Results

JNL Series Trust

05/01/2024 | Press release | Distributed by Public on 05/01/2024 06:43

Prospectus by Investment Company - Form 497

PROSPECTUS

April 29, 2024

JNL® SERIES TRUST

Business Address: 1 Corporate Way • Lansing, Michigan 48951

Mailing Address: 225 W. Wacker Drive • Chicago, Illinois 60606

This Prospectus provides you with the basic information you should know before investing in the JNL Series Trust ("Trust").

The shares of the Trust are sold to life insurance company separate accounts and other registered investment companies to fund the benefits of variable annuity contracts and variable life insurance policies. Shares of the Trust may also be sold directly to non-qualified retirement plans and to other affiliated funds. The Trust currently offers shares in the following separate Funds ("Fund" or "Funds"), each with its own investment objective. For U.S. federal income tax purposes, the Funds are classified as partnerships.

JNL Multi-Manager Small Cap Value Fund Class I Partnership
JNL/MFS Mid Cap Value Fund Class I Partnership
JNL/PPM America High Yield Bond Fund Class I Partnership
JNL/T. Rowe Price Mid-Cap Growth Fund Class I Partnership
JNL/WMC Value Fund Class I Partnership

The Securities and Exchange Commission ("SEC") and the Commodity Futures Trading Commission ("CFTC") have not approved or disapproved these securities or determined if this Prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

For more detailed information about the Trust and the Funds, see the Trust's Statement of Additional Information ("SAI") dated April 29, 2024, which is incorporated by reference into (which means it legally is a part of) this prospectus.

TABLE OF CONTENTS

Summary Overview of Each Fund 1
Investment Objective, Expenses, Portfolio Turnover, Principal Investment Strategies, Principal Risks of Investing in the Fund, Performance, Portfolio Management, Purchase and Redemption of Fund Shares, Tax Information, and Payments to Broker-Dealers and Financial Intermediaries
JNL Multi-Manager Small Cap Value Fund 1
JNL/MFS Mid Cap Value Fund 7
JNL/PPM America High Yield Bond Fund 12
JNL/T. Rowe Price Mid-Cap Growth Fund 18
JNL/WMC Value Fund 23
Appendix A A-1

Summary Prospectus - April 29, 2024

JNL Multi-Manager Small Cap Value Fund

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 29, 2024, 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 long-term total return.

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 I
Management Fee 0.67%
Distribution and/or Service (12b-1) Fees 0.00%
Other Expenses1 0.10%
Acquired Fund Fees and Expenses2 0.04%
Total Annual Fund Operating Expenses 0.81%
1 "Other Expenses" include an Administrative Fee of 0.10% which is payable to Jackson National Asset Management, LLC ("JNAM" or "Adviser").
2 Acquired Fund Fees and Expenses are the indirect expenses of investing in other investment companies. Accordingly, the expense ratio presented in the Financial Highlights section of the prospectus will not correlate to the Total Annual Fund Operating Expenses disclosed above.

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 Multi-Manager Small Cap Value Fund Class I
1 year 3 years 5 years 10 years
$83 $259 $450 $1,002

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
1/1/2023 - 12/31/2023 24 %

Principal Investment Strategies. The Fund seeks to achieve its investment objective by investing, under normal circumstances, at least 80% of its assets (net assets plus the amount of any borrowings made for investment purposes) in the equity securities of small-capitalization companies that, when purchased, have market capitalizations between the smallest company and 120% of the largest company in the Morningstar US Small Cap Broad Value Extended Index. As of December 31, 2023, the range of such companies in the Morningstar U.S. Small Cap Broad Value Extended Index was $146.0 million to $14.79 billion.

1

The Fund has flexibility in the relative weighting of each asset class and expects to vary the percentages of assets invested in each asset class from time to time. JNAM's allocations to the underlying Sub-Advisers will be a function of a variety of factors including each underlying strategy's expected returns, volatility, correlation, and contribution to the Fund's overall risk profile.

Unaffiliated investment managers ("Sub-Advisers") generally provide day to day management for a portion of the Fund's assets (each portion is sometimes referred to as a "sleeve"). Each Sub-Adviser may use different investment strategies in managing Fund assets, acts independently from the others, and uses its own methodology for selecting investments. Jackson National Asset Management, LLC ("JNAM" or "Adviser") is responsible for identifying and retaining the Sub-Advisers for the selected strategies and for monitoring the services provided by the Sub-Advisers. JNAM provides qualitative and quantitative supervision as part of its process for selecting and monitoring the Sub-Advisers. JNAM is also responsible for selecting the Fund's investment strategies and for determining the amount of Fund assets to allocate to each Sub-Adviser. Based on JNAM's ongoing evaluation of the Sub-Advisers, JNAM may adjust allocations among Sub-Advisers.

JNAM also may choose to allocate the Fund's assets to additional Sub-Advisers in the future. There is no assurance that any or all of the strategies discussed in this prospectus will be used by JNAM or the Sub-Advisers.

JNAM may also manage Fund assets directly to seek to enhance returns, or to hedge and to manage the Fund's cash and short-term instruments.

Below are the principal investment strategies for each Sub-Adviser's strategy, but the Sub-Advisers may also implement other investment strategies in keeping with their respective strategy's objective.

Congress Strategy

Congress Asset Management Company, LLP ("Congress") constructs the Congress Strategy by investing in the common stocks of small capitalization ("small-cap") companies.

Congress generally constructs the strategy to consist of 70-110 companies. The Congress Strategy is predominantly focused on investing in companies domiciled within the United States. The strategy can invest in foreign securities, primarily through American Depositary Receipts ("ADRs") and the equity securities of companies incorporated outside of the U.S. that are traded on U.S. exchanges. Investments in ADRs are generally less than 10%.

