# EDGAR Filing Document

**Accession Number:** 0001517936
**File Stem:** 0001445546-23-001701
**Filing Date:** 2023-3
**Character Count:** 52154
**Document Hash:** 33519eb7ba1d3da88290e6db68fff707
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001445546-23-001701.hdr.sgml**: 20230301

**ACCESSION NUMBER**: 0001445546-23-001701

**CONFORMED SUBMISSION TYPE**: 497K

**PUBLIC DOCUMENT COUNT**: 3

**FILED AS OF DATE**: 20230301

**DATE AS OF CHANGE**: 20230301

**EFFECTIVENESS DATE**: 20230301

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** FIRST TRUST EXCHANGE-TRADED FUND IV
- **CENTRAL INDEX KEY:** 0001517936
- **IRS NUMBER:** 000000000
- **STATE OF INCORPORATION:** MA

**FILING VALUES:**
- **FORM TYPE:** 497K
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-174332
- **FILM NUMBER:** 23690339

**BUSINESS ADDRESS:**
- **STREET 1:** 120 EAST LIBERTY DRIVE, SUITE 400
- **CITY:** WHEATON
- **STATE:** IL
- **ZIP:** 60187
- **BUSINESS PHONE:** 630-765-8000

**MAIL ADDRESS:**
- **STREET 1:** 120 EAST LIBERTY DRIVE, SUITE 400
- **CITY:** WHEATON
- **STATE:** IL
- **ZIP:** 60187

## Series and Classes Contracts Data

### First Trust Senior Loan Fund (Series ID: S000034146)

| Class ID   | Class Name                   | Ticker Symbol   |
|:---|:---|:---|
| C000105232 | First Trust Senior Loan Fund | FTSL            |

Rule 497(k)

File No. 333-174332

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

First Trust <br>Exchange-Traded Fund IV<br>

![](img989dc2851.gif)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

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SUMMARY PROSPECTUS

First Trust Senior Loan Fund <br>

Ticker Symbol: FTSL <br> Exchange: The Nasdaq Stock Market LLC

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 statutory prospectus and other information about the Fund, including the statement of additional information and most recent reports to shareholders, online at www.ftportfolios.com/retail/ETF/ETFfundnews.aspx?Ticker=FTSL. You can also get this information at no cost by calling (800) 621-1675 or by sending an e-mail request to info@ftportfolios.com. The Fund's prospectus and statement of additional information, both dated March 1, 2023, are all incorporated by reference into this Summary Prospectus.

March 1, 2023

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**Investment Objectives**

The First Trust Senior Loan Fund's (the "*Fund*") primary investment objective is to provide high current income. The Fund's secondary investment objective is the preservation of capital.

**Fees and Expenses of the Fund**

The following table describes the fees and expenses you may pay if you buy, hold and sell shares of the Fund. **Investors may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below.**

**Shareholder Fees** <br>(fees paid directly from your investment)

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)<br>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

**Annual Fund Operating Expenses** <br>(expenses that you pay each year as a percentage of the value of your investment)

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| | |
|:---|:---|
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Management Fees<sup>(1)</sup> <br>| 0.85% |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Distribution and Service (12b-1) Fees | 0.00% |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Other Expenses | 0.00% |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Acquired Fund Fees and Expenses | 0.01% |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Total Annual Fund Operating Expenses | 0.86% |

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*(1)* *As of the date of the prospectus, as approved by the Trust's Board of Trustees, the management fee paid to First Trust Advisors L.P., the Fund's investment advisor, will be reduced to 0.82875% based on the current level of Fund net assets. The management fee could be further reduced, or increased up to the amount in the table above, based on changes in the level of Fund net assets ("breakpoints"). See the Fund's Statement of Additional Information for more information on the breakpoints.*

***Example***

The example below is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then hold or 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 Fund's operating expenses remain at current levels. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

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| | | | |
|:---|:---|:---|:---|
| **1 Year** | **3 Years** | **5 Years** | **10 Years** |
| $88 | $274 | $477 | $1061 |

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**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 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 Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 63% of the average value of its portfolio.

**Principal Investment Strategies**

Under normal market conditions, the Fund invests at least 80% of its net assets (including investment borrowings) in first lien senior floating rate bank loans (*"Senior Loans"*).

A Senior Loan is an advance or commitment of funds made by one or more banks or similar financial institutions to one or more corporations, partnerships or other business entities and typically pays interest at a floating or adjusting rate that is determined periodically at a designated premium above a base lending rate, such as the London Interbank Offered Rate (*"LIBOR"*), the Secured Overnight Financing Rate (*"SOFR"*), a similar reference rate, or the prime rate offered by one or more major U.S. banks. A Senior Loan is considered senior to all other unsecured claims against the borrower, senior to or equal with all other secured claims, meaning that in the event of a bankruptcy of the borrower the Senior Loan, together with other first lien claims, is entitled to be the first to be repaid out of proceeds of the assets securing the loans, before other existing unsecured claims or interests receive repayment. However, in bankruptcy proceedings, there may be other claims, such as taxes or additional advances that take precedence.

