The purpose of this Sustainability Update is to maintain transparency with our stakeholders by providing updated performance metrics, including key sustainability KPIs for Horizontal Wireline Services, LLC (“Horizontal,” “we,” or “our”).

This report discloses select sustainability metrics we track across our organization. Unless otherwise indicated, the data and information presented cover Horizontal Wireline Services, LLC and its subsidiaries for the calendar year 2025.

For additional details on our sustainability initiatives, please refer to the related narratives and disclosures available on our website. This report is for informational purposes only and should not be relied upon as legal, tax, or investment advice, nor does it constitute an offer
to sell or a solicitation to buy an interest in the company.

Data Quality, Verification & Reporting Frameworks

This report is informed by the oil and gas industry topics and metrics identified by the Sustainability Accounting Standards Board (SASB) and many of our initiatives align with the United Nation’s Sustainable Development Goals (SDGs). The data and information included in this report has been reviewed by our Board of Directors and senior leadership team. In addition, we engaged an independent third party, Full Scope Insights, to assess our greenhouse gas (GHG) emissions in alignment with the World Resources Institute’s Greenhouse Gas Protocol, an emission accounting and reporting standard.