Anfield Universal Fixed Income ETF

AFIF

Before you invest, you may want to review the Prospectus for Anfield Universal Fixed Income ETF (as defined below), which contains more information about the Anfield Universal Fixed Income ETF and its risks. The current statutory Prospectus and Statement of Additional Information (“SAI”) dated June 24, 2026, are incorporated by reference into this Summary Prospectus. You can find the Anfield Universal Fixed Income ETF ’s Prospectus, SAI, reports to shareholders, and other information about the Anfield Universal Fixed Income ETF online at www.horizonmutualfunds.com. You can also get this information at no cost by calling 1-855-754-7932 or by sending an e-mail request to funds@horizoninvestments.com.

Investment Objective

Anfield Universal Fixed Income ETF (the “Universal Fixed Income Fund” or the “Fund”) seeks current income.

Fees and Expenses of the Universal Fixed Income Fund

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

Example: This Example is intended to help you compare the cost of investing in the Universal Fixed Income Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Universal Fixed Income Fund for the time periods indicated and then sell all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Universal Fixed Income Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based upon these assumptions your costs would be:

Portfolio Turnover

The Universal Fixed Income 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 Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the Example, affect the Universal Fixed Income Fund’s performance. During the most recent fiscal year, the portfolio turnover rate for the Universal Fixed Income Predecessor Fund was 16% of the average value of the portfolio.

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Principal Investment Strategies of the Universal Fixed Income Fund

The Fund is an actively managed exchange-traded fund (“ETF”) that normally invests at least 80% of its net assets, including any borrowings for investment purposes, in a diversified portfolio of fixed income instruments. The Fund is not managed relative to an index and has broad flexibility to allocate its assets across different types of securities and sectors of the fixed income markets. The principal investments of the Fund include corporate bonds, U.S. government and agency securities, master-limited partnerships (“MLPs”) (tied to energy-related commodities), preferred securities, private debt, foreign sovereign bonds, convertible securities, bank loans, mortgage-backed securities, and cash equivalent instruments. To a lesser extent, the Fund may invest in dividend-paying common stocks. The Fund may invest in structured products including mortgage-related and other asset-backed securities including residential mortgage-backed securities, commercial mortgage-backed securities, asset-backed securities and collateralized loan obligations (“CLOs”).

The Fund may invest in fixed income instruments with fixed or adjustable (floating) rates. The Fund does not seek to maintain any particular weighted average maturity or duration, and may invest in fixed income instruments of any maturity or duration. The Fund may invest in both investment grade and below investment grade (often referred to as “high yield” or “junk” bonds) securities, subject to a maximum of up to 50% of the Fund’s assets in below investment grade securities. The Fund will typically invest a substantial portion of the Fund’s investments in securities of issuers with a range of credit ratings that have stable or improving fundamentals. Securities of these issuers include secured bank loans and below investment grade bonds. The Fund may also engage in short sales when it believes a security is overvalued in the market. The Fund may invest without limit in U.S. and non-U.S. dollar-denominated securities of U.S. and foreign issuers. Depending on market conditions, the Fund may at times focus its investments in particular sectors or areas of the economy.

The Fund’s investment process includes both a top-down macroeconomic analysis and a bottom-up analysis of individual securities. In its evaluation of a potential investment, the Fund conducts a fundamental analysis of the individual issuer, reviews the valuation of the security and the relative valuations of similar securities, and analyzes the supply and demand for the security in the market. The Fund seeks to identify companies in stable and growing sectors of the economy that generate sufficient revenue to meet their debt obligations. The Fund will sell a portfolio holding when the security no longer meets its investment criteria or when a more attractive investment is available.

Options purchased by the Fund may be exchange-traded, including Flexible Exchange Options (“FLEX Options”). FLEX Options are customizable exchange-traded option contracts guaranteed for settlement by the Options Clearing Corporation (the “OCC”) and allow customization of terms such as exercise price, exercise style, and expiration date.

The Fund may also engage in securities lending to generate income.

Principal Risks of the Universal Fixed Income Fund

Many factors affect the Universal Fixed Income Fund’s performance. The Universal Fixed Income Fund is not federally insured or guaranteed by any government agency. You may lose money by investing in the Fund and there is no guarantee that the Fund will achieve its investment objective. The principal risks affecting shareholders’ investments in the Fund are set forth below.

Yield Curve Risk. This is the risk that there is an adverse shift in market interest rates of fixed income investments. The risk is associated with either flattening or steepening of the yield curve, which is a result of changing yields among comparable bonds with different maturities. If the yield curve flattens, then the yield spread between long-and short-term interest rates narrows and the price of a bond will change. If the curve steepens, then the spread between the long- and short-term interest rates increases which means long-term bond prices decrease relative to short-term bond prices.

