193125-23-259929.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1524741/000119312523259929/0001193125-23-259929-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1524741/000119312523259929/d563318d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-09T18:27:07.670914+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":"b8a2f8903c","claim":"Kevin Hough was appointed as Executive Vice President, Chief Financial Officer and Chief Accounting Officer at U.S. SILICA HOLDINGS, INC..","evidence_excerpt":"On October 18, 2023, Kevin Hough was appointed, effective October 20, 2023, to serve as interim Executive Vice President, Chief Financial Officer and Chief Accounting Officer of U.S. Silica Holdings, Inc.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1524741/000119312523259929/0001193125-23-259929-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Executive Vice President, Chief Financial Officer and Chief Accounting Officer"}],"fact_type":"executive_change"},{"claim_id":"de2b73e42b","claim":"Donald A. Merril departed as Chief Financial Officer at U.S. SILICA HOLDINGS, INC..","evidence_excerpt":"succeeding Donald A. Merril, who was terminated without cause effective as of October 20, 2023.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1524741/000119312523259929/0001193125-23-259929-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"terminated without cause"},{"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"}