The Fund may invest significantly in "covenant-lite" loans, which are loans issued with fewer restrictions on collateral, payment terms and level of income. Traditional loans generally have protective covenants built into the contract to protect the lender, including financial maintenance tests that measure the debt-service capabilities of the borrower; however, covenant-lite loans lack many of these lender protection provisions. Covenant-lite loans carry more risk than traditional loans and allow borrowers to engage in activities that would

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be difficult or impossible under a traditional loan agreement. The lack of traditional lender protection provisions contained in covenant-lite loans may impact recovery values and/or trading levels in the future.

The Fund invests in Senior Loans made predominantly to businesses operating in North America, but may also invest in Senior Loans made to businesses operating outside of North America. The Fund may invest in Senior Loans directly, either from the borrower as part of a primary issuance or in the secondary market through assignments of portions of Senior Loans from third parties, or participations in Senior Loans, which are contractual relationships with an existing lender in a loan facility whereby the Fund purchases the right to receive principal and interest payments on a loan but the existing lender remains the record holder of the loan. The Senior Loans included in the Fund's portfolio often maintain a duration of less than 90 days; however, the inclusion of LIBOR or SOFR floors on certain Senior Loans or other factors may cause interest rate duration to be longer than 90 days.

When identifying prospective investment opportunities in Senior Loans, First Trust Advisors L.P., the Fund's investment advisor, currently intends to invest primarily in Senior Loans that are below investment grade quality at the time of investment, and relies on fundamental credit analysis in an effort to attempt to minimize the loss of the Fund's capital and to select assets that provide attractive relative value. Securities rated below investment grade, commonly referred to as *"junk"* or *"high yield"* securities, include securities that are rated Ba1/BB+/BB+ or below by Moody's Investors Service, Inc. (*"Moody's"*), Fitch Inc., or S&P Global Ratings (*"S&P"*), respectively. The Fund may invest in securities of any rating. The Fund may also invest in unrated securities deemed by the investment advisor to be of comparable quality to those securities rated below investment grade.

The Fund may also invest up to 20% of its net assets in (1) non-Senior Loan debt securities, which may be fixed-rate or floating-rate income-producing securities (including, without limitation, U.S. government debt securities and corporate debt securities), (2) warrants, U.S. and non-U.S. equity and equity-like positions and interests and other securities issued by or with respect to a borrower or its affiliates, and/or (3) securities of other investment companies. In addition, the Fund may invest up to 15% of its net assets in Senior Loans and/or other floating rate loans that are distressed or in default. The Fund may also invest in companies with various market capitalizations.

The Fund's investment advisor combines a fundamental credit selection process with relative value analysis and top-down macroeconomic perspectives when selecting investment opportunities. The Fund's investment advisor believes that an evolving investment environment offers varying degrees of investment risk opportunities in the bank loan, high yield and other fixed income instrument markets. To capitalize on attractive investments and effectively manage potential risk, the Fund's investment advisor believes that the combination of thorough and continuous credit analysis, market evaluation, diversification and the ability to reallocate investments is critical to achieving higher risk-adjusted returns.

As of January 31, 2023, the Fund had significant investments in information technology companies, although this may change from time to time. To the extent the Fund invests a significant portion of its assets in a given jurisdiction or investment sector, the Fund may be exposed to the risks associated with that jurisdiction or investment sector.

**Principal Risks**

You could lose money by investing in the Fund. An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency. There can be no assurance that the Fund's investment objectives will be achieved. The order of the below risk factors does not indicate the significance of any particular risk factor.

**AUTHORIZED PARTICIPANT CONCENTRATION RISK.** Only an authorized participant may engage in creation or redemption transactions directly with the Fund. A limited number of institutions act as authorized participants for the Fund. To the extent that these institutions exit the business or are unable to proceed with creation and/or redemption orders and no other authorized participant steps forward to create or redeem, the Fund's shares may trade at a premium or discount (the difference between the market price of the Fund's shares and the Fund's net asset value) and possibly face delisting and the bid/ask spread (the difference between the price that someone is willing to pay for shares of the Fund at a specific point in time versus the price at which someone is willing to sell) on the Fund's shares may widen.

