# EDGAR Filing Document

**Accession Number:** 0000809593
**File Stem:** 0001133228-26-002446
**Filing Date:** 2026-2
**Character Count:** 48501
**Document Hash:** b86048fa0fe5b912fe9c4a5cd8b0343a
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001133228-26-002446.hdr.sgml**: 20260227

**ACCESSION NUMBER**: 0001133228-26-002446

**CONFORMED SUBMISSION TYPE**: 497K

**PUBLIC DOCUMENT COUNT**: 3

**FILED AS OF DATE**: 20260227

**DATE AS OF CHANGE**: 20260227

**EFFECTIVENESS DATE**: 20260227

**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:** 497K
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 033-11387
- **FILM NUMBER:** 26695094

**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 IMC International Small Cap Fund (Series ID: S000063601)

| Class ID   | Class Name     | Ticker Symbol   |
|:---|:---|:---|
| C000206039 | R5 Class       | TOVIX           |
| C000206040 | Investor Class | TIVFX           |
| C000206041 | Y Class        | TOVYX           |

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| | |
|:---|:---|
| American Beacon<br>IMC International Small Cap Fund<sup>SM</sup> | ![](sp2731img001.jpg) |

---

 **SUMMARY PROSPECTUS** **March 1, 2026**<br>

Before you invest, you may want to review the Fund's prospectus and statement of additional information, which contain more information about the Fund and its risks. The current prospectus and statement of additional information, dated March 1, 2026, are incorporated by reference into this summary prospectus. You can find the Fund's prospectus, statement of additional information, reports to shareholders, and other information about the Fund online at www.americanbeaconfunds.com/resource_center/MutualFundForms.aspx. You can also get this information at no cost by calling 1-800-658-5811 or by sending an email request to americanbeaconfunds@ambeacon.com.

 **Share Class \| Y:** **TOVYX \| R5:** **TOVIX \| Investor:** **TIVFX**<br>

Investment Objective

The Fund's investment objective is long-term capital appreciation.

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the Fund. **You may pay other fees, such as brokerage** **commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below**. More information is available from your financial professional and in "Choosing Your Share Class" on page 16 of the Prospectus.

**Shareholder Fees** (fees paid directly from your investment)

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| | | | |
|:---|:---|:---|:---|
|  **Share Class** | **Y** | **R5** | **Investor** |
| Maximum sales charge imposed on purchases (as a percentage of offering price) |  |  |  |
| Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) |  |  |  |

---

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| | | | |
|:---|:---|:---|:---|
| **Annual Fund Operating Expenses** (Expenses that you pay each year as a percentage of the value of your investment) | **Annual Fund Operating Expenses** (Expenses that you pay each year as a percentage of the value of your investment) | **Annual Fund Operating Expenses** (Expenses that you pay each year as a percentage of the value of your investment) | **Annual Fund Operating Expenses** (Expenses that you pay each year as a percentage of the value of your investment) |
|  **Share Class** | **Y** | **R5** | **Investor** |
| Management Fees | 0.75% | 0.75% | 0.75% |
| Distribution and/or Service (12b-1) Fees | 0.00% | 0.00% | 0.00% |
| Other Expenses<sup>1</sup> | 0.48% | 0.43% | 0.69% |
| **Total Annual Fund Operating Expenses** | **1.23%** | **1.18%** | **1.44%** |
| Fee Waiver and/or expense reimbursement<sup>2</sup> | (0.12%) | (0.28%) | (0.13%) |
| **Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement** | **1.11%** | **0.90%** | **1.31%** |

---

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| | |
|:---|:---|
| 1 | Other Expenses for each share class include 0.01% of loan interest and securities lending expenses. |

---

---

| | |
|:---|:---|
| 2 | American Beacon Advisors, Inc. (the "Manager") has contractually agreed to waive fees and/or reimburse expenses of the Fund's Y Class, R5 Class and Investor Class shares, as applicable, through February 28, 2027 to the extent that Total Annual Fund Operating Expenses exceed 1.10% for the Y Class, 0.89% for the R5 Class, and 1.30% for the Investor Class (excluding taxes, interest, brokerage commissions, acquired fund fees and expenses, securities lending fees, expenses associated with securities sold short, litigation, and other extraordinary expenses). The contractual expense reimbursement can be changed or terminated only in the discretion and with the approval of a majority of the Fund's Board of Trustees. The Manager will itself waive fees and/or reimburse expenses of the Fund to maintain the contractual expense ratio caps for each applicable class of shares or make arrangements with other service providers to do so. The Manager can be reimbursed by the Fund for any contractual fee waivers or expense reimbursements if reimbursement to the Manager (a) occurs within three years from the date of the Manager's waiver/reimbursement and (b) does not cause the Total Annual Fund Operating Expenses of a class to exceed the lesser of the contractual percentage limit in effect at the time of the waiver/reimbursement or the time of the recoupment. |