Management Risk. The Fund’s investment strategies may not result in an increase in the value of your investment in the Fund or in overall performance equal to other similar investment vehicles having similar investment strategies to those of the Fund. The Adviser determines the intrinsic value of the securities the Fund holds and its assessment may be incorrect, which may result in a decline in the value of Fund shares and failure to achieve its investment objective. The Fund’s portfolio managers use qualitative analyses and/or models. Any imperfections or limitations in such analyses or models could affect the ability of the portfolio managers to implement strategies.

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Market Risk. Overall market risk may affect the value of individual instruments in which the Fund invests. The Fund is subject to the risk that the securities markets will move down, sometimes rapidly and unpredictably, based on overall economic conditions and other factors, which may negatively affect the Fund’s performance. Factors such as domestic and foreign (non-U.S.) economic growth and market conditions, real or perceived adverse economic or political conditions, military conflict, acts of terrorism, social unrest, natural disasters, recessions, inflation, changes in interest rate levels, supply chain disruptions, sanctions, the spread of infectious illness or other public health threats, lack of liquidity in the bond or other markets, volatility in securities markets or adverse investor sentiment and political events affect the securities markets. U.S. and foreign stock markets have experienced periods of substantial price volatility in the past and may do so again in the future. Securities markets also may experience long periods of decline in value. A change in financial condition or other event affecting a single issuer or market may adversely impact securities markets as a whole. Rates of inflation have recently risen. The value of assets or income from an investment may be worth less in the future as inflation decreases the value of money. As inflation increases, the real value of the Fund’s assets can decline as can the value of the Fund’s distributions. When the value of the Fund’s investments goes down, your investment in the Fund decreases in value and you could lose money.

Local, state, regional, national or global events such as war, acts of terrorism, the spread of infectious illness or other public health issues, recessions, or other events could have a significant impact on the Fund and its investments and could result in decreases to the Fund’s net asset value. Political, geopolitical, natural and other events, including war, terrorism, trade disputes, government shutdowns, market closures, natural and environmental disasters, epidemics, pandemics and other public health crises and related events and governments’ reactions to such events have led, and in the future may lead, to economic uncertainty, decreased economic activity, increased market volatility and other disruptive effects on U.S. and global economies and markets. Such events may have significant adverse direct or indirect effects on the Fund and its investments. For example, a widespread health crisis such as a global pandemic could cause substantial market volatility, exchange trading suspensions and closures, impact the ability to complete redemptions, and affect Fund performance. A health crisis may exacerbate other pre-existing political, social and economic risks. In addition, the increasing interconnectedness of markets around the world may result in many markets being affected by events or conditions in a single country or region or events affecting a single or small number of issuers.

Fixed Income Securities Risk. Fixed income securities are subject to interest rate risk, call risk, prepayment and extension risk, credit risk, duration risk, and liquidity risk, which are more fully described below. In addition, current market conditions may pose heightened risks for fixed income securities. When the Fund invests in fixed income securities or derivatives, the value of your investment in the Fund will fluctuate with changes in interest rates. Typically, a rise in interest rates causes a decline in the value of fixed income securities or derivatives owned by the Fund. In general, the market price of fixed income securities with longer maturities or durations will increase or decrease more in response to changes in interest rates than shorter-term securities. Risks associated with rising interest rates are heightened given that interest rates in the U.S. currently remain near historic lows, but have recently risen and could to rise further. Other risk factors include credit risk (the debtor may default) and prepayment risk (the debtor may pay its obligation early, reducing the amount of interest payments). These risks could affect the value of a particular investment by the Fund, possibly causing the Fund’s share price and total return to be reduced and fluctuate more than other types of investments. The fixed-income securities market can be susceptible to increases in volatility and decreases in liquidity. Moreover, new regulations applicable to and changing business practices of financial intermediaries that make markets in fixed income securities have resulted in less market making activity for certain fixed income securities, which may reduce the liquidity and may increase the volatility for such fixed income securities. Liquidity may decline unpredictably in response to overall economic conditions or credit tightening. For example, a general rise in interest rates may cause investors to move out of fixed income securities on a large scale, which could adversely affect the price and liquidity of fixed income securities and could also result in increased redemptions for the Fund. Heavy redemptions could cause the Fund to sell assets at inopportune times or at a loss or depressed value and could hurt the Fund’s performance. Duration risk arises when holding long duration and long maturity investments, which will magnify certain risks, including interest rate risk and credit risk. Effective duration estimates price changes for relatively small changes in rates. If rates rise significantly, effective duration may tend to understate the drop in a security’s price. If rates drop significantly, effective duration may tend to overstate the rise in a security’s price.

