497K

Summary Prospectus

May 1, 2025

SunAmerica Series Trust

SA Schroders VCP Global Allocation Portfolio

(Class 1 and Class 3 Shares)

SunAmerica Series Trust’s Statutory Prospectus and Statement of Additional Information, each dated May 1, 2025, as amended and supplemented from time to time, and the most recent shareholder reports are incorporated into and made part of this Summary Prospectus by reference. The Portfolio is offered only to the separate accounts of certain affiliated and unaffiliated life insurance companies and to other mutual funds. This Summary Prospectus is not intended for use by other investors.

Before you invest, you may want to review SunAmerica Series Trust’s Statutory Prospectus, which contains more information about the Portfolio and its risks. You can find the Statutory Prospectus and the above-incorporated information online at https://www.corebridgefinancial.com/getprospectus. You can also get this information at no cost by calling (800) 445-7862 or by sending an e-mail request to fundprospectus@corebridgefinancial.com.

The Securities and Exchange Commission and the Commodity Futures Trading Commission have not approved or disapproved these securities, nor have they determined that this Summary Prospectus is accurate or complete. It is a criminal offense to state otherwise.

Investment Goal

The Portfolio’s investment goal is to seek capital appreciation and income while managing portfolio volatility.

Fees and Expenses of the Portfolio

This table describes the fees and expenses that you may pay if you buy, hold and sell shares of the Portfolio. The table and the example below do not reflect the separate account fees charged in the variable annuity or variable life insurance policy (“Variable Contracts”) in which the Portfolio is offered. If separate account fees were shown, the Portfolio’s annual operating expenses would be higher. Please see your Variable Contract prospectus for more details on the separate account fees.

Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

	Class 1	Class 3
Management Fees	0.84%	0.84%
Service (12b-1) Fees	None	0.25%
Other Expenses	0.08%	0.08%
Acquired Fund Fees and Expenses1	0.01%	0.01%
Total Annual Portfolio Operating Expenses1	0.93%	1.18%
Fee Waivers and/or Expense Reimbursements2	0.02%	0.02%
Total Annual Portfolio Operating Expenses After Fee Waivers and/or Expense Reimbursements2	0.91%	1.16%

The Total Annual Portfolio Operating Expenses Before Fee Waivers and/or Expense Reimbursements do not correlate to the ratio of expenses to average net assets provided in the Financial Highlights table which reflects operating expenses of the Portfolio and do not include Acquired Fund Fees and Expenses.

Pursuant to an Expense Limitation Agreement, SunAmerica Asset Management, LLC (“SunAmerica” or the “Adviser”) has contractually agreed to waive its fees and/or reimburse expenses to the extent that the Total Annual Portfolio Operating Expenses of Class 1 and Class 3 shares exceed 0.90% and 1.15%, respectively, of the Portfolio’s average daily net assets. For purposes of the Expense Limitation Agreement, “Total Annual Portfolio Operating Expenses” shall not include extraordinary expenses (i.e., expenses that are unusual in nature and infrequent in occurrence, such as litigation), or acquired fund fees and expenses, brokerage commissions and other transactional expenses relating to the purchase and sale of portfolio securities, interest, taxes and governmental fees, and other expenses not incurred in the ordinary course of business of SunAmerica Series Trust (the “Trust”) on behalf of the Portfolio. Any waivers and/or reimbursements made by SunAmerica with respect to the Portfolio are subject to recoupment from the Portfolio within two years after the occurrence of the waivers and/or reimbursements, provided that the recoupment does not cause the expense ratio of the share class to exceed the lesser of (a) the expense limitation in effect at the time the waivers and/or reimbursements occurred, or (b) the current expense limitation of that share class. This agreement may be modified or discontinued prior to April 30, 2026, only with the approval of the Board of Trustees of the Trust, including a majority of the trustees who are not “interested persons” of the Trust as defined in the Investment Company Act of 1940, as amended.

Expense Example

This Example is intended to help you compare the cost of investing in the Portfolio with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Portfolio for the time periods indicated and then redeem or hold 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 Portfolio’s operating expenses remain the same (except that the

SunAmerica Series Trust

- 1 -

SA Schroders VCP Global Allocation Portfolio

Example incorporates any applicable fee waiver and/or expense limitation arrangements for only the first year). The Example does not reflect charges imposed by the Variable Contract. If the Variable Contract fees were reflected, the expenses would be higher. See the Variable Contract prospectus for information on such charges. Although your actual costs may be higher or lower, based on these assumptions and the net expenses shown in the fee table, your costs would be:

	1 Year	3 Years	5 Years	10 Years
Class 1	$93	$294	$513	$1,141
Class 3	118	373	647	1,430

Portfolio Turnover

The Portfolio 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. These costs, which are not reflected in annual portfolio operating expenses or in the Example, affect the Portfolio’s performance.

