{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-24-028405","form_type":"8-K","ticker":"MKSI","cik":"0001049502","company_name":"MKS INC","filed_at":"2024-02-08T23:59:59+00:00","discovered_at":"2026-05-14T18:03:23.226209+00:00","generated_at":"2026-06-06T05:13:40.697604+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.55,"calibrated_materiality_score":0.55,"confidence":"high","headline":"MKS Instruments appoints Michelle McCarthy as VP and Chief Accounting Officer effective March 4, 2024","bullets":["Michelle McCarthy to replace Seth Bagshaw as principal accounting officer; Bagshaw remains CFO until retirement on April 1, 2024.","McCarthy receives $400k base salary, 50% bonus target, $350k equity for 2024, plus $300k sign-on cash and $400k sign-on RSUs.","Sign-on equity vests in three equal annual installments; grants expected April 15, 2024.","McCarthy previously served as SVP & CAO at Mercury Systems and as Corporate Controller at Analog Devices."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-24-028405","json":"https://secwatch.observer/filing/0001193125-24-028405.json","markdown":"https://secwatch.observer/filing/0001193125-24-028405.md","text":"https://secwatch.observer/filing/0001193125-24-028405.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1049502/000119312524028405/0001193125-24-028405-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1049502/000119312524028405/d758144d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-06T05:13:40.697604+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":"0c8938d08f","claim":"Michelle M. McCarthy was appointed as Vice President and Chief Accounting Officer at MKS INC.","evidence_excerpt":"On February 5, 2024, the Board of Directors (the “Board”) of MKS Instruments, Inc. (the “Company”) appointed Michelle M. McCarthy to serve as Vice President and Chief Accounting Officer of the Company, effective March 4, 2024.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1049502/000119312524028405/0001193125-24-028405-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Vice President and Chief Accounting Officer"}],"fact_type":"executive_change"},{"claim_id":"6ee0839f8e","claim":"Seth H. Bagshaw retired as Executive Vice President, Chief Financial Officer and Treasurer at MKS INC.","evidence_excerpt":"Mr. Bagshaw will continue to serve as the principal financial officer of the Company until his previously announced retirement as Executive Vice President, Chief Financial Officer and Treasurer of the Company, effective April 1, 2024.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1049502/000119312524028405/0001193125-24-028405-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"retired"},{"label":"Role","value":"Executive Vice President, Chief Financial Officer and Treasurer"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}