The Congress Strategy focuses on opportunities that Congress believes have significant upside potential, emphasizing a combination of both valuation and earnings power. Congress employs a fundamental, bottom-up investment approach that includes both financial modeling and qualitative analysis. A stock may be sold, among other reasons, if Congress believes that the company's cumulative valuation and earnings upside potential approaches fair value, better opportunities exist, the company experiences fundamental deterioration, or the market capitalization rises above a targeted range.

Cooke & Bieler Strategy

Cooke & Bieler, L.P. ("C&B") constructs the C&B Small Cap Value Equity Strategy by investing in the common stocks of small capitalization ("small-cap") companies.

C&B manages a relatively focused portfolio of typically 40 to 60 companies that enables C&B to provide adequate diversification while allowing the portfolio to behave differently than the market.

C&B selects securities for the strategy based on an analysis of a company's financial characteristics and an assessment of the quality of a company's management.

WCM Strategy

WCM Investment Management, LLC ("WCM") constructs the WCM Strategy by investing in the common stocks of small capitalization ("small-cap") companies that WCM believes are undervalued.

WCM generally constructs the strategy to consist of 25-40 companies. WCM typically selects shareholder-friendly companies with a durable competitive advantage that are trading at a discount to intrinsic value. Characteristics of these companies include sustained, high returns on invested capital, consistent free cash flow generation, and impressive compounding of net book value over time.

2

Reinhart Strategy

Reinhart Partners, LLC ("Reinhart") constructs the Reinhart Strategy by investing equity securities issued by small-capitalization ("small-cap") companies.

Reinhart may invest up to 20% of its net assets in securities of foreign issuers, real estate investment trusts ("REITs") and securities of other investment companies, including exchange-traded funds ("ETFs"). Reinhart's investment in other investment companies and ETFs will be within the limits of the Investment Company Act of 1940, as amended. Reinhart's investments in foreign securities may include ADRs.

River Road Strategy

River Road Asset Management, LLC ("River Road") constructs the River Road Strategy by investing primarily in equity securities of small capitalization companies that River Road believes are undervalued. The River Road Strategy may continue to hold securities of a portfolio company that subsequently drops below or appreciates above this capitalization threshold. The River Road Strategy may also invest in companies of other market capitalizations, REITs, BDC-RICs, convertible securities, and foreign stocks.

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:

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.
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.
Company risk - Investments in U.S. and/or foreign-traded equity securities may fluctuate more than the values of other types of securities in response to changes in a particular company's financial condition.
Issuer risk - The value of an individual security or particular type of security can be more volatile than the market as a whole and can perform differently from the market as a whole. A security's value may decline for reasons that directly relate to the issuer, such as management performance, corporate governance, financial leverage and reduced demand for the issuer's goods or services.
Small-capitalization investing risk - Investing in smaller companies, some of which may be newer companies or start-ups, generally involves greater risks than investing in larger, more established ones. The securities of companies with smaller market capitalizations often are less widely held and trade less frequently and in lesser quantities, and their market prices often fluctuate more, than the securities of companies with larger market capitalizations.
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).
Allocation risk - The Fund's ability to achieve its investment objective depends upon the investment manager's analysis of such factors as macroeconomic trends, outlooks for various industries and asset class valuations, and its ability to select an appropriate mix of asset classes based on its analysis of such factors. The Fund is subject to the risk of changes in market, investment, and economic conditions in the selection and percentages of allocations.
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.

3

Depositary receipts risk - Depositary receipts, such as American depositary receipts ("ADRs"), global depositary receipts ("GDRs"), and European depositary receipts ("EDRs"), may be issued in sponsored or un-sponsored programs. They may be traded in the over-the-counter ("OTC") market or on a regional exchange, or may otherwise have limited liquidity. The prices of depositary receipts may differ from the prices of securities upon which they are based. In a sponsored program, a security issuer has made arrangements to have its securities traded in the form of depositary receipts. In an un-sponsored program, the issuer may not be directly involved in the creation of the program. Holders of un-sponsored depositary receipts generally bear all the costs of the facility. The depository usually charges fees upon deposit and withdrawal of the underlying securities, the conversion of dividends into U.S. dollars or other currency, the disposition of non-cash distributions, and the performance of other services. Depositary receipts involve many of the same risks as direct investments in foreign securities. These risks include: fluctuations in currency exchange rates, which are affected by international balances of payments and other economic and financial conditions; government intervention; and speculation. With respect to certain foreign countries, there is the possibility of expropriation or nationalization of assets, confiscatory taxation, political and social upheaval, and economic instability. Investments in depositary receipts that are exchange traded or OTC may also subject the Fund to liquidity risk. This risk is enhanced in connection with OTC depositary receipts.
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.


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 September 28, 2015, reflects the Fund's results when managed by the former sub-adviser, Franklin Advisory Services, LLC. The Fund's past performance is not necessarily an indication of how the Fund will perform in the future.

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 26, 2021, the Fund was combined with JNL/PPM America Small Cap Value Fund ("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.

4

Effective April 29, 2024, the Morningstar® US Market Extended Index℠ replaced the Morningstar® US Small Cap Broad Value Extended Index℠ as the Fund's broad-based securities market index in accordance with new regulatory disclosure requirements. The Morningstar® US Small Cap Broad Value Extended Index℠ is included as an additional index for the Fund because the Adviser believes it more closely reflects the market segments in which the Fund invests.