**BANK LOANS RISK.** Investments in bank loans are subject to the same risks as investments in other types of debt securities, including credit risk, interest rate risk, liquidity risk and valuation risk that may be heightened because of the limited public information available regarding bank loans and because loan borrowers may be leveraged and tend to be more adversely affected by changes in market or economic conditions. If the Fund holds a bank loan through another financial institution or relies on a financial institution to administer the loan, its receipt of principal and interest on the loan may be subject to the credit risk of that financial institution. It is possible that any collateral securing a loan may be insufficient or unavailable to the Fund, particularly for second lien loans or other junior or subordinated loans held by the Fund; provided, however, that some loans are not secured by any collateral. The Fund's rights to collateral also may be limited by bankruptcy or insolvency laws. Additionally, there is no central clearinghouse for loan trades and the loan market has not established enforceable settlement standards or remedies for failure to settle. As such, the secondary market for bank loans may be subject to irregular trading activity, wide bid/ask spreads and extended trade settlement periods (in some cases longer than 7 days) which may cause the Fund to be unable to realize the full value of its investment. In addition, bank loans are generally not registered with the Securities and Exchange Commission under the Securities Act of 1933, as amended, and may not be considered "securities," and the Fund may not be entitled to rely on the anti-fraud protections of the federal securities laws.

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**CALL RISK.** Some debt securities may be redeemed, or "called," at the option of the issuer before their stated maturity date. In general, an issuer will call its debt securities if they can be refinanced by issuing new debt securities which bear a lower interest rate. The Fund is subject to the possibility that during periods of falling interest rates an issuer will call its high yielding debt securities. The Fund would then be forced to invest the proceeds at lower interest rates, likely resulting in a decline in the Fund's income.

**CASH TRANSACTIONS RISK.** The Fund will effect some or all of its creations and redemptions for cash rather than in-kind. As a result, an investment in the Fund may be less tax-efficient than an investment in an ETF that effects all of its creations and redemptions in-kind. Because the Fund may effect redemptions for cash, it may be required to sell portfolio securities in order to obtain the cash needed to distribute redemption proceeds. A sale of portfolio securities may result in capital gains or losses and may also result in higher brokerage costs.

**COVENANT-LITE LOANS RISK.** Substantially all of the senior loans in which the Fund invests are expected to be covenant-lite loans. Covenant-lite loans contain fewer maintenance covenants than traditional loans, or no maintenance covenants at all, and may not include terms that allow the lender to monitor the financial performance of the borrower and declare a default if certain criteria are breached. This may hinder the Fund's ability to reprice credit risk associated with the borrower and reduce the Fund's ability to restructure a problematic loan and mitigate potential loss. As a result, the Fund's exposure to losses on such investments is increased, especially during a downturn in the credit cycle.

**CREDIT RATING AGENCY RISK.** Credit ratings are determined by credit rating agencies such as S&P Global Ratings, Moody's Investors Services, Inc. and Fitch Inc., and are only the opinions of such entities. Ratings assigned by a rating agency are not absolute standards of credit quality and do not evaluate market risk or the liquidity of securities. Any shortcomings or inefficiencies in credit rating agencies' processes for determining credit ratings may adversely affect the credit ratings of securities held by the Fund and, as a result, may adversely affect those securities' perceived or actual credit risk.

**CREDIT RISK.** An issuer or other obligated party of a debt security may be unable or unwilling to make dividend, interest and/or principal payments when due. In addition, the value of a debt security may decline because of concerns about the issuer's ability or unwillingness to make such payments.

**CYBER SECURITY RISK.** The Fund is susceptible to operational risks through breaches in cyber security. A breach in cyber security refers to both intentional and unintentional events that may cause the Fund to lose proprietary information, suffer data corruption or lose operational capacity. Such events could cause the Fund to incur regulatory penalties, reputational damage, additional compliance costs associated with corrective measures and/or financial loss. Cyber security breaches may involve unauthorized access to the Fund's digital information systems through "hacking" or malicious software coding but may also result from outside attacks such as denial-of-service attacks through efforts to make network services unavailable to intended users. In addition, cyber security breaches of the issuers of securities in which the Fund invests or the Fund's third-party service providers, such as its administrator, transfer agent, custodian, or sub-advisor, as applicable, can also subject the Fund to many of the same risks associated with direct cyber security breaches. Although the Fund has established risk management systems designed to reduce the risks associated with cyber security, there is no guarantee that such efforts will succeed, especially because the Fund does not directly control the cyber security systems of issuers or third-party service providers.

**DEBT SECURITIES RISK.** Investments in debt securities subject the holder to the credit risk of the issuer. Credit risk refers to the possibility that the issuer or other obligor of a security will not be able or willing to make payments of interest and principal when due. Generally, the value of debt securities will change inversely with changes in interest rates. To the extent that interest rates rise, certain underlying obligations may be paid off substantially slower than originally anticipated and the value of those securities may fall sharply. During periods of falling interest rates, the income received by the Fund may decline. If the principal on a debt security is prepaid before expected, the prepayments of principal may have to be reinvested in obligations paying interest at lower rates. Debt securities generally do not trade on a securities exchange making them generally less liquid and more difficult to value than common stock.

**DEFAULTED SECURITIES RISK.** Defaulted securities pose a greater risk that principal will not be repaid than non-defaulted securities. The reorganization or liquidation of an issuer of a defaulted security may result in the Fund losing its entire investment or being required to accept cash or securities with a value less than its original investment. It may also be difficult to obtain complete and accurate information regarding the true financial condition of the issuer of a defaulted security. Defaulted securities and any securities received in an exchange for such securities may be subject to restrictions on resale.

