# EDGAR Filing Document

**Accession Number:** 0000809593
**File Stem:** 0001133228-25-011868
**Filing Date:** 2025-11
**Character Count:** 23109
**Document Hash:** e4e4238d5663514cf7ad5ddf3a5ae442
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001133228-25-011868.hdr.sgml**: 20251107

**ACCESSION NUMBER**: 0001133228-25-011868

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20251107

**DATE AS OF CHANGE**: 20251107

**EFFECTIVENESS DATE**: 20251107

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** AMERICAN BEACON FUNDS
- **CENTRAL INDEX KEY:** 0000809593

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 1031

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 033-11387
- **FILM NUMBER:** 251463643

**BUSINESS ADDRESS:**
- **STREET 1:** 220 EAST LAS COLINAS BOULEVARD
- **STREET 2:** SUITE 1200
- **CITY:** IRVING
- **STATE:** TX
- **ZIP:** 75039
- **BUSINESS PHONE:** 8173916100

**MAIL ADDRESS:**
- **STREET 1:** 220 EAST LAS COLINAS BOULEVARD
- **STREET 2:** SUITE 1200
- **CITY:** IRVING
- **STATE:** TX
- **ZIP:** 75039

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** AMERICAN AADVANTAGE FUNDS
- **DATE OF NAME CHANGE:** 19920703

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** AMERICAN EAGLE FUNDS
- **DATE OF NAME CHANGE:** 19890813

## Series and Classes Contracts Data

### American Beacon ARK Transformational Innovation Fund (Series ID: S000056147)

---

|  |  |  |
|:---|:---|:---|
| Class Name     | Ticker Symbol | Class ID   |
| R5 Class       | ADNIX         | C000176824 |
| Investor Class | ADNPX         | C000176825 |
| Y Class        | ADNYX         | C000176826 |
| A Class        | ADNAX         | C000210490 |
| C Class        | ADNCX         | C000210491 |
| R6 Class       | ADNRX         | C000224371 |

---

### American Beacon TwentyFour Strategic Income Fund (Series ID: S000056913)

---

|  |  |  |
|:---|:---|:---|
| Class Name     | Ticker Symbol | Class ID   |
| R5 Class       | TFGIX         | C000180737 |
| Investor Class | TFGPX         | C000180738 |
| Y Class        | TFGYX         | C000180741 |
| A Class        | TFSAX         | C000205755 |
| C Class        | TFGCX         | C000205756 |

---

### American Beacon Shapiro SMID Cap Equity Fund (Series ID: S000058550)

---

|  |  |  |
|:---|:---|:---|
| Class Name     | Ticker Symbol | Class ID   |
| R5 Class       | SHDIX         | C000192441 |
| Investor Class | SHDPX         | C000192442 |
| Y Class        | SHDYX         | C000192443 |
| R6 Class       | SHDRX         | C000233646 |
| C Class        | SHDCX         | C000233647 |
| A Class        | SHEAX         | C000233648 |

---

### American Beacon Shapiro Equity Opportunities Fund (Series ID: S000058551)

---

|  |  |  |
|:---|:---|:---|
| Class Name     | Ticker Symbol | Class ID   |
| R5 Class       | SHXIX         | C000192444 |
| Investor Class | SHXPX         | C000192445 |
| Y Class        | SHXYX         | C000192446 |
| C Class        | SHXCX         | C000233649 |
| A Class        | SHXAX         | C000233650 |

---

### American Beacon SSI Alternative Income Fund (Series ID: S000064203)

---

|  |  |  |
|:---|:---|:---|
| Class Name     | Ticker Symbol | Class ID   |
| R5 Class       | SSIJX         | C000207658 |
| Y Class        | PSCIX         | C000207659 |
| Investor Class | PSCAX         | C000207660 |

---

### American Beacon TwentyFour Short Term Bond Fund (Series ID: S000067914)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| Y Class    | TFBYX         | C000217745 |
| A Class    | TFBAX         | C000217746 |
| C Class    | TFBCX         | C000217747 |
| R6 Class   | TFBRX         | C000217748 |