Annual Total Returns as of December 31

Class I

Best Quarter (ended 12/31/2020): 28.37%; Worst Quarter (ended 3/31/2020): -34.71%

Average Annual Total Returns as of 12/31/2023
1 year 5 year 10 year
JNL Multi-Manager Small Cap Value Fund (Class I) 21.37 % 11.95 % 6.56 %
Morningstar US Market Extended Index (reflects no deduction for fees, expenses, or taxes) 26.22 % 15.15 % 11.51 %
Morningstar US Small Cap Broad Value Extended Index (reflects no deduction for fees, expenses, or taxes) 16.27 % 11.64 % 7.36 %

Portfolio Management.

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

Sub-Advisers:
Congress Asset Management Company, LLP ("Congress")
Cooke & Bieler, L.P. ("C&B")
Reinhart Partners, LLC ("Reinhart")
River Road Asset Management, LLC ("River Road")
WCM Investment Management, LLC ("WCM")

Portfolio Managers:

Name: Joined Fund Management Team In: Title:
William Harding, CFA September 2015 Senior Vice President, Chief Investment Officer and Portfolio Manager, JNAM
Sean Hynes, CFA, CAIA September 2015 Vice President and Portfolio Manager, JNAM
Mark Pliska, CFA September 2015 Vice President and Portfolio Manager, JNAM
Jeff Kerrigan, CFA September 2015 Portfolio Manager, Congress
Steve Lyons, CFA September 2015 Partner, C&B
Michael Meyer, CFA September 2015 Partner, C&B
Edward O'Connor, CFA September 2015 Partner, C&B
R. James O'Neil, CFA September 2015 Partner, C&B
Mehul Trivedi, CFA September 2015 Partner, C&B
William Weber, CFA September 2015 Partner, C&B
Andrew Armstrong, CFA December 2015 Partner, C&B
Wesley Lim, CFA December 2018 Principal, C&B
Matthew Martinek, CFA October 2019 Principal and Lead Portfolio Manager, Reinhart
Brent Jesko October 2019 Principal and Portfolio Manager, Reinhart
J. Justin Akin April 2021 Senior Portfolio Manager, River Road

5

Name: Joined Fund Management Team In: Title:
R. Andrew Beck April 2021 Chief Executive Officer & Senior Portfolio Manager, River Road
Jon Detter August 2018 Portfolio Manager and Business Analyst, WCM
Anthony Glickhouse August 2018 Portfolio Manager and Business Analyst, WCM
Patrick F. McGee August 2018 Portfolio Manager and Business Analyst, WCM

Purchase and Redemption of Fund Shares

Only separate accounts of Jackson National Life Insurance Company ("Jackson") or Jackson National Life Insurance Company of New York ("Jackson 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 or Jackson 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 or Jackson 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.

6

Summary Prospectus - April 29, 2024

JNL/MFS Mid Cap Value Fund

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 29, 2024, 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 to seek capital appreciation.

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 I
Management Fee 0.55%
Distribution and/or Service (12b-1) Fees 0.00%
Other Expenses1 0.10%
Total Annual Fund Operating Expenses 0.65%
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/MFS Mid Cap Value Fund Class I
1 year 3 years 5 years 10 years
$66 $208 $362 $810

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
1/1/2023 - 12/31/2023 19 %

Principal Investment Strategies. The Fund seeks to meet its objective by investing, under normal circumstances, at least 80% of its assets (net assets plus the amount of any borrowings made for investment purposes) in issuers with medium market capitalizations.

Massachusetts Financial Services Company ("Sub-Adviser" or "MFS") generally defines medium market capitalization issuers as issuers with market capitalizations similar to those of issuers included in the Russell Midcap® Value Index over the last 13 months at the time of purchase. As of December 31, 2023, the range of market capitalizations of the Russell Midcap® Value Index was between approximately $270.2 million and $73.3 billion.

7

MFS normally invests the Fund's assets primarily in equity securities. Equity securities include common stocks, equity interests in real estate investment trusts ("REITs"), and other securities that represent an ownership interest (or right to acquire an ownership interest) in a company or other issuer.

MFS focuses on investing the Fund's assets in the stocks of companies that it believes are undervalued compared to their perceived worth (value companies).

MFS may invest the Fund's assets in foreign securities.

MFS normally invests the Fund's assets across different industries and sectors, but MFS may invest a significant percentage of the Fund's assets in issuers in a single industry or sector.

MFS uses an active bottom-up investment approach to buying and selling investments for the Fund. Investments are selected primarily based on fundamental analysis of individual issuers. Quantitative screening tools that systematically evaluate an issuer may also be considered.

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:

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.
Investment strategy risk - The Sub-Adviser uses the principal investment strategies and other investment strategies to seek to achieve the Fund's investment objective. Investment decisions made by the Sub-Adviser in accordance with these investment strategies may not produce the returns the Sub-Adviser expected, and may cause the Fund's shares to decline in value or may cause the Fund to underperform other funds with similar investment objectives.
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.
Stock risk - Stock markets may experience significant short-term volatility and may fall sharply at times. Different stock markets may behave differently from each other and U.S. stock markets may move in the opposite direction from one or more foreign stock markets. The prices of individual stocks generally do not all move in the same direction at the same time and a variety of factors can affect the price of a particular company's stock.
Company risk - Investments in U.S. and/or foreign-traded equity securities may fluctuate more than the values of other types of securities in response to changes in a particular company's financial condition.
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).
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.