---

**Example**

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same, except that the Example reflects the fee waiver/expense reimbursement arrangement for each share class through February 28, 2027. Although your actual costs may be higher or lower, based on these assumptions, whether you redeem or hold your shares, your costs would be:

---

| | | | | |
|:---|:---|:---|:---|:---|
|  **Share Class** | **1 Year** | **3 Years** | **5 Years** | **10 Years** |
| Y | $113 | $378 | $664 | $1478 |
| R5 | $92 | $347 | $622 | $1407 |
| Investor | $133 | $443 | $775 | $1713 |

---

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the Example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 209% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, the Fund invests at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in equity securities of small market capitalization companies that are economically tied to countries outside of the United States, including developed and emerging market countries.

The Fund considers a company to be economically tied to a country outside of the United States if the company is included in the MSCI® ACWI ex USA Small Cap Index or is otherwise classified by MSCI as a non-United States company. The Fund may also consider other companies to be economically tied to a country outside of the United States if the sub-advisor determines that:

IMC030126

**American Beacon IMC International Small Cap Fund** - Summary Prospectus**1**

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■ the
 company's security is primarily listed for trading in a non-United States market;

■ the
 company is headquartered in a non-United States country; or

■ the
 company has at least half of its assets or derives at least half of its revenues outside the United States.

The Fund considers small market capitalization companies to have market capitalizations within the market capitalization range of the companies in the MSCI ACWI ex USA Small Cap Index. The market capitalization range of the MSCI ACWI ex USA Small Cap Index was $138.33 million to $13.08 billion as of December 31, 2025. The Fund may also hold smaller companies considered micro-capitalization companies, as well as mid-capitalization companies. The Fund invests principally in equity securities, which may include common stocks and U.S. dollar-denominated foreign stocks traded on U.S. exchanges. The Fund's investments in equity securities may be denominated in foreign currencies, and the Fund may invest directly in foreign currencies.

The investment process of the Fund's sub-advisor is based on bottom-up analysis of companies rather than top-down country or sector allocation. The sub-advisor's process is intended to add long-term value primarily through stock selection. The Fund may have significant exposure to emerging market securities and European companies, and to the Industrials sector. However, as the composition of the Fund's portfolio changes over time, the Fund's exposure to emerging markets and Europe, and to the Industrials sector, may be lower at a future date, and the Fund's exposure to other countries or regions, or other market sectors, may be higher.

The sub-advisor seeks to generate returns by harnessing the power of the momentum premium, which is the principle that companies that have outperformed in the recent past will continue to outperform for a period of time. The sub-advisor seeks to exploit behavioral biases around change, which cause investors to underreact to new information. The sub-advisor believes these underreactions to new information lead to opportunities to invest in companies with improving or accelerating financial performance that is expected to continue, otherwise known as momentum. The sub-advisor's disciplined "Informed Momentum" approach to investing combines stock selection, tailored risk management, and efficient implementation to seek to harness the momentum premium to generate returns. The stocks of companies held by the Fund may exhibit characteristics of both value stocks and growth stocks during the time they are held by the Fund. The Fund holds approximately 100-150 investments.

The Fund may also invest cash balances in other investment companies, including a government money market fund advised by the Manager, with respect to which the Manager also receives a management fee. The Fund may seek to earn additional income by lending its securities to certain qualified broker-dealers and institutions.

The Fund may engage in active and frequent trading of portfolio securities to achieve its principal investment strategies.

Principal Risks

There is no assurance that the Fund will achieve its investment objective, and you could lose part or all of your investment in the Fund. **The Fund is not** **designed for investors who need an assured level of current income and is intended to be a long-term investment. The Fund is not a complete** **investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk** **tolerance before investing in the Fund.** The principal risks of investing in the Fund listed below are presented in alphabetical order and not in order of importance or potential exposure. Among other matters, this presentation is intended to facilitate your ability to find particular risks and compare them with the risks of other funds. Each risk summarized below is considered a "principal risk" of investing in the Fund, regardless of the order in which it appears.

**Currency Risk**<br>The Fund may have exposure to foreign currencies. Foreign currencies may fluctuate significantly over short periods of time, may be affected unpredictably by intervention, or the failure to intervene, of the U.S. or foreign governments or central banks, and may be affected by currency controls or political developments in the U.S. or abroad. Foreign currencies may also decline in value relative to the U.S. dollar and other currencies and thereby affect the Fund's investments.