---

## Series and Classes Contracts Data

### American Beacon ARK Transformational Innovation Fund (Series ID: S000056147)

| Class ID   | Class Name     | Ticker Symbol   |
|:---|:---|:---|
| C000176824 | R5 Class       | ADNIX           |
| C000176825 | Investor Class | ADNPX           |
| C000176826 | Y Class        | ADNYX           |
| C000210490 | A Class        | ADNAX           |
| C000210491 | C Class        | ADNCX           |
| C000224371 | R6 Class       | ADNRX           |

### American Beacon TwentyFour Strategic Income Fund (Series ID: S000056913)

| Class ID   | Class Name     | Ticker Symbol   |
|:---|:---|:---|
| C000180737 | R5 Class       | TFGIX           |
| C000180738 | Investor Class | TFGPX           |
| C000180741 | Y Class        | TFGYX           |
| C000205755 | A Class        | TFSAX           |
| C000205756 | C Class        | TFGCX           |

### American Beacon Shapiro SMID Cap Equity Fund (Series ID: S000058550)

| Class ID   | Class Name     | Ticker Symbol   |
|:---|:---|:---|
| C000192441 | R5 Class       | SHDIX           |
| C000192442 | Investor Class | SHDPX           |
| C000192443 | Y Class        | SHDYX           |
| C000233646 | R6 Class       | SHDRX           |
| C000233647 | C Class        | SHDCX           |
| C000233648 | A Class        | SHEAX           |

### American Beacon Shapiro Equity Opportunities Fund (Series ID: S000058551)

| Class ID   | Class Name     | Ticker Symbol   |
|:---|:---|:---|
| C000192444 | R5 Class       | SHXIX           |
| C000192445 | Investor Class | SHXPX           |
| C000192446 | Y Class        | SHXYX           |
| C000233649 | C Class        | SHXCX           |
| C000233650 | A Class        | SHXAX           |

### American Beacon SSI Alternative Income Fund (Series ID: S000064203)

| Class ID   | Class Name     | Ticker Symbol   |
|:---|:---|:---|
| C000207658 | R5 Class       | SSIJX           |
| C000207659 | Y Class        | PSCIX           |
| C000207660 | Investor Class | PSCAX           |

### American Beacon TwentyFour Short Term Bond Fund (Series ID: S000067914)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000217745 | Y Class      | TFBYX           |
| C000217746 | A Class      | TFBAX           |
| C000217747 | C Class      | TFBCX           |
| C000217748 | R6 Class     | TFBRX           |

**American Beacon ARK Transformational Innovation Fund**

Supplement dated November 7, 2025, to the

Statement of Additional Information ("SAI"), dated November 3, 2025

&nbsp;&nbsp;&nbsp;&nbsp;**I.** On
 pages 33-35 of the SAI, under the heading **"CONTROL PERSONS AND 5% SHAREHOLDERS,"** the second paragraph and the table are deleted and replaced with the following:

Set forth below are entities or persons that owned 5% or more of the outstanding shares of a class of the Fund as of October 6, 2025. The Trustees and officers of the Trusts, as a group, owned 13.94% of the R6 Class shares of the Fund as of that date. The Trustees and officers of the Trusts, as a group, owned less than 1% of all other classes of the Fund's shares outstanding as of that date.

