# EDGAR Filing Document

**Accession Number:** 0000892538
**File Stem:** 0001193125-26-194862
**Filing Date:** 2026-4
**Character Count:** 19352
**Document Hash:** 7056bd76671fec16458ebcd6799c3ac5
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-194862.hdr.sgml**: 20260430

**ACCESSION NUMBER**: 0001193125-26-194862

**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:** 26920860

**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 Franklin BW U.S. Large Cap Value Portfolio (Series ID: S000008079)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000021963 | Class 1      |  |
| C000021964 | Class 2      |  |
| C000021965 | Class 3      |  |

**Summary Prospectus**

**May 1, 2026**

**SunAmerica Series Trust**

**SA Franklin BW U.S. Large Cap Value Portfolio**

**(Class 1, Class 2 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 goal is growth of capital.

**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.

**<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 2** | **Class 3** |
| Management Fees | 0.72% | &nbsp;&nbsp; 0.72% | &nbsp;&nbsp; 0.72% |
| Service (12b-1) Fees |  | &nbsp;&nbsp; 0.15% | &nbsp;&nbsp; 0.25% |
| Other Expenses | 0.04% | &nbsp;&nbsp; 0.04% | &nbsp;&nbsp; 0.04% |
| &nbsp;&nbsp;&nbsp; Total Annual Portfolio <br> Operating Expenses <br> Before Fee Waivers and/<br> or Reimbursements<br>| 0.76% | &nbsp;&nbsp; 0.91% | &nbsp;&nbsp; 1.01% |
| &nbsp;&nbsp;&nbsp; Fee Waivers and/or <br> Expense <br> Reimbursements<sup>1</sup><br>| 0.06% | &nbsp;&nbsp; 0.06% | &nbsp;&nbsp; 0.06% |
| &nbsp;&nbsp;&nbsp; Total Annual Portfolio <br> Operating Expenses <br> After Fee Waivers and/<br> or Expense <br> Reimbursements<sup>1</sup><br>| 0.70% | &nbsp;&nbsp; 0.85% | &nbsp;&nbsp; 0.95% |

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<sup>1</sup>

Pursuant to a Master Advisory Fee Waiver Agreement, effective through April 30, 2027, SunAmerica Asset Management, LLC

("SunAmerica") is contractually obligated to waive its advisory fee with respect to the Portfolio so that the advisory fee payable by the Portfolio to SunAmerica equals 0.67% of average daily net assets. This agreement may be modified or discontinued prior to April 30, 2027 only with the approval of the Board of Trustees of SunAmerica Series Trust (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.

***<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 | $72 | &nbsp;&nbsp; $237 | &nbsp;&nbsp; $416 | &nbsp;&nbsp; $937 |
| Class 2 | 87 | &nbsp;&nbsp; 284 | &nbsp;&nbsp; 498 | &nbsp;&nbsp; 1114 |
| Class 3 | 97 | &nbsp;&nbsp; 316 | &nbsp;&nbsp; 552 | &nbsp;&nbsp; 1231 |

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

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

SunAmerica Series Trust

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**SA Franklin BW U.S. Large Cap Value Portfolio**

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 71% of the average value of its portfolio.

**Principal Investment Strategies of the Portfolio**

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The Portfolio attempts to achieve its goal by, under normal circumstances, investing at least 80% of its net assets in equity securities of large capitalization companies. Large capitalization companies are those with market capitalizations similar to companies in the Russell 1000<sup>®</sup> Value Index (the "Index"). As of February 28, 2026, the median market capitalization of a company in the Index was approximately $15.978 billion and the largest market capitalization of the companies in the Index was approximately $3.78 trillion. The size of the companies in the Index changes with market conditions and the composition of the Index. The Portfolio may invest in foreign securities, including emerging market securities, either directly or through depositary receipts. The Portfolio holds equity securities of approximately 150-250 companies under normal market conditions.

