0001353176-06-000013 Sample Contracts

American Century Investment Management, Inc. 4500 Main Street Kansas City, MO 64111
Initial Capital Agreement • May 30th, 2006 • American Century Growth Funds, Inc.

In order to provide American Century Growth Funds, Inc. ("ACGF") with the initial capital required pursuant to Section 14 of the Investment Company Act of 1940, as amended, American Century Investment Management, Inc. ("ACIM") is hereby purchasing from ACGF 10,000 shares of beneficial interest, $0.01 par value, of Institutional Class shares of Legacy Large Cap, a series of ACGF (the "Shares"), at a purchase price of $10.00 per Share, for a total purchase price of $100,000.