FRANKLIN TEMPLETON SMACS: SERIES CP

FRANKLIN STRATEGIC SERIES

TICKER: FASBX

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, statement of additional information, reports to shareholders and other information about the Fund online at www.franklintempleton.com/prospectus. You can also get this information at no cost by calling (800) DIAL BEN/342-5236 or by sending an e-mail request to prospectus.us.franklintempleton@fisglobal.com. The Fund’s prospectus and statement of additional information, both dated June 20, 2025, as may be supplemented, are all incorporated by reference into this Summary Prospectus.

FRANKLIN TEMPLETON SMACS: SERIES CP
SUMMARY PROSPECTUS

Investment Goal

To seek to provide high current income. Capital appreciation over the long term is a secondary goal.

Fees and Expenses of the Fund

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

Annual Fund Operating Expenses

(expenses that you pay each year as a percentage of the value of your investment)

^1. The investment manager does not charge the Fund a fee for its investment management services. The Fund is part of a wrap fee program or other program advised or sub-advised by the investment manager or its affiliates, clients of which often pay a single aggregate fee to the program sponsor for all costs and expenses of the program (including investment management and custody fees). You are strongly encouraged to read carefully the wrap fee brochure or other disclosures provided to you in connection with the program account.

^2. Other expenses are estimated based on the expenses the Fund expects to incur for the current fiscal year and include 0.20% of non-recurring costs related to commencement of the Fund’s operations. Actual expenses may differ from estimates.

^3. The investment manager has agreed to waive fees and/or reimburse operating expenses (excluding certain non-routine expenses or costs, such as those relating to litigation, indemnification, reorganizations and liquidations) for the Fund so that the ratio of total annual fund operating expenses will not exceed 0.00% until April 30, 2027. During the term, the fee waiver and expense reimbursement agreement may not be terminated or amended without approval of the board of trustees except to add series or classes, to reflect the extension of the termination date or to lower the waiver and expense limitation.

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. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. The Example reflects adjustments made to the Fund's operating expenses due to the fee waivers and/or expense reimbursements by management for the 1 Year numbers only. The Example does not include the fees and expenses (including investment management fees) paid in the wrap programs or certain other programs advised or sub-advised by the investment manager or its affiliates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

FRANKLIN TEMPLETON SMACS: SERIES CP
SUMMARY PROSPECTUS

Portfolio Turnover

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 and may result in higher taxes when shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the Example, affect the Fund’s performance. The Fund is newly offered; therefore, it does not have a turnover rate to report for the most recent fiscal year.

Principal Investment Strategies

Under normal market conditions, the Fund will invest predominantly in debt securities, which may be represented by derivative investments, such as futures and swap agreements, that provide exposure to debt securities. Debt securities include all varieties of fixed, floating and variable rate instruments including secured and unsecured bonds, mortgage-backed securities (MBS) (including residential mortgage-backed securities (RMBS) and commercial mortgage-backed securities (CMBS)) and other asset-backed securities, senior, bank and corporate floating rate and term loans (and loan participations), collateralized loan obligations (CLOs), corporate high yield bonds, sovereign debt, including emerging-markets sovereign debt, U.S. and agency securities, debentures, zero coupon bonds, notes, and short-term debt instruments.

The Fund seeks income by selecting investments such as corporate, agency, securitized, and sovereign bonds that the investment manager believes have potential to provide consistent income. The Fund maintains the flexibility to invest in securities from a variety of sectors, but from time to time, based on economic conditions, the Fund may have significant investments in particular sectors. The Fund may invest in foreign securities, including emerging markets.

The Fund may invest in debt securities of any maturity or duration.

The Fund may invest its assets in below investment grade securities without limit to potentially increase returns. The below-investment grade debt securities in which the Fund invests are generally rated at least Caa by Moody's Investors Service (Moody's) or CCC by S&P Global Ratings (S&P) or are unrated securities the Fund's investment manager determines are of comparable quality.

