Summary Prospectus by Investment Company - Form 497K

Summary Prospectus April 29, 2024

Class II

Before you invest, you may want to review the Fund's Prospectus, which contains information about the Fund and its risks. This Summary Prospectus is intended for use in connection with variable insurance contracts, and is not intended for use by other investors. The Fund's Prospectus and Statement of Additional Information, each dated April 29, 2024 (as may be supplemented or revised), are incorporated by reference into this Summary Prospectus. For free paper or electronic copies of the Fund's Prospectus and other information about the Fund, go to nationwide.com/mutualfundsnvit, email a request to [email protected] or call 800-848-0920, or ask any variable insurance contract provider who offers shares of the Fund as an underlying investment option in its products.

Objective

The NVIT American Funds Bond Fund (the "Fund" or "Feeder Fund") seeks to provide as high a level of current income as is consistent with the preservation of capital.

Fees and Expenses(1)

This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the Fund. Sales charges and other expenses that may be imposed by variable insurance contracts are not included. If these charges were reflected, the expenses listed below would be higher. See the variable insurance contract prospectus, which may impose sales charges and other additional contract-level expenses.

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

	Class II Shares
Management Fees(2)	0.35%
Distribution and/or Service (12b-1) Fees	0.25%
Other Expenses	0.57%
Total Annual Fund Operating Expenses	1.17%
Fee Waiver/Expense Reimbursement(3)	(0.30)%
Total Annual Fund Operating Expenses After Fee Waiver/Expense Reimbursement	0.87%

(1)The Fees and Expenses table and the Example below reflect the aggregate expenses of both the Master Bond Fund (as described in the Principal Investment Strategies section below) and the Fund.

(2)The investment adviser to the Master Bond Fund is currently waiving a portion of its management fee equal to 0.15% of the Master Bond Fund's net assets. This waiver will be in effect through at least May 1, 2025. The waiver may only be modified or terminated with the approval of the Master Bond Fund's board of trustees.

(3)Nationwide Fund Management LLC, the Fund's master-feeder service provider, has entered into a contractual agreement with Nationwide Variable Insurance Trust under which it will waive 0.15% of the fees that it charges for providing the Fund with those non-investment advisory services typically provided by a fund's adviser as ancillary services to its investment advisory services, which include, but are not limited to, providing necessary information to the Board of Trustees, monitoring the ongoing investment performance of the Fund, coordinating financial statements with those of the Fund, and distributing applicable documents and materials to Fund shareholders. This agreement may be changed or eliminated only with the consent of the Board of Trustees. This agreement currently runs until at least May 1, 2025 and may be renewed at that time.

Example

This Example is intended to help you to compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example, however, does not include charges that are imposed by variable insurance contracts. If these charges were reflected, the expenses listed below would be higher.

This Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those time periods. It assumes a 5% return each year and no change in expenses, and any expense limitation or fee waivers

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that may apply for the periods indicated above under "Fees and Expenses." Although your actual costs may be higher or lower, based on these assumptions your costs would be:

	1 Year	3 Years	5 Years	10 Years
Class II Shares	$89	$342	$615	$1,394

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. These costs, which are not reflected in Annual Fund Operating Expenses or in the Example, affect the Fund's performance. As set forth in the Financial Highlights of the Fund, during the most recent fiscal year, the Fund's portfolio turnover rate was 9.58% of the average value of its portfolio. As set forth in the Financial Highlights of the Master Fund (as defined below), during the most recent fiscal year, the Master Fund's portfolio turnover rate was 545% of the average value of its portfolio.