Collateralized Loan Obligations Risk. The Fund is subject to certain risks as a result of its investments in CLOs. The CLO’s performance is linked to the expertise of the CLO manager. One of the primary risks to investors of a CLO is the potential change in CLO manager, over which the Fund will have no control. The Fund may be adversely affected

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by new (or revised) laws or regulations that may be imposed by government regulators or self-regulatory organizations that supervise the financial markets. CLO debt securities are limited recourse obligations of their issuers. If income from the underlying loans is insufficient to make payments on the CLO debt, no other assets will be available for payment. In the event of an early redemption, holders of the CLO debt being redeemed will be repaid earlier than the stated maturity of the debt. The timing of redemptions may adversely affect the returns on CLO debt. The CLO manager may not find suitable assets in which to invest during the reinvestment period or to replace assets that the manager has determined are no longer suitable for investment. Additionally, there is a risk that the reinvestment period may terminate early if, for example, the CLO defaults on payments on the securities which it issues or if the CLO manager determines that it can no longer reinvest in underlying assets.

Active Trading Risk. A higher portfolio turnover due to active and frequent trading will result in higher transactional and brokerage costs that may result in lower investment returns.

Authorized Participant Concentration Risk. To the extent that authorized participants are unable or otherwise unavailable to proceed with creation and/or redemption orders and no other authorized participant is able to create or redeem in their place, shares may trade at a discount to net asset value (“NAV”) and may face delisting.

Bank Loan Risk. The Fund’s investments in secured and unsecured participations in bank loans and assignments of such loans may create substantial risk. In making investments in such loans, which are made by banks or other financial intermediaries to borrowers, the Fund will depend primarily upon the creditworthiness of the borrower for payment of principal and interest.

Cash Redemption Risk. The Fund expects to pay out its redemption proceeds principally in cash rather than through the in-kind delivery of portfolio securities. The Fund may be required to sell portfolio securities in order to obtain the cash needed to distribute redemption proceeds. This may cause the Fund to recognize a capital gain that it might not have incurred if it had made a redemption in-kind. As a result, the Fund may pay out higher annual capital gains distributions than if the in-kind redemption process was used. Only certain institutional investors known as authorized participants who have entered into an agreement with the Fund’s distributor may redeem shares from the Fund directly; all other investors buy and sell shares at market prices on the Exchange.

Common Stock Risk. The stock (i.e., equity) market can be volatile. Equity securities are susceptible to general market fluctuations and volatile increases and decreases in value as market confidence in and perceptions of their issuers change. The prices of stocks can fall rapidly in response to developments affecting a specific company or industry, or to changing economic, political or market conditions.

Convertible Securities Risk. The market value of a convertible security performs like that of a regular debt security; that is, if market interest rates rise, the value of a convertible security usually falls. In addition, convertible securities are subject to the risk that the issuer will not be able to pay interest or dividends when due, and their market value may change based on changes in the issuer’s credit rating or the market’s perception of the issuer’s creditworthiness. Since it derives a portion of its value from the common stock into which it may be converted, a convertible security is also subject to the same types of market and issuer risks that apply to the underlying common stock.

Counterparty Credit Risk. The Fund may enter into various types of derivative contracts. Many of these derivative contracts will be privately negotiated in the over-the-counter market. These contracts also involve exposure to credit risk, since contract performance depends in part on the financial condition of the counterparty. The stability and liquidity of many derivative transactions depends in large part on the creditworthiness of the parties to the transactions. If a counterparty to such a transaction defaults, exercising contractual rights may involve delays or costs for the Fund. Furthermore, there is a risk that a counterparty could become the subject of insolvency proceedings, and that the recovery of securities and other assets from such counterparty will be delayed or be of a value less than the value of the securities or assets originally entrusted to such counterparty. If a privately negotiated over-the-counter contract calls for payments by the Fund, the Fund must be prepared to make such payments when due. In addition, if a counterparty’s creditworthiness declines, the Fund may not receive payments owed under the contract, or such payments may be delayed under such circumstances and the value of agreements with such counterparty can be expected to decline, potentially resulting in losses to the Fund. The Adviser considers factors such as counterparty credit ratings and

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financial statements among others when determining whether a counterparty is creditworthy. In addition, the Fund may enter into swap agreements that involve a limited number of counterparties, which may increase the Fund’s exposure to counterparty risk.

Credit Risk. The risk that the Fund could lose money if the issuer or guarantor of a fixed income security is unwilling or unable to make timely payments to meet its contractual obligations on investments held by the Fund. Changes in the credit rating of a debt security held by the Fund could have a similar effect.

Credit Spread Risk. The risk that credit spreads (or the difference in yield between securities that is due to differences in their credit quality) may increase when the market expects lower-grade bonds to default more frequently. Widening credit spreads may quickly reduce the market values of lower-rated securities.

Currency Risk. The risk that foreign (non-U.S.) currencies will decline in value relative to the U.S. dollar and adversely affect the value of the Fund’s investments in foreign (non-U.S.) currencies or in securities that trade in, and receive revenues in, or in derivatives that provide exposure to, foreign (non-U.S.) currencies.