8

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.
Concentration risk- The Fund may concentrate its investments in certain securities. To the extent that the Fund focuses on particular countries, regions, industries, sectors, issuers, types of investment or limited number of securities from time to time, the Fund may be subject to greater risks of adverse economic, business or political developments in the area of focus than a fund that invests in a wider variety of countries, regions, industries, sectors or investments.
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.
Financial services risk - An investment in issuers in the financial services sector may be adversely affected by, among other things: (i) changes in the regulatory framework or interest rates that may negatively affect financial service businesses; (ii) exposure of a financial institution to a non-diversified or concentrated loan portfolio; (iii) exposure to financial leverage and/or investments or agreements which, under certain circumstances, may lead to losses (e.g., sub-prime loans); and (iv) the risk that a market shock or other unexpected market, economic, political, regulatory, public health or other event might lead to a sudden decline in the values of most or all companies in the financial services sector.
Accounting risk - The Fund bases investment selections, in part, on information drawn from the financial statements of issuers. Financial statements may not be accurate, may reflect differing approaches with respect to auditing and reporting standards and may affect the ability of the Fund's investment manager to identify appropriate investment opportunities.


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 24, 2017, reflects the Fund's results when managed by the former sub-adviser, Goldman Sachs Assets Management, L.P. Performance results include the effect of expense waiver/reduction arrangements for some or all of the periods shown. If such arrangements had not been in place, performance for those periods would have been lower. The Fund's past performance is not necessarily an indication of how the Fund will perform in the future.

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.

9

Effective August 13, 2018, the Fund was combined with JNL/Invesco Mid Cap Value 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 JNL/Invesco Mid Cap Value Fund.

Effective April 27, 2020, the Fund was combined with JNL/PPM America Mid Cap Value 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 JNL/PPM America Mid Cap Value Fund.

Effective April 29, 2024, the Morningstar® US Market Extended Index℠ replaced the Morningstar® US Mid Cap Broad Value Index℠ as the Fund's broad-based securities market index in accordance with new regulatory disclosure requirements. The Morningstar® US Mid Cap Broad Value Index℠ is included as an additional index for the Fund because the Adviser believes it more closely reflects the market segments in which the Fund invests.

Annual Total Returns as of December 31

Class I

Best Quarter (ended 6/30/2020): 19.87%; Worst Quarter (ended 3/31/2020): -31.23%

Average Annual Total Returns as of 12/31/2023
1 year 5 year 10 year
JNL/MFS Mid Cap Value Fund (Class I) 12.67 % 12.99 % 8.07 %
Morningstar US Market Extended Index (reflects no deduction for fees, expenses, or taxes) 26.22 % 15.15 % 11.51 %
Morningstar US Mid Cap Broad Value Index (reflects no deduction for fees, expenses, or taxes) 11.83 % 11.89 % 9.16 %

Portfolio Management.

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

Sub-Adviser:
Massachusetts Financial Services Company (d/b/a MFS Investment Management) ("MFS")

Portfolio Managers:

Name: Joined Fund Management Team In: Title:
Kevin Schmitz April 2017 Investment Officer, MFS
Brooks Taylor April 2017 Investment Officer, MFS
Richard Offen June 2021 Investment Officer, MFS

10

Purchase and Redemption of Fund Shares

Only separate accounts of Jackson National Life Insurance Company ("Jackson") or Jackson National Life Insurance Company of New York ("Jackson 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 or Jackson 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 or Jackson 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.

11

Summary Prospectus - April 29, 2024

JNL/PPM America High Yield Bond Fund

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 29, 2024, 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 to maximize current income. As a secondary objective, the Fund seeks capital appreciation.

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 I
Management Fee 0.34%
Distribution and/or Service (12b-1) Fees 0.00%
Other Expenses1 0.11%
Acquired Fund Fees and Expenses2 0.01%
Total Annual Fund Operating Expenses 0.46%
1 "Other Expenses" include an Administrative Fee of 0.10% which is payable to Jackson National Asset Management, LLC ("JNAM" or "Adviser").
2 Acquired Fund Fees and Expenses are the indirect expenses of investing in other investment companies. Accordingly, the expense ratio presented in the Financial Highlights section of the prospectus will not correlate to the Total Annual Fund Operating Expenses disclosed above.

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/PPM America High Yield Bond Fund Class I
1 year 3 years 5 years 10 years
$47 $148 $258 $579

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
1/1/2023 - 12/31/2023 58 %

12

Principal Investment Strategies. The Fund invests under normal circumstances at least 80% of its assets (net assets plus the amount of any borrowings made for investment purposes) in high-yield, high-risk debt securities ("junk bonds") and related investments that are rated below investment grade (i.e., rated below BBB- or Baa3) by at least one major credit rating agency, or, if not rated by any credit rating agency, determined to be below investment-grade quality by PPM America, Inc. ("Sub-Adviser"). Below investment grade securities could include split-rated securities, which are securities that are rated as investment grade by at least one credit rating agency but rated below investment grade by another agency. Below investment grade securities offer a higher yield, but generally carry more risks than higher rated securities with similar maturities. As a result, an investment in below investment grade securities is considered speculative.

The Fund may also invest up to 20% of its total assets in equity securities (other than preferred stock, in which the Fund may invest without limit). The Fund may invest in securities sold pursuant to Rule 144A of the Securities Act of 1933, as amended. Rule 144A securities are restricted securities that can be resold to qualified institutional buyers but not to the general public. The Fund may also invest in bank loans.

The Fund may also invest up to 35% of its total assets in securities of foreign issuers. To the extent that the Fund invests in emerging market debt rated below BBB- or Baa3 by at least one major credit rating agency, or, if not rated by any credit rating agency, determined by Sub-Adviser to be below investment-grade quality, this will be considered as an investment in a high-yield security for purposes of the 80% investment minimum requirement.

Additionally, the Fund has the ability to invest in other investment companies, such as exchange-traded funds ("ETFs"), money market funds, unit investment trusts and open-end and closed-end funds, including affiliated investment companies. For purposes of satisfying the 80% requirement, the Fund may invest in high yield ETFs comprised of the securities described above. The Fund generally uses high yield ETFs as a tool to obtain exposure to the securities in which it primarily invests.

