THE CORPORATE LIBRARY

Related Party Transactions and Outside Related Director Information

Caterpillar Inc. (CAT)

4/17/2006 Proxy Information

During 2005, Caterpillar paid $404,225 to Out of the Ordinary Inc. for consulting services. Out of the Ordinary Inc. is owned 100 percent by Danielle Pflederer, wife of Mark Pflederer, Vice President of Caterpillar's Technology & Solutions Division. No service contracts with Out of the Ordinary were approved by Mark Pflederer. The company plans to continue purchasing consulting services from Out of the Ordinary Inc. in 2006.

2/24/2005 Proxy Information

In 1998, Caterpillar entered into a lease agreement with Riverfront Development L.L.C. (Riverfront) for space at One Technology Plaza, 211 Fulton Street, Peoria, Illinois. Pursuant to this lease and subsequent amendments, Caterpillar paid $395,805.29 to Riverfront through September 21, 2004. Diane A. Oberhelman, who has been married to Caterpillar Group President Douglas R. Oberhelman since 2000, owns a majority of Cullinan Properties L.L.C. (Cullinan), which owned 100 percent of Riverfront until September 21, 2004, when Cullinan divested itself of its entire interest in Riverfront. Thus, Diane A. Oberhelman no longer has any interest in either Riverfront or One Technology Plaza.

In each of 1998 and 2003, respectively, Caterpillar Financial Services Corporation entered into loan arrangements with Dynamic Retailers, L.L.C. The balance of these two loans as of December 31, 2004, was $559,000. Cullinan was a 50 percent member of Dynamic Retailers, L.L.C. until December 21, 2004, when Cullinan sold all of its interest in Dynamic Retailers, L.L.C. Thus, Diane A. Oberhelman no longer has an interest in Dynamic Retailers, L.L.C. and is no longer a personal guarantor of the full repayment of the loans.

On May 11, 2000, the First Circuit Court in Mexico City granted Grupo Azucarero Mexico, S.A. de C.V., a public company of which Juan Gallardo is the controlling stockholder, suspension of payments protection, which is legal protection similar to Chapter 11 of the U.S. Bankruptcy Code. This protection enables the company to continue its operations while meeting its financial obligations in an orderly fashion.

2/24/2004 Proxy Information

In 1998, Caterpillar entered into a lease agreement with Riverfront Development L.L.C. (Riverfront) for space at One Technology Plaza, 211 Fulton Street, Peoria, Illinois. Pursuant to this lease and subsequent amendments, Caterpillar paid $752,447 to Riverfront in 2003. Cullinan Properties L.L.C. (Cullinan) owns 100 percent of Riverfront. Diane A. Oberhelman owns a majority of Cullinan and since 2000 has been married to Caterpillar Group President Douglas R. Oberhelman.

In each of 1998 and 2003, Caterpillar Financial Services Corporation entered into a loan arrangement with Dynamic Retailers, L.L.C. The current balance of these two loans is $559,000. The purpose of the loans is to support two CAT Merchandise Centres in the Peoria, Illinois area. The loans are secured by inventory and fixtures. Cullinan is a 50 percent member of Dynamic Retailers, L.L.C. Diane Oberhelman owns a majority of Cullinan and is one of three personal guarantors of the full payment of the loan.