During the most recent fiscal year, the Portfolio’s portfolio turnover rate was 59% of the average value of its portfolio.

Principal Investment Strategies of the Portfolio

The Portfolio seeks to achieve its investment goal through flexible asset allocation driven by tactical and thematic ideas. The Portfolio obtains broad exposure to equity, fixed income and currency asset classes by investing in securities, exchange-traded funds (“ETFs”) and derivatives that provide exposure to these asset classes. The Portfolio invests in, or obtains exposure to, equity and fixed income securities of both U.S. and foreign corporate and governmental issuers, including emerging market issuers. The Portfolio normally invests in, or obtains exposure to, investments in a number of different countries around the world. In addition, the subadviser employs a “VCP” (Volatility Control Portfolio) risk management process intended to manage the volatility level of the Portfolio’s annual returns.

Under normal market conditions, the Portfolio targets an allocation of approximately 60% of its net assets to equity exposure and approximately 40% of its net assets to fixed income exposure, although the Portfolio’s equity exposure may range from approximately 50-70% of its net assets and its fixed income exposure may range from approximately 20-50% of its net assets. The Portfolio’s overall net equity exposure may be reduced to less than 50% and the net fixed income exposure to less than 20%

through the volatility control process described below. The subadviser makes use of fundamental macro research and proprietary asset allocation models to aid the asset allocation decision making process. By adjusting investment exposures among the various asset classes in the Portfolio, the subadviser seeks to reduce overall portfolio volatility and mitigate the effects of extreme market environments, while continuing to pursue the Portfolio’s investment goal.

The equity securities in which the Portfolio intends to invest, or obtain exposure to, include common and preferred stocks, warrants and convertible securities. The Portfolio may invest in, or obtain exposure to, equity securities of companies of any market capitalization. The foreign equity securities in which the Portfolio intends to invest, or obtain exposure to, may be denominated in U.S. dollars or foreign currencies and may be currency hedged or unhedged. The Portfolio will limit its investments in equity securities of emerging market issuers to 10% of its net assets.

The Portfolio’s fixed income exposure will be obtained through investment in, or exposure to, a range of fixed income instruments, including U.S. corporate debt securities, U.S. Government securities, foreign sovereign debt and supranational debt. The Portfolio may also invest in or obtain exposure to, other fixed income securities, including mortgage-backed and asset-backed securities, collateralized debt obligations, municipal securities, variable and floating rate obligations, zero coupon bonds, and TIPS.

In selecting securities for the Portfolio, the subadviser integrates environmental, social and governance (“ESG”) factors into its investment process. The subadviser evaluates the impact and risk around issues such as climate change, environmental performance, labor standards and corporate governance, which it views as important in its assessment of an issuer’s risk and potential for profitability.

The Portfolio may make substantial use of derivatives. The subadviser may seek to obtain, or reduce, exposure to one or more asset classes through the use of exchange-traded or over-the-counter derivatives, such as futures contracts, currency forwards, interest rate swaps, total return swaps, credit default swaps, inflation swaps, options (puts and calls) purchased or sold by the Portfolio, and structured notes. The Portfolio may use derivatives for a variety of purposes, including: as a hedge against adverse changes in the market price of securities, interest rates, or currency exchange rates; as a substitute for

SunAmerica Series Trust

- 2 -

SA Schroders VCP Global Allocation Portfolio

purchasing or selling securities; to increase the Portfolio’s return as a non-hedging strategy that may be considered speculative; and to manage portfolio characteristics.

The Portfolio incorporates a volatility control process that seeks to limit the volatility of the Portfolio to 10%. Volatility is a statistical measure of the magnitude of changes in the Portfolio’s returns over time without regard to the direction of those changes. The subadviser may use a variety of equity and fixed income futures and currency forwards as the principal tools to implement the volatility management strategy. In addition, the subadviser will seek to reduce exposure to certain downside risks by purchasing equity index put options that aim to reduce the Portfolio’s exposure to certain severe and unanticipated market events that could significantly detract from returns.

