Summary Prospectus by Investment Company (Form 497K)

Summary Prospectus

July 29, 2025

Seasons Series Trust

SA Franklin Allocation Moderately Aggressive Portfolio (formerly, SA Putnam Asset Allocation Diversified Growth Portfolio)

(Class 1, Class 2 and Class 3 Shares)

Seasons Series Trust's Statutory Prospectus and Statement of Additional Information, each dated July 29, 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 Seasons 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 [email protected].

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.

Investment Goal

The Portfolio's investment goal is capital appreciation.

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 2	Class 3
Management Fees	0.85%	0.85%	0.85%
Service (12b-1) Fees	None	0.15%	0.25%
Other Expenses	0.22%	0.22%	0.22%
Total Annual Portfolio Operating Expenses Before Fee Waivers and/ or Expense Reimbursements	1.07%	1.22%	1.32%
Fee Waivers and/or Expense Reimbursements1	0.18%	0.18%	0.18%

	Class 1	Class 2	Class 3
Total Annual Portfolio Operating Expenses After Fee Waivers and/or Expense Reimbursements1	0.89%	1.04%	1.14%

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 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

SA Franklin Allocation Moderately Aggressive Portfolio (formerly, SA

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 Shares	$91	$322	$573	$1,289
Class 2 Shares	106	369	653	1,461
Class 3 Shares	116	401	706	1,575

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 69% of the average value of its portfolio.

Principal Investment Strategies of the Portfolio

The Portfolio attempts to achieve its investment goal by investing, under normal circumstances, through strategic allocation of approximately 80% (with a range of 65-95%) of its assets in equity securities and approximately 20% (with a range of 5-35%) of its assets in fixed income securities. Using qualitative analysis and quantitative techniques, the subadviser adjusts portfolio allocations from time to time within these ranges to try to optimize the Portfolio's performance consistent with its goal.

The subadviser invests mainly in a diversified portfolio of equity securities (growth or value stocks or both) of companies of any size. The subadviser may consider, among other things, a company's valuation, financial strength, growth potential, competitive position in its industry, projected future earnings, cash flows and dividends when deciding whether to buy or sell equity investments. The subadviser also invests, to a lesser extent, in a diversified portfolio of fixed income investments, including both U.S. and foreign government obligations and corporate obligations. The subadviser may consider, among other things, credit, interest rate and prepayment risks, as well as general market conditions when deciding whether to buy or sell fixed income investments.

The Portfolio may invest in foreign securities (up to 60% of net assets), and short-term investments (up to 20% of net assets).

The Portfolio may invest in derivatives, such as equity index futures, options, foreign currency forwards and total

return swaps. The subadviser may invest in such instruments for hedging and non-hedging purposes: for example, the subadviser may use foreign currency forwards to increase or decrease the portfolio's exposure to a particular currency or group of currencies. Derivatives may also be used as a substitute for a direct investment in the securities of one or more issuers, or they may be used to take "short" positions, the values of which move in the opposite direction from the underlying investment, index or currency.

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 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.

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.

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. The 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.

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

SA Franklin Allocation Moderately Aggressive Portfolio (formerly, SA

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.

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. A downgrade of the ratings of U.S. Government debt obligations, or concerns about the U.S. Government's credit quality in general, could have a substantial negative effect on the U.S. and global economies. In addition, although the U.S. Government has honored its credit obligations, there remains a possibility that the U.S. could default on its obligations. The consequences of such an unprecedented event are impossible to predict, but it is likely that a default by the U.S. would be highly disruptive to the U.S. and global securities markets and could significantly impair the value of the Portfolio's investments.

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.

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.

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.

Small- and Mid-Cap Companies Risk. Companies with smaller market capitalization (particularly under $1 billion depending on the market) tend to be at early stages of development with limited product lines, 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. Securities of small- and mid-cap companies are usually more volatile and entail greater risks than securities of large-cap companies.

Growth Stock Risk. Growth stocks may lack the dividend yield associated with value stocks that can cushion total return in a bear market. Also, growth stocks normally carry a higher price/earnings ratio than many other stocks. Consequently, if earnings expectations are not met, the market price of growth stocks will often decline more than other stocks.

Value Investing Risk. The Portfolio may focus on selecting value-style stocks. When investing in securities which are believed to be undervalued in the market, there is a risk that the market may not recognize a security's intrinsic value for a long period of time, or that a stock judged to be undervalued may actually be appropriately priced.

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 with the goal of enhancing 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 unlimited loss. Derivatives are also associated with various other risks, including market risk,

SA Franklin Allocation Moderately Aggressive Portfolio (formerly, SA

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.

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.

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 or exchange rates. 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 (or other positions) are not denominated.

Quantitative Investing Risk. The value of securities selected using quantitative analysis can react differently to issuer, political, market, and economic developments from the market as a whole or securities selected using only fundamental analysis. The factors used in quantitative analysis and the weight placed on those factors may not be predictive of a security's value. In addition, factors that affect a security's value can change over time and these changes may not be reflected in the quantitative model.

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, sanctions and other armed conflicts; trade wars and similar conflicts; disease/virus

outbreaks and epidemics; recessions; taxation and international tax treaties; currency, interest rates and price fluctuations; and other conditions or events. In addition, the adviser's or a subadviser's assessment of securities held in the Portfolio may prove incorrect, resulting in losses or poor performance even in a rising market.

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.

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 Russell 3000® Index (a broad-based securities market index) and a blended index. The blended index consists of 60% Russell 3000® Index, 15% MSCI EAFE Index (net), 15% Bloomberg U.S. Aggregate Bond Index, 5% JP Morgan Developed Market High Yield Index, and 5% MSCI Emerging Markets Index (net)SM (the "SA Franklin Allocation Moderately Aggressive Blended Index"). The SA Franklin Allocation Moderately Aggressive 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.

Effective April 30, 2025, Franklin Advisers, Inc. ("Franklin") assumed subadvisory duties of the Portfolio and Putnam Investment Management, LLC ("Putnam") assumed sub-subadvisory duties of the Portfolio. Prior to April 30, 2025, Putnam subadvised the Portfolio.

(Class 1 Shares)

 

SA Franklin Allocation Moderately Aggressive Portfolio (formerly, SA

During the period shown in the bar chart: 

Highest Quarterly Return:	June 30, 2020	16.68%
Lowest Quarterly Return:	March 31, 2020	-18.17%
Year to Date Most Recent Quarter:	June 30, 2025	7.76%

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

	1 Year	5 Years	10 Years
Class 1 Shares	19.21%	10.05%	8.58%
Class 2 Shares	19.01%	9.88%	8.41%
Class 3 Shares	18.89%	9.76%	8.30%
Russell 3000® Index (reflects no deduction for fees, expenses or taxes)	23.81%	13.86%	12.55%
SA Frk Alloc Mod Aggr Blended Index	15.61%	9.41%	9.10%

Investment Adviser

The Portfolio's investment adviser is SunAmerica. The Portfolio is subadvised by Franklin. The Portfolio is sub-subadvised by Putnam.

Portfolio Managers 

Name and Title	Portfolio Manager of the Portfolio Since
Brett S. Goldstein, CFA Senior Vice President, Head of Asset Allocation Portfolio Management and Portfolio Manager	2019
Jacqueline Kenney, CFA Senior Vice President, Head of Direct Implementation and Portfolio Manager	2025
Adrian H. Chan, CFA Senior Vice President, Head of Quantitative Research and Portfolio Manager	2021
Thomas Nelson, CFA, CAIA Senior Vice President, Head of Market Strategy and Portfolio Manager	2025

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 SunAmerica 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 SunAmerica 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.