In seeking to maximize income, the Sub-Adviser seeks to identify the best relative value investment opportunities across various debt sectors by analyzing overall economic conditions within and among these sectors. In pursuing capital appreciation, the Sub-Adviser looks for those companies that it believes have the highest potential for improving credit fundamentals. In light of the risks associated with high yield securities, the Sub-Adviser takes various factors into consideration in evaluating the creditworthiness of an issuer.

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:

Credit risk - Credit risk is the actual or perceived risk that the issuer of a bond, borrower, guarantor, counterparty, or other entity responsible for payment will not pay interest and principal payments when due. The price of a debt instrument can decline in response to changes in the financial condition of the issuer, borrower, guarantor, counterparty, or other entity responsible for payment. The Fund could lose money if the issuer or guarantor of a fixed-income security, or the counterparty to a derivatives contract, repurchase agreement or a loan of portfolio securities, is unable or unwilling to make timely principal and/or interest payments, or to otherwise honor its obligations.
High-yield bonds, lower-rated bonds, and unrated securities risk - High-yield bonds, lower-rated bonds, and unrated securities are broadly referred to as "junk bonds," and are considered below "investment-grade" by national ratings agencies. Junk bonds are subject to the increased risk of an issuer's inability to meet principal and interest payment obligations. As a result, an investment in junk bonds is considered speculative. High-yield bonds may be subject to liquidity risk, and the Fund may not be able to sell a high-yield bond at the price at which it is currently valued.
Issuer risk - The value of an individual security or particular type of security can be more volatile than the market as a whole and can perform differently from the market as a whole. A security's value may decline for reasons that directly relate to the issuer, such as management performance, corporate governance, financial leverage and reduced demand for the issuer's goods or services.
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.
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.
Distressed debt risk - The Fund may invest in securities of issuers that are, or are about to be, involved in reorganizations, financial restructurings, or bankruptcy (also known as "distressed debt"). Such distressed debt securities involve substantial risk in addition to the risks of investing in lower-grade debt securities. To the extent that the Fund invests in distressed debt, the Fund is subject to the risk that it may lose a portion or all or its investment in the distressed debt and may incur higher expenses trying to protect its interests in distressed debt.

13

Income risk - The Fund is subject to the risk that the income generated from the Fund's investments may decline in the event of falling interest rates. Income risk may be high if the Fund's income is predominantly based on short-term interest rates, which can fluctuate significantly over short periods. The Fund's distributions to shareholders may decline when interest rates fall.
Corporate loan, sovereign entity loan, and bank loan risk - Commercial banks, sovereign entities, and other financial institutions or institutional investors make corporate loans to companies or sovereign entities that need capital to grow, restructure, or for infrastructure projects. These instruments are commonly referred to as "loans" or "bank loans." Borrowers generally pay interest on corporate loans at "floating" rates that change in response to changes in market interest rates such as the Secured Overnight Financing Rate ("SOFR") or the prime rates of U.S. banks. As a result, the value of such loan investments is generally less exposed to the adverse effects of interest rate fluctuations than investments that pay a fixed rate of interest. However, the market for certain loans may not be sufficiently liquid, and the Fund may have difficulty selling them. It may take longer than seven days for transactions in loans to settle. As a result, sale proceeds related to the sale of loans may not be available to make additional investments until a substantial period after the sale of the loans. Certain loans may be classified as "illiquid" securities. Additionally, because a loan may not be considered a security, the Fund may not be afforded the same legal protections afforded securities under federal securities laws. Thus, the Fund generally must rely on contractual provisions in the loan agreement and common-law fraud protections under applicable state law.
Senior loans risk - The senior loans in which the Fund invests are usually rated below investment grade. The amount of public information with respect to loans may be less extensive than that available for registered or exchange listed securities. An economic downturn generally leads to a higher non-payment rate, and a senior loan may lose significant value before a default occurs. A secured senior loan may not be adequately collateralized. Moreover, any specific collateral used to secure a senior loan may decline in value or become illiquid, which would adversely affect the senior loan's value.
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.
Debt securities ratings risk - The use of credit ratings in evaluating debt securities can involve certain risks, including the risk that the credit rating may not reflect the issuer's current financial condition or events since the security was last rated by a rating agency. Credit ratings may be influenced by conflicts of interest or based on historical data that no longer apply or are accurate.
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.
Rule 144A securities risk - Rule 144A securities are securities offered as exempt from registration with the SEC, but may be treated as liquid securities because there is a market for such securities. Rule 144A securities may have an active trading market, but carry the risk that the active trading market may not continue. To the extent that institutional buyers become, for a time, uninterested in purchasing Rule 144A securities, investing in such securities could increase the Fund's level of illiquidity.
Interest rate risk - When interest rates increase, fixed-income securities generally will decline in value. Long-term fixed income securities normally have more price volatility than short-term fixed income securities. The value of certain equity investments, such as utilities and real estate-related securities, may also be sensitive to interest rate changes.
Call risk - Call risk is the risk that, during a period of falling interest rates, the issuer may redeem a security by repaying it early, which may reduce the Fund's income if the proceeds are reinvested at lower interest rates.
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.