**Cybersecurity and Operational Risk**<br>Operational risks arising from, among other problems, human errors, systems and technology disruptions or failures, or cybersecurity incidents may negatively impact the Fund, its service providers and third-party fund distribution platforms, including the ability of shareholders to transact in the Fund's shares, and result in financial losses. Cybersecurity incidents may allow an unauthorized party to gain access to Fund assets, shareholder data, or proprietary information, or cause the Fund or its service providers, as well as securities trading venues and their service providers, to suffer data corruption or lose operational functionality. Cybersecurity incidents can result from deliberate attacks or unintentional events. It is not possible for the Fund or its service providers to identify all of the operational risks that may affect the Fund or to develop processes and controls to completely eliminate or mitigate their occurrence or effects. The Fund cannot control the cybersecurity and operational plans and systems of its service providers, its counterparties or the issuers of securities in which the Fund invests. The issuers of the Fund's investments are likely to be dependent on computers for their operations and require ready access to their data and the internet to conduct their business. Thus, cybersecurity incidents could also affect issuers of the Fund's investments, leading to significant loss of value.

**Emerging Markets Risk**<br>When investing in emerging markets, the risks of investing in foreign securities are heightened. Emerging markets are generally smaller, less developed, less liquid and more volatile than the securities markets of the U.S. and other developed markets. There are also risks of: greater political or economic uncertainties; an economy's dependence on revenues from particular commodities or on international aid or development assistance; currency transfer restrictions; a limited number of potential buyers for such securities resulting in increased volatility and limited liquidity for emerging market securities; trading suspensions and other restrictions on investment; delays and disruptions in securities clearing and settlement procedures; and significant limitations on investor rights and recourse. The governments of emerging market countries may also be more unstable and more likely to impose capital controls, nationalize a company or industry, place restrictions on foreign ownership and on withdrawing sale proceeds of securities from the country, intervene in the financial markets, and/or impose burdensome taxes that could adversely affect security prices. In addition, there may be less publicly available information about issuers in emerging markets than would be available about issuers in more developed capital markets, and such issuers may not be subject to accounting, auditing, financial reporting and recordkeeping standards and requirements comparable to those to which U.S. companies are subject.

**Equity Investments Risk**<br>Equity securities represent ownership interests in companies and are subject to investment risk, issuer risk and market risk. In general, the values of stocks and other equity securities fluctuate, and sometimes widely fluctuate, in response to changes in a company's financial condition as well as general market, economic and political conditions and other factors. The Fund may experience a significant or complete loss on its investment in an equity security. In addition, stock prices may be particularly sensitive to rising interest rates, which increase borrowing costs and the costs of capital. The Fund may invest in the following equity securities, which may expose the Fund to the following additional risks:

■ Common
 Stock Risk. The value
 of a company's common stock may fall as a result of factors affecting the company, companies in the same industry or sector, or
 the financial markets overall. Common stock generally is subordinate to preferred stock upon the liquidation or bankruptcy of the issuing
 company.

■ U.S.
 Dollar-Denominated Foreign Stocks Traded on U.S. Exchanges Risk. Foreign (non-U.S.) companies that list their stocks on U.S. exchanges may be exempt from
 certain accounting and corporate governance standards that apply to U.S. companies that list on the same exchange. Performance of these
 stocks can be impacted
 by political and financial instability in the home country of a particular foreign company, and delisting of these stocks could impact
 the  Fund's ability to
 transact in such securities and could significantly impact their liquidity and market price.

**2** **American Beacon IMC International Small Cap Fund** - Summary Prospectus

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**Foreign Investing Risk**<br>Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks may include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity, (4) lack of uniform accounting, auditing, recordkeeping and financial reporting standards, (5) greater volatility, (6) different government regulation and supervision of foreign stock exchanges, brokers and listed companies, and (7) delays or failures in transaction payment and settlement in some foreign markets. Additionally, trading in foreign markets generally involves higher transaction costs than trading in U.S. markets. The Fund's investment in a foreign issuer may subject the Fund to regulatory, political, currency, security, economic and other risks associated with that country, including tariffs, trade disputes and sanctions. Global economic and financial markets have become increasingly interconnected and conditions (including recent volatility, terrorism, war and political instability) and events (including natural disasters) in one country, region or financial market may adversely impact issuers in a different country, region or financial market.

