{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-23-196872","form_type":"8-K","ticker":"PTEN","cik":"0000889900","company_name":"PATTERSON UTI ENERGY INC","filed_at":"2023-07-28T23:59:59+00:00","discovered_at":"2026-05-14T18:03:36.898851+00:00","generated_at":"2026-06-12T23:28:49.228391+00:00","sec_items":["1.01","8.01","9.01"],"event_type":"m_and_a","sentiment":"positive","materiality_score":0.7,"calibrated_materiality_score":0.7,"confidence":"high","headline":"Patterson-UTI and NexTier clear HSR waiting period for pending all-stock merger","bullets":["HSR Act waiting period expired July 27, 2023, satisfying one key closing condition for the merger.","Merger remains subject to shareholder approvals of both companies and other customary conditions.","The parties executed a first amendment to the merger agreement related to the Delaware voting standard for the charter amendment proposal.","Transaction remains on track to close in 2023; no financial terms revised."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-23-196872","json":"https://secwatch.observer/filing/0001193125-23-196872.json","markdown":"https://secwatch.observer/filing/0001193125-23-196872.md","text":"https://secwatch.observer/filing/0001193125-23-196872.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/889900/000119312523196872/0001193125-23-196872-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/889900/000119312523196872/d496875d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-12T23:28:49.228391+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":"961ca9cd89d08f1e4dec752468ade9a4ecf1e58b","claim":"PATTERSON UTI ENERGY INC amended First Amendment to the Merger Agreement with NexTier Oilfield Solutions Inc. (effective 2023-07-27).","evidence_excerpt":"On July 27, 2023, Patterson-UTI and NexTier entered into the First Amendment to the Merger Agreement (the “ Amendment ”) with respect to the new voting standard under Delaware law for the Patterson-UTI charter amendment proposal.","evidence_source":"SEC 8-K Item 1.01/1.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/889900/000119312523196872/0001193125-23-196872-index.htm","confidence":0.9,"family_label":"Material Agreements","details":[{"label":"Action","value":"amendment"},{"label":"Agreement","value":"merger"},{"label":"Counterparty","value":"NexTier Oilfield Solutions Inc."},{"label":"Effective","value":"2023-07-27"}],"fact_type":"material_agreement"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}