Due to this volatility control process, the percentage of the Portfolio’s assets invested in cash and short-term cash equivalents will vary and may be significant during times of severe and unanticipated market events. Substantial holdings in cash or cash equivalents could reduce the magnitude of losses incurred by the Portfolio during periods of falling markets or cause the Portfolio to miss investment opportunities during periods of rising markets.

Volatility is not a measure of investment performance. Volatility may result from rapid and dramatic price swings. Higher volatility generally indicates higher risk and is often reflected by frequent and sometimes significant movements up and down in value. The Portfolio could experience high levels of volatility in both rising and falling markets. Due to market conditions or other factors, the actual or realized volatility of the Portfolio for any particular period of time may be materially higher or lower than the target maximum level.

The Portfolio’s target maximum volatility level of 10% is not a total return performance target. The Portfolio does not expect its total return performance to be within any specified target range. It is possible for the Portfolio to maintain its volatility at or under its target maximum volatility level while having negative performance returns. Efforts to manage the Portfolio’s volatility could limit the Portfolio’s gains in rising markets, may expose the Portfolio to costs to which it would otherwise not have been exposed, and if unsuccessful may result in substantial losses.

Principal Risks of Investing in the Portfolio

As with any mutual fund, there can be no assurance that the Portfolio’s investment goal will be met or that the net return on an investment in the Portfolio will exceed what could have been obtained through other investment or savings vehicles. Shares of the Portfolio are not bank

deposits and are not guaranteed or insured by any bank, government entity or the Federal Deposit Insurance Corporation. If the value of the assets of the Portfolio goes down, you could lose money.

The value of your investment in the Portfolio may be affected by one or more of the following risks, which are described in more detail in the sections “Additional Information About the Portfolios’ Investment Strategies and Investment Risks (Other than the SA VCP Dynamic Allocation Portfolio and SA VCP Dynamic Strategy Portfolio)” and the “Glossary” under “Risk Terminology” in the Prospectus, any of which could cause the Portfolio’s return, the price of the Portfolio’s shares or the Portfolio’s yield to fluctuate. These risks include those associated with direct investments in securities and in the securities underlying the ETFs or derivatives in which the Portfolio may invest.

Active Trading Risk. The Portfolio may engage in frequent trading of securities to achieve its investment goal. Active trading may result in high portfolio turnover and correspondingly greater brokerage commissions and other transaction costs, which will be borne directly by the Portfolio and could affect its performance. During periods of increased market volatility, active trading may be more pronounced.

Call Risk. The risk that an issuer will exercise its right to pay principal on a debt obligation (such as a mortgage-backed security or convertible security) that is held by the Portfolio earlier than expected. This may happen when there is a decline in interest rates. Under these circumstances, the Portfolio may be unable to recoup all of its initial investment and will also suffer from having to reinvest in lower-yielding securities.

Convertible Securities Risk. The value of convertible securities may be affected by market interest rate fluctuations, credit risk and the value of the underlying common stock into which these securities may be converted. Issuers may have the right to buy back or “call” certain convertible securities at a time unfavorable to the Portfolio.

Counterparty Risk. Counterparty risk is the risk that a counterparty to a security, loan or derivative held by the Portfolio becomes bankrupt or otherwise fails to perform its obligations due to financial difficulties. The Portfolio may experience significant delays in obtaining any recovery in a bankruptcy or other reorganization proceeding, and there may be no recovery or limited recovery in such circumstances.

Credit Risk. The risk that an issuer will default on interest or principal payments. The Portfolio could lose money if

SunAmerica Series Trust

- 3 -

SA Schroders VCP Global Allocation Portfolio

the issuer of a debt security is unable or perceived to be unable to pay interest or to repay principal when it becomes due. Various factors could affect the issuer’s actual or perceived willingness or ability to make timely interest or principal payments, including changes in the issuer’s financial condition or in general economic conditions. Debt securities backed by an issuer’s taxing authority may be subject to legal limits on the issuer’s power to increase taxes or otherwise raise revenue, or may be dependent on legislative appropriation or government aid. Certain debt securities are backed only by revenues derived from a particular project or source, rather than by an issuer’s taxing authority, and thus may have a greater risk of default. Credit risk applies to most debt securities, but is generally not a factor for obligations backed by the “full faith and credit” of the U.S. Government.