---

| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
| **Shareholder Address** | **Fund Percentage (listed if over 25%)** | **A CLASS** | **C CLASS** | **Y CLASS** | **R6 CLASS** | **R5 CLASS** | **Investor Class** |
| AMERICAN ENTERPRISE INV SVCS\* |  | 10.00% | 22.61% | 21.51% |  |  |  |
| 707 2ND AVE S |  |  |  |  |  |  |  |
| MINNEAPOLIS MN 55402-2405 |  |  |  |  |  |  |  |
| CHARLES SCHWAB & CO INC\* |  | 34.14% | 37.41% | 11.75% | 85.48% | 5.13% | 14.67% |
| SPECIAL CUST A/C |  |  |  |  |  |  |  |
| EXCLUSIVE BENEFIT OF CUSTOMERS |  |  |  |  |  |  |  |
| ATTN MUTUAL FUNDS |  |  |  |  |  |  |  |
| 211 MAIN ST |  |  |  |  |  |  |  |
| SAN FRANCISCO CA 94105-1905 |  |  |  |  |  |  |  |
| LPL FINANCIAL\* |  | 26.52% | 12.10% | 16.29% |  |  |  |
| 4707 EXECUTIVE DR |  |  |  |  |  |  |  |
| SAN DIEGO CA 92121-3091 |  |  |  |  |  |  |  |
| NATIONAL FINANCIAL SERVICES LLC\* |  | 6.46% | 5.50% | 15.42% | 10.38% |  | 73.06% |
| FOR EXCLUSIVE BENEFIT OF OUR CUSTOMERS |  |  |  |  |  |  |  |
| ATTN MUTUAL FUNDS DEPT 4TH FLOOR |  |  |  |  |  |  |  |
| 499 WASHINGTON BLVD |  |  |  |  |  |  |  |
| JERSEY CITY NJ 07310-1995 |  |  |  |  |  |  |  |
| PERSHING LLC\* |  | 7.14% | 13.06% | 6.24% |  |  | 6.27% |
| 1 PERSHING PLZ |  |  |  |  |  |  |  |
| JERSEY CITY NJ 07399-0001 |  |  |  |  |  |  |  |
| RAYMOND JAMES\* |  | 5.10% | 7.75% |  |  |  |  |
| OMNIBUS FOR MUTUAL FUNDS |  |  |  |  |  |  |  |
| ATTN MUTUAL FUND RECONCILIATION 14G |  |  |  |  |  |  |  |
| 880 CARILLON PKWY |  |  |  |  |  |  |  |
| ST PETERSBURG FL 33716-1100 |  |  |  |  |  |  |  |
| UBS WM USA\* |  |  |  | 14.02% |  |  |  |
| OMNI ACCOUNT M/F |  |  |  |  |  |  |  |
| SPEC CDY A/C EBOC UBSFSI |  |  |  |  |  |  |  |
| 1000 HARBOR BLVD |  |  |  |  |  |  |  |
| WEEHAWKEN NJ 07086-6761 |  |  |  |  |  |  |  |
| JOHN HANCOCK TRUST COMPANY LLC\* |  |  |  |  |  | 6.20% |  |
| 200 BERKELEY ST STE 7 |  |  |  |  |  |  |  |
| BOSTON MA 02116-5038 |  |  |  |  |  |  |  |

---

ARK-110725-SAI

---

| | |
|:---|:---|
| MID ATLANTIC TRUST COMPANY FBO | 17.36% |
| ANOTHER JACOBY COMPANY INC 401(K) P |  |
| 1251 WATERFRONT PL STE 525 |  |
| PITTSBURGH PA 15222-4228 |  |
| MID ATLANTIC TRUST COMPANY FBO | 15.38% |
| PDC ASSET MANAGEMENT 401(K) PROFIT |  |
| 1251 WATERFRONT PL STE 525 |  |
| PITTSBURGH PA 15222-4228 |  |
| PENTEGRA TRUST COMPANY AS CUSTODIAN | 5.28% |
| FBO TEXAS TECH UNIVERSITY ORP |  |
| C/O RETIREMENT SYSTEM CONSULTANTS |  |
| 2 ENTERPRISE DRIVE, SUITE 408 |  |
| SHELTON CT 06484-4657 |  |
| STATE STREET BANK | 8.57% |
| TRUSTEE AND/OR CUSTODIAN |  |
| FBO ADP ACCESS PRODUCT |  |
| 1 LINCOLN STREET |  |
| BOSTON MA 02111-2901 |  |
| VOYA RETIREMENT INSURANCE & ANNUITY\* | 25.44% |
| COMPANY |  |
| 1 ORANGE WAY |  |
| WINDSOR CT 06095-4773 |  |

---

 

\*Denotes record owner of Fund shares only

\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*

PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE

![](img_1.jpg)

