REPORTING & DISCLOSURE TRACKING OUR PROGRESS DOW | REPORTING & DISCLOSURE | 179 Independent Assurance Statement Deloitte & Touche LLP Suite 400 3320 Ridgecrest Drive Midland, MI 48642-2370 USA Tel: +1 989 631 2370 www.deloitte.com INDEPENDENT ACCOUNTANTS’ REVIEW REPORT Management of Dow Inc. and The Dow Chemical Company Midland, MI We have reviewed management of Dow Inc.’s and its consolidated subsidiaries, including The Dow Chemical Company (collectively, “Dow” or the “Company”) assertion that the ESG disclosures referenced or included in the Global Reporting Initiative (“GRI”) Content Index (the “ESG disclosures”) included within the accompanying Dow 2021 Environmental, Social and Governance Report (the “2021 ESG Report”) as of, and for the year ended December 31, 2021 are presented in accordance with the Global Reporting Initiative Sustainability Reporting Standards under its Comprehensive option (the “GRI Standards – Comprehensive option”). The Company’s management is responsible for its assertion. Our responsibility is to express a conclusion on management’s assertion based on our review. Our review was conducted in accordance with attestation standards established by the American Institute of Certified Public Accountants (AICPA) in AT-C section 105, Concepts Common to All Attestation Engagements , and AT-C section 210, Review Engagements . Those standards require that we plan and perform the review to obtain limited assurance about whether any material modifications should be made to management’s assertion in order for it to be fairly stated. The procedures performed in a review vary in nature and timing from, and are substantially less in extent than an examination, the objective of which is to obtain reasonable assurance about whether management’s assertion is fairly stated, in all material respects, in order to express an opinion. Accordingly, we do not express such an opinion. Because of the limited nature of the engagement, the level of assurance obtained in a review is substantially lower than the assurance that would have been obtained had an examination been performed. We believe that the review evidence obtained is sufficient and appropriate to provide a reasonable basis for our conclusion. We are required to be independent and to meet our other ethical responsibilities in accordance with the Code of Professional Conduct issued by the AICPA. We applied the Statements on Quality Control Standards established by the AICPA and, accordingly, maintain a comprehensive system of quality control. The procedures we performed were based on our professional judgment. In performing our review, we conducted inquiries and performed analytical procedures. For a selection of ESG disclosures, we performed tests of mathematical accuracy of computations, compared the disclosures to underlying records, or observed the data collection process in regard to the accuracy of the data in the ESG disclosures. The preparation of the ESG disclosures in the GRI Content Index included within the 2021 ESG Report requires management to interpret the criteria, make determinations as to the relevancy of information to be included, and make estimates and assumptions that affect reported information. Measurement of certain amounts and ESG disclosures includes estimates and assumptions that are subject to substantial inherent measurement uncertainty resulting, for example, from the accuracy and precision of greenhouse gas emission conversion factors and the process to measure energy consumption. Obtaining sufficient, appropriate review evidence to support our conclusion does not reduce the inherent uncertainty in the amounts and ESG disclosures. The selection by management of different but acceptable measurement methods, input data, or assumptions may have resulted in materially different amounts or ESG disclosures being reported. Information outside of the ESG disclosures referenced or included in the GRI Content Index, including linked information, was not subject to our review, including the Alignment to UN Sustainable Development Goals, TCFD Disclosure Report, SASB Disclosures Report, WEF Disclosure Report, and Non-GAAP Financial Measures and, accordingly, we do not express a conclusion or any form of assurance on such information. Further, any information relating to periods prior to the year-ended December 31, 2020 or information relating to forward looking statements, targets, goals and progress against goals, was not subject to our review and, accordingly, we do not express a conclusion or any form of assurance on such information. As disclosed in the GRI Content Index related to GRI 302-1, the Company changed the methodology used to calculate energy consumption as of December 31, 2021. The methodology for this calculation was not revised in the prior periods presented. Our conclusion is not modified with respect to this matter. Based on our review, we are not aware of any material modifications that should be made to management of Dow’s assertion that the ESG disclosures referenced or included in the GRI Content Index included within the accompanying Dow 2021 ESG Report as of, and for the year ended December 31, 2021 are presented in accordance with the GRI Standards – Comprehensive option, in order for it to be fairly stated. June 15, 2022