An issuer with a lower credit rating will be more likely than a higher rated issuer to default or otherwise become unable to honor its financial obligations. Issuers with low credit ratings typically issue junk bonds. In addition to the risk of default, junk bonds may be more volatile, less liquid, more difficult to value and more susceptible to adverse economic conditions or investor perceptions than other bonds.

Foreign Currency Risk. The value of the Portfolio’s foreign investments may fluctuate due to changes in currency exchange rates. A decline in the value of foreign currencies relative to the U.S. dollar generally can be expected to depress the value of the Portfolio’s non-U.S. dollar-denominated securities.

ESG Investment Risk. The Portfolio’s adherence to its ESG criteria and application of related analyses when selecting investments may impact the Portfolio’s performance, including relative to similar funds that do not adhere to such criteria or apply such analyses. Additionally, the Portfolio’s adherence to its ESG criteria and application of related analyses in connection with identifying and selecting investments may require subjective analysis and may be more difficult if data about a particular company or market is limited, such as with respect to issuers in emerging markets countries. The Portfolio may invest in companies that do not reflect the beliefs and values of any particular investor. Socially responsible norms differ by country and region, and a company’s ESG practices or the subadviser’s assessment of such may change over time. ESG characteristics may not be the only factors considered in selecting investments and as a result, the Portfolio’s investments may not have favorable ESG characteristics or high ESG ratings.

Derivatives Risk. A derivative is any financial instrument whose value is based on, and determined by, another security, index, rate or benchmark (i.e., stock options, futures, caps, floors, etc.). To the extent a derivative contract is used to hedge another position in the Portfolio, the Portfolio will be exposed to the risks associated with hedging described below. To the extent an option, futures contract, swap, or other derivative is used to enhance return, rather than as a hedge, the Portfolio will be directly exposed to the risks of the contract. Unfavorable changes in the value of the underlying security, index, rate or benchmark may cause sudden losses. Gains or losses from the Portfolio’s use of derivatives may be substantially greater than the amount of the Portfolio’s investment. Certain derivatives have the potential for undefined loss. Derivatives are also associated with various other risks, including market risk, leverage risk, hedging risk, counterparty risk, valuation risk, regulatory risk, illiquidity risk and interest rate risk. The primary risks associated with the Portfolio’s use of derivatives are market risk, counterparty risk and hedging risk.

Emerging Markets Risk. Risks associated with investments in emerging markets may include: delays in settling portfolio securities transactions; currency and capital controls; greater sensitivity to interest rate changes; pervasive corruption and crime; exchange rate volatility; inflation, deflation or currency devaluation; violent military or political conflicts; confiscations and other government restrictions by the United States or other governments; and government instability. As a result, investments in emerging market securities tend to be more volatile than investments in developed countries.

Equity Securities Risk. This is the risk that stock prices will fall over short or extended periods of time. The Portfolio is indirectly exposed to this risk through its investments in futures contracts and other derivatives. Although the stock market has historically outperformed other asset classes over the long term, the stock market tends to move in cycles. Individual stock prices fluctuate from day-to-day and may underperform other asset classes over an extended period of time. These price movements may result from factors affecting individual companies, industries or the securities market as a whole.

ETF Risk. Most ETFs are investment companies whose shares are purchased and sold on a securities exchange. An investment in an ETF generally presents the same primary risks as an investment in a conventional fund (i.e., one that is not exchange-traded) that has the same investment objectives, strategies and policies. However, ETFs are subject to the following risks that do not apply to

SunAmerica Series Trust

- 4 -

SA Schroders VCP Global Allocation Portfolio

conventional mutual funds: (i) the market price of an ETF’s shares may trade at a premium or a discount to its net asset value; (ii) an active trading market for an ETF’s shares may not develop or be maintained; and (iii) there is no assurance that the requirements of the exchange necessary to maintain the listing of an ETF will continue to be met or remain unchanged. In addition, a passively-managed ETF may fail to accurately track the market segment or index that underlies its investment objective. To the extent that the Portfolio invests in an ETF, the Portfolio will indirectly bear its proportionate share of the management and other expenses that are charged by the ETF in addition to the expenses paid by the Portfolio.

Floating Rate Securities Risk. Floating rate securities reset whenever there is a change in a specified index rate. In most cases, these reset provisions reduce the impact of changes in market interest rates on the value of the security. However, the value of these securities may decline if their interest rates do not rise as much, or as quickly, as other interest rates. Conversely, these securities will not generally increase in value if interest rates decline. The absence of an active market for these securities could make it difficult for the Portfolio to dispose of them if the issuer defaults.