**American Beacon Shapiro Equity Opportunities Fund**

**American Beacon Shapiro SMID Cap Equity Fund**

**American Beacon SSI Alternative Income Fund**

Supplement dated November 7, 2025, to the

Statement of Additional Information ("SAI"), dated November 3, 2025

&nbsp;&nbsp;&nbsp;&nbsp;**I.** On
 pages 35-39 of the SAI, under the heading **"CONTROL PERSONS AND 5% SHAREHOLDERS,"** the second paragraph and the tables are deleted and replaced with the following:

Set forth below are entities or persons that owned 5% or more of the outstanding shares of a class of each Fund as of October 6, 2025. The Trustees and officers of the Trusts, as a group, owned less than 1% of all classes of each Fund's shares outstanding as of that date.

**American Beacon Shapiro Equity Opportunities Fund**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Shareholder Address** | **Fund Percentage (listed if over 25%)** | **A CLASS** | **C CLASS** | **Y CLASS** | **R5 CLASS** | **Investor CLASS** |
| CHARLES SCHWAB & CO INC\* | 25.74% |  |  | 22.95% | 70.10% | 14.90% |
| SPECIAL CUSTODY A/C FBO CUSTOMERS |  |  |  |  |  |  |
| ATTN TREASURY CAPITAL MKTS |  |  |  |  |  |  |
| 101 MONTGOMERY 120KNY-13 |  |  |  |  |  |  |
| SAN FRANCISCO CA 94104-4151 |  |  |  |  |  |  |
| J.P. MORGAN SECURITIES LLC OMNIBUS\* |  |  |  |  |  | 29.67% |
| ACCT FOR THE EXCLUSIVE BEN OF CUST |  |  |  |  |  |  |
| 4 CHASE METROTECH CTR FL 3RD |  |  |  |  |  |  |
| BROOKLYN NY 11245-0003 |  |  |  |  |  |  |
| NATIONAL FINANCIAL SERVICES LLC\* |  |  |  | 21.75% | 12.06% | 49.94% |
| FOR EXCLUSIVE BENEFIT OF |  |  |  |  |  |  |
| OUR CUSTOMERS |  |  |  |  |  |  |
| ATTN MUTUAL FUNDS DEPT 4TH FLOOR |  |  |  |  |  |  |
| 499 WASHINGTON BLVD |  |  |  |  |  |  |
| JERSEY CITY NJ 07310-1995 |  |  |  |  |  |  |
| PERSHING LLC\* |  |  |  |  | 17.73% |  |
| 1 PERSHING PLZ |  |  |  |  |  |  |
| JERSEY CITY NJ 07399-0001 |  |  |  |  |  |  |
| AMERICAN BEACON ADVISORS |  | 100.00% | 100.00% |  |  |  |
| 220 LAS COLINAS BLVD E STE 1200 |  |  |  |  |  |  |
| IRVING TX 75039-5500 |  |  |  |  |  |  |
| GOULSTORRS & CO, INC |  |  |  | 6.36% |  |  |
| 1 POST OFFICE SQ FL 25 |  |  |  |  |  |  |
| BOSTON MA 02109-2115 |  |  |  |  |  |  |
| SAXON & CO |  |  |  | 8.59% |  |  |
| PO BOX 94597 |  |  |  |  |  |  |
| CLEVELAND OH 44101-4597 |  |  |  |  |  |  |
| SAXON & CO |  |  |  | 5.98% |  |  |
| PO BOX 94597 |  |  |  |  |  |  |
| CLEVELAND OH 44101-4597 |  |  |  |  |  |  |
| SAXON & CO |  |  |  | 14.31% |  |  |
| PO BOX 94597 |  |  |  |  |  |  |
| CLEVELAND OH 44101-4597 |  |  |  |  |  |  |

---

 