**DISTRESSED SECURITIES RISK.** Distressed debt securities are speculative and involve substantial risks in addition to the risks of investing in high-yield securities that are not in default. In some instances, the Fund will not receive interest payments from the distressed securities it holds, and there is a substantial risk that the principal will not be repaid. In any reorganization or liquidation proceeding related to a distressed debt security, the Fund may lose its entire investment in the security.

**EQUITY SECURITIES RISK.** The value of the Fund's shares will fluctuate with changes in the value of the equity securities in which it invests. Equity securities prices fluctuate for several reasons, including changes in investors' perceptions of the financial condition of an issuer or the general condition of the relevant equity market, such as market volatility, or when political or economic events affecting an issuer occur. Common stock prices may be particularly sensitive to rising interest rates, as the cost of capital rises and borrowing

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costs increase. Equity securities may decline significantly in price over short or extended periods of time, and such declines may occur in the equity market as a whole, or they may occur in only a particular country, company, industry or sector of the market.

**EXTENSION RISK.** Extension risk is the risk that, when interest rates rise, certain obligations will be paid off by the issuer (or other obligated party) more slowly than anticipated, causing the value of these debt securities to fall. Rising interest rates tend to extend the duration of debt securities, making their market value more sensitive to changes in interest rates. The value of longer-term debt securities generally changes more in response to changes in interest rates than shorter-term debt securities. As a result, in a period of rising interest rates, securities may exhibit additional volatility and may lose value.

**FLOATING RATE DEBT INSTRUMENTS RISK.** Investments in floating rate debt instruments are subject to the same risks as investments in other types of debt securities, including credit risk, interest rate risk, liquidity risk and valuation risk. Floating rate debt instruments include debt securities issued by corporate and governmental entities, as well as bank loans, mortgage-backed securities and asset-backed securities. Floating rate debt instruments are structured so that the security's coupon rate fluctuates based upon the level of a reference rate. Most commonly, the coupon rate of a floating rate debt instrument is set at the level of a widely followed interest rate, plus a fixed spread. As a result, the coupon on floating rate debt instrument will generally decline in a falling interest rate environment, causing the Fund to experience a reduction in the income it receives from the instrument. A floating rate debt instrument's coupon rate resets periodically according to its terms. Consequently, in a rising interest rate environment, floating rate debt instruments with coupon rates that reset infrequently may lag behind the changes in market interest rates. Floating rate debt instruments may also contain terms that impose a maximum coupon rate the issuer will pay, regardless of the level of the reference rate. To the extent the Fund invests in floating rate loans, such instruments may be subject to legal or contractual restrictions on resale, may trade infrequently, and their value may be impaired when the Fund needs to liquidate such securities. It is possible that the collateral securing a floating rate loan may be insufficient or unavailable to the Fund, and that the Fund's rights to collateral may be limited by bankruptcy or insolvency laws. Additionally, floating rate loans may not be considered "securities" under federal securities laws, and purchasers, such as the Fund, therefore may not be entitled to rely on the anti-fraud protections of the federal securities laws.

**HIGH YIELD SECURITIES RISK.** High yield securities, or "junk" bonds, are subject to greater market fluctuations, are less liquid and provide a greater risk of loss than investment grade securities, and therefore, are considered to be highly speculative. In general, high yield securities may have a greater risk of default than other types of securities and could cause income and principal losses for the Fund.

**INCOME RISK.** The Fund's income may decline when interest rates fall or if there are defaults in its portfolio. This decline can occur because the Fund may subsequently invest in lower-yielding securities as debt securities in its portfolio mature, are near maturity or are called, or the Fund otherwise needs to purchase additional debt securities.

**INDEX OR MODEL CONSTITUENT RISK.** The Fund may be a constituent of one or more indices or ETF models. As a result, the Fund may be included in one or more index-tracking exchange-traded funds or mutual funds. Being a component security of such a vehicle could greatly affect the trading activity involving the Fund's shares, the size of the Fund and the market volatility of the Fund. Inclusion in an index could increase demand for the Fund and removal from an index could result in outsized selling activity in a relatively short period of time. As a result, the Fund's net asset value could be negatively impacted and the Fund's market price may be below the Fund's net asset value during certain periods. In addition, index rebalances may potentially result in increased trading activity in the Fund's shares.

**INFLATION RISK.** Inflation risk is the risk that the value of assets or income from investments will be less in the future as inflation decreases the value of money. As inflation increases, the present value of the Fund's assets and distributions may decline.