**Geographic Concentration Risk**<br>From time to time, based on market or economic conditions, the Fund may invest a significant portion of its assets in the securities of issuers located in, or with significant economic ties to, a single country or geographic region, which could increase the risk that economic, market, political, business, regulatory, diplomatic, social and environmental conditions in that particular country or geographic region may have a significant impact on the Fund's performance. Investing in such a manner could cause the Fund's performance to be more volatile than the performance of more geographically diverse funds. A decline in the economies or financial markets of one country or region may adversely affect the economies or financial markets of another.

■ European
 Securities Risk. The
 Fund's performance may be affected by political, social and economic conditions in Europe, such as growth of economic output (the
 gross national product of the countries in the region), the rate of inflation, the rate at which capital is reinvested into European economies,
 the success of governmental
 actions to reduce budget deficits, the resource self-sufficiency of European countries, the monetary exchange rates between European countries, and conflict between
 European countries. The European financial markets have experienced and may continue to experience volatility and adverse trends due to
 concerns relating to economic downturns; rising government debt levels and the possible default on government debt; national unemployment
 in several European
 countries; public health crises; political unrest; economic sanctions; inflation; energy crises; and war and military conflict, such as
 the Russian invasion of
 Ukraine. A default or debt restructuring by any European country could adversely impact holders of that country's debt and sellers
 of credit default swaps linked
 to that country's creditworthiness, which may be located in other countries. Such a default or debt restructuring could affect exposures
 to European countries.
 In addition, issuers have faced difficulties obtaining credit or refinancing existing obligations, and financial markets have experienced
 extreme volatility
 and declines in asset values and liquidity. These events have affected the exchange rate of the Euro and may continue to significantly
 affect European countries. <br> Responses
 to financial problems by European governments, central banks, and others, including austerity measures and other reforms, may not produce
 the desired results,
 may result in social unrest and may limit future growth and economic recovery or may have unintended consequences. The Fund makes investments
 in securities of issuers that are domiciled in member states of the European Union (the "EU"). The economies and markets of
 European countries are
 often closely connected and interdependent, and events in one country in Europe can have an adverse impact on other European countries.
 One or more countries
 may abandon the Euro and/or withdraw from the EU. The impact of these actions, especially if they occur in a disorderly fashion, could
 be significant and
 far-reaching. The United Kingdom's withdrawal from the EU could be an indication that one or more other countries may withdraw from
 the EU and/or abandon
 the Euro. These events and actions have affected, and may in the future affect, the value and exchange rate of the Euro and may continue
 to significantly affect
 the economies of every country in Europe, including countries that do not use the Euro and non-EU member states. <br> The
 continuing effects on the economies of European countries of the Russia/Ukraine war and Russia's response to sanctions imposed by
 the  U.S., EU, UK and others,
 are impossible to predict, but have been and could continue to be significant. For example, exports in Eastern Europe have been disrupted
 for certain key commodities,
 pushing commodity prices to record highs. Also, both wholesale energy prices and energy prices charged to consumers in Europe have increased
 significantly.

**Growth Companies Risk**<br>Growth companies are expected to increase their earnings at a certain rate. When these expectations are not met or decrease, the prices of these stocks may decline, sometimes sharply, even if earnings showed an absolute increase. The Fund's investments in growth companies may be more sensitive to company earnings and more volatile than the market in general primarily because their stock prices are based heavily on future expectations. If an assessment of the prospects for a company's growth is incorrect, then the price of the company's stock may fall or not approach the value placed on it. Growth company stocks may also lack the dividend yield that can cushion stock price declines in market downturns.

**High Portfolio Turnover** **Risk**<br>Portfolio turnover is a measure of the Fund's trading activity over a one-year period. A portfolio turnover rate of 100% would indicate that the Fund sold and replaced the entire value of its securities holdings during the period. The Fund may engage in active and frequent trading and may have a high portfolio turnover rate, which could increase the Fund's transaction costs, have a negative impact on performance, and generate higher capital gain distributions to shareholders than if the Fund had a lower portfolio turnover rate.

**Investment Risk**<br>An investment in the Fund is not a deposit with a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. When you sell your shares of the Fund, they could be worth less than what you paid for them. Therefore, you may lose money by investing in the Fund.

**Issuer Risk**<br>The value of, and/or the return generated by, a security may decline for a number of reasons that directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer's goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

**Market Risk**<br>The Fund is subject to the risk that the securities markets will move down, sometimes rapidly and unpredictably, based on overall economic conditions and other factors, which may negatively affect the Fund's performance. The financial markets generally move in cycles, with periods of rising prices followed by periods of declining prices. The value of your investment may reflect these fluctuations. During a general downturn in the securities markets, multiple asset classes may decline in value simultaneously. Even when certain securities prices have generally increased over time, there have been periods of price decreases during those times, resulting in losses for investors, which are likely to occur again in the future.