\*Denotes record owner of Fund shares only

630-110725-SAI

**American Beacon Shapiro SMID Cap Equity Fund**

---

| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
| **Shareholder Address** | **Fund Percentage (listed if over 25%)** | **A CLASS** | **C CLASS** | **Y CLASS** | **R6 CLASS** | **R5 CLASS** | **Investor CLASS** |
| AMERICAN ENTERPRISE INV SVCS\* |  | 10.59% |  |  |  |  |  |
| 707 2ND AVE S |  |  |  |  |  |  |  |
| MINNEAPOLIS MN 55402-2405 |  |  |  |  |  |  |  |
| CHARLES SCHWAB & CO INC\* |  |  |  |  | 47.15% |  |  |
| SPECIAL CUST A/C |  |  |  |  |  |  |  |
| EXCLUSIVE BENEFIT OF CUSTOMERS |  |  |  |  |  |  |  |
| ATTN MUTUAL FUNDS |  |  |  |  |  |  |  |
| 211 MAIN ST |  |  |  |  |  |  |  |
| SAN FRANCISCO CA 94105-1901 |  |  |  |  |  |  |  |
| CHARLES SCHWAB & CO INC\* | 27.70% |  |  | 35.72% |  | 31.16% | 21.28% |
| SPECIAL CUSTODY A/C FBO CUSTOMERS |  |  |  |  |  |  |  |
| ATTN TREASURY CAPITAL MKTS |  |  |  |  |  |  |  |
| 101 MONTGOMERY 120KNY-13 |  |  |  |  |  |  |  |
| SAN FRANCISCO CA 94104-4151 |  |  |  |  |  |  |  |
| LPL FINANCIAL\* |  | 9.01% | 14.01% |  |  |  |  |
| 4707 EXECUTIVE DR |  |  |  |  |  |  |  |
| SAN DIEGO CA 92121-3091 |  |  |  |  |  |  |  |
| MORGAN STANLEY SMITH BARNEY LLC\* |  | 8.31% |  |  |  |  | 9.48% |
| FOR THE EXCLUSIVE BENE OF ITS CUST |  |  |  |  |  |  |  |
| 1 NEW YORK PLZ FL 12 |  |  |  |  |  |  |  |
| NEW YORK NY 10004-1965 |  |  |  |  |  |  |  |
| NATIONAL FINANCIAL SERVICES LLC\* |  | 5.48% | 36.14% | 26.07% |  | 15.31% | 45.97% |
| FOR EXCLUSIVE BENEFIT OF OUR CUSTOMERS |  |  |  |  |  |  |  |
| ATTN MUTUAL FUNDS DEPT 4TH FLOOR |  |  |  |  |  |  |  |
| 499 WASHINGTON BLVD |  |  |  |  |  |  |  |
| JERSEY CITY NJ 07310-1995 |  |  |  |  |  |  |  |
| PERSHING LLC\* |  | 8.70% | 12.31% |  |  |  |  |
| 1 PERSHING PLZ |  |  |  |  |  |  |  |
| JERSEY CITY NJ 07399-0001 |  |  |  |  |  |  |  |
| RAYMOND JAMES\* |  | 9.41% |  |  |  |  |  |
| OMNIBUS FOR MUTUAL FUNDS |  |  |  |  |  |  |  |
| ATTN MUTUAL FUND RECONCILIATION 14G |  |  |  |  |  |  |  |
| 880 CARILLON PKWY |  |  |  |  |  |  |  |
| ST PETERSBURG FL 33716-1100 |  |  |  |  |  |  |  |
| RBC CAPITAL MARKETS LLC\* |  |  |  | 19.29% |  |  |  |
| MUTUAL FUND OMNIBUS PROCESSING |  |  |  |  |  |  |  |
| ATTN MUTUAL FUNDS OPS MANAGER |  |  |  |  |  |  |  |
| 250 NICOLLET MALL STE 1400 |  |  |  |  |  |  |  |
| MINNEAPOLIS MN 55401-7582 |  |  |  |  |  |  |  |
| UBS WM USA\* |  | 8.58% |  | 5.82% |  |  |  |
| OMNI ACCOUNT M/F |  |  |  |  |  |  |  |
| SPEC CDY A/C EBOC UBSFSI |  |  |  |  |  |  |  |
| 1000 HARBOR BLVD |  |  |  |  |  |  |  |
| WEEHAWKEN NJ 07086-6761 |  |  |  |  |  |  |  |
| DCGT AS TTEE AND/OR CUST |  | 6.57% |  |  |  |  |  |
| FBO PLIC VARIOUS RETIREMENT PLANS |  |  |  |  |  |  |  |
| OMNIBUS |  |  |  |  |  |  |  |
| ATTN NPIO TRADE DESK |  |  |  |  |  |  |  |
| 711 HIGH ST |  |  |  |  |  |  |  |
| DES MOINES IA 50392-0001 |  |  |  |  |  |  |  |
| EMPOWER ANNUITY INSURANCE |  | 20.61% |  |  |  |  |  |
| FUTURE FUNDS II |  |  |  |  |  |  |  |
| 8515 E ORCHARD RD 2T2 |  |  |  |  |  |  |  |
| GREENWOOD VILLAGE CO 80111-5002 |  |  |  |  |  |  |  |

