JNL Series Trust

04/27/2026 | Press release | Distributed by Public on 04/27/2026 06:33

Summary Prospectus by Investment Company (Form 497K)

Summary Prospectus - April 27, 2026

JNL/JPMorgan U.S. Value Fund

Class A

Class I

Before you invest, you may want to review the Fund's Prospectus, which contains more information about the Fund and its risks. You can find the Fund's Prospectus and other information about the Fund, including the Statement of Additional Information ("SAI") and most recent reports to shareholders, online at https://www.jackson.com/fund-literature.html. You can also get this information at no cost by calling 1-800-644-4565 (Annuity and Life Service Center), 1-800-599-5651 (NY Annuity and Life Service Center), 1-800-777-7779 (for contracts purchased through a bank or financial institution) or 1-888-464-7779 (for NY contracts purchased through a bank or financial institution), or by sending an email request to [email protected]. The current Prospectus and SAI, both dated April 27, 2026, as amended, are incorporated by reference into (which means they legally are a part of) this Summary Prospectus.

Investment Objective. The investment objective of the Fund is capital growth over the long-term.

Expenses. This table describes the fees and expenses that you may pay if you buy, hold and sell shares of the Fund.

The expenses do not reflect the expenses of the variable insurance contracts or the separate account through which you indirectly invest in the Fund, whichever may be applicable, and the total expenses would be higher if they were included.

You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees
(fees paid directly from your investment)

Not Applicable

Annual Fund Operating Expenses
(Expenses that you pay each year as a percentage of the value of your investment)
Class A
Management Fee 0.48%
Distribution and/or Service (12b-1) Fees 0.30%
Other Expenses1 0.11%
Total Annual Fund Operating Expenses 0.89%
1 "Other Expenses" include an Administrative Fee of 0.10% which is payable to Jackson National Asset Management, LLC ("JNAM" or "Adviser").
Annual Fund Operating Expenses
(Expenses that you pay each year as a percentage of the value of your investment)
Class I
Management Fee 0.48%
Distribution and/or Service (12b-1) Fees 0.00%
Other Expenses1 0.11%
Total Annual Fund Operating Expenses 0.59%
1 "Other Expenses" include an Administrative Fee of 0.10% which is payable to Jackson National Asset Management, LLC ("JNAM" or "Adviser").

Expense Example. This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. Also, this example does not reflect the expenses of the variable insurance contracts or the separate account through which you indirectly invest in the Fund, whichever may be applicable, and the total expenses would be higher if they were included. The table below shows the expenses you would pay on a $10,000 investment, assuming (1) 5% annual return; (2) redemption at the end of each time period; and (3) that the Fund operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

JNL/JPMorgan U.S. Value Fund Class A
1 year 3 years 5 years 10 years
$91 $284 $493 $1,096
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JNL/JPMorgan U.S. Value Fund Class I
1 year 3 years 5 years 10 years
$60 $189 $329 $738

Portfolio Turnover (% of average value of portfolio). The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs. These costs, which are not reflected in Annual Fund Operating Expenses or in the Expense Example above, affect the Fund's performance.

Period
1/1/2025 - 12/31/2025 21 %

Principal Investment Strategies. Under normal circumstances, the Fund invests at least 80% of its net assets (plus the amount of borrowings for investment purposes) in common stocks. J.P. Morgan Investment Management, Inc. ("Sub-Adviser") applies an active equity management style focused on identifying attractively valued securities given their growth potential over a long-term time horizon. The securities held by the Fund will predominantly be of companies with market capitalizations similar to those within the universe of the Morningstar® US Large-Mid Cap Broad Value Index ("Index"), which includes both large cap and mid cap companies. As of the reconstitution of the Index on December 31, 2025, the market capitalizations of the companies in the Index ranged from $3.781 trillion to $1.309 billion.

The Fund may sell a security for several reasons, including a change in the company's fundamentals or if the Sub-Adviser believes the security is no longer attractively valued. Investments may also be sold if the Sub-Adviser identifies a stock that it believes offers a better investment opportunity.