Geopolitical and other events, including war, terrorism, trade disputes, pandemics, public health crises, natural disasters, and cybersecurity incidents, have led, and in the future may continue to lead, to general instability in world economies and markets and reduced liquidity in securities, which may negatively affect the value of your investment.

Policies established by the U.S. government and/or Federal Reserve and economic and political circumstances within the U.S. and abroad, such as inflation, changes in interest rates, recessions, changes in government leadership, a government's inability to agree on a budget, high public debt, the threat or occurrence of a federal government shutdown and threats or the occurrence of a failure to increase the federal government's debt limit, which could result in a default on the government's obligations, may negatively affect investor and consumer confidence and may negatively impact financial markets and the broader economy, perhaps suddenly and to a significant degree.

**American Beacon IMC International Small Cap Fund** - Summary Prospectus**3**

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Markets and market participants are increasingly reliant upon public and proprietary data and systems. Data or technology malfunctions and inaccuracies may disrupt markets and lead to negative consequences for market participants like the Fund.

■ Recent
 Market Events Risk. Both U.S. and international markets have experienced significant volatility in recent months and years. As a result of such volatility, investment returns
 may fluctuate significantly. Moreover, during periods of significant volatility, the risks discussed herein associated with an investment
 in the Fund may be
 increased. National economies are substantially interconnected, as are global financial markets, which creates the possibility that conditions
 in one country or
 region might adversely impact issuers in a different country or region. However, the interconnectedness of economies and/or markets may
 be changing, which
 may impact such economies and markets in ways that cannot be foreseen at this time. <br> Some
 countries, including the  U.S., have adopted more protectionist trade policies, including trade tariffs and other trade barriers,
 which is a trend that appears to
 be continuing globally. The economies of all nations, including the U.S., are subject to the risks of slowing global economic growth,
 protectionist trade policies,
 inflationary pressures, limits imposed by international trade and security agreements, political or economic dysfunction, poor consumer
 sentiment, and reduced
 demand for goods due to fluctuating commodity prices and currency values, and these risks may create significant market volatility in
 ways that cannot be
 foreseen at the present time. These economic risks could have a negative impact on the Fund's investments. <br> The
 U.S. Federal Reserve and certain foreign central banks have started to lower interest rates, though economic or other factors could stop
 or reverse such changes.
 It is difficult to accurately predict the various economic and political factors that influence the pace at which interest rates might
 change, the timing, frequency
 or magnitude of any such changes in interest rates, or when such changes might stop or again reverse course. Changes in interest rates
 could lead to an economic
 slowdown in the U.S. and abroad, significant market volatility and reduced liquidity in certain sectors of the market. <br> Tensions,
 war, or open conflict between nations, such as between Russia and Ukraine, in the Middle East or in eastern Asia could affect the economies
 of many nations, including
 the United States. The duration of ongoing hostilities and sanctions cannot be predicted. Those events present material uncertainty and
 risk with respect
 to markets globally and the performance of the Fund and its investments or operations could be negatively impacted. <br> Advancements
 in technology, including advanced development and increased regulation of artificial intelligence, may adversely impact market movements
 and liquidity. As
 artificial intelligence is used more widely, which can occur relatively rapidly, the profitability and growth of certain issuers and industries
 may be negatively
 impacted in ways that cannot be foreseen and could adversely impact issuer and market performance. As a consequence, the Fund's
 holdings and its overall
 performance could be negatively impacted. <br> Global
 climate change may affect property and security values. Certain issuers, industries and regions may be adversely affected by the impacts
 of climate change
 in ways that cannot be foreseen. The impacts of legislation, regulation and international accords related to climate change, as well as
 any indirect consequences
 that may not be foreseen, may negatively impact certain issuers, industries and regions.

**Market Timing Risk**<br>The Fund is subject to the risk of market timing activities by investors due to the nature of the Fund's investments, which requires the Fund, in certain instances, to fair value certain of its investments. Some investors may engage in frequent short-term trading in the Fund to take advantage of any price differentials that may be reflected in the net asset value ("NAV") of the Fund's shares. Frequent trading by Fund shareholders poses risks to other shareholders in the Fund, including (i) the dilution of the Fund's NAV, (ii) an increase in the Fund's expenses, and (iii) interference with the ability to execute efficient investment strategies.

**Micro-Capitalization Companies Risk**<br>Micro-capitalization companies are subject to substantially greater risks of loss and price fluctuations, sometimes rapidly and unpredictably, because their earnings and revenues tend to be less predictable. Since micro-capitalization companies may not have an operating history, product lines, or financial resources, their share prices tend to be more volatile and their markets less liquid than companies with larger market capitalizations, and they can be sensitive to changes in overall economic conditions, interest rates, borrowing costs and earnings. The shares of micro-capitalization companies tend to trade less frequently than those of larger, more established companies, which can adversely affect the pricing of these securities and the future ability to sell these securities.