---

---

| | | | |
|:---|:---|:---|:---|
| MATRIX TRUST COMPANY AS AGENT FOR | 5.90% |  |  |
| ADVISOR TRUST INC. |  |  |  |
| RHONDA LOCKHART 403B |  |  |  |
| 717 17TH STREET |  |  |  |
| SUITE 1300 |  |  |  |
| DENVER CO 80202-3304 |  |  |  |
| MATRIX TRUST COMPANY AS AGENT FOR | 6.97% |  |  |
| ADVISOR TRUST INC. |  |  |  |
| STEVE DARNELL 403B |  |  |  |
| 717 17TH STREET, SUITE 1300 |  |  |  |
| DENVER CO 80202-3304 |  |  |  |
| STATE STREET BANK |  | 46.20% | 21.96% |
| TRUSTEE AND/OR CUSTODIAN |  |  |  |
| FBO ADP ACCESS PRODUCT |  |  |  |
| 1 LINCOLN STREET |  |  |  |
| BOSTON MA 02111-2901 |  |  |  |
| VOYA RETIREMENT INSURANCE & ANNUITY |  |  | 8.73% |
| COMPANY |  |  |  |
| ATTN MICHAEL KAMINSKI |  |  |  |
| 1 ORANGE WAY |  |  |  |
| WINDSOR CT 06095-4773 |  |  |  |

---

 

\*Denotes record owner of Fund shares only

**American Beacon SSI Alternative Income Fund**

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Shareholder Address** | **Fund Percentage (listed if over 25%)** | **Y CLASS** | **R5 CLASS** | **Investor CLASS** |
| CHARLES SCHWAB & CO INC\* |  | 7.69% |  | 57.93% |
| SPECIAL CUST A/C |  |  |  |  |
| EXCLUSIVE BENEFIT OF CUSTOMERS |  |  |  |  |
| ATTN MUTUAL FUNDS |  |  |  |  |
| 211 MAIN ST |  |  |  |  |
| SAN FRANCISCO CA 94105-1901 |  |  |  |  |
| LPL FINANCIAL\* |  | 17.11% |  |  |
| 4707 EXECUTIVE DR |  |  |  |  |
| SAN DIEGO CA 92121-3091 |  |  |  |  |
| NATIONAL FINANCIAL SERVICES LLC\* |  | 16.42% |  | 30.52% |
| FOR EXCLUSIVE BENEFIT OF |  |  |  |  |
| OUR CUSTOMERS |  |  |  |  |
| ATTN MUTUAL FUNDS DEPT 4TH FLOOR |  |  |  |  |
| 499 WASHINGTON BLVD |  |  |  |  |
| JERSEY CITY NJ 07310-1995 |  |  |  |  |
| PERSHING LLC\* |  | 9.07% | 6.00% |  |
| 1 PERSHING PLZ |  |  |  |  |
| JERSEY CITY NJ 07399-0001 |  |  |  |  |
| UBS WM USA\* |  | 20.62% |  |  |
| OMNI ACCOUNT M/F |  |  |  |  |
| SPEC CDY A/C EBOC UBSFSI |  |  |  |  |
| 1000 HARBOR BLVD |  |  |  |  |
| WEEHAWKEN NJ 07086-6761 |  |  |  |  |
| WELLS FARGO CLEARING SERVICES LLC\* |  | 17.31% |  |  |
| SPECIAL CUSTODY ACCT FOR THE |  |  |  |  |