14

Exchange-traded funds investing risk - An investment in an ETF generally presents the following risks: (i) the same primary risks as an investment in a conventional fund (i.e., one that is not exchange-traded) that has the same investment objectives, strategies and policies; (ii) the risk that an ETF may fail to accurately track the market segment or index that underlies its investment objective; (iii) price fluctuation, resulting in a loss to the Fund; (iv) the risk that an ETF may trade at a discount to its net asset value; (v) the risk that an active market for an ETF's shares may not develop or be maintained; and (vi) the risk that an ETF may no longer meet the listing requirements of any applicable exchanges on which that ETF is listed. When the Fund invests in an ETF, shareholders of the Fund bear their proportionate share of the ETF's fees and expenses as well as their share of the Fund's fees and expenses.
Investment in other investment companies risk - As with other investments, investments in other investment companies, including exchange-traded funds, are subject to market risk. In addition, if the Fund acquires shares of investment companies, including ones affiliated with the Fund, shareholders bear both their proportionate share of expenses in the Fund (including management and advisory fees) and, indirectly, the expenses of the investment companies in which the Fund invests. To the extent that shares of the Fund are held by an affiliated fund, the ability of the Fund itself to invest in other investment companies may be limited.
Second lien loans risk - Second lien loans generally are subject to similar risks as those associated with investments in senior loans. Because second lien loans are subordinated and thus lower in priority of payment to senior loans, they are subject to the additional risk that the cash flow of the borrower and property securing the loan or debt, if any, may be insufficient to meet scheduled payments after giving effect to the senior secured obligations of the borrower.
Prepayment risk - During periods of falling interest rates, a debt security with a high interest rate may be prepaid before its expected maturity date. The Fund may have to reinvest the proceeds in an investment that may have lower yields than the yield on the prepaid debt security. In addition, prepayment rates are difficult to predict and the potential impact of prepayment on the price of a debt instrument depends on the terms of the instrument.
Settlement risk - Settlement risk is the risk that a settlement in a transfer system does not take place as expected. Loan transactions often settle on a delayed basis compared with securities and the Fund may not receive proceeds from the sale of a loan for a substantial period after the sale, potentially impacting the ability of the Fund to make additional investments or meet redemption obligations. It may take longer than seven days for transactions in loans to settle. In order to meet short-term liquidity needs, the Fund may draw on its cash or other short-term positions, maintain short-term or other liquid assets sufficient to meet reasonably anticipated redemptions, or maintain a credit facility.
Leverage risk - Certain derivative transactions involve the use of leverage and may cause the Fund to liquidate portfolio positions at disadvantageous times to satisfy its obligations. The effect of using leverage is to amplify the Fund's gains and losses in comparison to the amount of the Fund's assets (that is, assets other than borrowed assets) at risk, which may cause the Fund's portfolio to be more volatile. If the Fund uses leverage, the Fund has the risk of capital losses that exceed the net assets of the Fund.
Investment in money market funds risk - Although a money market fund is designed to be a relatively low risk investment, it is not free of risk. An investment in a money market fund is not insured or guaranteed by a Federal Deposit Insurance Corporation or any other government agency. Although such funds seek to maintain a net asset value of $1.00 per share, it is possible to lose money by investing in a money market fund.
Portfolio turnover risk - Frequent changes in the securities held by the Fund, including investments made on a shorter-term basis or in derivative instruments or in instruments with a maturity of one year or less at the time of acquisition, may increase transaction costs, which may reduce performance.


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. The Fund's past performance is not necessarily an indication of how the Fund will perform in the future.

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 June 24, 2019, the Fund was combined with JNL/PPM America Long Short Credit Fund ("Acquired Fund"), a series of Jackson Variable Series Trust, 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.

Effective April 29, 2024, the Bloomberg U.S. Aggregate Index replaced the ICE BofA U.S. High Yield Constrained Index as the Fund's broad-based securities market index in accordance with new regulatory disclosure requirements. The ICE BofA U.S. High Yield Constrained Index is included as an additional index for the Fund because the Adviser believes it more closely reflects the market segments in which the Fund invests.

15

Annual Total Returns as of December 31

Class I

Best Quarter (ended 6/30/2020): 8.56%; Worst Quarter (ended 3/31/2020): -13.47%

Average Annual Total Returns as of 12/31/2023
1 year 5 year 10 year
JNL/PPM America High Yield Bond Fund (Class I) 13.16 % 5.20 % 3.76 %
Bloomberg U.S. Aggregate Index (reflects no deduction for fees, expenses, or taxes) 5.53 % 1.10 % 1.81 %
ICE BofA U.S. High Yield Constrained Index (reflects no deduction for fees, expenses, or taxes) 13.47 % 5.19 % 4.51 %

Portfolio Management.

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

Sub-Adviser:
PPM America, Inc. ("PPM")

Portfolio Managers:

Name: Joined Fund Management Team In: Title:
Adam Spielman June 2018 Senior Managing Director, Head of Leveraged Credit, PPM
Karl Petrovich April 2018 Managing Director, PPM
John Broz (CPA inactive) May 2019 Managing Director, PPM

Purchase and Redemption of Fund Shares

Only separate accounts of Jackson National Life Insurance Company ("Jackson") or Jackson National Life Insurance Company of New York ("Jackson 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 or Jackson 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 or Jackson 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.

16

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.

17

Summary Prospectus - April 29, 2024

JNL/T. Rowe Price Mid-Cap Growth Fund

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 29, 2024, 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 long-term growth of capital.

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 I
Management Fee 0.58%
Distribution and/or Service (12b-1) Fees 0.00%
Other Expenses1 0.10%
Acquired Fund Fees and Expenses2 0.01%
Total Annual Fund Operating Expenses 0.69%
1 "Other Expenses" include an Administrative Fee of 0.10% which is payable to Jackson National Asset Management, LLC ("JNAM" or "Adviser").
2 Acquired Fund Fees and Expenses are the indirect expenses of investing in other investment companies. Accordingly, the expense ratio presented in the Financial Highlights section of the prospectus will not correlate to the Total Annual Fund Operating Expenses disclosed above.