**Mid-Capitalization Companies Risk**<br>Investing in the securities of mid-capitalization companies involves greater risk and the possibility of greater price volatility, which at times can be rapid and unpredictable, than investing in larger-capitalization and more established companies. Since mid-capitalization companies may have narrower commercial markets and more limited operating history, product lines, and managerial and financial resources than larger, more established companies, the securities of these companies may lack sufficient market liquidity, and they can be particularly sensitive to changes in overall economic conditions, interest rates, borrowing costs and earnings.

**Other Investment Companies Risk**<br>To the extent that the Fund invests in shares of other registered investment companies, the Fund will indirectly bear the fees and expenses charged by those investment companies in addition to the Fund's direct fees and expenses. To the extent the Fund invests in other investment companies that invest in equity securities, fixed-income securities and/or foreign securities, or that track an index, the Fund is subject to the risks associated with the underlying investments held by the investment company or the index fluctuations to which the investment company is subject. The Fund will be subject to the risks associated with investments in those companies, including but not limited to the following:

■ Government
 Money Market Funds Risk. Investments in government money market funds are subject to interest rate risk, credit risk, and market risk. Interest rate risk is the risk
 that rising interest rates could cause the value of such an investment to decline. Credit risk is the
 risk that the issuer, guarantor or insurer of an
 obligation, or the  counterparty to a transaction, may fail or become less able or unwilling, to make timely payment of interest
 or principal or otherwise honor
 its obligations, or that it may default completely.

**Redemption Risk**<br>The Fund may experience periods of high levels of redemptions that could cause the Fund to sell assets at inopportune times or at a loss or depressed value. Heavy redemptions could hurt the Fund's performance. The sale of assets to meet redemption requests may create net capital gains, which could cause the Fund to have to distribute substantial capital gains. Redemption risk is greater to the extent that one or more investors or intermediaries control a large percentage of investments in the Fund. In addition, redemption risk is heightened during periods of declining or illiquid markets. During periods of heavy redemptions, the Fund may borrow funds through the interfund credit facility or from a bank line of credit, which may increase costs.

**Sector Risk**<br>When the Fund focuses its investments in certain sectors of the economy, its performance could fluctuate more widely than if the Fund were invested more evenly across sectors. Issuers in the same economic sector may be similarly affected by economic or market events, making the Fund more vulnerable to unfavorable developments in that economic sector than funds that invest more broadly. Additionally, individual sectors may be more volatile, and may perform differently, than the broader market. As the Fund's portfolio changes over time, the Fund's exposure to a particular sector may become higher or lower.

■ Industrials
 Sector Risk. The Industrials
 sector includes companies engaged in the construction, engineering, machinery, energy services, transportation, professional
 services, and aerospace and defense industries. Companies in the industrials sector may be adversely affected by changes in government regulation, world
 events and economic conditions. In addition, companies in the industrials sector may be adversely affected by environmental damage, product
 and environmental liability claims, changes in commodity prices and exchange rates, changes in the supply and demand for their products
 and services, and
 for industrials sector products generally, and product obsolescence, among other factors.

**4** **American Beacon IMC International Small Cap Fund** - Summary Prospectus

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**Securities Lending Risk**<br>To the extent the Fund lends its securities, it may be subject to the following risks: (i) the securities in which the Fund reinvests cash collateral may decrease in value, causing the Fund to incur a loss, or may not perform sufficiently to cover the Fund's payment to the borrower of a pre-negotiated fee or "rebate" for the use of that cash collateral in connection with the loan; (ii) non-cash collateral may decline in value, resulting in the Fund becoming under-secured; (iii) delays may occur in the recovery of loaned securities from borrowers, which could result in the Fund being unable to vote proxies or settle transactions or cause the Fund to incur increased costs; and (iv) if the borrower becomes subject to insolvency or similar proceedings, the Fund could incur delays in its ability to enforce its rights in its collateral.

**Securities Selection Risk**<br>Securities selected for the Fund may not perform to expectations. This could result in the Fund's underperformance compared to its performance index(es), or other funds with similar investment objectives or strategies.

**Small-Capitalization Companies Risk**<br>Investing in the securities of small-capitalization companies involves greater risk and the possibility of greater price volatility, which at times can be rapid and unpredictable, than investing in larger-capitalization and more established companies. Since small-capitalization companies may have narrower commercial markets, and more limited operating history, product lines, and managerial and financial resources than larger, more established companies, the securities of these companies may lack sufficient market liquidity and they can be particularly sensitive to changes in overall economic conditions, interest rates, borrowing costs and earnings.

