{"schema_version":"secwatch.filing_event.v1","accession":"0001213900-23-079220","form_type":"8-K","ticker":null,"cik":"0001126975","company_name":"Magellan Midstream Partners, L.P.","filed_at":"2023-09-25T23:59:59+00:00","discovered_at":"2026-05-14T18:03:33.201268+00:00","generated_at":"2026-06-10T09:07:45.258071+00:00","sec_items":["1.02","2.01","3.01","3.03","5.01","5.02","9.01"],"event_type":"m_and_a","sentiment":"neutral","materiality_score":0.95,"calibrated_materiality_score":0.95,"confidence":"high","headline":"ONEOK completes acquisition of Magellan Midstream Partners; units converted to stock plus cash","bullets":["Each Magellan unit converted into 0.667 ONEOK shares plus $25 cash.","Magellan units delisted from NYSE as of September 25, 2023; Form 15 to be filed.","Credit facility terminated; all outstanding principal, interest and fees repaid.","All directors and named executive officers resigned; Pierce H. Norton II appointed CEO of general partner."],"urls":{"canonical":"https://secwatch.observer/filing/0001213900-23-079220","json":"https://secwatch.observer/filing/0001213900-23-079220.json","markdown":"https://secwatch.observer/filing/0001213900-23-079220.md","text":"https://secwatch.observer/filing/0001213900-23-079220.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1126975/000121390023079220/0001213900-23-079220-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1126975/000121390023079220/ea185726-8k_magellan.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-10T09:07:45.258071+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":"33338939cd","claim":"Stacy P. Methvin resigned as Director at Magellan Midstream Partners, L.P..","evidence_excerpt":"In accordance with the terms of the Merger Agreement, Mr. Aaron L. Milford, Mr. Chansoo Joung, Mr. Edward J. Guay, Mr. Walter R. Arnheim, Mr. James R. Montague, Mr. Barry R. Pearl, Mr. Sivasankaran Somasundaram, Ms. Stacy P. Methvin and Ms. Lori A. Gobillot resigned as directors of Magellan GP, LLC, the general partner of Magellan (the “General Partner”), effective as of the Effective Time.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1126975/000121390023079220/0001213900-23-079220-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"Director"}],"fact_type":"executive_change"},{"claim_id":"5536c25044","claim":"Barry R. Pearl resigned as Director at Magellan Midstream Partners, L.P..","evidence_excerpt":"In accordance with the terms of the Merger Agreement, Mr. Aaron L. Milford, Mr. Chansoo Joung, Mr. Edward J. Guay, Mr. Walter R. Arnheim, Mr. James R. Montague, Mr. Barry R. Pearl, Mr. Sivasankaran Somasundaram, Ms. Stacy P. Methvin and Ms. Lori A. Gobillot resigned as directors of Magellan GP, LLC, the general partner of Magellan (the “General Partner”), effective as of the Effective Time.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1126975/000121390023079220/0001213900-23-079220-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"Director"}],"fact_type":"executive_change"},{"claim_id":"5c0e03d78b","claim":"Sivasankaran Somasundaram resigned as Director at Magellan Midstream Partners, L.P..","evidence_excerpt":"In accordance with the terms of the Merger Agreement, Mr. Aaron L. Milford, Mr. Chansoo Joung, Mr. Edward J. Guay, Mr. Walter R. Arnheim, Mr. James R. Montague, Mr. Barry R. Pearl, Mr. Sivasankaran Somasundaram, Ms. Stacy P. Methvin and Ms. Lori A. Gobillot resigned as directors of Magellan GP, LLC, the general partner of Magellan (the “General Partner”), effective as of the Effective Time.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1126975/000121390023079220/0001213900-23-079220-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"Director"}],"fact_type":"executive_change"},{"claim_id":"75b411df5b","claim":"Pierce H. Norton II was appointed as President and Chief Executive Officer at Magellan Midstream Partners, L.P..","evidence_excerpt":"Effective as of the Effective Time, Pierce H. Norton II was appointed President and Chief Executive Officer of the General Partner","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1126975/000121390023079220/0001213900-23-079220-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"President and Chief Executive Officer"}],"fact_type":"executive_change"},{"claim_id":"89e8ba58b6","claim":"Chansoo Joung resigned as Director at Magellan Midstream Partners, L.P..","evidence_excerpt":"In accordance with the terms of the Merger Agreement, Mr. Aaron L. Milford, Mr. Chansoo Joung, Mr. Edward J. Guay, Mr. Walter R. Arnheim, Mr. James R. Montague, Mr. Barry R. Pearl, Mr. Sivasankaran Somasundaram, Ms. Stacy P. Methvin and Ms. Lori A. Gobillot resigned as directors of Magellan GP, LLC, the general partner of Magellan (the “General Partner”), effective as of the Effective Time.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1126975/000121390023079220/0001213900-23-079220-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"Director"}],"fact_type":"executive_change"},{"claim_id":"8b757e2743","claim":"Aaron L. Milford resigned as Director at Magellan Midstream Partners, L.P..","evidence_excerpt":"In accordance with the terms of the Merger Agreement, Mr. Aaron L. Milford, Mr. Chansoo Joung, Mr. Edward J. Guay, Mr. Walter R. Arnheim, Mr. James R. Montague, Mr. Barry R. Pearl, Mr. Sivasankaran Somasundaram, Ms. Stacy P. Methvin and Ms. Lori A. Gobillot resigned as directors of Magellan GP, LLC, the general partner of Magellan (the “General Partner”), effective as of the Effective Time.