---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-23-046377"
form_type: "8-K/A"
ticker: "PTEN"
cik: "0000889900"
company_name: "PATTERSON UTI ENERGY INC"
filed_at: "2023-09-05T23:59:59+00:00"
generated_at: "2026-06-11T00:18:27.095149+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "low"
source: SEC EDGAR
---

# Patterson-UTI files historical and pro forma financials for NexTier and Ulterra acquisitions

## Summary
- NexTier audited financials (2022, 2021, 2020) and unaudited H1 2023 filed; Ulterra audited 2022 and unaudited H1 2023 filed.
- Pro forma combined financial data as of June 30,2023, for H1 2023 and FY2022 included.
- Financial statements are incorporated by reference to prior NexTier/Tier filings and previously filed Ulterra audited statements.
- Amendment solely supplements Item 9.01; no other changes from prior 8-Ks.

## SEC filing metadata
- accession: 0000950170-23-046377
- form_type: 8-K/A
- ticker: PTEN
- cik: 0000889900
- company_name: PATTERSON UTI ENERGY INC
- filed_at: 2023-09-05T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: low
- sec_items: 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/889900/000095017023046377/0000950170-23-046377-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/889900/000095017023046377/pten-20230814.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-23-046377
- JSON: https://secwatch.observer/filing/0000950170-23-046377.json
- Plain text: https://secwatch.observer/filing/0000950170-23-046377.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.