REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
To the Plan Administrator and Plan Participants of the
LiquidPower Specialty Products Inc. 401(k) and Profit Sharing Plan
Opinion on the Financial Statements
We
have audited the accompanying statements of net assets available for benefits of the LiquidPower Specialty Products Inc. 401(k) and Profit Sharing Plan (the Plan) as of December 31, 2021 and 2020, and the related statement of
changes in net assets available for benefits for the year ended December 31, 2021, and the related notes and schedules (collectively referred to as the financial statements). In our opinion, the financial statements present fairly, in all
material respects, the net assets available for benefits of the Plan as of December 31, 2021 and 2020, and the changes in net assets available for benefits for the year ended December 31, 2021, in conformity with accounting principles
generally accepted in the United States of America.
Basis for Opinion
These financial statements are the responsibility of the Plans management. Our responsibility is to express an opinion on the Plans
financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Plan in accordance
with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.
We
conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to
error or fraud. The Plan is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial
reporting, but not for the purpose of expressing an opinion on the effectiveness of the Plans internal control over financial reporting. Accordingly, we express no such opinion.
Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or
fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting
principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.
Supplemental Information
The supplemental
information contained in Schedule H, line 4i has been subjected to audit procedures performed in conjunction with the audit of the Plans financial statements. The supplemental information is the responsibility of the Plans management.
Our audit procedures included determining whether the supplemental information reconciles to the financial statements or the underlying accounting and other records, as applicable, and performing procedures to test the completeness and accuracy of
the information presented in the supplemental information. In forming our opinion on the supplemental information, we evaluated whether the supplemental information, including its form and content, is presented in conformity with the Department of
Labors Rules and Regulations for Reporting and Disclosure under the Employee Retirement Income Security Act of 1974. In our opinion, the supplemental information is fairly stated, in all material respects, in relation to the financial
statements as a whole.
/s/ Pannell Kerr Forster of Texas, P.C.
We have served as the Plans auditor since 2019.
Houston, Texas
June 21, 2022