{"schema_version":"secwatch.filing_event.v1","accession":"0001104659-26-069164","form_type":"8-K","ticker":"PAGP","cik":"0001581990","company_name":"PLAINS GP HOLDINGS LP","filed_at":"2026-06-02T10:05:30+00:00","discovered_at":"2026-06-02T10:10:00.237587+00:00","generated_at":"2026-06-02T10:11:24.406469+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.4,"calibrated_materiality_score":0.4,"confidence":"high","headline":"Plains GP Holdings announces CAO succession: Montgomery promoted, Herbold retiring","bullets":["Russ Montgomery promoted to VP, Accounting and CAO, effective September 1, 2026.","Chris Herbold retiring as SVP, Finance and CAO on August 31, 2026.","Montgomery, age 50, served as VP, Controller since 2019; previously Controller and other roles at PAA."],"urls":{"canonical":"https://secwatch.observer/filing/0001104659-26-069164","json":"https://secwatch.observer/filing/0001104659-26-069164.json","markdown":"https://secwatch.observer/filing/0001104659-26-069164.md","text":"https://secwatch.observer/filing/0001104659-26-069164.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1581990/000110465926069164/0001104659-26-069164-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1581990/000110465926069164/tm2614304d4_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-02T10:11:24.406469+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":"74c64afb2a","claim":"Russ Montgomery was appointed as Vice President, Accounting and Chief Accounting Officer at PLAINS GP HOLDINGS LP.","evidence_excerpt":"effective September 1, 2026, Russ Montgomery will be promoted to the position of Vice President, Accounting and Chief Accounting Officer of Plains All American GP LLC, the general partner of PAA, and PAA GP Holdings LLC, the general partner of PAGP.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1581990/000110465926069164/0001104659-26-069164-index.htm","confidence":0.95},{"claim_id":"7db74abbf2","claim":"Chris Herbold departed as Senior Vice President, Finance and Chief Accounting Officer at PLAINS GP HOLDINGS LP.","evidence_excerpt":"Chris Herbold, who previously served as Senior Vice President, Finance and Chief Accounting Officer of PAA and PAGP, is retiring from the company on August 31, 2026.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1581990/000110465926069164/0001104659-26-069164-index.htm","confidence":0.95}],"comparable_filings":[{"accession":"0001104659-26-069317","ticker":null,"company_name":"Cornerstone Building Brands, Inc.","filed_at":"2026-06-02T14:32:08+00:00","headline":"Cornerstone Building Brands names Richard Dirkson as Corporate Controller; CAO departs","event_type":"leadership","sec_items":["5.02","5.07"],"materiality_score":0.5,"calibrated_materiality_score":0.5,"match_reasons":["same fact type: executive_change","same SEC item: 5.02","same event type: leadership","similar materiality"],"urls":{"canonical":"https://secwatch.observer/filing/0001104659-26-069317","json":"https://secwatch.observer/filing/0001104659-26-069317.json","markdown":"https://secwatch.observer/filing/0001104659-26-069317.md","edgar_index":"https://www.sec.gov/Archives/edgar/data/883902/000110465926069317/0001104659-26-069317-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/883902/000110465926069317/tm2616548d1_8k.htm"},"side_by_side_evidence":{"fact_type":"executive_change","source_excerpt":"effective September 1, 2026, Russ Montgomery will be promoted to the position of Vice President, Accounting and Chief Accounting Officer of Plains All American GP LLC, the general partner of PAA, and PAA GP Holdings LLC, the general partner of PAGP.","source_evidence_url":"https://www.sec.gov/Archives/edgar/data/1581990/000110465926069164/0001104659-26-069164-index.htm","comparable_excerpt":"On May 27, 2026, the Company appointed Richard Dirkson as Senior Vice President, Corporate Controller (principal accounting officer) of the Company, effective May 28, 2026.","comparable_evidence_url":"https://www.sec.gov/Archives/edgar/data/883902/000110465926069317/0001104659-26-069317-index.htm"}},{"accession":"0001129928-26-000039","ticker":"ONCY","company_name":"ONCOLYTICS BIOTECH INC","filed_at":"2026-06-02T13:02:48+00:00","headline":"Oncolytics appoints Steve Glover to board, promotes John McAdory to