DuPont Declares Second Quarter Dividend 

Increase of 4 Percent

WILMINGTON, Del., April 21, 2015 – DuPont declared a second quarter common stock dividend of 49 cents per share payable June 12, 2015, to stockholders of record May 15, 2015. This represents a 4 percent increase over the 47 cents paid last quarter. This is the fourth increase in the past 36 months, and the 443rd consecutive quarterly dividend since the company’s first dividend in the fourth quarter of 1904.

Regular quarterly dividends of $1.12-1/2 per share on the $4.50 series preferred stock and $0.87-1/2 cents per share on the $3.50 series preferred stock also were declared, both payable July 24, 2015 to stockholders of record July 10, 2015.

DuPont (NYSE: DD) has been bringing world-class science and engineering to the global marketplace in the form of innovative products, materials, and services since 1802. The company believes that by collaborating with customers, governments, NGOs, and thought leaders we can help find solutions to such global challenges as providing enough healthy food for people everywhere, decreasing dependence on fossil fuels, and protecting life and the environment. For additional information about DuPont and its commitment to inclusive innovation, please visit http://www.dupont.com.

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4/21/15