Cybersecurity Risk. There is risk to the Fund of an unauthorized breach and access to fund assets, customer data (including private shareholder information), or proprietary information, or the risk of an incident occurring that causes the Fund, the Adviser, custodian, transfer agent, distributor and other service providers and financial intermediaries (collectively, the “Service Providers”) to suffer data breaches, data corruption or lose operational functionality. Successful cyber-attacks or other cyber-failures or events affecting the Fund or its Service Providers may adversely impact the Fund or its shareholders.

Derivatives Risk. The derivative instruments in which the Fund or underlying funds may invest, including futures, options, repurchase agreements and other similar instruments, may be more volatile than other instruments and may be subject to unanticipated market movements, which are potentially unlimited. The use of derivative instruments involves risks different from, or possibly greater than, the risks associated with investing directly in securities and other traditional investments, and certain derivatives may create a risk of loss greater than the amount invested by the Fund or an underlying fund. These risks include (i) the risk that the counterparty to a derivative transaction may not fulfill its contractual obligations; (ii) risk of mispricing or improper valuation; and (iii) the risk that changes in the value of the derivative may not correlate perfectly with the underlying asset, rate or index. The risks associated with investments in derivatives also include liquidity, interest rate, market, credit and management risks. In addition, if a derivative is being used for hedging purposes there can be no assurance given that each derivative position will achieve a perfect correlation with the security or currency against which it is being hedged, or that a particular derivative position will be available when sought by the portfolio manager. Derivative prices are highly volatile and may fluctuate substantially during a short period of time. Such prices are influenced by numerous factors that affect the markets, including, but not limited to: changing supply and demand relationships; government programs and policies; and national and international political and economic events, changes in interest rates, and inflation and deflation. Trading derivative instruments involves risks different from, or possibly greater than, the risks associated with investing directly in securities and other more traditional investments, and certain derivatives may create a risk of loss greater than the amount invested.

Options Risk. Investments in options involve risks different from, or possibly greater than, the risks associated with investing directly in securities, including leverage risk, tracking risk, and, in the case of over-the-counter options, counterparty default risk. Option positions may expire worthless, exposing the Fund to potentially significant losses. If the Fund writes options, it may receive a premium that is small relative to the loss realized in the event of adverse changes in the value of the underlying instruments. When the Fund utilizes options combinations, such as spreads, straddles, collars, or other strategies, the premium received for writing the call option may offset, in part, the premium paid to purchase the corresponding put option; however, these strategies may limit upside gains while not fully protecting against downside risks, and the cost of implementing them may reduce the Fund’s overall returns. To the extent a Fund writes options on individual securities that it does not hold in its portfolio (i.e., “naked” options), it is subject to the risk that a liquid market for the underlying security may not exist at the time an option is exercised or when the Fund otherwise seeks to close out an option position. Naked call options, in particular, have speculative characteristics and the potential for unlimited loss.

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FLEX Options. FLEX Options are guaranteed for settlement by the OCC. Although unlikely, it is possible the OCC is unable to meet its settlement obligations, which could result in substantial loss for the Fund. FLEX Options may be less liquid than more traditional exchange-traded option contracts, meaning that the Fund may have more difficulty closing out certain FLEX Options positions at desired times and prices. Upon expiration, the FLEX Options held by the Fund will be exercisable at the strike price. Prior to the expiration date, the value of the FLEX Options will be determined based upon market quotations or using other recognized pricing methods. The value of the FLEX Options prior to the expiration date may vary due to factors other than the value of the underlying asset, such as interest rate changes, changing supply and demand, decreased liquidity of the FLEX Options, a change in the actual and perceived volatility of the stock market and underlying asset, and the remaining time to expiration.

ETF Structure Risks. The Fund is structured as an ETF and as a result is subject to special risks, including:

In times of market stress, such as what was experienced in 2020 with the COVID-19 pandemic, market makers may step away from their role in market making in shares of ETFs and in executing trades, which can lead to differences between the market value of Fund shares and the Fund’s NAV.

The market price for the Fund’s shares may deviate from the Fund’s NAV, particularly during times of market stress, with the result that investors may pay significantly more or significantly less for Fund shares than the Fund’s NAV, which is reflected in the bid and ask price for Fund shares or in the closing price.

When all or a portion of an ETF’s underlying securities trade in a market that is closed when the market for the Fund’s shares is open, there may be changes from the last quote of the closed market and the quote from the Fund’s domestic trading day, which could lead to differences between the market value of the Fund’s shares and the Fund’s NAV.

In stressed market conditions, the market for the Fund’s shares may become less liquid in response to the deteriorating liquidity of the Fund’s portfolio. This adverse effect on the liquidity of the Fund’s shares may, in turn, lead to differences between the market value of the Fund’s shares and the Fund’s NAV.

