indextrusteesai.htm

In the “Trustees and Officers of the Trust” section - “Interested Trustees” table, the following is added:

Gerard J. Arpey*** (54)

Trustee since 2012

Partner, Emerald Creek Group (private equity firm) (2011-Present); Chairman and Chief Executive Officer, (2003-2011), AMR Corp. and American Airlines, Inc.; Director, S. C. Johnson & Son, Inc. (privately held company) (2008-present); Trustee, American Beacon Select Funds (2012-Present).

***Mr. Arpey is deemed to be an “interested person” of the Trust, as defined by the 1940 Act. Mr. Arpey previously served as CEO of AMR Corp., which has a material relationship with the Manager.

In the “Trustees and Officers of the Trust” section - “Non-Interested Trustees” table, the following is added:

Barbara J. McKenna (49)

Trustee since 2012

Managing Principal, Longfellow Investment Management Company (2005-Present); Trustee, American Beacon Select Funds (2012-Present).

In the paragraphs following the Trustees chart in the “Trustees and Officers of the Trust” section, the following is inserted in alphabetical order:

Gerard J. Arpey: Mr. Arpey has extensive organizational management, financial and international experience serving as chairman, chief executive officer, and chief financial officer of one of the largest global airlines, service as a director of public and private companies, and service to several charitable organizations.

Barbara J. McKenna: Ms. McKenna has extensive experience in the investment management industry, organizational management experience as a member of senior management, service as a director of an investment manager, and member of numerous financial services industry associations.

In the “Trustees and Officers of the Trust” section - “Committees of the Board” subsection, the first sentence in the third paragraph is replaced with the following:

The Trust has an Investment Committee that is comprised of Messrs. Bogart (Chair) and Arpey and Mses. Cline and McKenna.

In the “Trustees and Officers of the Trust” section - “Trustee Ownership in the Funds” subsection, the following is added to the table titled “Interested Trustees”:

	Arpey*
S&P 500 Index	None
Small Cap Index	None
International Equity Index	None
Aggregate Dollar Range of Equity Securities in all Trusts (26 Funds)	Over $100,000

*As of May 31, 2012

In the “Trustees and Officers of the Trust” section- Trustee Ownership in the Funds subsection, the following is added to the table titled “Non-Interested Trustees”:

	McKenna*
S&P 500 Index	None
Small Cap Index	None
International Equity Index	None
Aggregate Dollar Range of Equity Securities in all Trusts (26 Funds)	None

*As of May 31, 2012

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