Principal Investment Strategies

The Fund invests all of its assets in the Class 1 shares of The Bond Fund of America (the "Master Bond Fund"), a series of American Funds Insurance Series®, a registered open-end investment company. In pursuing its investment objective, the Master Bond Fund seeks to maximize your level of current income and preserve your capital by investing primarily in bonds. Normally, the Master Bond Fund invests at least 80% of its net assets in bonds and other debt securities which may be represented by derivatives. The Master Bond Fund invests at least 60% of its net assets in debt securities (excluding derivatives) rated A3 or better or A- or better by Nationally Recognized Statistical Ratings Organizations ("NRSROs") designated by the Master Bond Fund's investment adviser, or in debt securities that are unrated but determined to be of equivalent quality by the Master Bond Fund's investment adviser, and in government securities, money market instruments, cash or cash equivalents. The Master Bond Fund may invest in debt securities and mortgage-backed securities issued by government-sponsored entities and federal agencies and instrumentalities that are not backed by the full faith and credit of the U.S. government. The Master Bond Fund may invest in inflation-linked bonds issued by U.S. and non-U.S. governments, their agencies or instrumentalities, and corporations. Inflation-linked bonds are structured to protect against inflation by linking the bond's principal and interest payments to an inflation index, such as the Consumer Price Index for Urban Consumers, so that principal and interest adjust to reflect changes in the index.

The Master Bond Fund may use futures contracts and swaps, which are types of derivatives. A derivative is a financial contract, the value of which is based on the value of an underlying financial asset (such as a stock, bond or currency), a reference rate or market index.

The Master Bond Fund may invest up to 5% of its assets in debt securities rated Ba1 or below and BB+ or below by NRSROs designated by the Master Bond Fund's investment adviser, or in debt securities that are unrated but determined to be of equivalent quality by the Master Bond Fund's investment adviser. Securities rated Ba1 or below and BB+ or below are sometimes referred to as "junk bonds."

The Master Bond Fund's investment adviser uses a system of multiple portfolio managers in managing the Master Bond Fund's assets. Under this approach, the portfolio of the Master Bond Fund is divided into segments managed by individual portfolio managers.

The Master Bond Fund relies on the professional judgment of its investment adviser to make decisions about the Master Bond Fund's portfolio investments. The basic investment philosophy of the Master Bond Fund's investment adviser is to seek to invest in attractively priced securities that, in its opinion, represent good long-term investment opportunities. Securities may be sold when the Master Bond Fund's investment adviser believes that they no longer represent relatively attractive investment opportunities. The Master Bond Fund may engage in active and frequent trading of securities. The Master Bond Fund's investment adviser may consider environmental, social and governance ("ESG") factors that, depending on the facts and circumstances, are material to the value of an issuer or instrument.

Principal Risks

The Fund cannot guarantee that it will achieve its investment objective.

As with any fund, the value of the Fund's investments-and therefore, the value of Fund shares-may fluctuate through its investment in the Master Bond Fund. These changes may occur because of:

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Interest rate risk - generally, when interest rates go up, the value of fixed-income securities goes down. Prices of longer-term securities generally change more in response to interest rate changes than prices of shorter-term securities. To the extent the Fund invests a substantial portion of its assets in fixed-income securities with longer-term maturities, rising interest rates are more likely to cause periods of increased volatility and redemptions, and will cause the value of the Fund's investments to decline significantly. Falling interest rates may cause an issuer to redeem, call or refinance a debt security before its stated maturity, which may result in the fund failing to recoup the full amount of its initial investment and having to reinvest the proceeds in lower yielding securities. Recently, the Federal Reserve Board has raised interest rates after a period of historic lows, and may increase rates further. The interest earned on the Fund's investments in fixed-income securities may decline when prevailing interest rates fall. Declines in interest rates increase the likelihood that debt obligations will be pre-paid, which, in turn, increases these risks. Very low or negative interest rates will impact the yield of the Fund's investments in fixed-income securities and increase the risk that, if followed by rising interest rates, the Fund's performance will be negatively impacted. The Fund is subject to the risk that the income generated by its investments in fixed-income securities may not keep pace with inflation. Recent and potential future changes in government policy may affect interest rates.

The interest rate of fixed-rate securities is fixed at the time of purchase and does not fluctuate with general market conditions. Floating-rate securities have interest rates that vary with changes to a specific measure, such as the Treasury bill rate. Variable-rate securities have interest rates that change at preset times based on changes to the specific measure.

