Biography

Ms. Giesselman held a number of senior leadership positions for The Dow Chemical Company, from 2001 to 2010, including president and general manager of Dow Oil & Gas, from 2007 to 2010, business vice president of Dow Latex, from 2006 to 2007, and as a vice president of Dow AgroSciences, from 2001 to 2006, including leading strategy and regulatory affairs. From 1981 to 2001, Ms. Giesselman worked in a variety of sales, marketing, and strategic planning roles at Rohm and Haas Company, a specialty and performance materials company, including regional business director, agricultural division, from 1998 to 2001. Ms. Giesselman has served on the board of directors of McCain Foods Ltd., a privately held multinational manufacturer of frozen potato products, since June 2014; and Twin Disc, Inc., a global provider of power transmissions for marine, oil and gas, and industrial uses, since June 2015. Ms. Giesselman previously served as chair of the board of directors of Ag Growth International, Inc., a leading manufacturer of grain handling, storage and conditioning equipment, from May 2023 until her retirement from the Ag Growth board in May 2025, where she had been a director since 2013. Ms. Giesselman also previously served on the boards of GCP Applied Technologies Inc., a global provider of construction products and technologies, from May 2020 until it was acquired by Saint-Gobain in September 2022; Avicanna Inc., a leader in innovative biopharmaceutical advances using cannabinoid-based products, from June 2019 to May 2021; and OMNOVA Solutions Inc., a global provider of emulsion polymers, specialty chemicals and decorative & functional surfaces, from March 2015 until it was acquired by Synthomer plc in April 2020. Ms. Giesselman joined Corteva’s Board in March 2021.