---

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Shareholder Address** | **Fund Percentage (listed if over 25%)** | **Y CLASS** | **R5 CLASS** | **Investor CLASS** |
| EXCLUSIVE BENEFIT OF CUSTOMERS |  |  |  |  |
| 2801 MARKET ST |  |  |  |  |
| ST LOUIS MO 63103-2523 |  |  |  |  |
| AMERICAN UNITED LIFE INS CO GROUP |  |  | 70.50% |  |
| RETIREMENT ACCOUNT |  |  |  |  |
| PO BOX 368 |  |  |  |  |
| INDIANAPOLIS IN 46206-0368 |  |  |  |  |
| SEI PRIVATE TRUST COMPANY |  | 7.76% |  |  |
| C/O FIRST HAWAIIAN BANK |  |  |  |  |
| ONE FREEDOM VALLEY DR |  |  |  |  |
| OAKS PA 19456-9989 |  |  |  |  |
| WELLS FARGO BANK NA FBO |  |  | 22.90% |  |
| OMNIBUS CASH CASH |  |  |  |  |
| PO BOX 1533 |  |  |  |  |
| MINNEAPOLIS MN 55480-1533 |  |  |  |  |

---

 

\*Denotes record owner of Fund shares only

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PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE

![](img_1.jpg)

**American Beacon TwentyFour Short Term Bond Fund**

**American Beacon TwentyFour Strategic Income Fund**

Supplement dated November 7, 2025, to the

Statement of Additional Information ("SAI"), dated November 3, 2025

&nbsp;&nbsp;&nbsp;&nbsp;**I.** On
 pages 50-52 of the SAI, under the heading **"CONTROL PERSONS AND 5% SHAREHOLDERS,"** the second paragraph and the tables are deleted and replaced with the following:

Set forth below are entities or persons that owned 5% or more of the outstanding shares of a class of each Fund as of October 6, 2025. The Trustees and officers of the Trusts, as a group, owned less than 1% of all classes of each Fund's shares outstanding as of that date.

**American Beacon TwentyFour Strategic Income Fund**

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| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Shareholder Address** | **Fund Percentage (listed if over 25%)** | **A Class** | **C Class** | **Y Class** | **R5 CLASS** | **Investor CLASS** |
| CHARLES SCHWAB & CO INC\* |  | 8.49% | 18.83% | 15.76% | 24.70% | 63.41% |
| SPECIAL CUST A/C |  |  |  |  |  |  |
| EXCLUSIVE BENEFIT OF CUSTOMERS |  |  |  |  |  |  |
| ATTN MUTUAL FUNDS |  |  |  |  |  |  |
| 211 MAIN ST |  |  |  |  |  |  |
| SAN FRANCISCO CA 94105-1901 |  |  |  |  |  |  |
| LPL FINANCIAL\* |  |  |  | 16.08% |  |  |
| 4707 EXECUTIVE DR |  |  |  |  |  |  |
| SAN DIEGO CA 92121-3091 |  |  |  |  |  |  |
| MORGAN STANLEY SMITH BARNEY LLC\* |  | 24.08% | 21.56% | 7.61% |  |  |
| FOR THE EXCLUSIVE BENE OF ITS CUST |  |  |  |  |  |  |
| 1 NEW YORK PLZ FL 12 |  |  |  |  |  |  |
| NEW YORK NY 10004-1965 |  |  |  |  |  |  |
| NATIONAL FINANCIAL SERVICES LLC\* |  |  |  | 16.73% | 13.15% | 19.44% |
| FOR EXCLUSIVE BENEFIT OF OUR CUSTOMERS |  |  |  |  |  |  |
| ATTN MUTUAL FUNDS DEPT 4TH FLOOR |  |  |  |  |  |  |
| 499 WASHINGTON BLVD |  |  |  |  |  |  |
| JERSEY CITY NJ 07310-1995 |  |  |  |  |  |  |
| PERSHING LLC\* |  | 23.73% | 27.69% |  |  | 5.43% |
| 1 PERSHING PLZ |  |  |  |  |  |  |
| JERSEY CITY NJ 07399-0001 |  |  |  |  |  |  |
| RAYMOND JAMES\* |  | 29.83% | 18.57% | 17.30% |  |  |
| OMNIBUS FOR MUTUAL FUNDS |  |  |  |  |  |  |
| ATTN MUTUAL FUND RECONCILIATION 14G |  |  |  |  |  |  |
| 880 CARILLON PKWY |  |  |  |  |  |  |
| ST PETERSBURG FL 33716-1100 |  |  |  |  |  |  |
| WELLS FARGO CLEARING SERVICES LLC\* |  |  | 11.09% | 13.74% |  |  |
| SPECIAL CUSTODY ACCT FOR THE |  |  |  |  |  |  |
| EXCLUSIVE BENEFIT OF CUSTOMERS |  |  |  |  |  |  |
| 2801 MARKET ST |  |  |  |  |  |  |
| ST LOUIS MO 63103-2523 |  |  |  |  |  |  |
| RELIANCE TRUST CO FBO |  |  |  |  | 22.36% |  |
| DEUTSCHE BANK CC |  |  |  |  |  |  |
| PO BOX 570788 |  |  |  |  |  |  |
| ATLANTA GA 30357-3114 |  |  |  |  |  |  |

