Exhibit 99.(g)(8)
September 14, 2026
State Street Bank and Trust Company
One Congress Street
Boston, MA 02114
Attention: Tricia Cormier, Vice President
Re: American Beacon Select Funds (the “Trust”)
Ladies and Gentlemen:
This letter is to advise you that the undersigned Trust has established a new series, the American Beacon The London Company Income Equity ETF (the “Fund”).
In accordance with the Additional Portfolios provision of Section 20 of the Custodian Agreement dated December 3l, 1999 between the Trust and State Street Bank and Trust Company (as amended, modified or supplemented from time to time, the “Agreement”), the undersigned Trust hereby requests that you act as Custodian for the Fund.
For your convenience, attached as Schedule D hereto is a replacement of “Schedule D” to the Agreement.
Please indicate your acceptance of the foregoing by executing two copies of this Letter Agreement, returning one to the undersigned Trust and retaining one copy for your records.
| Sincerely, | ||
| AMERICAN BEACON SELECT FUNDS | ||
| By: | /s/ Terri McKinney | |
| Name: | Terri McKinney | |
| Title: | Vice President | |
Agreed:
STATE STREET BANK AND TRUST COMPANY
| By: | /s/ Andrea E. Sharp | |
| Name: | Andrea E. Sharp | |
| Title: | Managing Director | |
| Effective Date: September 14, 2026 | ||
| 220 E. Las Colinas Blvd., Ste. 1200, Irving, Texas 75039 • 817.391.6100 | |
| Distributed by Foreside Financial Services, LLC. | americanbeaconfunds.com |
Information Classification: Limited Access
PORTFOLIOS
| Schedule D.1 | |
| Name of Portfolio | Effective Date |
| American Beacon U.S. Government Money Market Select Fund | December 1, 2001 |
| Schedule D.2 | |
| Name of Portfolio (each, an “ETF Client”) | Effective Date |
| American Beacon AHL Trend ETF | August 23, 2023 |
| American Beacon GLG Natural Resources ETF | February 1, 2024 |
| American Beacon Ionic Inflation Protection ETF | March 3, 2025 |
| American Beacon Aberdeen Municipal High Income ETF | June 24, 2026 |
| American Beacon The London Company Income Equity ETF | October 23, 2026 |
Information Classification: Limited Access