JNAM has contractually agreed to waive a portion of the Fund's management fee in an amount equal to 100% of the net advisory fees payable to an affiliate of the sub-adviser attributable to the Fund's investment in funds managed by that affiliate. The waiver will have the effect of reducing the Acquired Fund Fees and Expenses that are indirectly borne by the Fund. The waiver will continue for at least one year from the date of this Prospectus, so long as the sub-advisory agreement remains in effect, and continue thereafter unless the Board of Trustees approves a change in or elimination of the waiver. The impact of this waiver was less than 0.01% for the previous fiscal year.

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. The example also assumes that the contractual expense limitation agreement is discontinued after one year. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

JNL/T. Rowe Price Mid-Cap Growth Fund Class I
1 year 3 years 5 years 10 years
$70 $221 $384 $859

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.

18

Period
1/1/2023 - 12/31/2023 22 %

Principal Investment Strategies. The Fund seeks to achieve its objective by investing at least 80% of its assets (net assets plus the amount of any borrowings made for investment purposes), under normal circumstances, in a broadly diversified portfolio of common stocks of medium-sized (mid-capitalization) companies whose earnings T. Rowe Price Associates, Inc., the Fund's sub-adviser ("Sub-Adviser"), expects to grow at a faster rate than the average company.

The Sub-Adviser defines mid-capitalization companies as those whose market capitalization, at the time of acquisition by the Fund, falls within the capitalization range of companies in the S&P Mid Cap 400 Index or the Russell MidCap® Growth Index. The market capitalization of companies in the Fund's portfolio, the S&P Mid Cap 400 Index and the Russell MidCap® Growth Index changes over time. As of December 31, 2023, the market capitalization range for the S&P Mid Cap 400 is $2.4 billion to $35.1 billion. As of December 31, 2023, the market capitalization range for the Russell MidCap Growth is $1.0 billion to $73.3 billion. However, the Fund will not automatically sell or cease to purchase stock of a company it already owns just because the company's market capitalization subsequently grows or otherwise falls outside these ranges.

The Fund may at times invest significantly in certain sectors.

In addition, the Fund on occasion will purchase stock of some larger and smaller companies that have qualities consistent with the portfolio's core characteristics but whose market capitalization is outside the capitalization range of mid-cap companies (as defined above) at the time of purchase. The Fund may also invest up to 25% of its total assets, (excluding reserves) in foreign securities, including securities and instruments that are economically tied to emerging markets, and 10% of its assets in futures.

The Fund's investments may include holdings in companies that only recently began to trade publicly.

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:

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.
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. Growth stock prices frequently reflect projections of future earnings or revenues, and if earnings growth expectations are not met, their stock prices will likely fall, which may reduce the value of a Fund's investment in those stocks. Over market cycles, different investment styles may sometimes outperform other investment styles (for example, growth investing may outperform value investing).
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.
Sector risk - Companies with similar characteristics may be grouped together in broad categories called sectors. Sector risk is the risk that securities of companies within specific sectors of the economy can perform differently than the overall market. For example, this may be due to changes in the regulatory or competitive environment or changes in investor perceptions regarding a sector. Because the Fund may allocate relatively more assets to certain sectors than others, the Fund's performance may be more susceptible to any developments which affect those sectors emphasized by the Fund. In addition, the Fund could underperform other funds investing in similar sectors or comparable benchmarks because of the investment manager's choice of securities within such sector.
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.

19

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.
Stock risk - Stock markets may experience significant short-term volatility and may fall sharply at times. Different stock markets may behave differently from each other and U.S. stock markets may move in the opposite direction from one or more foreign stock markets. The prices of individual stocks generally do not all move in the same direction at the same time and a variety of factors can affect the price of a particular company's stock.
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.
Privately placed securities risk - The Fund's investments may also include privately-placed securities, which are subject to resale restrictions. Investments in these securities usually will decrease a Fund's liquidity level to the extent the Fund may be unable to sell or transfer these securities due to restrictions on transfers or on the ability to find buyers interested in purchasing the securities. The illiquid nature of the market for privately placed securities, as well as the lack of publicly available information regarding these securities, may also adversely affect the Fund's ability to fair value such securities at certain times and could make it difficult for the Fund to sell them. The Fund could lose money on such investments.
Investments in IPOs risk - IPOs issued by unseasoned companies with little or no operating history are risky and highly volatile.
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.
Investment strategy risk - The Sub-Adviser uses the principal investment strategies and other investment strategies to seek to achieve the Fund's investment objective. Investment decisions made by the Sub-Adviser in accordance with these investment strategies may not produce the returns the Sub-Adviser expected, and may cause the Fund's shares to decline in value or may cause the Fund to underperform other funds with similar investment objectives.
Accounting risk - The Fund bases investment selections, in part, on information drawn from the financial statements of issuers. Financial statements may not be accurate, may reflect differing approaches with respect to auditing and reporting standards and may affect the ability of the Fund's investment manager to identify appropriate investment opportunities.
Company risk - Investments in U.S. and/or foreign-traded equity securities may fluctuate more than the values of other types of securities in response to changes in a particular company's financial condition.


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 results include the effect of expense waiver/reduction arrangements for some or all of the periods shown. If such arrangements had not been in place, performance for those periods would have been lower. The Fund's past performance is not necessarily an indication of how the Fund will perform in the future.

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 29, 2024, the Morningstar® US Market Extended Index℠ replaced the Morningstar® US Mid Cap Broad Growth Index℠ as the Fund's broad-based securities market index in accordance with new regulatory disclosure requirements. The Morningstar® US Mid Cap Broad Growth Index℠ is included as an additional index for the Fund because the Adviser believes it more closely reflects the market segments in which the Fund invests.