Market risk - the risk that one or more markets in which the Fund invests will go down in value, including the possibility that the markets will go down sharply and unpredictably. This occurs due to numerous factors, including interest rates, the outlook for corporate profits, the health of the national and world economies, and the fluctuation of other securities markets around the world. These risks may be magnified if certain social, political, economic and other conditions and events (such as natural disasters, epidemics and pandemics, terrorism, conflicts and social unrest) adversely interrupt the global economy.

Cash position risk - the Fund may hold significant positions in cash or money market instruments. A larger amount of such holdings will cause the Fund to miss investment opportunities presented during periods of rising market prices.

Credit risk - a bond issuer will default if it is unable to pay the interest or principal when due. If an issuer defaults, the Fund will lose money. This risk is particularly high for high-yield bonds and other securities rated below investment grade.

Changes in a bond issuer's credit rating or the market's perception of an issuer's creditworthiness also affect the market price of a bond.

Mortgage-backed and asset-backed securities risks - these securities generally are subject to the same types of risk that apply to other fixed-income securities, such as interest rate risk, credit risk, and prepayment and call risk. Mortgage-backed securities also are subject to extension risk, which is the risk that when interest rates rise, certain mortgage-backed securities will be paid in full by the issuer more slowly than anticipated. This can cause the market value of the security to fall because the market may view its interest rate as low for a longer-term investment. Through its investments in mortgage-backed securities, the Fund may have some exposure to subprime loans, as well as to the mortgage and credit markets generally. Subprime loans, which are loans made to borrowers with weakened credit histories, generally have higher default rates than loans that meet government underwriting requirements. The credit quality of most asset-backed securities depends primarily on the credit quality of the assets underlying such securities, how well the entity issuing the security is insulated from the credit risk of the originator or any other affiliated entities, and the amount and quality of any credit enhancement of the securities.

Convertible securities risk - the values of convertible securities typically fall when interest rates rise and increase when interest rates fall. The prices of convertible securities with longer maturities tend to be more volatile than those with shorter maturities. Value also tends to change whenever the market value of the underlying common or preferred stock fluctuates. The Fund will lose money if the issuer of a convertible security is unable to meet its financial obligations.

Derivatives risk - derivatives may be volatile and may involve significant risks. The underlying security, measure or other instrument on which a derivative is based, or the derivative itself, may not perform as expected. Normally derivatives involve leverage, which means that their use can magnify significantly the effect of price movements of the underlying securities or reference measures, disproportionately increasing the Fund's losses and reducing the Fund's opportunities for gains. Some derivatives have the potential for unlimited loss, including a loss that may be greater than the amount invested. They also present default risks if the counterparty to a derivatives contract fails to fulfill its obligations to the Fund. Certain derivatives held by the Fund may be illiquid, including non-exchange-traded or over-the-counter derivatives that are linked to illiquid instruments or illiquid markets, making it difficult to close out an unfavorable position. Derivatives also may be more difficult to purchase, sell or value than other instruments.

Futures - the prices of futures contracts typically are more volatile than those of stocks and bonds. Small movements in the values of the assets or measures of underlying futures contracts can cause disproportionately larger losses to the

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Fund. While futures may be more liquid than other types of derivatives, they may experience periods when they are less liquid than stocks, bonds or other investments.

Swaps - using swaps can involve greater risks than if the Fund were to invest directly in the underlying securities or assets. Because swaps often involve leverage, their use can significantly magnify the effect of price movements of the underlying securities or reference measures, disproportionately increasing the Fund's losses and reducing the Fund's opportunities for gains. Currently there are few central exchanges or markets for swap contracts, and therefore they may be less liquid than exchange-traded instruments. If a swap counterparty fails to meet its obligations under the contract, the Fund will lose money.

Liquidity risk - when there is little or no active trading market for specific types of securities or instruments, it can become more difficult to sell the securities or instruments at or near their perceived value. An inability to sell a portfolio position can adversely affect the Fund's value or prevent the Master Bond Fund from being able to take advantage of other investment opportunities. Liquidity risk also includes the risk that the Master Bond Fund will experience significant net redemptions of its shares at a time when it cannot find willing buyers for its portfolio securities or instruments or can sell its portfolio securities or instruments only at a material loss. To meet redemption requests, the Master Bond Fund may be forced to sell other securities or instruments that are more liquid, but at unfavorable times and conditions. Investments in foreign securities and high-yield bonds tend to have more exposure to liquidity risk than domestic securities and higher-rated bonds.

