0001293210-20-000119 Sample Contracts

July 21, 2020 State Street Bank and Trust Company One Heritage Drive North Quincy, Massachusetts 02171 Location Code: OHD0310 Attention: Russell M. Donohoe Re: Master Custodian Agreement – New Portfolio Ladies and Gentlemen:

Master Custodian Agreement • September 22nd, 2020 • American Century Asset Allocation Portfolios, Inc.

• Contract Type
  Master Custodian Agreement
• Filed
  September 22nd, 2020
• Company
  American Century Asset Allocation Portfolios, Inc.

In accordance with Section 18.6, the Additional Portfolios provision, of the Master Custodian Agreement dated as of July 29, 2011 (the “Custodian Agreement”) by and among each Fund party thereto and State Street Bank and Trust Company, the undersigned Fund hereby requests that your bank act as Custodian for the New Portfolio under the terms of the Custodian Agreement. In connection with such request, the undersigned Fund hereby confirms to you, as of the date hereof, its representations and warranties set forth in Section 18.7 of the Custodian Agreement. Capitalized terms used herein without definition shall have the meanings ascribed to them in the Custodian Agreement.

AMENDED AND RESTATED DISTRIBUTION AGREEMENT

Distribution Agreement • September 22nd, 2020 • American Century Asset Allocation Portfolios, Inc. • Missouri

• Contract Type
  Distribution Agreement
• Filed
  September 22nd, 2020
• Company
  American Century Asset Allocation Portfolios, Inc.
• Jurisdiction
  Missouri

THIS DISTRIBUTION AGREEMENT (the “Agreement”) is amended and restated effective as of the 23rd day of September, 2020, by and between AMERICAN CENTURY ASSET ALLOCATION PORTFOLIOS, INC., a Maryland corporation (the “Issuer”), and AMERICAN CENTURY INVESTMENT SERVICES, INC., a Delaware corporation (“Distributor”).

American Century Asset Allocation Portfolios, Inc. AMENDMENT NO. 1 TO AMENDED AND RESTATED MANAGEMENT AGREEMENT

Management Agreement • September 22nd, 2020 • American Century Asset Allocation Portfolios, Inc.

• Contract Type
  Management Agreement
• Filed
  September 22nd, 2020
• Company
  American Century Asset Allocation Portfolios, Inc.

This AMENDMENT NO. 1 TO AMENDED AND RESTATED MANAGEMENT AGREEMENT (“Amendment”) is effective as of the 23rd day of September, 2020, by and between AMERICAN CENTURY ASSET ALLOCATION PORTFOLIOS, INC., a Maryland corporation (hereinafter called the “Company”), and AMERICAN CENTURY INVESTMENT MANAGEMENT, INC., a Delaware corporation (hereinafter called the “Investment Manager”).