Variable and floating rate obligations normally will involve industrial development or revenue bonds which provide that the rate of interest is set as a specific percentage of a designated base rate, such as rates on Treasury Bonds or Bills or the prime rate at a major commercial bank, and that a bondholder can demand payment of the obligations on behalf of a Portfolio on short notice at par plus accrued interest, which amount may be more or less than the amount the bondholder paid for them. The maturity of floating or variable rate obligations (including participation interests therein) is deemed to be the longer of (i) the notice period required before a Portfolio is entitled to receive payment of the obligation upon demand, or (ii) the period remaining until the obligation’s next interest rate adjustment. If not redeemed by a Portfolio through the demand feature, the obligations mature on a specified date which may range up to thirty years from the date of issuance.

Foreign Investment Risk. The Portfolio’s investments in the securities of foreign issuers or issuers with significant exposure to foreign markets involve additional risk. Foreign countries in which the Portfolio invests may have markets that are less liquid, less regulated and more volatile than U.S. markets. The value of the Portfolio’s investments may decline because of factors affecting the particular issuer as well as foreign markets and issuers generally, such as unfavorable government actions, and political or financial instability and other conditions or

events (including, for example, military confrontations, war, terrorism, sanctions, disease/virus, outbreaks and epidemics). Lack of relevant data and reliable public information may also affect the value of these securities. The risks of foreign investments are heightened when investing in issuers in emerging market countries.

Foreign Sovereign Debt Risk. Foreign sovereign debt securities are subject to the risk that a governmental entity may delay or refuse to pay interest or to repay principal on its sovereign debt. If a governmental entity defaults, it may ask for more time in which to pay or for further loans.

Futures Risk. Futures are contracts involving the right to receive or the obligation to deliver assets or money depending on the performance of one or more underlying assets, instruments or a market or economic index. A futures contract is an exchange-traded legal contract to buy or sell a standard quantity and quality of a commodity, financial instrument, index, etc. at a specified future date and price. A futures contract is considered a derivative because it derives its value from the price of the underlying commodity, security or financial index. The prices of futures contracts can be volatile and futures contracts may lack liquidity. In addition, there may be imperfect or even negative correlation between the price of a futures contract and the price of the underlying commodity, security or financial index.

Hedging Risk. A hedge is an investment made in order to reduce the risk of adverse price movements in a security, by taking an offsetting position in a related security (often a derivative, such as an option, futures contract or a short sale). While hedging strategies can be very useful and inexpensive ways of reducing risk, they are sometimes ineffective due to unexpected changes in the market. Hedging also involves the risk that changes in the value of the related security will not match those of the instruments being hedged as expected, in which case any losses on the instruments being hedged may not be reduced.

Illiquidity Risk. An illiquid investment is any investment that the Portfolio reasonably expects cannot be sold or disposed of in current market conditions in seven calendar days or less without the sale or disposition significantly changing the market value of the investment. Illiquidity risk exists when particular investments are difficult to sell. Although most of the Portfolio’s investments must be liquid at the time of investment, investments may lack liquidity after purchase by the Portfolio, particularly during periods of market turmoil. When the Portfolio holds illiquid investments, its investments may be harder to value, especially in changing markets, and if the Portfolio is forced to sell these investments to meet redemption requests or for other cash needs, the Portfolio may suffer

SunAmerica Series Trust

- 5 -

SA Schroders VCP Global Allocation Portfolio

a loss. In addition, when there is illiquidity in the market for certain investments, the Portfolio, due to limitations on illiquid investments, may be unable to achieve its desired level of exposure to a certain sector. When there is little or no active trading market for specific types of securities, it can become more difficult to sell the securities at or near their perceived value. In such a market, the value of such securities and the Portfolio’s share price may fall dramatically. Portfolios that invest in non-investment grade fixed income securities and emerging market country issuers will be especially subject to the risk that during certain periods, the liquidity of particular issuers or industries, or all securities within a particular investment category, will shrink or disappear suddenly and without warning as a result of adverse economic, market or political events, or adverse investor perceptions.

Interest Rate Risk. Fixed income securities may be subject to volatility due to changes in interest rates. The value of fixed-income securities may decline when interest rates go up or increase when interest rates go down. The interest earned on fixed-income securities may decline when interest rates go down or increase when interest rates go up. Duration is a measure of interest rate risk that indicates how price-sensitive a bond is to changes in interest rates. Longer-term and lower coupon bonds tend to be more sensitive to changes in interest rates. For example, a bond with a duration of three years will decrease in value by approximately 3% if interest rates increase by 1%. Changing interest rates may have unpredictable effects on markets, may result in heightened market volatility, and could negatively impact the Portfolio’s performance. Any future changes in monetary policy made by central banks and/or their governments are likely to affect the level of interest rates.

Issuer Risk. The value of a security may decline for a number of reasons directly related to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods and services.

Large-Cap Companies Risk. Large-cap companies tend to be less volatile than companies with smaller market capitalizations. In exchange for this potentially lower risk, the Portfolio’s value may not rise as much as the value of portfolios that emphasize smaller companies. Larger, more established companies may be unable to respond quickly to new competitive challenges, such as changes in technology and consumer tastes. Larger companies also may not be able to attain the high growth rate of successful smaller companies, particularly during extended periods of economic expansion.

Market Risk. The Portfolio’s share price or the market as a whole can decline for many reasons or be adversely

affected by a number of factors, including, without limitation: weakness in the broad market, a particular industry, or specific holdings; adverse political, regulatory or economic developments in the United States or abroad; changes in investor psychology; heavy institutional selling; military confrontations, war, terrorism and other armed conflicts, disease/virus outbreaks and epidemics; recessions; taxation and international tax treaties; currency, interest rate and price fluctuations; and other conditions or events. In addition, the subadviser’s assessment of securities held in the Portfolio may prove incorrect, resulting in losses or poor performance even in a rising market.

Mortgage- and Asset-Backed Securities Risk. Mortgage- and asset-backed securities represent interests in “pools” of mortgages or other assets, including consumer loans or receivables held in trust. Asset-backed securities issued by trusts and special purpose corporations are backed by a pool of assets, such as credit card or automobile loan receivables representing the obligations of a number of different parties. Mortgage-backed securities directly or indirectly provide funds for mortgage loans made to residential home buyers. These include securities that represent interests in pools of mortgage loans made by lenders such as commercial banks, savings and loan institutions, mortgage bankers and others. They include mortgage pass-through securities, collateralized mortgage obligations (“CMOs”), commercial mortgage-backed securities, mortgage dollar rolls, CMO residuals, stripped mortgage-backed securities, non-agency residential mortgage-backed securities and other securities that directly or indirectly represent a participation in, or are secured by and payable from, mortgage loans or real property. The characteristics of these mortgage-backed and asset-backed securities differ from traditional fixed-income securities. Mortgage-backed securities are subject to “prepayment risk” and “extension risk.” Prepayment risk is the risk that, when interest rates fall, certain types of obligations will be paid off by the obligor more quickly than originally anticipated and the Portfolio may have to invest the proceeds in securities with lower yields. Extension risk is the risk that, when interest rates rise, certain obligations will be paid off by the obligor more slowly than anticipated, causing the value of these securities to fall. Small movements in interest rates (both increases and decreases) may quickly and significantly reduce the value of certain mortgage-backed securities. These securities also are subject to risk of default on the underlying mortgage, particularly during periods of economic downturn.

Preferred Stock Risk. Preferred stockholders’ liquidation rights are subordinate to the company’s debt holders and

SunAmerica Series Trust

- 6 -

SA Schroders VCP Global Allocation Portfolio

creditors. If interest rates rise, the fixed dividend on preferred stocks may be less attractive and the price of preferred stocks may decline. Deferred dividend payments by an issuer of preferred stock could have adverse tax consequences for the Portfolio and may cause the preferred stock to lose substantial value.

Prepayment Risk. As a general rule, prepayments increase during a period of falling interest rates and decrease during a period of rising interest rates. This can reduce the returns of the Portfolio because the Portfolio will have to reinvest that money at the lower prevailing interest rates. In periods of increasing interest rates, the occurrence of prepayments generally declines, with the effect that the securities subject to prepayment risk held by the Portfolio may exhibit price characteristics of longer-term debt securities.

Regulatory Risk. Derivative contracts, including, without limitation, futures, swaps and currency forwards, are subject to regulation under the Dodd-Frank Wall Street Reform and Consumer Protection Act (“Dodd-Frank Act”) in the United States and under comparable regimes in Europe, Asia and other non-U.S. jurisdictions. Under the Dodd-Frank Act, with respect to uncleared swaps, swap dealers are required to collect variation margin from the Portfolio and may be required by applicable regulations to collect initial margin from the Portfolio. Both initial and variation margin may be comprised of cash and/or securities, subject to applicable regulatory haircuts. Shares of investment companies (other than money market funds) may not be posted as collateral under these regulations. In addition, regulations adopted by global prudential regulators that are now in effect require certain bank-regulated counterparties and certain of their affiliates to include in certain financial contracts, including many derivatives contracts, terms that delay or restrict the rights of counterparties, such as the Portfolio, to terminate such contracts, foreclose upon collateral, exercise other default rights or restrict transfers of credit support in the event that the counterparty and/or its affiliates are subject to certain types of resolution or insolvency proceedings. The implementation of these requirements with respect to derivatives, along with additional regulations under the Dodd-Frank Act regarding clearing and mandatory trading and trade reporting of derivatives, generally have increased the costs of trading in these instruments and, as a result, may affect returns to investors in the Portfolio.

Risk of Conflict with Insurance Company Interests. Managing the Portfolio’s volatility may reduce the risks assumed by the insurance company that sponsors your Variable Contract. This facilitates the insurance company’s ability to provide guaranteed benefits. These

guarantees are optional and may not be associated with your Variable Contract. While the interests of the Portfolio’s shareholders and the affiliated insurance companies providing these guaranteed benefits are generally aligned, the affiliated insurance companies (and the adviser by virtue of its affiliation with the insurance companies) may face potential conflicts of interest. In particular, certain aspects of the Portfolio’s management have the effect of mitigating the financial risks to which the affiliated insurance companies are subjected by providing those guaranteed benefits. In addition, the Portfolio’s performance may be lower than similar portfolios that do not seek to manage their volatility.

Bonds Risk. The value of your investment in the Portfolio may go up or down in response to changes in interest rates or defaults (or even the potential for future defaults) by bond issuers. Fixed income securities may be subject to volatility due to changes in interest rates.

Securities Selection Risk. A strategy used by the Portfolio, or individual securities selected by the subadviser, may fail to produce the intended return.

Small- and Mid-Cap Companies Risk. Companies with smaller market capitalizations (particularly under $1 billion depending on the market) tend to be at early stages of development with limited product lines, operating histories, market access for products, financial resources, access to new capital, or depth in management. It may be difficult to obtain reliable information and financial data about these companies. Consequently, the securities of smaller companies may not be as readily marketable and may be subject to more abrupt or erratic market movements than companies with larger capitalizations. Securities of medium-sized companies are also subject to these risks to a lesser extent.

U.S. Government Obligations Risk. U.S. Treasury obligations are backed by the “full faith and credit” of the U.S. Government and generally have negligible credit risk. Securities issued or guaranteed by federal agencies or authorities and U.S. Government sponsored instrumentalities or enterprises may or may not be backed by the full faith and credit of the U.S. Government. For example, securities issued by the Federal Home Loan Mortgage Corporation, the Federal National Mortgage Association and the Federal Home Loan Banks are neither insured nor guaranteed by the U.S. Government; these securities may be supported only by the ability to borrow from the U.S. Treasury or by the credit of the issuing agency, authority, instrumentality or enterprise and, as a result, are subject to greater credit risk than securities issued or guaranteed by the U.S. Treasury.

SunAmerica Series Trust

- 7 -

SA Schroders VCP Global Allocation Portfolio

Volatility Management Risk. The risk that the subadviser’s strategy for managing portfolio volatility may not produce the desired result or that the subadviser is unable to trade certain derivatives effectively or in a timely manner. In addition, the minimum and maximum equity exposure limits may prevent the subadviser from fully managing portfolio volatility in certain market environments. There can be no guarantee that the Portfolio’s volatility will be below its target maximum level. Additionally, the volatility control process will not ensure that the Portfolio will deliver competitive returns. The use of derivatives in connection with the Portfolio’s managed volatility strategy may expose the Portfolio to losses (some of which may be sudden) that it would not have otherwise been exposed to if it had only invested directly in equity and/or fixed income securities. Efforts to manage the Portfolio’s volatility could limit the Portfolio’s gains in rising markets and may expose the Portfolio to costs to which it would otherwise not have been exposed. The Portfolio’s managed volatility strategy may result in the Portfolio outperforming the general securities market during periods of flat or negative market performance, and underperforming the general securities market during periods of positive market performance. The Portfolio’s managed volatility strategy also exposes shareholders to the risks of investing in derivative contracts. The subadviser uses a proprietary system to help it estimate the Portfolio’s expected volatility. The proprietary system used by the subadviser may perform differently than expected and may negatively affect performance and the ability of the Portfolio to maintain its volatility at or below its target maximum volatility level for various reasons, including errors in using or building the system, technical issues implementing the system, data issues and various nonquantitative factors (e.g., market or trading system dysfunctions, and investor fear or over-reaction).

Performance Information

The following bar chart illustrates the risks of investing in the Portfolio by showing changes in the Portfolio’s performance from calendar year to calendar year and the table compares the Portfolio’s average annual returns to those of the MSCI World Index (net) (a broad-based securities market index), and a blended index. The blended index consists of 60% MSCI World Index (net) and 40% Bloomberg U.S. Corporate Investment Grade Index (the “Blended Index”). The Blended Index is

relevant to the Portfolio because it has characteristics similar to the Portfolio’s investment strategies. Fees and expenses incurred at the contract level are not reflected in the bar chart or table. If these amounts were reflected, returns would be less than those shown. Of course, past performance is not necessarily an indication of how the Portfolio will perform in the future.

(Class 3 Shares)

During the period shown in the bar chart:

Highest Quarterly Return:	December 31, 2023	10.42%
Lowest Quarterly Return:	June 30, 2022	-12.32%
Year to Date Most Recent Quarter:	March 31, 2025	-0.55%

Average Annual Total Returns (For the periods ended December 31, 2024)

	1 Year	5 Years	Since Inception	Inception Date
Class 1 Shares	11.72%	3.61%	4.95%	9/26/2016
Class 3 Shares	11.56%	3.38%	5.30%	1/25/2016
MSCI World Index (net)	18.67%	11.17%	12.28%
Blended Index	11.83%	6.90%	8.57%

Index since inception returns reflect the inception date of Class 3 Shares.

Investment Adviser

The Portfolio’s investment adviser is SunAmerica.

SunAmerica Series Trust

- 8 -

SA Schroders VCP Global Allocation Portfolio

The Portfolio is subadvised by Schroder Investment Management North America Inc., along with its affiliate, Schroder Investment Management North America Ltd.

Portfolio Managers

Name and Title	Portfolio Manager of the Portfolio Since
Johanna Kyrklund, CFA Group CIO	2016
Ugo Montrucchio, CFA, CAIA Head of Multi-Asset Investments, Europe	2024
Marcus Durell Head of FX, Index and Equity Derivative Investments	2024
Mallory Timmermans Head of Risk Managed Investments	2024

Purchases and Sales of Portfolio Shares

Shares of the Portfolios may only be purchased or redeemed through Variable Contracts offered by the separate accounts of participating life insurance companies and by other portfolios of the Trust and Seasons Series Trust. Shares of a Portfolio may be purchased and redeemed each day the New York Stock Exchange is open, at the Portfolio’s net asset value determined after receipt of a request in good order.

The Portfolios do not have any initial or subsequent investment minimums. However, your insurance company may impose investment or account minimums. Please consult the prospectus (or other offering document) for your Variable Contract which may contain additional

information about purchases and redemptions of Portfolio shares.

Tax Information

The Portfolios will not be subject to U.S. federal income tax so long as they qualify as regulated investment companies and distribute their income and gains each year to their shareholders. However, contractholders may be subject to U.S. federal income tax (and a U.S. federal Medicare tax of 3.8% that applies to net investment income, including taxable annuity payments, if applicable) upon withdrawal from a Variable Contract. Contractholders should consult the prospectus (or other offering document) for the Variable Contract for additional information regarding taxation.

Payments to Broker-Dealers and
Other Financial Intermediaries

The Portfolios are not sold directly to the general public but instead are offered as an underlying investment option for Variable Contracts and to other portfolios of the Trust and Seasons Series Trust. A Portfolio and its related companies may make payments to the sponsoring insurance company (or its affiliates) for distribution and/or other services. These payments may create a conflict of interest as they may be a factor that the insurance company considers in including a Portfolio as an underlying investment option in the Variable Contract. The prospectus (or other offering document) for your Variable Contract may contain additional information about these payments.

SunAmerica Series Trust

- 9 -