Foreign securities risk - foreign securities often are more volatile, harder to price and less liquid than U.S. securities. The prices of foreign securities may be further affected by other factors, such as changes in the exchange rates between the U.S. dollar and the currencies in which the securities are traded.

Inflation-protected securities risk - because of their inflation adjustment feature, inflation-protected bonds typically have lower yields than conventional fixed-rate bonds. Inflation-protected bonds also normally decline in price when real interest rates (the interest rate minus the current inflation rate) rise. Interest payments on inflation-protected securities will fluctuate as the principal and/or interest is adjusted for inflation and can be unpredictable. The amounts of the Fund's income distributions are likely to fluctuate considerably more than the income distribution amounts of a typical bond fund. There can be no assurance that the inflation index used will accurately measure the real rate of inflation in the prices of goods and services. The Fund's investments in inflation-protected securities may lose value in the event that the actual rate of inflation is different than the rate of the inflation index. In the event of deflation, in which prices decline over time, the principal and income of inflation-protected bonds would likely decline.

Emerging markets risk - emerging markets are riskier than more developed markets because they tend to develop unevenly and may never fully develop. Investments in emerging markets are considered speculative. Emerging markets are more likely to experience hyperinflation and currency devaluations, which adversely affect returns to U.S. investors. In addition, many emerging securities markets have far lower trading volumes and less liquidity than developed markets. Since these markets are smaller than developed markets, they may be more likely to suffer sharp and frequent price changes or long-term price depression because of adverse publicity, investor perceptions or the actions of a few large investors. Practices in relation to settlement of securities transactions in emerging markets involve higher risks than those in developed markets, in part because the Fund will need to use brokers and counterparties that are less well capitalized, and custody and registration of assets in some countries are unreliable compared to developed markets. Companies in emerging market countries generally are subject to less stringent financial reporting, accounting and auditing standards than companies in more developed countries. In addition, information about such companies may be less available and reliable. Many emerging markets also have histories of political instability and abrupt changes in policies, and the ability to bring and enforce actions may be limited. Certain emerging markets also face other significant internal or external risks, including the risk of war, nationalization of assets, unexpected market closures and ethnic, religious and racial conflicts.

High-yield bonds risk - investing in high-yield bonds and other lower-rated bonds is considered speculative and may subject the Fund to substantial risk of loss due to issuer default, decline in market value due to adverse economic and business developments, or sensitivity to changing interest rates.

Prepayment and call risk - certain bonds will be paid off by the issuer more quickly than anticipated. If this happens, the Fund may be required to invest the proceeds in securities with lower yields.

Portfolio turnover risk - a higher portfolio turnover rate increases transaction costs and may adversely impact the Fund's performance.

Future delivery contracts risk - The Fund may enter into contracts, such as to-be-announced contracts and mortgage dollar rolls, that involve the Fund selling mortgage-related securities and simultaneously contracting to repurchase similar securities for delivery at a future date at a predetermined price. This can increase the Fund's market exposure, and the market price of the securities the Fund contracts to repurchase could drop below their purchase price. While the Fund can preserve capital and generate gains through the use of such contracts by, for example, realizing the difference between the sale price

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and the future purchase price, the income generated by the Fund may be reduced by engaging in such transactions. In addition, these transactions may increase the turnover rate of the Fund.

U.S. government securities risk - not all obligations of the U.S. government, its agencies and instrumentalities are backed by the full faith and credit of the United States. Some obligations are backed only by the credit of the issuing agency or instrumentality, and in some cases there is some risk of default by the issuer. Even if a security is backed by the U.S. Treasury or the full faith and credit of the United States, such guarantee applies only to the timely payment of interest and principal. Neither the U.S. government nor its agencies guarantee the market value of their securities, and interest rate changes, prepayments and other factors will affect the value of U.S. government securities. It is possible that issuers of U.S. government securities will not have the funds to meet their payment obligations in the future.