**Valuation Risk**<br>Certain of the Fund's assets may be valued at a price different from the price at which they can be sold. This risk may be especially pronounced for investments that are illiquid or may become illiquid, or securities that trade in relatively thin markets and/or markets that experience extreme volatility. The valuation of the Fund's investments in an accurate and timely manner may be impacted by technological issues and/or errors by third party service providers, such as pricing services or accounting agents.

**Value Stocks Risk**<br>Value stocks are subject to the risk that their intrinsic or full value may never be realized by the market, that a stock judged to be undervalued may be appropriately priced, or that their prices may decline. Although value stocks tend to be inexpensive relative to their earnings, they can continue to be inexpensive for long periods of time. The Fund's investments in value stocks seek to limit potential downside price risk over time; however, value stock prices still may decline substantially. In addition, the Fund may produce more modest gains as a trade-off for this potentially lower risk. The Fund's investment in value stocks could cause the Fund to underperform funds that use a growth or non-value approach to investing or have a broader investment style.

Fund Performance

The bar chart and table below provide an indication of risk by showing changes in the Fund's performance over time. The bar chart shows how the Fund's performance has varied from year to year. The table shows how the Fund's average annual total returns compare to a broad-based securities market index, as well as an additional market index with characteristics that are similar to those of the Fund, for the periods indicated. Effective January 21, 2023, a new sub-advisor began managing the Fund and the Fund implemented a policy to invest at least 80% of its net assets, plus the amount of borrowings for investment purposes, in equity securities of small market capitalization companies that are economically tied to countries outside of the United States, including developed and emerging market countries. Performance through January 20, 2023 reflects the Fund's performance under the management and strategy of its prior sub-advisor.

Each of the Fund's share classes commenced operations on January 22, 2019. The Fund acquired the assets and liabilities of The Tocqueville International Value Fund, a series of The Tocqueville Trust, in a reorganization that closed upon the close of business on January 18, 2019. In connection with that reorganization, the Investor Class shares of the Fund have adopted the performance history and financial statements of the Fund's predecessor. In the bar chart and table below, the performance of the Fund's Investor Class shares for periods prior to January 22, 2019 reflects the returns of the shares of the Fund's predecessor. In the table below, the performance of the Y Class and R5 Class shares for periods prior to January 22, 2019 reflects the returns of the shares of the Fund's predecessor. The Y Class and R5 Class shares would have had similar annual returns to the shares of the Fund's predecessor because the shares of each class represent investments in the same portfolio securities. However, the shares of the Fund's predecessor had different expenses than the Y Class and R5 Class shares, which would affect performance. To the extent that the Fund's predecessor had lower expenses than a newer share class, the performance of the Fund's predecessor would likely have been higher than the newer share class would have realized during the same period. The Y Class and R5 Class performance shown in the table below has not been adjusted for differences in operating expenses between those share classes and the shares of the predecessor fund. You may obtain updated performance information on the Fund's website at www.americanbeaconfunds.com. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

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| | |
|:---|:---|
| **Calendar year total returns for Investor Class Shares.** Year Ended 12/31 | **Calendar year total returns for Investor Class Shares.** Year Ended 12/31 |
| ![](sp2731img002.jpg)<br>| &nbsp;&nbsp;&nbsp; **Highest Quarterly Return:**<br>**24.60%** 2nd Quarter 2025<br>01/01/2016 through 12/31/2025<br> **Lowest Quarterly Return:**<br>**-23.42%** 1st Quarter 2020<br>01/01/2016 through 12/31/2025 |

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**Average annual total returns** for periods ended December 31, 2025

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| | | | | |
|:---|:---|:---|:---|:---|
|  | **Inception Date** **of Class** | **1 Year** | **5 Years** | **10 Years** |
| **Investor Class** | **08/01/1994** |  |  |  |
| Returns Before Taxes |  | 36.03% | 6.81% | 6.76% |
| Returns After Taxes on Distributions |  | 32.94% | 5.45% | 6.02% |
| Returns After Taxes on Distributions and Sales of Fund Shares |  | 22.74% | 5.03% | 5.36% |

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**American Beacon IMC International Small Cap Fund** - Summary Prospectus**5**

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| | | | | |
|:---|:---|:---|:---|:---|
|  | **Inception Date** **of Class** | **1 Year** | **5 Years** | **10 Years** |
| **Share Class** (Before Taxes) |  |  |  |  |
| Y | 01/18/2019 | 36.30% | 7.03% | 6.91% |
| R5 | 01/18/2019 | 36.62% | 7.26% | 7.05% |

