# EDGAR Filing Document

**Accession Number:** 0000809593
**File Stem:** 0001133228-26-001640
**Filing Date:** 2026-2
**Character Count:** 7382
**Document Hash:** f275c43003573c064da537104a83201b
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001133228-26-001640.hdr.sgml**: 20260218

**ACCESSION NUMBER**: 0001133228-26-001640

**CONFORMED SUBMISSION TYPE**: 485BXT

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260218

**DATE AS OF CHANGE**: 20260218

**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:** 485BXT
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-04984
- **FILM NUMBER:** 26646173

**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
**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:** 485BXT
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 033-11387
- **FILM NUMBER:** 26646172

**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 DoubleLine Select Income Fund (Series ID: S000097955)

| Class ID   | Class Name     | Ticker Symbol   |
|:---|:---|:---|
| C000267489 | Investor Class | BILTX           |
| C000267490 | Y Class        | BILDX           |
| C000269735 | R6 Class       | BILRX           |

As filed with the Securities and Exchange Commission on February 18, 2026

1933 Act File No. 033-11387

1940 Act File No. 811-04984

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

Washington, D.C. 20549

**FORM N-1A**

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 ☒

Pre-Effective Amendment No. ☐ <br> Post-Effective Amendment No. 441 ☒

&nbsp;&nbsp;and/or

REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940 ☒

Amendment No. 441 ☒

&nbsp;&nbsp;(Check appropriate box or boxes.)

**AMERICAN BEACON FUNDS**

(Exact Name of Registrant as Specified in Charter)

220 East Las Colinas Boulevard, Suite 1200

Irving, Texas 75039

(Address of Principal Executive Offices) (Zip Code)

Registrant's Telephone Number, including Area Code: (817) 391-6100

Gregory J. Stumm, President 220 East Las Colinas Boulevard Suite 1200 Irving, Texas 75039 (Name and Address of Agent for Service) With copies to: Kathy K. Ingber, Esq. K&L Gates LLP 1601 K Street, NW Washington, D.C. 20006-1600

It is proposed that this filing will become effective (check appropriate box)

☐ immediately upon filing pursuant to paragraph (b)

☒ on February 23, 2026 pursuant to paragraph (b)

☐ 60 days after filing pursuant to paragraph (a)(1)

☐ on (date) pursuant to paragraph (a)(1)

☐ 75 days after filing pursuant to paragraph (a)(2)

☐ on (date) pursuant to paragraph (a)(2) of Rule 485

If appropriate, check the following box:

☒ This
 post-effective amendment designates a new effective date for a previously filed post-effective amendment.

**Explanatory Note**

This Post-Effective Amendment No. 441 to the Registrant's Registration Statement on Form N-1A is being filed pursuant to paragraph (b)(1)(iii) of Rule 485 of the Securities Act of 1933, as amended (the "1933 Act"), solely for the purpose of delaying, until February 23, 2026, the effectiveness of the registration statement for the American Beacon DoubleLine Select Income Fund (the "Fund"), filed in Post-Effective Amendment No. 433 ("PEA No. 433") on October 15, 2025, pursuant to paragraph (a) of Rule 485 of the 1933 Act. No other series of the Registrant is affected by the filing. Since no other changes are intended to be made to PEA No. 433 by means of this filing, Parts A, B and C of PEA No. 433 are incorporated herein by reference.

**PART A – PROSPECTUS**

The Prospectus for the Fund is incorporated herein by reference to [Part A of PEA No. 433.](https://www.sec.gov/Archives/edgar/data/809593/000113322825010865/abdsi-efp18425_485apos.htm)

**PART B – STATEMENT OF ADDITIONAL INFORMATION**

The Statement of Additional Information for the Fund is incorporated herein by reference to [Part B of PEA No. 433.](https://www.sec.gov/Archives/edgar/data/809593/000113322825010865/abdsi-efp18425_485apos.htm)

**PART C – OTHER INFORMATION**

The Part C for the Fund is incorporated herein by reference to [Part C of PEA No. 433.](https://www.sec.gov/Archives/edgar/data/809593/000113322825010865/abdsi-efp18425_485apos.htm)

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, as amended ("1933 Act"), and the Investment Company Act of 1940, as amended, the Registrant represents that this Amendment meets all the requirements for effectiveness pursuant to Rule 485(b) under the 1933 Act and has duly caused this Post-Effective Amendment No. 441 to its Registration Statement on Form N-1A to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Irving and the State of Texas, on February 18, 2026.

---

| | |
|:---|:---|
| AMERICAN BEACON FUNDS | AMERICAN BEACON FUNDS |
| By: | /s/ Gregory J. Stumm |
|  | Gregory J. Stumm |
|  | President |

---

Pursuant to the requirements of the 1933 Act, this Post-Effective Amendment No. 441 to the Registration Statement has been signed below by the following persons in the capacities and on the dates indicated.

---

| | | |
|:---|:---|:---|
| <u>Signature</u> | <u>Title</u> | <u>Date</u> |
| /s/ Gregory J. Stumm | President (Principal Executive Officer) | February 18, 2026 |
| Gregory J. Stumm |  |  |
| /s/ Melinda G. Heika | Treasurer (Principal Financial Officer | February 18, 2026 |
| Melinda G. Heika | and Principal Accounting Officer) |  |
| Gilbert G. Alvarado\* | Trustee | February 18, 2026 |
| Gilbert G. Alvarado |  |  |
| Gerard J. Arpey\* | Trustee | February 18, 2026 |
| Gerard J. Arpey |  |  |
| Eugene J. Duffy\* | Trustee | February 18, 2026 |
| Eugene J. Duffy<br>Claudia A. Holz\* | <br>Trustee | <br>February 18, 2026 |
| Claudia A. Holz<br>|  |  |
| Douglas A. Lindgren\* | Chair and Trustee | February 18, 2026 |
| Douglas A. Lindgren |  |  |
| Janet C. Smith\* | Trustee | February 18, 2026 |
| Janet C. Smith |  |  |
| Paul Zemsky\* | Trustee | February 18, 2026 |
| Paul Zemsky |  |  |

---

---

| | |
|:---|:---|
| \*By | /s/ Rosemary K. Behan<sup>1</sup> |
|  | Rosemary K. Behan |
|  | Attorney-In-Fact |

---

<sup>1</sup>Signed pursuant to previously filed power of attorney.