0000908406-05-000055 Sample Contracts

FORM OF

Management Agreement • December 22nd, 2005 • American Century Investment Trust

• Contract Type
  Management Agreement
• Filed
  December 22nd, 2005
• Company
  American Century Investment Trust

EXHIBIT 99.6c FORM OF

Investment Subadvisory Agreement • December 22nd, 2005 • American Century Investment Trust

• Contract Type
  Investment Subadvisory Agreement
• Filed
  December 22nd, 2005
• Company
  American Century Investment Trust

EXECUTION VERSION AMERICAN CENTURY FUNDS TERMINATION, REPLACEMENT AND RESTATEMENT AGREEMENT RELATING TO

Termination, Replacement and Restatement Agreement • December 22nd, 2005 • American Century Investment Trust • New York

• Contract Type
  Termination, Replacement and Restatement Agreement
• Filed
  December 22nd, 2005
• Company
  American Century Investment Trust
• Jurisdiction
  New York

EXHIBIT 99.1e AMENDMENT NO. 4 TO AMENDED AND RESTATED AGREEMENT AND DECLARATION OF TRUST OF AMERICAN CENTURY INVESTMENT TRUST THIS AMENDMENT NO. 4 TO AMENDED AND RESTATED AGREEMENT AND DECLARATION OF TRUST is made as of the 12th day of December, 2005...

Amendment No. 4 to Amended and Restated Agreement and Declaration of Trust • December 22nd, 2005 • American Century Investment Trust

• Contract Type
  Amendment No. 4 to Amended and Restated Agreement and Declaration of Trust
• Filed
  December 22nd, 2005
• Company
  American Century Investment Trust

THIS AMENDMENT NO. 4 TO AMENDED AND RESTATED AGREEMENT AND DECLARATION OF TRUST is made as of the 12th day of December, 2005 by the Trustees hereunder.