FRANKLIN TEMPLETON SMACS: SERIES CP
SUMMARY PROSPECTUS

The Fund is a "non-diversified" fund, which means it generally invests a greater proportion of its assets in the securities of one or more issuers and invests overall in a smaller number of issuers than a diversified fund.

The mortgage securities in which the Fund may invest also include fixed or adjustable-rate mortgage-backed securities (ARMS), those sold through the "to-be-announced" market (TBAs), commercial mortgage-backed securities (CMBS), non-agency residential mortgage-backed securities (RMBS) and collateralized mortgage obligations (CMOs), as well as other mortgage-related asset-backed securities. The Fund also may invest in mortgage dollar rolls.

The Fund may invest in complex fixed income securities, such as collateralized debt obligations (CDOs), which are generally a type of asset-backed securities. The Fund's investments in CDOs may include investments in collateralized loan obligations (CLOs), which are a type of CDO.

For purposes of pursuing its investment goals, the Fund regularly enters into various currency-related transactions involving derivative instruments, including currency and cross currency forwards, currency swaps, currency and currency index futures contracts and currency options. The Fund regularly enters into interest rate and credit-related transactions involving derivative instruments, including U.S. Treasury futures, interest rate, fixed income total return and credit default swaps (including credit default index swaps), and options on interest rate and credit default swaps, and interest rate and/ or bond futures contracts and options on interest rate futures. The use of these derivative transactions may allow the Fund to obtain net long or net short exposures to selected currencies, interest rates, countries, durations or credit risks. These derivative instruments may also be used for hedging purposes, to enhance Fund returns or to obtain exposure to various market sectors.

The Fund's investment manager is a research-driven, fundamental investor that relies on a team of analysts to provide in-depth industry expertise and uses both qualitative and quantitative analysis to evaluate issuers. The Fund uses an active asset allocation strategy to try to achieve its investment goals. This means the Fund actively purchases and sells securities and other investments in various market sectors based on the investment manager's ongoing assessment of changing economic, global market, industry, and issuer conditions. The Fund may seek to quickly and efficiently shift its exposure among various types of debt securities, including through derivative instruments and at any given time may have substantial amount of exposure to any type of debt or other income-producing investment. The investment manager uses a "top-down" analysis of macroeconomic trends combined with a "bottom-up" fundamental analysis of market sectors, industries, and issuers to try to take advantage of varying sector

FRANKLIN TEMPLETON SMACS: SERIES CP
SUMMARY PROSPECTUS

reactions to economic events. The investment manager may utilize quantitative models to identify investment opportunities as part of the portfolio construction process for the Fund. Quantitative models are proprietary systems that rely on mathematical computations to identify investment opportunities.

Principal Risks

You could lose money by investing in the Fund. Mutual fund shares are not deposits or obligations of, or guaranteed or endorsed by, any bank, and are not insured by the Federal Deposit Insurance Corporation, the Federal Reserve Board, or any other agency of the U.S. government.

Interest Rate: When interest rates rise, debt security prices generally fall. The opposite is also generally true: debt security prices rise when interest rates fall. Interest rate changes are influenced by a number of factors, including government policy, monetary policy, inflation expectations, perceptions of risk, and supply of and demand for bonds. In general, securities with longer maturities or durations are more sensitive to interest rate changes.

Credit: An issuer of debt securities may fail to make interest payments or repay principal when due, in whole or in part. Changes in an issuer's financial strength or in a security's or government's credit rating may affect a security's value.

Mortgage Securities and Asset-Backed Securities: Mortgage securities differ from conventional debt securities because principal is paid back periodically over the life of the security rather than at maturity. The Fund may receive unscheduled payments of principal due to voluntary prepayments, refinancings or foreclosures on the underlying mortgage loans. Because of prepayments, mortgage securities may be less effective than some other types of debt securities as a means of "locking in" long-term interest rates and may have less potential for capital appreciation during periods of falling interest rates. A reduction in the anticipated rate of principal prepayments, especially during periods of rising interest rates, may increase or extend the effective maturity and duration of mortgage securities, making them more sensitive to interest rate changes, subject to greater price volatility, and more susceptible than some other debt securities to a decline in market value when interest rates rise.