COO","event_type":"leadership","sec_items":["5.02","8.01","9.01"],"materiality_score":0.5,"calibrated_materiality_score":0.5,"match_reasons":["same fact type: executive_change","same SEC item: 5.02","same event type: leadership","similar materiality"],"urls":{"canonical":"https://secwatch.observer/filing/0001129928-26-000039","json":"https://secwatch.observer/filing/0001129928-26-000039.json","markdown":"https://secwatch.observer/filing/0001129928-26-000039.md","edgar_index":"https://www.sec.gov/Archives/edgar/data/1129928/000112992826000039/0001129928-26-000039-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1129928/000112992826000039/oncy-20260602.htm"},"side_by_side_evidence":{"fact_type":"executive_change","source_excerpt":"effective September 1, 2026, Russ Montgomery will be promoted to the position of Vice President, Accounting and Chief Accounting Officer of Plains All American GP LLC, the general partner of PAA, and PAA GP Holdings LLC, the general partner of PAGP.","source_evidence_url":"https://www.sec.gov/Archives/edgar/data/1581990/000110465926069164/0001104659-26-069164-index.htm","comparable_excerpt":"appointed John McAdory as Chief Operating Officer of the Company","comparable_evidence_url":"https://www.sec.gov/Archives/edgar/data/1129928/000112992826000039/0001129928-26-000039-index.htm"}},{"accession":"0001193125-26-252624","ticker":"ACHV","company_name":"ACHIEVE LIFE SCIENCES, INC.","filed_at":"2026-06-02T12:51:39+00:00","headline":"Achieve Life Sciences appoints Jeff Farrow and Dr. Reid Waldman to Board","event_type":"leadership","sec_items":["5.02"],"materiality_score":0.45,"calibrated_materiality_score":0.45,"match_reasons":["same fact type: executive_change","same SEC item: 5.02","same event type: leadership","similar materiality"],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-26-252624","json":"https://secwatch.observer/filing/0001193125-26-252624.json","markdown":"https://secwatch.observer/filing/0001193125-26-252624.md","edgar_index":"https://www.sec.gov/Archives/edgar/data/949858/000119312526252624/0001193125-26-252624-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/949858/000119312526252624/achv-20260529.htm"},"side_by_side_evidence":{"fact_type":"executive_change","source_excerpt":"effective September 1, 2026, Russ Montgomery will be promoted to the position of Vice President, Accounting and Chief Accounting Officer of Plains All American GP LLC, the general partner of PAA, and PAA GP Holdings LLC, the general partner of PAGP.","source_evidence_url":"https://www.sec.gov/Archives/edgar/data/1581990/000110465926069164/0001104659-26-069164-index.htm","comparable_excerpt":"the Board of Directors (the “Board”) of Achieve Life Sciences, Inc. (the “Company”) appointed Jeff Farrow and Reid Waldman, M.D. (together, the “Incoming Directors”), as directors, effective as of such date.","comparable_evidence_url":"https://www.sec.gov/Archives/edgar/data/949858/000119312526252624/0001193125-26-252624-index.htm"}},{"accession":"0001193125-26-252616","ticker":"GOOD","company_name":"GLADSTONE COMMERCIAL CORP","filed_at":"2026-06-02T12:45:17+00:00","headline":"Gladstone Commercial elects George Stelljes as director; board expands to eight","event_type":"leadership","sec_items":["5.02","7.01","9.01"],"materiality_score":0.3,"calibrated_materiality_score":0.3,"match_reasons":["same fact type: executive_change","same SEC item: 5.02","same event type: leadership","similar 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Corporation (the “Company”) elected George “Chip” Stelljes, III to the Board, effective June 1, 2026.","comparable_evidence_url":"https://www.sec.gov/Archives/edgar/data/1321741/000119312526252618/0001193125-26-252618-index.htm"}},{"accession":"0001568651-26-000048","ticker":"OSCR","company_name":"Oscar Health, Inc.","filed_at":"2026-06-02T10:31:58+00:00","headline":"Oscar Health Co-Founder Schlosser transitions from CTO to Advisor to CEO","event_type":"leadership","sec_items":["5.02"],"materiality_score":0.5,"calibrated_materiality_score":0.5,"match_reasons":["same fact type: executive_change","same SEC item: 5.02","same event type: leadership","similar 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Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}