While common stocks are the Fund's primary investment, the Fund may also invest in real estate investment trusts ("REITs") and depositary receipts. Depositary receipts are financial instruments representing a foreign company's publicly traded securities. A depositary receipt trades on a stock exchange in a country different from the company's local market.

Derivatives, which are instruments that have a value based on another instrument, exchange rate or index, may be used as substitutes for securities in which the Fund can invest. To the extent the Fund uses derivatives, the Fund will primarily use futures contracts to more effectively gain targeted equity exposure from its cash positions.

Principal Risks of Investing in the Fund. An investment in the Fund is not guaranteed. As with any mutual fund, the value of the Fund's shares will change, and you could lose money by investing in the Fund. The principal risks associated with investing in the Fund include:

· Equity securities risk - Common and preferred stocks represent equity ownership in a company. Stock markets are volatile, and equity securities generally have greater price volatility than fixed-income securities. The price of equity or equity-related securities will fluctuate and can decline and reduce the value of a portfolio investing in equity or equity-related securities. The value of equity or equity-related securities purchased or held by the Fund could decline if the financial condition of the companies the Fund invests in decline or if overall market and economic conditions deteriorate. They may also decline due to factors that affect a particular industry or industries, such as labor shortages or an increase in production costs and competitive conditions within an industry. In addition, they may decline due to general market conditions that are not specifically related to a company or industry, such as real or perceived adverse economic conditions, changes in the general outlook for corporate earnings, changes in interest or currency rates or generally adverse investor sentiment.
· Market risk - Portfolio securities may decline in value due to factors affecting securities markets generally, such as real or perceived adverse economic, political, or regulatory conditions, inflation, changes in interest or currency rates or adverse investor sentiment, public health issues, including widespread disease and virus epidemics or pandemics, war, terrorism or natural disasters, among others. Adverse market conditions may be prolonged and may not have the same impact on all types of securities. The values of securities may fall due to factors affecting a particular issuer, industry or the securities market as a whole.
· Investment style risk - The returns from a certain investment style may be lower than the returns from the overall stock market. Value stocks may not increase in price if other investors fail to recognize the company's value or the factors that are expected to increase the price of the security do not occur. Over market cycles, different investment styles may sometimes outperform other investment styles (for example, growth investing may outperform value investing).
· Large-capitalization investing risk - Large-capitalization stocks as a group could fall out of favor with the market, which may cause the Fund to underperform funds that focus on other types of stocks.
· Mid-capitalization investing risk - The stocks of mid-capitalization companies can be more volatile and their shares can be less liquid than those of larger companies. Mid-capitalization companies may have limited product lines, markets or financial resources or may depend on the expertise of a few people and may be subject to more abrupt or erratic market movements than securities of larger, more established companies or the market averages in general. Securities of such issuers may lack sufficient market liquidity to effect sales at an advantageous time or without a substantial drop in price.
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· Derivatives risk - Investments in derivatives, which are financial instruments whose value depends on, or is derived from, the value of underlying assets, reference rates, or indices, can be highly volatile and may be subject to transaction costs and certain risks, such as unanticipated changes in securities prices and global currency investment. Derivatives also are subject to leverage risk, liquidity risk, interest rate risk, market risk, counterparty risk, and credit risk. They also involve the risk of mispricing or improper valuation and the risk that changes in the value of the derivative may not correlate perfectly with the underlying asset, interest rate or index. Gains or losses from derivatives can be substantially greater than the derivatives' original cost.