Issuers of asset-backed securities may have limited ability to enforce the security interest in the underlying assets, and credit enhancements provided to support the securities, if any, may be inadequate to protect investors in the event of default. Like mortgage securities, asset-backed securities are subject to prepayment and extension risks.

FRANKLIN TEMPLETON SMACS: SERIES CP
SUMMARY PROSPECTUS

Income: The Fund's distributions to shareholders may decline when prevailing interest rates fall, when the Fund experiences defaults on debt securities it holds or when the Fund realizes a loss upon the sale of a debt security.

Market: The market values of securities or other investments owned by the Fund will go up or down, sometimes rapidly or unpredictably. The market value of a security or other investment may be reduced by market activity or other results of supply and demand unrelated to the issuer. This is a basic risk associated with all investments. When there are more sellers than buyers, prices tend to fall. Likewise, when there are more buyers than sellers, prices tend to rise. In addition, the value of the Fund’s investments may go up or down due to general market or other conditions that are not specifically related to a particular issuer, such as: real or perceived adverse economic changes, including widespread liquidity issues and defaults in one or more industries; changes in interest or exchange rates; unexpected natural and man-made world events, such as diseases or disasters; financial, political or social disruptions, including terrorism and war; and U.S. trade disputes or other disputes with specific countries that could result in tariffs, trade barriers and investment restrictions in certain securities in those countries. Any of these conditions can adversely affect the economies of many companies, sectors, nations, regions and the market in general, in ways that cannot necessarily be foreseen.

New Fund: The Fund is newly or recently established and has no performance history as of the date of this Prospectus. There can be no assurance that the Fund will grow to or maintain an economically viable size, which could result in the Fund being liquidated at any time without shareholder approval and at a time that may not be favorable for all shareholders. If the Fund does not attract additional assets, the Fund’s expenses will continue to be spread over a small asset base.

Non-Diversification: Because the Fund is non-diversified, it may be more sensitive to economic, business, political or other changes affecting individual issuers or investments than a diversified fund, which may negatively impact the Fund's performance and result in greater fluctuation in the value of the Fund’s shares.

Variable Rate Securities: Because changes in interest rates on variable rate securities (including floating rate securities) may lag behind changes in market rates, the value of such securities may decline during periods of rising interest rates until their interest rates reset to market rates. During periods of declining interest rates, because the interest rates on variable rate securities generally reset downward, their market value is unlikely to rise to the same extent as the value of comparable fixed rate securities.

FRANKLIN TEMPLETON SMACS: SERIES CP
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When-Issued and Delayed Delivery Transactions: Mortgage-backed securities may be issued on a when-issued or delayed delivery basis, where payment and delivery take place at a future date. Because the market price of the security may fluctuate during the time before payment and delivery, the Fund assumes the risk that the value of the security at delivery may be more or less than the purchase price.

Foreign Securities (non-U.S.): Investing in foreign securities typically involves more risks than investing in U.S. securities, including risks related to currency exchange rates and policies, country or government specific issues, less favorable trading practices or regulation and greater price volatility. Certain of these risks also may apply to securities of U.S. companies with significant foreign operations. The risks of investing in foreign securities are typically greater in less developed or emerging market countries.

Currency Management Strategies: Currency management strategies may substantially change the Fund’s exposure to currency exchange rates and could result in losses to the Fund if currencies do not perform as the investment manager expects. In addition, currency management strategies, to the extent that they reduce the Fund’s exposure to currency risks, also reduce the Fund’s ability to benefit from favorable changes in currency exchange rates. Using currency management strategies for purposes other than hedging further increases the Fund’s exposure to foreign investment losses. Currency markets generally are not as regulated as securities markets. In addition, currency rates may fluctuate significantly over short periods of time, and can reduce returns.