**INFORMATION TECHNOLOGY COMPANIES RISK.** Information technology companies produce and provide hardware, software and information technology systems and services. These companies may be adversely affected by rapidly changing technologies, short product life cycles, fierce competition, aggressive pricing and reduced profit margins, the loss of patent, copyright and trademark protections, cyclical market patterns, evolving industry standards and frequent new product introductions. In addition, information technology companies are particularly vulnerable to federal, state and local government regulation, and competition and consolidation, both domestically and internationally, including competition from foreign competitors with lower production costs. Information technology companies also heavily rely on intellectual property rights and may be adversely affected by the loss or impairment of those rights.

**INTEREST RATE RISK.** Interest rate risk is the risk that the value of the debt securities in the Fund's portfolio will decline because of rising market interest rates. Interest rate risk is generally lower for shorter term debt securities and higher for longer-term debt securities. The Fund may be subject to a greater risk of rising interest rates than would normally be the case due to the current period of historically low rates and the effect of potential government fiscal policy initiatives and resulting market reaction to those initiatives. Duration is a reasonably accurate measure of a debt security's price sensitivity to changes in interest rates and a common measure of interest rate risk. Duration measures a debt security's expected life on a present value basis, taking into account the debt security's yield, interest payments and final maturity. In general, duration represents the expected percentage change in the value of a security for an immediate 1% change in interest rates. For example, the price of a debt security with a three-year duration would be expected to drop by

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approximately 3% in response to a 1% increase in interest rates. Therefore, prices of debt securities with shorter durations tend to be less sensitive to interest rate changes than debt securities with longer durations. As the value of a debt security changes over time, so will its duration.

**INVESTMENT COMPANIES RISK.** The Fund may invest in securities of other investment companies. As a shareholder in another investment company, the Fund will bear its ratable share of that investment company's expenses, and would remain subject to payment of the Fund's advisory and administrative fees with respect to assets so invested. Shareholders would therefore be subject to duplicative expenses to the extent the Fund invests in other investment companies. In addition, the Fund will incur brokerage costs when purchasing and selling shares of exchange-traded investment companies.

**LIBOR TRANSITION RISK.** The United Kingdom's Financial Conduct Authority (*"FCA"*), which regulates LIBOR, intends to cease making LIBOR available as a reference rate over a phase-out period that began on January 1, 2022. However, subsequent announcements by the FCA, the LIBOR administrators, and other regulators indicate that it is possible that the most widely used LIBOR rates may continue until mid-2023. The unavailability or replacement of LIBOR may affect the value, liquidity or return on certain Fund investments and may result in costs incurred in connection with closing out positions and entering into new trades. Any potential effects of the transition away from LIBOR on the Fund or on certain instruments in which the Fund invests can be difficult to ascertain, and they may vary depending on a variety of factors. In the United States, it is anticipated that in many instances the Secured Overnight Financing Rate (*"SOFR"*) will replace LIBOR as the reference rate for many of the floating rate instruments held by the Fund. There is no assurance that the composition or characteristics of SOFR, or any alternative reference rate, will be similar to or produce the same value or economic equivalence as LIBOR or that instruments using an alternative rate will have the same volume or liquidity. As a result, the transition process might lead to increased volatility and reduced liquidity in markets that currently rely on LIBOR to determine interest rates; a reduction in the value of some LIBOR-based investments; increased difficulty in borrowing or refinancing and diminished effectiveness of any applicable hedging strategies against instruments whose terms currently include LIBOR; and/or costs incurred in connection with temporary borrowings and closing out positions and entering into new agreements. Any such effects (as well as other unforeseen effects) of the transition away from LIBOR and the adoption of alternative reference rates could result in losses to the Fund.

**LIQUIDITY RISK.** The Fund may hold certain investments that may be subject to restrictions on resale, trade over-the-counter or in limited volume, or lack an active trading market. Accordingly, the Fund may not be able to sell or close out of such investments at favorable times or prices (or at all), or at the prices approximating those at which the Fund currently values them. Illiquid securities may trade at a discount from comparable, more liquid investments and may be subject to wide fluctuations in market value.

**MANAGEMENT RISK.** The Fund is subject to management risk because it is an actively managed portfolio. In managing the Fund's investment portfolio, the portfolio managers will apply investment techniques and risk analyses that may not produce the desired result. There can be no guarantee that the Fund will meet its investment objectives.

**MARKET MAKER RISK.** The Fund faces numerous market trading risks, including the potential lack of an active market for Fund shares due to a limited number of market markers. Decisions by market makers or authorized participants to reduce their role or step away from these activities in times of market stress could inhibit the effectiveness of the arbitrage process in maintaining the relationship between the underlying values of the Fund's portfolio securities and the Fund's market price. The Fund may rely on a small number of third-party market makers to provide a market for the purchase and sale of shares. Any trading halt or other problem relating to the trading activity of these market makers could result in a dramatic change in the spread between the Fund's net asset value and the price at which the Fund's shares are trading on the Exchange, which could result in a decrease in value of the Fund's shares. This reduced effectiveness could result in Fund shares trading at a discount to net asset value and also in greater than normal intraday bid-ask spreads for Fund shares.