The subadviser selects securities for the Portfolio that it believes are undervalued or out of favor based primarily on price-to-earnings ratios, price-to-book ratios, price momentum, and share change and quality. The subadviser's investment process begins by screening for low valuation companies based on their price-to-earnings or price-to-book ratios, and using quantitative analysis to eliminate equity securities that have poor price momentum and high relative share issuance. The subadviser then performs a fundamental analysis on the remaining equity securities to identify and eliminate those securities that it believes will have difficulty outperforming the Index. The subadviser may consider other factors in its selection process.

The subadviser typically sells a security of a company held by the Portfolio when it believes the company is no longer a large capitalization value company, if the company's fundamentals deteriorate, when an investment opportunity arises that the subadviser believes is more compelling, or to realize gains or limit potential losses.

**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.

**Equity Securities Risk.** The Portfolio invests principally 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.

**Value Investing Risk.** The subadviser's judgment that a particular security is undervalued in relation to the company's fundamental economic value may prove incorrect.

**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.

**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.

**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

SunAmerica Series Trust

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**SA Franklin BW U.S. Large Cap Value Portfolio**

result, investments in emerging market securities tend to be more volatile than investments in developed countries.

**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.

**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 the individual securities selected by the portfolio managers will produce the desired results.

**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, the subadviser's assessment of securities held in the Portfolio may prove incorrect, resulting in losses or poor performance even in a rising market. <br>

**Affiliated Fund Rebalancing Risk.** The Portfolio may be an investment option for other mutual funds for which SunAmerica serves as investment adviser that are managed as "funds of funds." From time to time, the Portfolio may experience relatively large redemptions or investments due to the rebalancing of a fund of funds. In the event of such redemptions or investments, the Portfolio could be required to sell securities or to invest cash at a time when it is not advantageous to do so.

**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.

**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 the Russell 1000<sup>®</sup> Value Index, which 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.

Brandywine Global Investment Management, LLC ("Brandywine") assumed subadvisory duties of the Portfolio on September 8, 2015. Prior to September 8, 2015, Davis Selected Advisers, L.P. d/b/a Davis Advisors subadvised the Portfolio.

**(Class 1 Shares)**

![](g115055legglargecapv_sast1.jpg)

During the period shown in the bar chart:

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| | | |
|:---|:---|:---|
| Highest Quarterly <br> Return:<br>| December 31, 2022 | 16.20% |
| Lowest Quarterly <br> Return:<br>| March 31, 2020 | -27.39% |
| Year to Date Most <br> Recent Quarter:<br>| March 31, 2026 | 3.16% |

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SunAmerica Series Trust

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**SA Franklin BW U.S. Large Cap Value Portfolio**

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

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| | | | |
|:---|:---|:---|:---|
|  | 1<br> Year<br>| 5<br> Years<br>| 10<br> Years<br>|
| Class 1 Shares | 17.13% | 13.86% | 11.60% |
| Class 2 Shares | 16.98% | 13.69% | 11.43% |
| Class 3 Shares | 16.83% | 13.57% | 11.32% |
| &nbsp;&nbsp;&nbsp;&nbsp; S&P 500® Index (reflects no deduction <br> for fees, expenses or taxes)<br>| 17.88% | 14.42% | 14.82% |
| &nbsp;&nbsp;&nbsp;&nbsp; Russell 1000® Value Index (reflects no <br> deduction for fees, expenses or <br> taxes)<br>| 15.91% | 11.33% | 10.53% |

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**Investment Adviser**

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The Portfolio's investment adviser is SunAmerica.

The Portfolio is subadvised by Brandywine.

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

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| | |
|:---|:---|
| **Name and Title** | **Portfolio**<br> **Manager of the**<br> **Portfolio Since**<br>|
| &nbsp;&nbsp;&nbsp; Joseph J. Kirby<br> Lead Portfolio Manager<br>| 2015 |
| &nbsp;&nbsp;&nbsp; Henry F. Otto<br> Managing Director and Portfolio <br> Manager<br>| 2015 |
| &nbsp;&nbsp;&nbsp; Steven M. Tonkovich<br> Managing Director and Portfolio <br> Manager<br>| 2015 |

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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.

CSP-86703T_790_485_477.12 (5/26)

SunAmerica Series Trust

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