Sovereign Debt Securities: Sovereign debt securities are subject to various risks in addition to those relating to debt securities and foreign investments generally, including, but not limited to, the risk that a governmental entity may be unwilling or unable to pay interest and repay principal on its sovereign debt, or otherwise meet its obligations when due because of cash flow problems, insufficient foreign reserves, the relative size of the debt service burden to the economy as a whole, the government’s policy towards principal international lenders such as the International Monetary Fund, or the political considerations to which the government may be subject. If a sovereign debtor defaults (or threatens to default) on its sovereign debt obligations, the indebtedness may be restructured. Some sovereign debtors have in the past been able to restructure their debt payments without the approval of some or all debt holders or to declare moratoria on payments. In the event of a default on sovereign debt, the Fund may also have limited legal recourse against the defaulting government entity.

Emerging Market Countries: The Fund’s investments in emerging market countries are subject to all of the risks of foreign investing generally, and have

FRANKLIN TEMPLETON SMACS: SERIES CP
SUMMARY PROSPECTUS

additional heightened risks due to a lack of established legal, political, business and social frameworks to support securities markets, including: delays in settling portfolio securities transactions; currency and capital controls; greater sensitivity to interest rate changes; pervasiveness of corruption and crime; currency exchange rate volatility; and inflation, deflation or currency devaluation.

Derivative Instruments: The performance of derivative instruments depends largely on the performance of an underlying instrument, such as a currency, security, interest rate or index, and such instruments often have risks similar to their underlying instrument, in addition to other risks. Derivative instruments involve costs and can create economic leverage in the Fund's portfolio which may result in significant volatility and cause the Fund to participate in losses (as well as gains) in an amount that exceeds the Fund's initial investment. Other risks include illiquidity, mispricing or improper valuation of the derivative instrument, and imperfect correlation between the value of the derivative and the underlying instrument so that the Fund may not realize the intended benefits. When a derivative is used for hedging, the change in value of the derivative may also not correlate specifically with the currency, security, interest rate, index or other risk being hedged. With over-the-counter derivatives, there is the risk that the other party to the transaction will fail to perform.

Mortgage Dollar Rolls: In a mortgage dollar roll, the Fund takes the risk that: the market price of the mortgage-backed securities will drop below their future repurchase price; the securities that it repurchases at a later date will have less favorable market characteristics; the other party to the agreement will not be able to perform; the roll adds leverage to the Fund's portfolio; and, it increases the Fund's sensitivity to interest rate changes. In addition, investment in mortgage dollar rolls may increase the portfolio turnover rate for the Fund.

U.S. Government Securities: Not all obligations of the U.S. Government, its agencies and instrumentalities are backed by the full faith and credit of the United States. Some obligations are backed only by the credit of the issuing agency or instrumentality, and in some cases there may be some risk of default by the issuer. Government agency or instrumentality issues have different levels of credit support. U.S. government-sponsored entities ("GSEs"), such as Fannie Mae and Freddie Mac, may be chartered by Acts of Congress, but their securities are neither issued nor guaranteed by the U.S. government. Although the U.S. government has provided financial support to Fannie Mae, Freddie Mac and certain other GSEs in the past, no assurance can be given that the U.S. government will continue to do so. Accordingly, securities issued by Fannie Mae and Freddie Mac may involve a risk of non-payment of principal and interest. Investors should remember that guarantees of timely repayment of principal and interest do not apply to the market prices and yields of the securities or to the net

FRANKLIN TEMPLETON SMACS: SERIES CP
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asset value or performance of the Fund, which will vary with changes in interest rates and other market conditions.