Fluctuation of Net Asset Value Risk. Unlike conventional ETFs, the Fund is not an index fund. The Fund is actively managed and does not seek to replicate the performance of a specified index. The NAV of the Fund’s shares will generally fluctuate with changes in the market value of the Fund’s holdings. The market prices of the shares will generally fluctuate in accordance with changes in NAV as well as the relative supply of and demand for the shares on the Exchange. The Adviser cannot predict whether the shares will trade below, at or above their NAV. Price differences may be due, in large part, to the fact that supply and demand forces at work in the secondary trading market for the shares will be closely related to, but not identical to, the same forces influencing the prices of the Fund’s holdings

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trading individually or in the aggregate at any point in time. Actively managed ETFs have a limited trading history and, therefore, there can be no assurance as to whether and/or the extent to which the Shares will trade at premiums or discounts to NAV.

Foreign (Non-U.S.) Investment Risk. Foreign (non-U.S.) securities present greater investment risks than investing in the securities of U.S. issuers and may experience more rapid and extreme changes in value than the securities of U.S. companies, due to less information about foreign (non-U.S.) companies in the form of reports and ratings than about U.S. issuers; different accounting, auditing and financial reporting requirements; smaller markets; nationalization; expropriation or confiscatory taxation; currency blockage; or political changes or diplomatic developments. Foreign (non-U.S.) securities may also be less liquid and more difficult to value than securities of U.S. issuers.

Foreign securities include direct investments in non-U.S. dollar-denominated securities traded primarily outside of the United States and dollar-denominated securities of foreign issuers. Foreign securities also include indirect investments such as American Depositary Receipts (“ADRs”), European Depositary Receipts (“EDRs”) and Global Depositary Receipts (“GDRs”). ADRs are U.S. dollar-denominated receipts representing shares of foreign-based corporations. ADRs are receipts that are traded in the United States and entitle the holder to all dividend and capital gain distributions that are paid out on the underlying foreign shares. EDRs and GDRs are receipts that often trade on foreign exchanges. They represent ownership in an underlying foreign or U.S. security and generally are denominated in a foreign currency. Foreign government obligations may include debt obligations of supranational entities, including international organizations (such as The International Bank for Reconstruction and Development, also known as the World Bank) and international banking institutions and related government agencies.

Futures Contract Risk. Futures contracts are subject to the same risks as the underlying investments that they represent, but also may involve risks different from, and possibly greater than, the risks associated with investing directly in the underlying investments. Investments in futures contracts involve additional costs, may be more volatile than other investments and may involve a small initial investment relative to the risk assumed. In connection with the Fund’s use of futures contracts, if the value of investments is incorrectly forecasted, the Fund might have been in a better position if the Fund had not entered into the contract. Because the futures utilized by the Fund are standardized and exchange-traded, where the exchange serves as the ultimate counterparty for all contracts, the primary credit risk on futures contracts is the creditworthiness of the exchange itself. Futures are also subject to market risk, interest rate risk (in the case of futures contracts relating to income producing securities) and index tracking risk (in the case of stock index futures).

Gap Risk. The Fund is subject to the risk that a stock price or derivative value will change dramatically from one level to another with no trading in between and/or before the Fund can exit the investment. Usually such movements occur when there are adverse news announcements, which can cause a stock price or derivative value to drop substantially from the previous day’s closing price. Trading halts may lead to gap risk.

Hedging Transactions Risk. The Adviser from time to time employs various hedging techniques. The success of the Fund’s hedging strategy will be subject to the Adviser’s ability to correctly assess the degree of correlation between the performance of the instruments used in the hedging strategy and the performance of the investments in the portfolio being hedged. Because the characteristics of many securities change as markets change or time passes, the success of the Fund’s hedging strategy will also be subject to the Adviser’s ability to continually recalculate, readjust, and execute hedges in an efficient and timely manner. For a variety of reasons, the Adviser may not seek to establish a perfect correlation between such hedging instruments and the portfolio holdings being hedged. Such imperfect correlation may prevent the Fund from achieving the intended hedge or expose the Fund to risk of loss. In addition, it is not possible to hedge fully or perfectly against any risk, and hedging entails its own costs.

High Yield Risk. Investment in or exposure to high yield (lower rated or below investment grade) debt instruments (also known as “junk bonds”) may involve greater levels of interest rate, credit, liquidity and valuation risk than for higher rated instruments. High yield debt instruments are considered predominantly speculative and are higher risk than investment grade instruments with respect to the issuer’s continuing ability to make principal and interest payments and, therefore, such instruments generally involve greater risk of default or price changes than higher rated debt instruments.

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Index Risk. If a derivative is linked to the performance of an index, it will be subject to the risks associated with changes in that index.