· Foreign securities risk - Investments in, or exposure to, foreign securities involve risks not typically associated with U.S. investments. These risks include, among others, adverse fluctuations in foreign currency values, possible imposition of foreign withholding or other taxes on income payable on the securities, as well as adverse political, social and economic developments, such as political upheaval, acts of terrorism, financial troubles, sanctions or the threat of new or modified sanctions, or natural disasters. Many foreign securities markets, especially those in emerging market countries, are less stable, smaller, less liquid, and less regulated than U.S. securities markets, and the costs of trading in those markets is often higher than in U.S. securities markets. There may also be less publicly available information about issuers of foreign securities compared to issuers of U.S. securities. In addition, the economies of certain foreign markets may not compare favorably with the economy of the United States with respect to issues such as growth of gross national product, reinvestment of capital, resources and balance of payments position.
· Real estate investment risk - Risks of investing in real estate securities include falling property values due to increasing vacancies in rental properties, declining rents resulting from economic, legal, tax, cultural, political or technological developments, lack of liquidity, limited diversification, and sensitivity to certain economic factors such as interest-rate changes and other market conditions. When growth is slowing, demand for property decreases and prices may decline, which could impact the value of real estate investments as well as mortgage-backed securities that may be held by the Fund. Real estate company share prices may drop because of the failure of borrowers to pay their loans and poor management, and residential developers, in particular, could be negatively impacted by falling home prices, slower mortgage origination and rising construction costs. The securities of smaller real estate-related issuers can be more volatile and less liquid than securities of larger issuers and their issuers can have more limited financial resources.
· REIT investment risk - The risks of investing in REITs include certain risks associated with the direct ownership of real estate and the real estate industry in general. These include risks related to general, regional and local economic conditions; difficulties in valuing and disposing of real estate; fluctuations in interest rates and property tax rates; shifts in zoning laws; environmental regulations and other governmental action; cash flow dependency; increased operating expenses; lack of availability of mortgage funds; losses due to natural disasters; overbuilding; losses due to casualty or condemnation; changes in property values and rental rates; the management skill and creditworthiness of the REIT manager; and other factors. REITs may have limited financial resources, may trade less frequently and in limited volume, may engage in dilutive offerings of securities and may be more volatile than other securities. REITs could be adversely affected by failure to maintain their exemptions from registration under the Investment Company Act of 1940, as amended, or failure to qualify for the "dividends paid deduction" under the Internal Revenue Code of 1986, as amended, which allows REITs to reduce their corporate taxable income for dividends paid to their shareholders.
· Liquidity risk - Investments in securities that are difficult to purchase or sell (illiquid or thinly-traded securities) may reduce returns if the Fund is unable to sell the securities at an advantageous time or price or achieve its desired level of exposure to a certain sector. Liquidity risk arises, for example, from small average trading volumes, trading restrictions, or temporary suspensions of trading. To meet redemption requests, the Fund may be forced to sell securities at an unfavorable time and/or under unfavorable conditions.
· Redemption risk - Large redemption activity could result in the Fund being forced to sell portfolio securities at a loss or before the Adviser or Sub-Adviser would otherwise decide to do so. Large redemption activity in the Fund may also result in increased expense ratios, higher levels of realized capital gains or losses with respect to the Fund's portfolio securities, higher brokerage commissions, and other transaction costs.
· Managed portfolio risk - As an actively managed portfolio, the Fund's portfolio manager(s) make decisions to buy and sell holdings in the Fund's portfolio. Because of this, the value of the Fund's investments could decline because the financial condition of an issuer may change (due to such factors as management performance, reduced demand or overall market changes), financial markets may fluctuate or overall prices may decline, the Sub-Adviser's investment techniques could fail to achieve the Fund's investment objective or negatively affect the Fund's investment performance, or legislative, regulatory, or tax developments may affect the investment techniques available to the Sub-Adviser of the Fund. There is no guarantee that the investment objective of the Fund will be achieved.


Performance. The performance information shown provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns compared with those of a broad-based securities market index and an additional index that the Adviser believes more closely reflects the market segments in which the Fund invests. Performance prior to April 27, 2020 reflects the Fund's results when managed by the former sub-adviser, Franklin Mutual Advisers, LLC. The Fund's past performance is not necessarily an indication of how the Fund will perform in the future.