High-Yield Mortgage Securities: Mortgage securities that are rated below investment grade, or unrated and deemed to be of comparable quality by the investment manager, involve greater credit risk with respect to the issuers of the mortgage securities and the borrowers in the underlying mortgages than higher-quality mortgage securities. High-yield mortgage securities are generally considered predominantly speculative by the applicable rating agencies as their issuers are more likely to encounter financial difficulties. High-yield mortgage securities are more vulnerable to changes in the relevant economy, such as a recession or a sustained period of rising interest rates. The prices of high-yield mortgage securities generally fluctuate more than those of higher credit quality and are generally more illiquid (harder to sell) and harder to value.

Collateralized Debt Obligations (CDOs): The risks of an investment in a CDO, a type of asset backed security, and which includes CLOs, depend largely on the type of collateral held by the special purpose entity (SPE) and the tranche of the CDO in which the Fund invests and may be affected by the performance of a CDO's collateral manager. CDOs may be deemed to be illiquid and subject to the Fund’s restrictions on investments in illiquid investments. In addition to the normal risks associated with debt securities and asset backed securities (e.g., interest rate risk, credit risk and default risk), CDOs carry additional risks including, but not limited to: (i) the possibility that distributions from collateral securities will not be adequate to make interest or other payments; (ii) the quality of the collateral may decline in value or quality or go into default or be downgraded; (iii) the Fund may invest in tranches of a CDO that are subordinate to other classes; and (iv) the complex structure of the security may not be fully understood at the time of investment. These risks are amplified in tranches of CDOs that are subordinate to other tranches.

High-Yield Debt Instruments: Issuers of lower-rated or “high-yield” debt instruments (also known as “junk bonds”) are not as strong financially as those issuing higher credit quality debt instruments. High-yield debt instruments are generally considered predominantly speculative by the applicable rating agencies as their issuers are more likely to encounter financial difficulties because they may be more highly leveraged, or because of other considerations. In addition, high yield debt instruments generally are more vulnerable to changes in the relevant economy, such as a recession or a sustained period of rising interest rates, that could affect their ability to make interest and principal payments when due. The prices of high-yield debt instruments generally fluctuate more than those of higher credit quality. High-yield debt instruments are generally more illiquid (harder to sell) and harder to value.

FRANKLIN TEMPLETON SMACS: SERIES CP
SUMMARY PROSPECTUS

Floating Rate Corporate Investments: Floating rate corporate loans and corporate debt securities generally have credit ratings below investment grade and may be subject to resale restrictions. They are often issued in connection with highly leveraged transactions, and may be subject to greater credit risks than other investments including the possibility of default or bankruptcy. In addition, a secondary market in corporate loans may be subject to irregular trading activity, wide bid/ask spreads and extended trade settlement periods, which may impair the ability to accurately value existing and prospective investments and to realize in a timely fashion the full value upon the sale of a corporate loan. A significant portion of floating rate investments may be “covenant lite” loans that may contain fewer or less restrictive constraints on the borrower or other borrower-friendly characteristics.

Prepayment: Prepayment risk occurs when a debt security can be repaid in whole or in part prior to the security's maturity and the Fund must reinvest the proceeds it receives, during periods of declining interest rates, in securities that pay a lower rate of interest. Also, if a security has been purchased at a premium, the value of the premium would be lost in the event of prepayment. Prepayments generally increase when interest rates fall.

Extension: The market value of some fixed rate debt securities (such as certain asset-backed and mortgage-backed securities) will be adversely affected when bond calls or prepayments on underlying mortgages or other assets are less or slower than anticipated, particularly when interest rates rise. When that occurs, the effective maturity date of the Fund’s investment may be extended, resulting in an increase in interest rate sensitivity to that of a longer-term instrument. Such extension may also effectively lock-in a below market interest rate and reduce the value of the debt security.