Investment Companies/Exchange-Traded Funds Risks. When the Fund invests in other investment companies (including closed-end funds and ETFs) it will bear additional expenses based on its pro rata share of the other investment company’s operating expenses, including management fees of unaffiliated funds, in addition to those paid by the Fund. The risk of owning shares of an investment company) generally reflects the risks of owning the underlying investments held by the investment company . The Fund may also incur brokerage costs when it purchases and sells shares of investment companies. The Fund may invest in inverse ETFs, which may result in increased volatility and will magnify the Fund’s losses or gains. During periods of market volatility, inverse ETFs may not perform as expected.

Issuer-Specific Risk. The value of a specific security can be more volatile than the market as a whole and may perform worse than the market as a whole.

Leveraging Risk. As part of the Fund’s principal investment strategy, the Fund may make investments in derivatives instruments such as forward and futures contracts. These derivative instruments provide the economic effect of financial leverage by creating additional investment exposure to the underlying instrument. Financial leverage will magnify, sometimes significantly, the Fund’s exposure to any increase or decrease in prices associated with a particular reference asset resulting in increased volatility in the value of the Fund’s portfolio. Certain derivatives require the Fund to make margin payments, a form of security deposit intended to protect against nonperformance of the derivative contract. The Fund may have to post additional margin if the value of the derivative position changes in a manner adverse to the Fund. The use of leverage may increase expenses and increase the impact of the Fund’s other risks and small changes in the value of the underlying instrument may produce disproportionate losses to the Fund. While such financial leverage has the potential to produce greater gains, it also may result in greater losses, which in some cases may cause the Fund to liquidate portfolio positions when it may not be advantageous to do so to satisfy its obligations to meet additional margin requirements or regulatory requirements, resulting in increased volatility of returns. Leverage, including borrowing, may cause the Fund to be more volatile than if the Fund had not been leveraged.

Liquidity Risk. Liquidity risk exists when particular investments of the Fund would be difficult to purchase or sell, possibly preventing the Fund from selling such illiquid securities at an advantageous time or price, or possibly requiring the Fund to dispose of other investments at unfavorable times or prices in order to satisfy its obligations. Liquidity risk may be magnified in an environment of rising interest rates or widening credit spreads in which investor redemptions from fixed income mutual funds may be higher than normal. In the past, in stressed markets, certain types of securities suffered periods of illiquidity if disfavored by the market. All of these risks may increase during periods of market turmoil, such as that experienced in 2020 with COVID-19 and could have a negative effect on the Fund’s performance.

Market Events Risk. There has been increased volatility, depressed valuations, decreased liquidity and heightened uncertainty in the financial markets during the past several years, including, what was experienced in 2020. These conditions may continue, recur, worsen or spread. The U.S. government and the Federal Reserve, as well as certain foreign governments and central banks, have taken steps to support financial markets, including by lowering interest rates to historically low levels. This and other government intervention may not work as intended, particularly if the efforts are perceived by investors as being unlikely to achieve the desired results. The U.S. government and the Federal Reserve have recently reduced market support activities, including by beginning to increase interest rates. Such reduction, including interest rate increases, could negatively affect financial markets generally, increase market volatility and reduce the value and liquidity of securities in which the Fund invests. Policy and legislative changes in the United States and in other countries may also contribute to decreased liquidity and increased volatility in the financial markets. The impact of these influences on the markets, and the practical implications for market participants, may not be fully known for some time.

MLP Risk. An investment in MLP units involves certain risks which differ from an investment in the securities of a corporation. Holders of MLP units have limited control and voting rights on matters affecting the partnership. In addition, there are certain tax risks associated with an investment in MLP units and conflicts of interest exist between common unit holders of MLPs and the general partner, including those arising from incentive distribution payments. Risks of MLPs include the following: a decrease in the production of natural gas, natural gas liquids, crude oil, coal or other energy commodities; or a decrease in the volume of such commodities available for transportation, mining,

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processing, storage or distribution, which may adversely impact the financial performance of MLPs or MLP-related securities. In addition, investing in MLPs involves certain risks related to investing in the underlying assets of the MLPs. The amount of cash that any MLP has available to pay its unit holders in the form of distributions/dividends depends on the amount of cash flow generated from such company’s operations. Cash flow from operations will vary from quarter to quarter and is largely dependent on factors affecting the MLP’s operations and factors affecting the energy, natural resources or real estate sectors in general. MLPs were adversely impacted by the reduced demand for oil and other energy commodities as a result of the slowdown in economic activity resulting from the spread of the COVID-19 pandemic, which triggered an unprecedented sell-off of energy pipeline and midstream companies in 2020. Recently, global oil prices have experienced significant volatility, including a period where an oil-price futures contract fell into negative territory for the first time in history. Reduced production and continued oil price volatility may adversely impact the value of the Fund’s investments in MLPs and energy infrastructure companies.