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The returns shown in the bar chart and table do not include charges that will be imposed by variable insurance products. If these amounts were reflected, returns would be less than those shown.

Effective April 27, 2020, the Fund was combined with JNL/PPM America Value Equity Fund (the "Acquired Fund"), with the Fund as the surviving Fund. The performance shown is the Fund's historic performance and does not reflect the performance of the Acquired Fund.

Annual Total Returns as of December 31

Class A

Best Quarter (ended 12/31/2020): 15.79%; Worst Quarter (ended 3/31/2020): -29.39%

Annual Total Returns as of December 31

Class I

Best Quarter (ended 12/31/2020): 15.84%; Worst Quarter (ended 3/31/2020): -29.31%

Average Annual Total Returns as of 12/31/2025
1 year 5 year 10 year
JNL/JPMorgan U.S. Value Fund (Class A) 13.86 % 11.97 % 9.01 %
Morningstar US Target Market Exposure Index (reflects no deduction for fees, expenses, or taxes) 17.80 % 13.88 % 14.77 %
Morningstar US Large-Mid Cap Broad Value Index (reflects no deduction for fees, expenses, or taxes) 18.83 % 13.38 % 12.50 %
Average Annual Total Returns as of 12/31/2025
1 year 5 year 10 year
JNL/JPMorgan U.S. Value Fund (Class I) 14.21 % 12.32 % 9.31 %
Morningstar US Target Market Exposure Index (reflects no deduction for fees, expenses, or taxes) 17.80 % 13.88 % 14.77 %
Morningstar US Large-Mid Cap Broad Value Index (reflects no deduction for fees, expenses, or taxes) 18.83 % 13.38 % 12.50 %
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Portfolio Management.

Investment Adviser to the Fund:
Jackson National Asset Management, LLC ("JNAM")

Sub-Adviser:
J.P. Morgan Investment Management Inc. ("JPMorgan")

Portfolio Managers:

Name: Joined Fund Management Team In: Title:
Andrew Brandon April 2020 Managing Director, JPMorgan
David Silberman April 2020 Managing Director, JPMorgan

Purchase and Redemption of Fund Shares

Only separate accounts of Jackson National Life Insurance Company ("Jackson National") or Jackson National Life Insurance Company of New York ("Jackson National NY") and series, including fund of funds, of registered investment companies in which either or both of those insurance companies invest may purchase shares of the Fund. You may invest indirectly in the Fund through your purchase of a variable annuity or life insurance contract issued by a separate account of Jackson National or Jackson National NY that invests directly, or through a fund of funds, in this Fund. Any minimum initial or subsequent investment requirements and redemption procedures are governed by the applicable separate account through which you invest indirectly.

This Fund serves as an underlying investment by insurance companies, affiliated investment companies, and retirement plans for funding variable annuity and life insurance contracts and retirement plans.

Tax Information

The Fund expects to be treated as a partnership for U.S. federal income tax purposes, and does not expect to make regular distributions (other than in redemption of Fund shares) to shareholders, which generally are the participating insurance companies investing in the Fund through separate accounts of Jackson National or Jackson National NY and mutual funds owned directly or indirectly by such separate accounts. You should consult the prospectus of the appropriate separate account or description of the plan for a discussion of the U.S. federal income tax consequences to you of your contract, policy, or plan.

Payments to Broker-Dealers and Financial Intermediaries

If you invest in the Fund under a variable insurance contract or a plan that offers a variable insurance contract as a plan option through a broker-dealer or other financial intermediary (such as a financial institution), the Fund and its related companies may pay the intermediary for the sale of Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson to recommend the Fund over another investment. Ask your salesperson or visit your financial intermediary's Website for more information.

JNL Series Trust published this content on April 27, 2026, and is solely responsible for the information contained herein. Distributed via EDGAR on April 27, 2026 at 12:33 UTC. If you believe the information included in the content is inaccurate or outdated and requires editing or removal, please contact us at [email protected]