20

Annual Total Returns as of December 31

Class I

Best Quarter (ended 6/30/2020): 27.95%; Worst Quarter (ended 3/31/2020): -23.34%

Average Annual Total Returns as of 12/31/2023
1 year 5 year 10 year
JNL/T. Rowe Price Mid-Cap Growth Fund (Class I) 20.32 % 11.72 % 10.54 %
Morningstar US Market Extended Index (reflects no deduction for fees, expenses, or taxes) 26.22 % 15.15 % 11.51 %
Morningstar US Mid Cap Broad Growth Index (reflects no deduction for fees, expenses, or taxes) 20.84 % 14.09 % 10.51 %

Portfolio Management.

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

Sub-Adviser:
T. Rowe Price Associates, Inc. ("T. Rowe Price")

Sub-Sub-Adviser:
T. Rowe Price Investment Management, Inc. ("Price Investment Management")

Portfolio Manager:

Name: Joined Fund Management Team In: Title:
Brian W.H. Berghuis, CFA 1995 Chairman of Investment Advisory Committee, T. Rowe Price

Purchase and Redemption of Fund Shares

Only separate accounts of Jackson National Life Insurance Company ("Jackson") or Jackson National Life Insurance Company of New York ("Jackson 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 or Jackson 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.

21

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 or Jackson 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.

22

Summary Prospectus - April 29, 2024

JNL/WMC Value Fund

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 29, 2024, 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 long-term growth of capital.

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 I
Management Fee 0.38%
Distribution and/or Service (12b-1) Fees 0.00%
Other Expenses1 0.10%
Total Annual Fund Operating Expenses 0.48%
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/WMC Value Fund Class I
1 year 3 years 5 years 10 years
$49 $154 $269 $604

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
1/1/2023 - 12/31/2023 27 %

Principal Investment Strategies. The Fund seeks to meet its objective by investing under normal circumstances at least 65% of its total assets in common stocks of domestic companies. Although the Fund may invest in companies with a broad range of market capitalizations, the Fund will tend to focus on companies with large market capitalizations (generally above $10 billion). Using a value approach, the Fund seeks to invest in stocks that Wellington Management Company LLP ("Sub-Adviser") believes are underpriced relative to other stocks.

The Fund may invest up to 20% of its total assets in the securities of foreign issuers.

23

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:

Accounting risk - The Fund bases investment selections, in part, on information drawn from the financial statements of issuers. Financial statements may not be accurate, may reflect differing approaches with respect to auditing and reporting standards and may affect the ability of the Fund's investment manager to identify appropriate investment opportunities.
Company risk - Investments in U.S. and/or foreign-traded equity securities may fluctuate more than the values of other types of securities in response to changes in a particular company's financial condition.
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.
Financial services risk - An investment in issuers in the financial services sector may be adversely affected by, among other things: (i) changes in the regulatory framework or interest rates that may negatively affect financial service businesses; (ii) exposure of a financial institution to a non-diversified or concentrated loan portfolio; (iii) exposure to financial leverage and/or investments or agreements which, under certain circumstances, may lead to losses (e.g., sub-prime loans); and (iv) the risk that a market shock or other unexpected market, economic, political, regulatory, public health or other event might lead to a sudden decline in the values of most or all companies in the financial services sector.
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.
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.
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.
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.
Stock risk - Stock markets may experience significant short-term volatility and may fall sharply at times. Different stock markets may behave differently from each other and U.S. stock markets may move in the opposite direction from one or more foreign stock markets. The prices of individual stocks generally do not all move in the same direction at the same time and a variety of factors can affect the price of a particular company's stock.

24


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. The Fund's past performance is not necessarily an indication of how the Fund will perform in the future.

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 29, 2024, the Morningstar® US Target Market Exposure Index℠ replaced the Morningstar® US Large-Mid Cap Broad Value Index℠ as the Fund's broad-based securities market index in accordance with new regulatory disclosure requirements. The Morningstar® US Large-Mid Cap Broad Value Index℠ is included as an additional index for the Fund because the Adviser believes it more closely reflects the market segments in which the Fund invests.

Annual Total Returns as of December 31

Class I

Best Quarter (ended 12/31/2020): 15.18%; Worst Quarter (ended 3/31/2020): -25.70%

Average Annual Total Returns as of 12/31/2023
1 year 5 year 10 year
JNL/WMC Value Fund (Class I) 9.56 % 11.64 % 8.29 %
Morningstar US Target Market Exposure Index (reflects no deduction for fees, expenses, or taxes) 27.18 % 15.64 % 11.96 %
Morningstar US Large-Mid Cap Broad Value Index (reflects no deduction for fees, expenses, or taxes) 14.34 % 12.72 % 9.89 %

Portfolio Management.

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

Sub-Adviser:
Wellington Management Company LLP ("Wellington Management")

Portfolio Managers:

Name: Joined Fund Management Team In: Title:
Adam H. Illfelder, CFA 2018 Senior Managing Director, Partner and Equity Portfolio Manager, Wellington Management
Matthew C. Hand, CFA April 2022 Senior Managing Director, Partner and Equity Portfolio Manager, Wellington Management

Purchase and Redemption of Fund Shares

Only separate accounts of Jackson National Life Insurance Company ("Jackson") or Jackson National Life Insurance Company of New York ("Jackson 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 or Jackson 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.

25

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 or Jackson 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.

26

Appendix A

With the exception of the JNL S&P 500 Index Fund, JNL Bond Index Fund, JNL Emerging Markets Index Fund, JNL International Index Fund, JNL Mid Cap Index Fund, and JNL Small Cap Index Fund, which only offers Class I shares, each Fund offers two classes of shares, Class A and Class I. Class I shares are described in this Prospectus.

A- 1