Exhibit 99.(g)(19)

June 26, 2026
State Street Bank and Trust Company
Channel Center
One Iron Street
Boston, MA 02210
Attention: Tricia Cormier, Vice President
Re: American Beacon Funds
Ladies and Gentlemen:
The undersigned pursuant to authority under the Custodian Contract dated December 1, 1997 (as amended, modified or supplemented from time to time, the “Agreement”), between American Beacon Funds (the “Trust”) and State Street Bank and Trust Company (the “Custodian”), hereby advises you of certain changes related to certain series of shares the Trust (the “Funds”) as set forth below.
I. Termination of Funds
The following Funds (the “Terminated Funds”) have been terminated and are removed from the Agreement effective on the Termination Date:
| Fund Name | Termination Date |
| American Beacon Ninety One International Franchise Fund | June 26, 2026 |
| American Beacon Shapiro Equity Opportunities Fund | June 26, 2026 |
| American Beacon Shapiro SMID Cap Equity Fund | June 26, 2026 |
No further services will be provided by the Custodian to the Terminated Funds after each respective Terminated Fund’s Termination Date. Any compensation or reimbursement owed to the Custodian under the Agreement and unpaid at the Termination Date shall be paid to the Custodian on or before the Termination Date. Further the Trust has provided you as Custodian under the Agreement with written instructions to transfer any assets of such Fund(s), if applicable.
For your convenience, attached as Schedule D hereto is a replacement of “Schedule D” to the Agreement.
| 220 E. Las Colinas Blvd., Ste.1200, Irving, Texas 75039 • 817.391.6100 | americanbeaconadvisors.com |

Please indicate your acceptance of the foregoing by executing two copies of this letter agreement, returning one to the Trust and retaining one copy for your records.
| Sincerely, | ||
| AMERICAN BEACON FUNDS | ||
| By: | /s/ Terri McKinney | |
| Name: | Terri McKinney | |
| Title: | Vice President | |
Acknowledged and agreed as of the date set forth below:
STATE STREET BANK AND TRUST COMPANY
| By: | /s/ Andrea E. Sharp | ||
| Name: | Andrea E. Sharp | ||
| Title: | Managing Director | ||
| Date: | June 26, 2026 |
| 220 E. Las Colinas Blvd., Ste.1200, Irving, Texas 75039 • 817.391.6100 | americanbeaconadvisors.com |

Schedule D
Date: June 26, 2026
American Beacon Funds
American Beacon AHL Managed Futures Strategy Fund
American Beacon AHL TargetRisk Fund
American Beacon ARK Transformational Innovation Fund
American Beacon Balanced Fund
American Beacon Developing World Income Fund
American Beacon DoubleLine Floating Rate Fund
American Beacon DoubleLine Select Income Fund
American Beacon Garcia Hamilton Quality Bond Fund
American Beacon IMC International Small Cap Fund
American Beacon International Equity Fund
American Beacon Large Cap Value Fund
American Beacon Man Large Cap Growth Fund
American Beacon Man Large Cap Value Fund
American Beacon Ninety One Emerging Markets Equity Fund
American Beacon Ninety One Global Franchise Fund
American Beacon NIS Core Plus Bond Fund
American Beacon SiM High Yield Opportunities Fund
American Beacon Small Cap Value Fund
American Beacon SSI Alternative Income Fund
American Beacon Stephens Small Cap Growth Fund
American Beacon Stephens Mid-Cap Growth Fund
American Beacon The London Company Income Equity Fund
American Beacon TwentyFour Short Term Bond Fund
American Beacon TwentyFour Strategic Income Fund
American Beacon Cayman Managed Futures Strategy Fund, Ltd.
American Beacon Cayman TargetRisk Company, Ltd.
| 220 E. Las Colinas Blvd., Ste.1200, Irving, Texas 75039 • 817.391.6100 | americanbeaconadvisors.com |