**MARKET RISK.** Market risk is the risk that a particular security, or shares of the Fund in general, may fall in value. Securities are subject to market fluctuations caused by such factors as economic, political, regulatory or market developments, changes in interest rates and perceived trends in securities prices. Shares of the Fund could decline in value or underperform other investments. In addition, local, regional or global events such as war, acts of terrorism, spread of infectious diseases or other public health issues, recessions, or other events could have a significant negative impact on the Fund and its investments. For example, the coronavirus disease 2019 (COVID-19) global pandemic and the ensuing policies enacted by governments and central banks have caused and may continue to cause significant volatility and uncertainty in global financial markets, negatively impacting global growth prospects. While the U.S. has resumed "reasonably" normal business activity, many countries continue to impose lockdown measures. Additionally, there is no guarantee that vaccines will be effective against emerging variants of the disease. As this global pandemic illustrated, such events may affect certain geographic regions, countries, sectors and industries more significantly than others. These events also adversely affect the prices and liquidity of the Fund's portfolio securities or other instruments and could result in disruptions in the trading markets. Any of such circumstances could have a materially negative impact on the value of the Fund's shares and result in increased market volatility. During any such events, the Fund's shares may trade at increased premiums or discounts to their net asset value and the bid/ask spread on the Fund's shares may widen.

**OPERATIONAL RISK.** The Fund is subject to risks arising from various operational factors, including, but not limited to, human error, processing and communication errors, errors of the Fund's service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund relies on third-parties for a range of services, including custody. Any delay or

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failure relating to engaging or maintaining such service providers may affect the Fund's ability to meet its investment objective. Although the Fund and the Fund's investment advisor seek to reduce these operational risks through controls and procedures, there is no way to completely protect against such risks.

**PREMIUM/DISCOUNT RISK.** The market price of the Fund's shares will generally fluctuate in accordance with changes in the Fund's net asset value as well as the relative supply of and demand for shares on the Exchange. The Fund's investment advisor cannot predict whether shares will trade below, at or above their net asset value because the shares trade on the Exchange at market prices and not at net asset value. Price differences may be due, in large part, to the fact that supply and demand forces at work in the secondary trading market for shares will be closely related, but not identical, to the same forces influencing the prices of the holdings of the Fund trading individually or in the aggregate at any point in time. However, given that shares can only be purchased and redeemed in Creation Units, and only to and from broker-dealers and large institutional investors that have entered into participation agreements (unlike shares of closed-end funds, which frequently trade at appreciable discounts from, and sometimes at premiums to, their net asset value), the Fund's investment advisor believes that large discounts or premiums to the net asset value of shares should not be sustained. During stressed market conditions, the market for the Fund's shares may become less liquid in response to deteriorating liquidity in the market for the Fund's underlying portfolio holdings, which could in turn lead to differences between the market price of the Fund's shares and their net asset value and the bid/ask spread on the Fund's shares may widen.

**PREPAYMENT RISK.** Prepayment risk is the risk that the issuer of a debt security will repay principal prior to the scheduled maturity date. Debt securities allowing prepayment may offer less potential for gains during a period of declining interest rates, as the Fund may be required to reinvest the proceeds of any prepayment at lower interest rates. These factors may cause the value of an investment in the Fund to change.

**SENIOR LOAN RISK.** Senior loans represent debt obligations of sub-investment grade corporate borrowers, similar to high yield bonds; however, senior loans are different from traditional high yield bonds in that senior loans are typically senior to other obligations of the borrower and generally secured by a lien on all or some portion of the assets of the borrower. The senior loan market has seen a significant increase in loans with weaker lender protections including, but not limited to, limited financial maintenance covenants or, in some cases, no financial maintenance covenants (*i.e.*, "covenant-lite loans") that would typically be included in a traditional loan agreement and general weakening of other restrictive covenants applicable to the borrower such as limitations on incurrence of additional debt, restrictions on payments of junior debt or restrictions on dividends and distributions. Weaker lender protections such as the absence of financial maintenance covenants in a loan agreement and the inclusion of "borrower-favorable" terms may impact recovery values and/or trading levels of senior loans in the future. The absence of financial maintenance covenants in a loan agreement generally means that the lender may not be able to declare a default if financial performance deteriorates. This may hinder the Fund's ability to reprice credit risk associated with a particular borrower and reduce the Fund's ability to restructure a problematic loan and mitigate potential loss. As a result, the Fund's exposure to losses on investments in senior loans may be increased, especially during a downturn in the credit cycle or changes in market or economic conditions.

Senior loans are also subject to the same risks as investments in other types of debt securities, including credit risk, interest rate risk, liquidity risk and valuation risk that may be heightened because of the limited public information available regarding senior loans. If the Fund holds a senior loan through another financial institution or relies on a financial institution to administer the loan, its receipt of principal and interest on the loan may be subject to the credit risk of that financial institution. Although senior loans are generally secured by specific collateral, there can be no assurance that liquidation of such collateral would satisfy the borrower's obligation in the event of non-payment of scheduled interest or principal or that such collateral could be readily liquidated.