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| | | | |
|:---|:---|:---|:---|
|  | **1 Year** | **5 Years** | **10 Years** |
| **Index** (Reflects no deduction for fees, expenses or taxes, other than withholding taxes, as noted) |  |  |  |
| MSCI<sup>®</sup> EAFE Index (Net)\* | 31.22% | 8.92% | 8.18% |
| MSCI<sup>®</sup> ACWI ex USA Small Cap Index (Net)\* | 29.26% | 6.91% | 8.13% |

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\* Reflects the reinvestment of dividends after the deduction of withholding taxes, using a tax rate applicable to non-resident individuals who do not benefit from double taxation treaties.

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local income taxes. Actual after-tax returns depend on an investor's tax situation and may differ from those shown. The return after taxes on distributions and sale of Fund shares may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period. If you are a tax-exempt entity or hold your Fund shares through a tax-deferred arrangement, such as an individual retirement account ("IRA") or a 401(k) plan, the after-tax returns do not apply to your situation. After-tax returns are shown only for Investor Class shares of the Fund; after-tax returns for other share classes will vary.

Management

**The Manager**<br>The Fund has retained American Beacon Advisors, Inc. to serve as its Manager.

**Sub-Advisor**

The Fund's investment sub-advisor is Global IMC LLC (formerly known as EAM Global Investors LLC).

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Portfolio Managers

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| | | |
|:---|:---|:---|
| Global IMC LLC | **Travis Prentice**<br>Chief Investment Officer and Portfolio Manager<br>Since 2024<br> **Joshua Moss**<br>Managing Director and Portfolio Manager<br>Since 2023 | **John Scripp**<br>Managing Director and Portfolio Manager<br>Since 2023 |

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Purchase and Sale of Fund Shares

You may buy or sell shares of the Fund through a retirement plan, an investment professional, a broker-dealer, or other financial intermediary. You may purchase or redeem shares of the Fund on any day the New York Stock Exchange ("NYSE") is open, at the Fund's net asset value ("NAV") per share next calculated after your order is received in proper form, subject to any applicable sales charge. The Manager may, in its sole discretion, allow certain individuals to invest directly in the Fund. For more information regarding eligibility to invest directly please see "About Your Investment - Purchase and Redemption of Shares." Direct mutual fund account shareholders may buy subsequent shares or sell shares in various ways:

**6** **American Beacon IMC International Small Cap Fund** - Summary Prospectus

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| | | |
|:---|:---|:---|
| **Internet** | **www.americanbeaconfunds.com** | **www.americanbeaconfunds.com** |
| **Phone** | **To reach an American Beacon representative call 1-800-658-5811, option 1**<br> **Through the Automated Voice Response Service call 1-800-658-5811, option 2 (Investor Class only)** | **To reach an American Beacon representative call 1-800-658-5811, option 1**<br> **Through the Automated Voice Response Service call 1-800-658-5811, option 2 (Investor Class only)** |
| **Mail** | **American Beacon Funds**<br> **P.O. Box 219643**<br> **Kansas City, MO 64121-9643** | **Overnight Delivery:**<br> **American Beacon Funds**<br> **801 Pennsylvania Ave**<br> **Suite 219643**<br> **Kansas City, MO 64105-1307** |

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| | | | |
|:---|:---|:---|:---|
| | **New Account** | **Existing Account** | **Existing Account** |
| <br>**Share Class** | **Minimum Initial Investment Amount** | **Purchase/Redemption Minimum by** **Check/ACH/Exchange** | **Purchase/Redemption Minimum by** **Wire** |
| Investor | $2500 | $50 | $250 |
| Y | $100000 | $50 |  |
| R5 | $250000 | $50 |  |

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Tax Information

Dividends, capital gains distributions, and other distributions, if any, that you receive as a result of your investment in the Fund are subject to federal income tax and may also be subject to state and local income taxes, unless you are a tax-exempt entity or your account is tax-deferred, such as an individual retirement account ("IRA") or a 401(k) plan (in which case you may be taxed later, upon the withdrawal of your investment from such account or plan).

Payments to Broker-Dealers and Other Financial Intermediaries

If you purchase shares of the Fund through a broker-dealer or other financial intermediary (such as a bank), the Fund and the Fund's distributor, Resolute Investment Distributors, Inc., or the Manager may pay the intermediary for the sale of Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your individual financial professional to recommend the Fund over another investment. Ask your individual financial professional or visit your financial intermediary's website for more information.

**American Beacon IMC International Small Cap Fund** - Summary Prospectus**7**