Item 9A. CONTROLS AND PROCEDURES

Corteva, Inc.

a) Evaluation of Disclosure Controls and Procedures

The company maintains a system of disclosure controls and procedures to give reasonable assurance that information required to be disclosed in the company's reports filed or submitted under the Securities Exchange Act of 1934 ("Exchange Act") is recorded, processed, summarized and reported within the time periods specified in the rules and forms of the Securities and Exchange Commission. These controls and procedures also give reasonable assurance that information required to be disclosed in such reports is accumulated and communicated to management to allow timely decisions regarding required disclosures.

As of December 31, 2019, the company's Chief Executive Officer ("CEO") and Chief Financial Officer ("CFO"), together with management, conducted an evaluation of the effectiveness of the company's disclosure controls and procedures pursuant to Rules 13a-15(e) and 15d-15(e) of the Exchange Act. Based on that evaluation, the CEO and CFO concluded that these disclosure controls and procedures are effective.

The company completed the common control combination of the Dow Agrosciences (“DAS") business from DowDuPont on May 2, 2019. As a result, management has excluded from its assessment those disclosure controls and procedures of the DAS business as of December 31, 2019. The total assets of the DAS business that were excluded from the assessment represented approximately 20 percent of the company's total assets as of December 31, 2019. Total net sales from continuing operations of the DAS business that was excluded from the assessment represented approximately 40 percent of the company’s total net sales from continuing operations for the year ended December 31, 2019.

b) Changes in Internal Control over Financial Reporting

There have been no changes in the company's internal control over financial reporting that occurred during the quarter ended December 31, 2019 that have materially affected, or are reasonably likely to materially affect, the company's internal control over financial reporting.

In connection with the separations and Corteva Distribution, there are several processes, policies, operations, technologies and information systems that were integrated following the Merger which have been replicated, transferred or separated. The company continues to take steps to ensure that adequate controls are designed and maintained throughout this transition period.

Part II

E. I. du Pont de Nemours and Company

a) Evaluation of Disclosure Controls and Procedures

EID maintains a system of disclosure controls and procedures to give reasonable assurance that information required to be disclosed in their reports filed or submitted under the Securities Exchange Act of 1934 ("Exchange Act") is recorded, processed, summarized and reported within the time periods specified in the rules and forms of the Securities and Exchange Commission. These controls and procedures also give reasonable assurance that information required to be disclosed in such reports is accumulated and communicated to management to allow timely decisions regarding required disclosures.

As of December 31, 2019, EID's CEO and CFO, together with management, conducted an evaluation of the effectiveness of EID's disclosure controls and procedures pursuant to Rules 13a-15(e) and 15d-15(e) of the Exchange Act. Based on that evaluation, the CEO and CFO concluded that these disclosure controls and procedures are effective.

EID completed the common control combination of the Dow Agrosciences (“DAS") business from DowDuPont on May 2, 2019. As a result, management has excluded from its assessment those disclosure controls and procedures of the DAS business as of December 31, 2019. The total assets of the DAS business that were excluded from the assessment represented approximately 20 percent of EID's total assets as of December 31, 2019. Total net sales from continuing operations of the DAS business that was excluded from the assessment represented approximately 40 percent of EID’s total net sales from continuing operations for the year ended December 31, 2019.

b) Changes in Internal Control over Financial Reporting

There have been no changes in EID's internal control over financial reporting that occurred during the quarter ended December 31, 2019 that have materially affected, or are reasonably likely to materially affect, EID's internal control over financial reporting.

In connection with the separations and Corteva Distribution, there are several processes, policies, operations, technologies and information systems that were integrated following the Merger which have been replicated, transferred or separated. EID continues to take steps to ensure that adequate controls are designed and maintained throughout this transition period.