Ziegler joined Deere & Company in 1978 as a consolidation accountant and has held management positions in finance, treasury operations, strategic planning and investor and banking relations. Most recently, she served as Director of Investor Relations for the company.

A native of Moline, Illinois, Ziegler is a 1978 graduate of St. Ambrose University, with a bachelor of arts in accounting. She received her CPA in 1979, and an MBA from the University of Iowa in 1985.

Ziegler is on the board of the United Way of the Quad Cities, and chaired the 2003 Quad Cities United Way Campaign. She also serves on the board of Two Rivers YMCA (Moline, Illinois). Ziegler is a member of The University of Iowa's College of Business Board of Visitors, and is treasurer of fundraising for Playcrafters Barn Theatre, Moline. She is a member of the Unified Growth Strategy Committee of the Illinois Quad City Chamber of Commerce. Ziegler is a past member of the board of Trinity Regional Health System and Trinity Medical Center, and a past member of the Deere & Company Credit Union board.
John Deere (Deere & Company - NYSE:DE) is the world's leading manufacturer of agricultural and forestry equipment; a leading supplier of equipment used in lawn, grounds and turf care; and a major manufacturer of construction equipment. Additionally, John Deere manufactures engines used in heavy equipment and provides financial services and other related activities that support the core businesses. Since it founded in 1837, the company has established a heritage of quality products and services providing performance that endures to customers worldwide.

Business Day Keynote Speaker 2004
Business Day Keynote Speaker 2003
Business Day Keynote Speaker 2002