Liquidity: The trading market for a particular security or type of security or other investments in which the Fund invests may become less liquid or even illiquid. Reduced liquidity will have an adverse impact on the Fund’s ability to sell such securities or other investments when necessary to meet the Fund’s liquidity needs, which may arise or increase in response to a specific economic event or because the investment manager wishes to purchase particular investments or believes that a higher level of liquidity would be advantageous. Reduced liquidity will also generally lower the value of such securities or other investments. Market prices for such securities or other investments may be relatively volatile.

Management: The Fund is subject to management risk because it is an actively managed investment portfolio. The Fund's investment manager applies investment techniques and risk analyses in making investment decisions for the Fund, but there can be no guarantee that these decisions will produce the desired results.

FRANKLIN TEMPLETON SMACS: SERIES CP
SUMMARY PROSPECTUS

Cybersecurity: Cybersecurity incidents, both intentional and unintentional, may allow an unauthorized party to gain access to Fund assets, Fund or customer data (including private shareholder information), or proprietary information, cause the Fund, the investment manager, and/or their service providers (including, but not limited to, Fund accountants, custodians, sub-custodians, transfer agents and financial intermediaries) to suffer data breaches, data corruption or loss of operational functionality or prevent Fund investors from purchasing, redeeming or exchanging shares or receiving distributions. The investment manager has limited ability to prevent or mitigate cybersecurity incidents affecting third party service providers, and such third party service providers may have limited indemnification obligations to the Fund or the investment manager. Cybersecurity incidents may result in financial losses to the Fund and its shareholders, and substantial costs may be incurred in an effort to prevent or mitigate future cybersecurity incidents. Issuers of securities in which the Fund invests are also subject to cybersecurity risks, and the value of these securities could decline if the issuers experience cybersecurity incidents.

Because technology is frequently changing, new ways to carry out cyber attacks are always developing. Therefore, there is a chance that some risks have not been identified or prepared for, or that an attack may not be detected, which puts limitations on the Fund's ability to plan for or respond to a cyber attack. Like other funds and business enterprises, the Fund, the investment manager, and their service providers are subject to the risk of cyber incidents occurring from time to time.

Performance

Because the Fund is new, it has no performance history. Once the Fund has commenced operations, you can obtain updated performance information at www.franklintempleton.com or by calling (800) DIAL BEN/342-5236. The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Performance information, when available, will not include the fees and expenses (including investment management fees) paid in the wrap programs or certain other programs advised or sub-advised by the investment manager or its affiliates.

Investment Manager

Franklin Advisers, Inc. (Advisers or investment manager)

FRANKLIN TEMPLETON SMACS: SERIES CP
SUMMARY PROSPECTUS

Portfolio Managers

Albert Chan, CFA
Portfolio Manager of Advisers and portfolio manager of the Fund since inception (June 2025).

Tina Chou
Portfolio Manager of Advisers and portfolio manager of the Fund since inception (June 2025).

Jacob K. Chu
Portfolio Manager of Advisers and portfolio manager of the Fund since inception (June 2025).

Patrick Klein, Ph.D.
Senior Vice President of Advisers and portfolio manager of the Fund since inception (June 2025).

Thomas Runkel, CFA
Vice President of Advisers and portfolio manager of the Fund since inception (June 2025).

Purchase and Sale of Fund Shares

Shares of the Fund are used exclusively for separately managed accounts advised or sub-advised by Advisers or its affiliates and decisions as to whether to purchase or redeem shares of the Fund for a separately managed account will be made by the investment manager of the separately managed account. Shares of the Fund may be redeemed on any business day that the New York Stock Exchange is open. In addition, shares will be redeemed when you terminate your managed account. There is no minimum investment for purchases.

Taxes

The Fund’s distributions are generally taxable to you as ordinary income, capital gains, or some combination of both, unless you are investing through a tax-advantaged arrangement, such as a 401(k) plan or an individual retirement account, in which case your distributions would generally be taxed when withdrawn from the tax-advantaged account.

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