No active trading market may exist for certain senior loans, which may impair the ability of the Fund to realize full value in the event of the need to sell its position in a senior loan and which may make it difficult to accurately value senior loans. Lastly, senior loans may not be considered "securities," and the Fund may not be entitled to rely on the anti-fraud protections of the federal securities laws.

**SIGNIFICANT EXPOSURE RISK.** To the extent that the Fund invests a significant percentage of its assets in a single asset class or the securities of issuers within the same country, state, region, industry or sector, an adverse economic, business or political development may affect the value of the Fund's investments more than if the Fund were more broadly diversified. A significant exposure makes the Fund more susceptible to any single occurrence and may subject the Fund to greater market risk than a fund that is more broadly diversified.

**SMALLER COMPANIES RISK.** Small and/or mid capitalization companies may be more vulnerable to adverse general market or economic developments, and their securities may be less liquid and may experience greater price volatility than larger, more established companies as a result of several factors, including limited trading volumes, fewer products or financial resources, management inexperience and less publicly available information. Accordingly, such companies are generally subject to greater market risk than larger, more established companies.

**TRADING ISSUES RISK.** Trading in Fund shares on the Exchange may be halted due to market conditions or for reasons that, in the view of the Exchange, make trading in shares inadvisable. In addition, trading in Fund shares on the Exchange is subject to trading halts caused by extraordinary market volatility pursuant to the Exchange's "circuit breaker" rules. There can be no assurance that the requirements of the Exchange necessary to maintain the listing of the Fund will continue to be met or will remain unchanged. The

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Fund may have difficulty maintaining its listing on the Exchange in the event the Fund's assets are small, the Fund does not have enough shareholders, or if the Fund is unable to proceed with creation and/or redemption orders.

**U.S. GOVERNMENT SECURITIES RISK.** U.S. government securities are subject to interest rate risk but generally do not involve the credit risks associated with investments in other types of debt securities. As a result, the yields available from U.S. government securities are generally lower than the yields available from other debt securities. U.S. government securities are guaranteed only as to the timely payment of interest and the payment of principal when held to maturity. While securities issued or guaranteed by U.S. federal government agencies (such as Ginnie Mae) are backed by the full faith and credit of the U.S. Department of the Treasury, securities issued by government sponsored entities (such as Fannie Mae and Freddie Mac) are solely the obligation of the issuer and generally do not carry any guarantee from the U.S. government.

**VALUATION RISK.** The sale price the Fund could receive for a 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. Unlike publicly traded securities that trade on national securities exchanges, there is no central place or exchange for trading most debt securities. Debt securities generally trade on an "over-the-counter" market. Due to the lack of centralized information and trading, and variations in lot sizes of certain debt securities, the valuation of debt securities may carry more uncertainty and risk than that of publicly traded securities. Debt securities are commonly valued by third-party pricing services that utilize a range of market-based inputs and assumptions, including readily available market quotations obtained from broker-dealers making markets in such securities, cash flows and transactions for comparable instruments. However, because the available information is less reliable and more subjective, elements of judgment may play a greater role in valuation of debt securities than for other types of securities. Different pricing services may incorporate different assumptions and inputs into their valuation methodologies, potentially resulting in different values for the same securities. As a result, if the Advisor were to change its valuation policies, or if the Fund were to change pricing services, or if a pricing service were to change its valuation methodology, there could be a material impact, either positive or negative, on the Fund's net asset value. Additionally, pricing services generally price debt securities assuming orderly transactions of an institutional "round lot" size, but some trades may occur in smaller, "odd lot" sizes, often at lower prices than institutional round lot trades. There is no assurance that the Fund will be able to sell a portfolio security at the price established by the pricing service, which could result in a loss to the Fund. In addition, the value of the debt securities in the Fund's portfolio may change on days or during time periods when shareholders will not be able to purchase or sell the Fund's shares. Authorized Participants who purchase or redeem Fund shares on days when the Fund is holding fair-valued securities may receive fewer or more shares, or lower or higher redemption proceeds, than they would have received had the Fund not fair-valued securities or used a different valuation methodology. Net asset value calculation may also be impacted by operational risks arising from factors such as failures in systems and technology.

**WARRANTS AND RIGHTS RISK.** Warrants and rights do not carry with them the right to dividends or voting rights with respect to the securities that they entitle their holder to purchase, and they do not represent any rights in the assets of the issuer. As a result, warrants and rights may be considered more speculative than certain other types of investments. In addition, the value of a warrant or right does not necessarily change with the value of the underlying securities. The Fund could lose the value of a warrant or right if the right to subscribe to additional shares is not exercised prior to the warrant's or right's expiration date. The market for warrants and rights may be very limited and there may at times not be a liquid secondary market for warrants and rights.