Mortgage-Backed and Asset-Backed Securities Risk. The risk of investing in mortgage-backed and other asset-backed securities, including prepayment risk, extension risk, interest rate risk, market risk and management risk. Mortgage-backed securities include caps and floors, inverse floaters, mortgage dollar rolls, private mortgage pass-through securities, resets and stripped mortgage securities. A systemic and persistent increase in interest rate volatility may also negatively impact a number of the Fund’s mortgage-backed and asset-backed securities holdings. The Fund will invest less than 25% of its net assets in asset-backed securities or mortgage-backed securities that are below-investment grade.

Odd Lot Pricing Risk. Bonds may be purchased and held as smaller sized bond positions known as “odd lots”. Pricing services generally value such securities based on bid prices for larger institutional sized bond positions known as “round lots”; and such round lot prices may reflect more favorable pricing than odd lot holdings. The Fund may purchase securities suitable for its investment strategies in odd lots. Special valuation considerations may apply with respect to the Fund’s odd-lot positions, as the Fund may receive different prices when it sells such positions than it would receive for sales of institutional round lot positions. The Fund may fair value a particular bond if the Adviser does not believe that the round lot value provided by the independent pricing service reflects fair value of the Fund’s holding. There can be no assurance that the Fund’s valuation procedures will result in pricing data that is completely congruent with prices that the Fund might obtain on the open market.

Portfolio Turnover Risk. The Fund may experience high portfolio turnover, including investments made on a shorter-term basis, which may lead to increased Fund expenses such as higher transactional and brokerage costs that may result in lower investment returns. High portfolio turnover may also result in higher short-term capital gains taxable to shareholders.

Prepayment and Extension Risk. Many types of fixed income securities are subject to prepayment risk. Prepayment occurs when the issuer of a fixed income security can repay principal prior to the security’s maturity. Fixed income securities subject to prepayment can offer less potential for gains during a declining interest rate environment and similar or greater potential for loss in a rising interest rate environment and accordingly, a decline in the Fund’s NAV. In addition, the potential impact of prepayment features on the price of a fixed income security can be difficult to predict and result in greater volatility. On the other hand, rising interest rates could cause prepayments of the obligations to decrease, extending the life of mortgage- and asset-backed securities with lower payment rates. This is known as extension risk and may increase the Fund’s sensitivity to rising rates and its potential for price declines.

Regulatory Risk. Changes in the laws or regulations of the United States or other countries, including any changes to applicable tax laws and regulations, could impair the ability of the Fund to achieve its investment objective and could increase the operating expenses of the Fund. For example, the SEC recently adopted regulations that will subject activities of funds trading certain derivative instruments to additional regulation, which may increase the operating expenses of the Fund and impair the Fund’s ability to achieve its investment objective.

Sector Risk. The risk that if the Fund invests a significant portion of its total assets in certain issuers within the same economic sector, an adverse economic, business or political development or natural or other event, including war, terrorism, natural and environmental disasters, epidemics, pandemics and other public health crises, affecting that region or sector may affect the value of the Fund’s investments more than if the Fund’s investments were not so focused. Economic, legislative or regulatory developments may occur that significantly affect an entire sector. This may cause the Fund’s NAV to fluctuate more than that of a fund that does not focus in a particular sector. While the

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Fund may not concentrate in any one industry, the Fund may invest without limitation in a particular sector. Also, a significant dislocation in one or more industries (e.g., financial, energy, etc.) could put pressure on bonds issued by those sectors.

Securities Lending Risk. The risks associated with lending portfolio securities, as with other extensions of secured credit, include, but are not limited to, possible delays in receiving additional collateral or in the recovery of the securities loaned, possible loss of rights in the collateral should the borrower fail financially, as well as risk of loss in the value of the collateral or the value of the investments made with the collateral. In certain market conditions, the portion of the Fund’s securities on loan may be significant and may magnify the risk of such a loss or delay.

Underlying Fund Risk. The Fund’s investment performance and its ability to achieve its investment objective are directly related to the performance of the underlying funds in which it invests. There can be no assurance that the Fund’s investments in the underlying funds will achieve their respective investment objectives. The Fund is subject to the risks of the underlying funds in direct proportion to the allocation of its assets among the underlying funds. The Fund will also bear its proportionate share of fees and expenses of the underlying funds, which may increase overall costs. Regulatory limits may restrict the Fund’s ability to invest in other funds.

U.S. Government Securities Risk. Treasury obligations may differ in their interest rates, maturities, times of issuance and other characteristics. Obligations of U.S. Government agencies and authorities are supported by varying degrees of credit but generally are not backed by the full faith and credit of the U.S. Government. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so. In addition, the value of U.S. Government securities may be affected by changes in the credit rating of the U.S. Government.