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1126975/000121390023079220/0001213900-23-079220-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"Director"}],"fact_type":"executive_change"},{"claim_id":"90c2c674b1","claim":"Walter R. Arnheim resigned as Director at Magellan Midstream Partners, L.P..","evidence_excerpt":"In accordance with the terms of the Merger Agreement, Mr. Aaron L. Milford, Mr. Chansoo Joung, Mr. Edward J. Guay, Mr. Walter R. Arnheim, Mr. James R. Montague, Mr. Barry R. Pearl, Mr. Sivasankaran Somasundaram, Ms. Stacy P. Methvin and Ms. Lori A. Gobillot resigned as directors of Magellan GP, LLC, the general partner of Magellan (the “General Partner”), effective as of the Effective Time.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1126975/000121390023079220/0001213900-23-079220-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"Director"}],"fact_type":"executive_change"},{"claim_id":"a42a0fb49d","claim":"James R. Montague resigned as Director at Magellan Midstream Partners, L.P..","evidence_excerpt":"In accordance with the terms of the Merger Agreement, Mr. Aaron L. Milford, Mr. Chansoo Joung, Mr. Edward J. Guay, Mr. Walter R. Arnheim, Mr. James R. Montague, Mr. Barry R. Pearl, Mr. Sivasankaran Somasundaram, Ms. Stacy P. Methvin and Ms. Lori A. Gobillot resigned as directors of Magellan GP, LLC, the general partner of Magellan (the “General Partner”), effective as of the Effective Time.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1126975/000121390023079220/0001213900-23-079220-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"Director"}],"fact_type":"executive_change"},{"claim_id":"a7ee69e296","claim":"Lori A. Gobillot resigned as Director at Magellan Midstream Partners, L.P..","evidence_excerpt":"In accordance with the terms of the Merger Agreement, Mr. Aaron L. Milford, Mr. Chansoo Joung, Mr. Edward J. Guay, Mr. Walter R. Arnheim, Mr. James R. Montague, Mr. Barry R. Pearl, Mr. Sivasankaran Somasundaram, Ms. Stacy P. Methvin and Ms. Lori A. Gobillot resigned as directors of Magellan GP, LLC, the general partner of Magellan (the “General Partner”), effective as of the Effective Time.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1126975/000121390023079220/0001213900-23-079220-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"Director"}],"fact_type":"executive_change"},{"claim_id":"c45a51cf83","claim":"Edward J. Guay resigned as Director at Magellan Midstream Partners, L.P..","evidence_excerpt":"In accordance with the terms of the Merger Agreement, Mr. Aaron L. Milford, Mr. Chansoo Joung, Mr. Edward J. Guay, Mr. Walter R. Arnheim, Mr. James R. Montague, Mr. Barry R. Pearl, Mr. Sivasankaran Somasundaram, Ms. Stacy P. Methvin and Ms. Lori A. Gobillot resigned as directors of Magellan GP, LLC, the general partner of Magellan (the “General Partner”), effective as of the Effective Time.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1126975/000121390023079220/0001213900-23-079220-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"Director"}],"fact_type":"executive_change"},{"claim_id":"c7bdd6c604","claim":"Walter S. Hulse III was appointed as Chief Financial Officer, Treasurer and Executive Vice President, Investor Relations and Corporate Development at Magellan Midstream Partners, L.P..","evidence_excerpt":"Walter S. Hulse III was appointed Chief Financial Officer, Treasurer and Executive Vice President, Investor Relations and Corporate Development of the General Partner.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1126975/000121390023079220/0001213900-23-079220-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Chief Financial Officer, Treasurer and Executive Vice President, Investor Relations and Corporate Development"}],"fact_type":"executive_change"},{"claim_id":"ec759859290c8a78c65e9e857c3f90144d57705d","claim":"Magellan Midstream Partners, L.P. underwent a change of control involving ONEOK, Inc. (closed 2023-09-25).","evidence_excerpt":"On September 25, 2023 (the “Closing Date”), Otter Merger Sub, LLC (“Merger Sub”), a Delaware limited liability company and wholly owned direct, subsidiary of ONEOK, Inc., an Oklahoma corporation (“ONEOK”), completed its merger (the “Merger”) with and into Magellan Midstream Partners, L.P. a Delaware limited partnership (“Magellan”), as a result of which Magellan became a wholly owned, direct, subsidiary of ONEOK.","evidence_source":"SEC 8-K Item 2.01/5.01","evidence_url":"https://www.sec.gov/Archives/edgar/data/1126975/000121390023079220/0001213900-23-079220-index.htm","confidence":0.9,"family_label":"M&A Transactions","details":[{"label":"Action","value":"change of control"},{"label":"Counterparty","value":"ONEOK, Inc."},{"label":"Closing","value":"2023-09-25"}],"fact_type":"ma_transaction"},{"claim_id":"a957e46d43ef40b72cb8dafbbc24e16277047f35","claim":"Magellan Midstream Partners, L.P. terminated Credit Agreement with Wells Fargo Bank, National Association, as Administrative Agent, and the other lenders party thereto (effective 2023-09-25).","evidence_excerpt":"on September 25, 2023, Magellan, at the direction of ONEOK, terminated all outstanding lender commitments, including commitments of the lenders to issue letters of credit, under the Second Amended and Restated Credit Agreement","evidence_source":"SEC 8-K Item 1.01/1.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1126975/000121390023079220/0001213900-23-079220-index.htm","confidence":0.9,"family_label":"Material Agreements","details":[{"label":"Action","value":"termination"},{"label":"Agreement","value":"credit facility"},{"label":"Counterparty","value":"Wells Fargo Bank, National Association, as Administrative Agent, and the other lenders party thereto"},{"label":"Effective","value":"2023-09-25"}],"fact_type":"material_agreement"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}