**Annual Total Return**

The bar chart and table below illustrate the annual calendar year returns of the Fund based on net asset value as well as the average annual Fund returns. The bar chart and table provide an 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 total returns based on net asset value compared to those of a market index. See "Total Return Information" for additional performance information regarding the Fund. The Fund's performance information is accessible on the Fund's website at www.ftportfolios.com.

On January 3, 2023, the fair value methodology used to value the senior loan investments held by the Fund was changed. Prior to that date, the senior loans were valued using the bid side price provided by a pricing service. After such date, the senior loans were valued using the midpoint between the bid and ask price provided by a pricing service. The change in the Fund's fair value methodology on January 3, 2023, resulted in a one-time increase in the Fund's net asset value of approximately $0.159 per share on that date, which represented a positive impact on the Fund's performance of 0.35%.

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**First Trust Senior Loan Fund** <br>**Calendar Year Total Returns as of 12/31**![](ftsl_dgf.jpg)

During the periods shown in the chart above:

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| | | | |
|:---|:---|:---|:---|
| **Best Quarter** |  | **Worst Quarter** |  |
| 6.43% | June 30, 2020 | -9.65% | March 31, 2020 |

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The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

All after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of any state or local tax. Returns after taxes on distributions reflect the taxed return on the payment of dividends and capital gains. Returns after taxes on distributions and sale of shares assume you sold your shares at period end, and, therefore, are also adjusted for any capital gains or losses incurred. Returns for the market index do not include expenses, which are deducted from Fund returns, or taxes.

Your own actual after-tax returns will depend on your specific tax situation and may differ from what is shown here. After-tax returns are not relevant to investors who hold Fund shares in tax-deferred accounts such as individual retirement accounts (*IRAs*) or employee-sponsored retirement plans.

**Average Annual Total Returns for the Periods Ended December 31, 2022** 

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| | | | | |
|:---|:---|:---|:---|:---|
|  | **1 Year** | **5 Years** | &nbsp;&nbsp;&nbsp; **Since**<br> **Inception**<br>| &nbsp;&nbsp;&nbsp; **Inception**<br> **Date**<br>|
| Return Before Taxes  | -1.51% | 2.67% | 2.80% | 5/1/2013 |
| Return After Taxes on Distributions  | -3.36% | 1.01% | 1.14% |  |
| Return After Taxes on Distributions and Sale of Shares  | -0.90% | 1.33% | 1.39% |  |
| &nbsp;&nbsp;&nbsp;&nbsp; Morningstar<sup>®</sup> LSTA<sup>®</sup> US Leveraged Loan Index<sup>(1)</sup> (reflects no deduction for <br> fees, expenses or taxes)<br>| -0.63% | 3.31% | 3.50% |  |

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*(1)* *Formerly, S&P/LSTA Leveraged Loan Index.*

**Management**

***Investment Advisor***

First Trust Advisors L.P. (*"First Trust"* or the *"Advisor"*)

***Portfolio Managers***

The following persons serve as portfolio managers of the Fund.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• William Housey, CFA, Managing Director of Fixed Income and Senior Portfolio Manager of First Trust

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Jeffrey Scott, CFA, Senior Vice President and Portfolio Manager of First Trust

The portfolio managers are primarily and jointly responsible for the day-to-day management of the Fund. Mr. Housey has served as a part of the portfolio management team of the Fund since 2013, while Mr. Scott has served as part of the portfolio management team of the Fund since 2020.

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**Purchase and Sale of Fund Shares**

The Fund issues and redeems shares on a continuous basis, at net asset value, only in large blocks of shares called "Creation Units." Individual shares of the Fund may only be purchased and sold on the secondary market through a broker-dealer. Since shares of the Fund trade on securities exchanges in the secondary market at their market price rather than their net asset value, the Fund's shares may trade at a price greater than (premium) or less than (discount) the Fund's net asset value. An investor 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) when buying or selling shares in the secondary market (the *"bid-ask spread"*). Recent information, including the Fund's net asset value, market price, premiums and discounts, bid-ask spreads and the median bid-ask spread for the Fund's most recent fiscal year, is available online at https://www.ftportfolios.com/Retail/etf/home.aspx.

**Tax Information**

The Fund's distributions are taxable and will generally be taxed as ordinary income or capital gains. Distributions on shares held in a tax-deferred account, while not immediately taxable, will be subject to tax when the shares are no longer held in a tax-deferred account.

**Payments to Broker-Dealers and Other Financial Intermediaries**

If you purchase shares of the Fund through a broker-dealer, registered investment adviser, bank or other financial intermediary (collectively, "intermediaries"), First Trust and First Trust Portfolios L.P., the Fund's distributor, 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.

*You can find the Fund's statutory prospectus and other information about the Fund, including the statement of additional information and most recent reports to shareholders, online at www.ftportfolios.com/retail/ETF/ETFfundnews.aspx?Ticker=FTSL.*

FTSLSP030123

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