Master-feeder structure risk - other "feeder" funds also may invest in the Master Bond Fund. A larger feeder fund could have more voting power than the Fund over the operations of the Master Bond Fund. Also, a large-scale redemption by another feeder fund may increase the proportionate share of the costs of the Master Bond Fund borne by the remaining feeder fund shareholders, including the Fund.

Management risk - the Fund is subject to the risk that the methods and analyses employed by the Master Bond Fund's investment adviser will not produce the desired results. This could cause the Fund to lose value or its performance to lag those of relevant benchmarks or other funds with similar objectives.

Environmental, Social and Governance investing risk - the risk that, because the Fund's ESG strategy will select or exclude securities of certain issuers for reasons other than investment performance, the Fund's performance will differ from or underperform compared to funds that do not utilize an ESG investing strategy. ESG investing is qualitative and subjective by nature, and there is no guarantee that the factors utilized by the Master Fund's investment adviser or any judgment exercised by the investment adviser will reflect the opinions of any particular investor.

Loss of money is a risk of 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 government agency.

Performance

The following bar chart and table provide some indication of the risks of investing in the Fund. The bar chart shows the volatility or variability of the Fund's annual total returns over time and shows that Fund performance can change from year to year. The table shows the Fund's average annual total returns for certain time periods compared to the returns of a

comparable broad-based securities index. Remember, however, that past performance is not necessarily an indication of how the Fund will perform in the future. The returns shown in the bar chart and table do not include charges that will be imposed by variable insurance contracts. If these amounts were reflected, returns would be less than those shown.

Annual Total Returns- Class II Shares
(Years Ended December 31,)

Highest Quarter:	6.54%	-	4Q 2023
Lowest Quarter:	-5.31%	-	1Q 2022

Average Annual Total Returns
(For the Periods Ended December 31, 2023)

	1 Year	5 Years	10 Years
Class II Shares	4.50%	1.49%	1.69%
Bloomberg U.S. Aggregate Bond Index (reflects no deduction for fees or expenses)	5.53%	1.10%	1.81%
Lipper Core Bond Funds Average (reflects no deduction for fees and expenses)	4.50%	1.49%	1.68%

Portfolio Management

Investment Adviser to the Master Funds

Capital Research and Management CompanySM ("Capital Research")

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Portfolio Managers

Portfolio Manager	Title	Length of Service
Pramod Atluri	Partner- Capital Fixed Income Investors, a division of Capital Research	Since 2016
David J. Betanzos	Partner- Capital Fixed Income Investors, a division of Capital Research	Since 2021
David A. Hoag	Partner- Capital Fixed Income Investors, a division of Capital Research	Since 2007
Fergus N. MacDonald	Partner- Capital Fixed Income Investors, a division of Capital Research	Since 2021
Chitrang Purani	Vice President- Capital Fixed Income Investors, a division of Capital Research	Since 2023

Tax Information

The dividends and distributions paid by the Fund to the insurance company separate accounts will consist of ordinary income, capital gains, or some combination of both. Because shares of the Fund must be purchased through separate accounts used to fund variable insurance contracts, such dividends and distributions will be exempt from current taxation by contract holders if left to accumulate within a separate account. Consult the variable insurance contract prospectus for additional tax information.

Payments to Broker-Dealers and Other Financial Intermediaries

This Fund is only offered as an underlying investment option for variable insurance contracts. The Fund and its related companies may make payments to the sponsoring insurance companies (or their affiliates) for distribution and/or other services, and to broker-dealers and other financial intermediaries that distribute the variable insurance contracts. These payments may create a conflict of interest by influencing the insurance companies to include the Fund as an underlying investment option in the variable insurance contracts, and by influencing the broker-dealers and other financial intermediaries to distribute variable insurance contracts that include the Fund as an underlying investment option over other variable insurance contracts or to otherwise recommend the selection of the Fund as an underlying investment option by contract owners instead of other funds that also may be available investment options. The prospectus (or other offering document) for your variable insurance contract may contain additional information about these payments.

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