Valuation Risk. The sale price that the Fund could receive for a portfolio security may differ from the Fund’s valuation of the security, particularly for securities that trade in low volume or volatile markets or that are valued using a fair value methodology. In addition, the value of the securities in the Fund’s portfolio may change on days when shareholders will not be able to purchase or sell the Fund’s shares.

Variable or Floating Rate Securities Risk. Variable and floating rate securities generally are less sensitive to interest rate changes but may decline in value if their interest rates do not rise as much, or as quickly, as interest rates in general. Floating rate securities will not generally increase in value if interest rates decline.

Volatility Risk. The Fund’s investments may appreciate or decrease significantly in value over short periods of time. The value of an investment in the Fund’s portfolio may fluctuate due to factors that affect markets generally or that affect a particular industry or sector. The value of an investment in the Fund’s portfolio may also be more volatile than the market as a whole. This volatility may affect the Fund’s NAV per share, including by causing it to experience significant increases or declines in value over short periods of time. Events or financial circumstances affecting individual investments, industries or sectors may increase the volatility of the Fund.

Performance

The Fund is expected to commence operations on June 29, 2026, following the reorganization of the Universal Fixed Income Predecessor Fund, which is anticipated to take place as of the close of business on June 26, 2026 (the “Reorganization”). As a result of the Reorganization, the Fund has adopted the accounting and performance history of the Universal Fixed Income Predecessor Fund.

Performance results for periods prior to June 29, 2026, reflect the performance of the Universal Fixed Income Predecessor Fund before the commencement of the Fund’s operations. The bar chart and table below provide an indication of the risks of an investment in the Fund by showing changes in the performance of the Universal Fixed Income Predecessor Fund. The bar chart shows how the Universal Fixed Income Predecessor Fund’s performance has varied from year to year. The table shows the Universal Fixed Income Predecessor Fund’s average annual returns (before and after taxes) compared with those of the Bloomberg U.S. Aggregate Bond Index, the benchmark index selected for the Fund. The performance of any index does not reflect deductions for fees, expenses, or taxes. If the investment adviser to the Universal Fixed Income Predecessor Fund had not agreed to waive or reimburse certain Universal Fixed Income Predecessor Fund expenses during the period shown, if applicable, the Universal Fixed Income Predecessor Fund’s returns would have been less than those shown. All returns reflect reinvestment of all

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dividend and capital gain distributions. The Universal Fixed Income Predecessor Fund’s past performance, before and after taxes, is not necessarily an indication of how the Fund will perform in the future. The Universal Fixed Income Predecessor Fund commenced operations on September 18, 2018.

Performance Bar Chart for Calendar Years Ended December 31:

The Fund’s year to date return for the period ended September 30, 2025 was: 5.02%

Performance Table Average Annual Total Returns
(For the year ended December 31, 2024)

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown above, and after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

Investment Adviser. Horizon Investments, LLC.

Portfolio Managers. Peter van de Zilver, David Young, Cyrille Conseil, and Cameron Baxter, have responsibility for the day-to-day management of the Fund as portfolio managers. Messrs. van de Zilver, Young, Conseil, and Baxter have served as portfolio managers of the Fund, including while portfolio managers to the Universal Fixed Income Predecessor Fund, since 2018.

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Purchase and Sale of Fund Shares. Individual shares may only be purchased and sold on a national securities exchange through a broker-dealer. You can purchase and sell individual shares of the Fund throughout the trading day like any publicly traded security. The Fund’s shares are listed on Cboe BZX Exchange. The price of the Fund’s shares is based on market price and, because exchange-traded fund shares trade at market prices rather than NAV, shares may trade at a price greater than NAV (premium) or less than NAV (discount). The Fund issues and redeems shares on a continuous basis, at NAV, only in blocks of shares called Creation Units, principally in-kind, and only Authorized Participants (typically, broker-dealers) may purchase or redeem Creation Units. When buying or selling the Fund’s shares on Exchange, you may incur costs attributable to the difference between the highest price a buyer is willing to pay to purchase shares of the Fund (bid) and the lowest price a seller is willing to accept for shares of the Fund (ask) (the “bid-ask spread”). Recent information regarding the Fund’s NAV, market price, premiums and discounts, and bid-ask spreads is available at www.horizonmutualfunds.com.

Tax Information. The Universal Fixed Income Fund’s distributions are taxed as ordinary income or capital gains, unless you are investing through a tax-deferred arrangement, such as a 401(k) plan or an individual retirement account (“IRA”). Such tax-deferred arrangements may be taxed later upon withdrawal of monies from those arrangements.

Payments to Broker-Dealers and Other Financial Intermediaries. If you purchase the Universal Fixed Income Fund through a broker-dealer or other financial intermediary (such as a bank), the Universal Fixed Income 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 Universal Fixed Income Fund over another investment. Ask your salesperson or visit your financial intermediary’s website for more information.

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