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24-110725

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| | |
|:---|:---|
| SEI PRIVATE TRUST COMPANY | 34.41% |
| ATTN MUTUAL FUNDS |  |
| 1 FREEDOM VALLEY DR |  |
| OAKS PA 19456-9989 |  |

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\*Denotes record owner of Fund shares only

**American Beacon TwentyFour Short Term Bond Fund**

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Shareholder Address** | **Fund Percentage (listed if over 25%)** | **A CLASS** | **C CLASS** | **Y CLASS** | **R6 CLASS** |
| CHARLES SCHWAB & CO INC\* | 51.02% | 62.35% |  | 60.61% |  |
| SPECIAL CUST A/C |  |  |  |  |  |
| EXCLUSIVE BENEFIT OF CUSTOMERS |  |  |  |  |  |
| ATTN MUTUAL FUNDS |  |  |  |  |  |
| 211 MAIN ST |  |  |  |  |  |
| SAN FRANCISCO CA 94105-1901 |  |  |  |  |  |
| NATIONAL FINANCIAL SERVICES LLC\* |  |  |  | 23.46% |  |
| FOR EXCLUSIVE BENEFIT OF |  |  |  |  |  |
| OUR CUSTOMERS |  |  |  |  |  |
| ATTN MUTUAL FUNDS DEPT 4TH FLOOR |  |  |  |  |  |
| 499 WASHINGTON BLVD |  |  |  |  |  |
| JERSEY CITY NJ 07310-1995 |  |  |  |  |  |
| PERSHING LLC\* |  | 37.28% | 91.70% | 8.53% |  |
| 1 PERSHING PLZ |  |  |  |  |  |
| JERSEY CITY NJ 07399-0001 |  |  |  |  |  |
| AMERICAN BEACON ADVISORS |  |  |  |  | 99.97% |
| 220 LAS COLINAS BLVD E STE 1200 |  |  |  |  |  |
| IRVING TX 75039-5500 |  |  |  |  |  |
| LESLIE HERMAN |  |  | 6.95% |  |  |
| PO BOX 219643 |  |  |  |  |  |
| KANSAS CITY, MO 64121-9643 |  |  |  |  |  |
| MILLENNIUM TRUST CO LLC\* |  |  |  | 5.01% |  |
| FBO VARIOUS BENEFICIARIES |  |  |  |  |  |
| 2001 SPRING ROAD |  |  |  |  |  |
| SUITE 700 |  |  |  |  |  |
| OAK BROOK IL 60523-1890 |  |  |  |  |  |

---

\*Denotes record owner of Fund shares only

\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*

PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE