# EDGAR Filing Document

**Accession Number:** 0000892538
**File Stem:** 0001193125-26-194886
**Filing Date:** 2026-4
**Character Count:** 35795
**Document Hash:** 84b86d09dd837234f18efffebf08744c
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-194886.hdr.sgml**: 20260430

**ACCESSION NUMBER**: 0001193125-26-194886

**CONFORMED SUBMISSION TYPE**: 497K

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20260430

**DATE AS OF CHANGE**: 20260430

**EFFECTIVENESS DATE**: 20260430

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** SUNAMERICA SERIES TRUST
- **CENTRAL INDEX KEY:** 0000892538

**ORGANIZATION NAME:**
- **EIN:** 137002445
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 0131
- **LEGAL ENTITY IDENTIFIER:** 549300E40BQMHI2LOX26

**FILING VALUES:**
- **FORM TYPE:** 497K
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 033-52742
- **FILM NUMBER:** 26920885

**BUSINESS ADDRESS:**
- **STREET 1:** 5300 MEMORIAL DRIVE
- **STREET 2:** SUITE 1150
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77007
- **BUSINESS PHONE:** 551-235-3560

**MAIL ADDRESS:**
- **STREET 1:** ONE WORLD TRADE CENTER, SUITE J
- **STREET 2:** 49TH FL
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10007

## Series and Classes Contracts Data

### SA VCP Index Allocation Portfolio (Series ID: S000059205)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000193971 | Class 1      |  |
| C000193972 | Class 3      |  |

**Summary Prospectus**

**May 1, 2026**

**SunAmerica Series Trust**

**SA VCP Index Allocation Portfolio**

**(Class 1 and Class 3 Shares)**

SunAmerica Series Trust's [Statutory Prospectus and Statement of Additional Information](https://www.sec.gov/ix?doc=/Archives/edgar/data/0000892538/000119312526182445/d67063d485bpos.htm), each dated May 1, 2026, as amended and supplemented from time to time, and the [most recent shareholder reports](https://www.sec.gov/ix?doc=/Archives/edgar/data/0000892538/000119312526150593/8de95b0a53ad87c.htm) are incorporated into and made part of this Summary Prospectus by reference. The Portfolio is offered only to the separate accounts of certain 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://venerable.onlineprospectus.net/funds/sast_sst/. 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 has not approved or disapproved these securities, nor has it determined that this Summary Prospectus is accurate or complete. It is a criminal offense to state otherwise.

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**Investment Goal**

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The Portfolio's investment goals are to seek capital appreciation and, secondarily, income while managing portfolio volatility.

**Fees and Expenses of the Portfolio**

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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. As an investor in the Portfolio, you pay the expenses of the Portfolio and indirectly pay a proportionate share of the expenses of the Underlying Portfolios (as defined herein) in which the Portfolio invests.

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

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| | | | | |
|:---|:---|:---|:---|:---|
|  |  | **Class 1** |  | **Class 3** |
| Management Fees |  | 0.20<br> %<br>|  | 0.20<br> %<br>|
| Service (12b-1) Fees |  |  |  | 0.25<br> %<br>|
| Other Expenses |  | 0.05<br> %<br>|  | 0.05<br> %<br>|
| &nbsp;&nbsp;&nbsp; Interest Expenses | 0.02<br> %<br>|  | 0.02<br> %<br>|  |
| &nbsp;&nbsp;&nbsp; Miscellaneous Other Expenses | 0.03<br> %<br>|  | 0.03<br> %<br>|  |
| Acquired Fund Fees and Expenses<sup>1</sup> |  | 0.28<br> %<br>|  | 0.28<br> %<br>|
| &nbsp;&nbsp;&nbsp; Total Annual Portfolio Operating <br> Expenses<sup>1</sup><br>|  | 0.53<br> %<br>|  | 0.78<br> %<br>|

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<sup>1</sup>

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.

***<u>Expense Example</u>***

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 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 separate account 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:

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| | | | | |
|:---|:---|:---|:---|:---|
|  | **1 Year** | **3 Years** | **5 Years** | **10 Years** |
| Class 1 | $54 | &nbsp;&nbsp; $170 | &nbsp;&nbsp; $296 | &nbsp;&nbsp; $665 |
| Class 3 | 80 | &nbsp;&nbsp; 249 | &nbsp;&nbsp; 433 | &nbsp;&nbsp; 966 |

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***<u>Portfolio Turnover</u>*** 

The portion of the Portfolio that operates as a fund-of-funds does not pay transaction costs when it buys and sells shares of Underlying Portfolios (or "turns over" its portfolio). An Underlying Portfolio pays transaction costs, such as commissions, when it turns over its portfolio, and 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 performance of both the Underlying Portfolios

SunAmerica Series Trust

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**SA VCP Index Allocation Portfolio**

and the Portfolio. The Portfolio does, however, pay transaction costs when it buys and sells the financial instruments held in the Overlay Component of the Portfolio (defined below).

During the most recent fiscal year, the Portfolio's portfolio turnover rate was 9% of the average value of its portfolio.

**Principal Investment Strategies of the Portfolio**

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The Portfolio seeks to achieve its goals by investing under normal conditions approximately 80% of its assets in a combination of other mutual funds (the "Underlying Portfolios") (the "Fund-of-Funds Component") and 20% of its assets in a combination of equity index and fixed income futures, currency forwards and equity index put options selected through the use of a "VCP" (Volatility Control Portfolio) risk management process designed to manage the volatility level of the Portfolio's annual returns (the "Overlay Component"). SunAmerica, the Portfolio's adviser, is responsible for managing the Fund-of-Funds Component. T. Rowe Price Associates, Inc. ("T. Rowe Price"), the Portfolio's subadviser, is responsible for managing the Overlay Component.

Under normal circumstances, the Fund-of-Funds Component will allocate approximately 70% of its assets (with a range of 60% to 80%) to Underlying Portfolios investing primarily in equity securities (the "Underlying Equity Portfolios") and 30% of its assets (with a range of 20% to 40%) to Underlying Portfolios investing primarily in fixed income securities ("Underlying Fixed Income Portfolios"). The Underlying Portfolios will primarily include other funds in the Trust but may also include other funds advised by SunAmerica. The Underlying Equity Portfolios include, among others, funds that invest in domestic and international equity securities of small, medium and/or large capitalization companies and the Underlying Fixed Income Portfolios include, among others, funds that invest in domestic government and corporate bonds.

The Underlying Portfolios will be limited to index funds, which are passively managed to track the performance of designated indices. The Fund-of-Funds Component may invest a significant portion of its assets in any single Underlying Portfolio.

The following chart sets forth the Fund-of-Funds Component's target allocations set by SunAmerica on January 31, 2026 to the Underlying Equity Portfolios and Underlying Fixed Income Portfolios. The Fund-of-Funds

Component's actual allocations may vary from these projections and will fluctuate from time to time due to, among other things, market conditions and changes made by SunAmerica to the target allocations.

---

| | |
|:---|:---|
| **Underlying Portfolio** | **% of Total**<br> **Portfolio**<br>|
| **Equity** | 72.00% |
| SA Large Cap Index Portfolio | 46.90% |
| SA Mid Cap Index Portfolio | 7.60% |
| SA Small Cap Index Portfolio | 5.00% |
| SA International Index Portfolio | 12.50% |
| **Fixed Income** | 28.00% |
| &nbsp;&nbsp;&nbsp; SA Fixed Income Intermediate Index <br> Portfolio<br>| 14.00% |
| SA Fixed Income Index Portfolio | 14.00% |

---

The Underlying Portfolio selection is made based on the Fund-of-Funds Component's 70%/30% asset allocation strategy discussed above. SunAmerica may adjust the Fund-of-Funds Component's allocation to the Underlying Portfolios from time to time as it deems necessary, including based on market conditions or other factors. SunAmerica intends to rebalance the Fund-of-Funds Component on an ongoing basis using cash flows; however, it reserves the right to rebalance the Fund-of-Funds Component through exchanges at any time.

The Overlay Component will utilize a systematic volatility control process to manage the risk of the Portfolio. The Portfolio targets a volatility level of 11% within a range of 10% to 14%. 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. T. Rowe Price expects to use a variety of equity index and fixed income futures and currency forwards as the principal tools to implement this volatility management strategy. The Portfolio's overall net equity exposure may be reduced to 20% or increased to 100% as a result of the volatility management strategy. In addition, T. Rowe Price 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.

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

SunAmerica Series Trust

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**SA VCP Index Allocation Portfolio**

actual or realized volatility of the Portfolio for any particular period of time may be materially higher or lower than the target level.

The Portfolio's target volatility level of 11% 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 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.

The Portfolio may also invest its assets in money market securities, which may include, but are not limited to, U.S. government securities, U.S. government agency securities, short-term fixed income securities, bank deposits, repurchase agreements, money market mutual fund shares, and cash and cash equivalents. The Portfolio's money market securities holdings may serve as collateral for the Portfolio's derivative positions, earn income for the Portfolio and be used for cash management purposes.

The subadviser may engage in frequent and active trading of portfolio securities.

**Principal Risks of Investing in the Portfolio**

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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 following is a summary of the principal risks of investing in the Portfolio.

**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.

**Asset Allocation Risk.** The Portfolio's risks will directly correspond to the risks of the Underlying Portfolios in

which it invests. The Portfolio is subject to the risk that the selection of the Underlying Portfolios and the allocation and reallocation of the Portfolio's assets among the various asset classes and market sectors may not produce the desired result.

**Equity Securities Risk.** The Portfolio invests principally in Underlying Portfolios that invest in equity securities and is therefore subject to the risk that stock prices will fall and may underperform other asset classes. Individual stock prices fluctuate from day-to-day and may decline significantly.

**Large-Cap Companies Risk.** The Portfolio invests in Underlying Portfolios that invest substantially in large-cap companies. 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.

**Small- and Medium-Sized Companies Risk.** The Portfolio invests in Underlying Portfolios that may invest in securities of small- and medium-capitalization companies. Securities of small- and medium-sized companies are usually more volatile and entail greater risks than securities of large companies.

**Foreign Investment Risk.** The Portfolio's investments in Underlying Portfolios that invest in the securities of foreign issuers or issuers with significant exposure to foreign markets involve additional risk. Foreign countries in which an Underlying Portfolio may invest may have markets that are less liquid, less regulated and more volatile than U.S. markets. The value of the Underlying 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.

**Foreign Currency Risk.** The value of an Underlying 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

SunAmerica Series Trust

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**SA VCP Index Allocation Portfolio**

generally can be expected to depress the value of an Underlying Portfolio's non-U.S. dollar-denominated securities.

**Bonds Risk.** The Portfolio invests in Underlying Portfolios that invest principally in bonds, which may cause the value of your investment in the Portfolio to 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.

**Credit Risk.** Credit risk applies to most fixed income securities, but is generally not a factor for obligations backed by the "full faith and credit" of the U.S. Government. An Underlying Portfolio could lose money if the issuer of a fixed income security is unable or perceived to be unable to pay interest or to repay principal when it becomes due.

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.

**Interest Rate Risk.** The Portfolio invests in Underlying Portfolios that invest in fixed income securities. Fixed income securities may be subject to volatility due to changes in interest rates. 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. Any future changes in monetary policy made by central banks and/or their governments are likely to affect the level of interest rates.

**Management Risk.** The Portfolio is subject to management risk because it is an actively managed investment portfolio. The Portfolio's portfolio managers apply investment techniques and risk analyses in making investment decisions, but there can be no guarantee that these decisions or individual securities selected by the portfolio managers will produce the desired results.

**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.

**Derivatives Risk.** A derivative is any financial instrument whose value is based on, and determined by, another

security, index, rate, currency 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 fluctuations risk. The primary risks associated with the Portfolio's use of derivatives are market risk, counterparty risk and hedging risk.

**Hedging Risk.** 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. For gross currency hedges, there is an additional risk, to the extent that these transactions create exposure to currencies in which the Portfolio's securities are not denominated.

**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.

**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

SunAmerica Series Trust

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**SA VCP Index Allocation Portfolio**

imperfect or even negative correlation between the price of a futures contract and the price of the underlying commodity, security or financial index.

**Forward Currency Contracts Risk.** A forward foreign currency contract or "currency forward" is an agreement between parties to exchange a specified amount of currency at a specified future time at a specified rate. Currency forwards are generally used to protect against uncertainty in the level of future exchange rates. Currency forwards do not eliminate fluctuations in the prices of the underlying securities a Portfolio owns or intends to acquire, but they do fix a rate of exchange in advance. Currency forwards limit the risk of loss due to a decline in the value of the hedged currencies, but at the same time they limit any potential gain that might result should the value of the currencies increase. The use of forward contracts involves the risk of mismatching the Portfolio's objective under a forward contract with the value of securities denominated in a particular currency. Such transactions reduce or preclude the opportunity for gain if the value of the currency should move in the direction opposite to the position taken. There is an additional risk to the effect that currency contracts create exposure to currencies in which the Portfolio's securities are not denominated. Unanticipated changes in currency prices may result in poorer overall performance for the Portfolio than if it had not entered into such contracts.

**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 social, political, regulatory or economic developments in the United States or abroad; changes in investor psychology; technological disruptions; heavy institutional selling; military confrontations, war, terrorism and other armed conflicts, trade wars and sanctions, disease/virus outbreaks and epidemics; recessions; taxation and international tax treaties; currency, interest rate and price fluctuations; and other conditions or events. In addition, an Underlying Portfolio's adviser's or subadviser's assessment of securities held in the Underlying Portfolio may prove incorrect, resulting in losses or poor performance even in a rising market.

**Indexing Risk.** The Underlying Portfolios in which the Portfolio invests are managed to track the performance of an index. An Underlying Portfolio will not sell securities in its portfolio or buy different securities over the course of a year other than in conjunction with changes in its target index, even if there are adverse developments concerning

a particular security, company or industry. As a result, the Portfolio may suffer losses that might not be experienced with an investment in an actively-managed mutual fund.

**Fund-of-Funds Risk.** The costs of investing in the Portfolio, as a fund-of-funds, may be higher than the costs of investing in a mutual fund that invests most or all of its assets directly in individual securities. An Underlying Portfolio may change its investment objective or policies without the Portfolio's approval, which could force the Portfolio to withdraw its investment from such Underlying Portfolio at a time that is unfavorable to the Portfolio. In addition, one Underlying Portfolio may buy the same securities that another Underlying Portfolio sells. Therefore, the Portfolio would indirectly bear the costs of these trades without accomplishing any investment purpose.

**Underlying Portfolios Risk.** The risks of the Portfolio owning Underlying Portfolios generally reflect the risks of owning the underlying securities held by the Underlying Portfolios. Disruptions in the markets for the securities held by the Underlying Portfolios could result in losses on the Portfolio's investment in such securities. The Underlying Portfolios also have fees that increase their costs versus owning the underlying securities directly. For example, the Portfolio indirectly pays a portion of the expenses (including management fees and operating expense) incurred by the Underlying Portfolios.

**Affiliated Portfolio Risk.** In managing the Portfolio, SunAmerica will have the authority to select and substitute the Underlying Portfolios. SunAmerica may be subject to potential conflicts of interest in allocating the Portfolio's assets among the various Underlying Portfolios because the fees payable to it by some of the Underlying Portfolios are higher than the fees payable by other Underlying Portfolios and because SunAmerica also is responsible for managing and administering the Underlying Portfolios.

**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 insurance companies providing these guaranteed benefits are generally aligned, 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 insurance companies are subjected by

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**SA VCP Index Allocation Portfolio**

providing those guaranteed benefits. In addition, the Portfolio's performance may be lower than similar portfolios that do not seek to manage their volatility.

**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 will maintain its target volatility 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 volatility level for various reasons, including errors in using or building the system, technical issues implementing the system, data issues and various non-quantitative factors (*e.g.*, market or trading system dysfunctions, and investor fear or over-reaction).

**Money Market Securities Risk.** This is both a direct and indirect risk of investing in the Portfolio. An investment in the Portfolio is subject to the risk that the value of its investments in high-quality short-term obligations ("money market securities") may be subject to changes in interest rates, changes in the rating of any money market security and in the ability of an issuer to make payments of interest and principal.

**Performance Information**

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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 S&P 500<sup>®</sup> Index (a broad-based securities market index) and a blended index. The blended index consists of 45% S&P 500<sup>®</sup> Index, 7.5% S&P MidCap 400 Index, 5% Russell 2000<sup>®</sup> Index, 12.5% MSCI EAFE Index (net), 15% Bloomberg U.S. Government/Credit Index and 15% Bloomberg Intermediate U.S. Government/Credit 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)**

![](g58667vcpindexalloc_sast1.jpg)

During the period shown in the bar chart:

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| | | |
|:---|:---|:---|
| Highest Quarterly <br> Return:<br>| December 31, 2023 | 10.47% |
| Lowest Quarterly <br> Return:<br>| March 31, 2020 | -12.91% |
| Year to Date Most <br> Recent Quarter:<br>| March 31, 2026 | -2.16% |

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**Average Annual Total Returns** (For the periods ended December 31, 2025)

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| | | | | |
|:---|:---|:---|:---|:---|
|  | 1<br> Year<br>| 5<br> Years<br>| Since<br> Inception<br>| Inception<br> Date<br>|
| Class 1 Shares | 12.08% | &nbsp;&nbsp; 7.56% | &nbsp;&nbsp; 7.79% | 10/6/2017 |
| Class 3 Shares | 11.82% | &nbsp;&nbsp; 7.29% | &nbsp;&nbsp; 7.52% | 10/6/2017 |
| &nbsp;&nbsp;&nbsp;&nbsp; S&P 500® Index (reflects <br> no deduction for fees, <br> expenses or taxes)<br>| 17.88% | 14.42% | 14.60% |  |
| &nbsp;&nbsp;&nbsp;&nbsp; SA VCP Idx Alloc Blended <br> Index<br>| 15.19% | &nbsp;&nbsp; 8.76% | &nbsp;&nbsp; 9.42% |  |

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SunAmerica Series Trust

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**SA VCP Index Allocation Portfolio**

**Investment Adviser**

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The Portfolio's investment adviser is SunAmerica. SunAmerica also manages the Fund-of-Funds Component of the Portfolio. The Overlay Component of the Portfolio is subadvised by T. Rowe Price.

***<u>Portfolio Managers</u>*** 

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| | |
|:---|:---|
| **Name and Title** | **Portfolio**<br> **Manager**<br> **of the Fund-**<br> **of-Funds**<br> **Component**<br> **of the** <br> **Portfolio Since**<br>|
| *<u>SunAmerica</u>* |  |
| &nbsp;&nbsp;&nbsp; Andrew Sheridan<br> Lead Portfolio Manager<br>| 2021 |
| &nbsp;&nbsp;&nbsp; Manisha Singh, CFA<br> Co-Portfolio Manager<br>| 2017 |
| &nbsp;&nbsp;&nbsp; Robert Wu, CFA<br> Co-Portfolio Manager<br>| 2021 |

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

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| | |
|:---|:---|
| **Name and Title** | **Portfolio**<br> **Managers**<br> **of the Overlay**<br> **Component**<br> **of the** <br> **Portfolio Since**<br>|
| *<u>T. Rowe Price</u>* |  |
| &nbsp;&nbsp;&nbsp; Charles M. Shriver, CFA<br> Vice President<br>| 2017 |
| &nbsp;&nbsp;&nbsp; Sean McWilliams<br> Vice President<br>| 2019 |
| &nbsp;&nbsp;&nbsp; Toby M. Thompson, CFA, CAIA<br> Vice President<br>| 2017 |

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**Purchases and Sales of Portfolio Shares**

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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**

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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** <br> **Other Financial Intermediaries**

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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

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CSP-86704C_341_358.9 (5/26)

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