Koch Completes INVISTA™ Acquisition

Wichita, Kan.-based Koch Industries Inc. subsidiaries KED Fiber Ltd. and KED Fiber LLC have
completed their acquisition of INVISTA Inc., the fiber and intermediates subsidiary of Wilmington,
Del.-based DuPont. The deal, worth $4.2 billion, includes the assumption of debt and certain joint
venture and equity interests.Invista will operate out of four business centers: Corporate
management, the Polymers and Resins leadership team, and an Intermediates core team will be based
in Wichita. Apparel, Performance Fibers, research and development, and some functional capabilities
will be located in the Wilmington area. Textile Fibers leadership and some functional capabilities
will be located near Charlotte. The Interiors business will be based near Atlanta.

“The new Invista has many capabilities, recognized brands and an innovative team, and we
believe our long-term outlook is excellent,” said Jeff Walker, CEO, Invista. “Our focus for the
near future is to enhance this business’s ability to create superior value for our global
customers. We believe that this combination of Invistas strengths, primarily in nylon and spandex,
and [Koch subsidiary] KoSa’s polyester capabilities will position us to compete successfully in the
global resins and fibers markets.”

June 2004

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