497K - NVIT Mellon Dynamic U.S. Core

NVIT BNY Mellon Dynamic U.S. Core Fund

Summary Prospectus April 30, 2026

Class I / Class II / Class P / Class Y

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 30, 2026 (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 web_help@nationwide.com 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 BNY Mellon Dynamic U.S. Core Fund seeks long-term capital growth.

Fees and Expenses

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 I Shares	Class II Shares	Class P Shares	Class Y Shares
Management Fees	0.47%	0.47%	0.47%	0.47%
Distribution and/or Service (12b-1) Fees	None	0.25%	0.25%	None
Other Expenses	0.19%	0.19%	0.04%	0.04%
Total Annual Fund Operating Expenses	0.66%	0.91%	0.76%	0.51%
Fee Waiver/Expense Reimbursement(1),(2)	(0.04)%	(0.04)%	(0.04)%	(0.04)%
Total Annual Fund Operating Expenses After Fee Waiver/Expense Reimbursement	0.62%	0.87%	0.72%	0.47%

(1) Nationwide Variable Insurance Trust (the “Trust”) and Nationwide Fund Advisors (the “Adviser”) have entered into a written contract limiting annual fund operating expenses to 0.65%, 0.90%,

0.75%, and 0.50% for Class I, Class II, Class P, and Class Y shares, respectively, until April 30, 2027. The expense limitation agreement may be changed or eliminated only with the consent of the Board of Trustees of the Trust. The Adviser may request and receive reimbursement from the Fund for advisory fees waived or other expenses reimbursed by the Adviser pursuant to the expense limitation agreement at a date not to exceed three years from the date in which the corresponding waiver or reimbursement to the Fund was made. However, no reimbursement may be made unless: (i) the Fund’s assets exceed $100 million and (ii) the total annual expense ratio is no higher than the amount of the expense limitation that was in place at the time the Adviser waived the fees or reimbursed the expenses and does not cause the expense ratio to exceed the current expense limitation. Reimbursement by the Fund of amounts previously waived or reimbursed by the Adviser is not permitted except as provided for in the expense limitation agreement.

(2) In addition to the expense limitation agreement discussed in Footnote 1, the Trust and the Adviser have entered into a written contract in which the Adviser has agreed to waive 0.038% of the

management fee to which the Adviser would otherwise be entitled until April 30, 2027. The written contract may be changed or eliminated only with the consent of the Board of Trustees of the

Trust.

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

NSP-USC (4/26)

Summary Prospectus April 30, 2026

NVIT BNY Mellon Dynamic U.S. Core Fund

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 I Shares	$63	$207	$364	$819
Class II Shares	89	286	500	1,116
Class P Shares	74	239	418	939
Class Y Shares	48	160	281	637

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. During the most recent fiscal year, the Fund’s portfolio turnover rate was 8.40% of the average value of its portfolio.

Principal Investment Strategies

The Fund seeks to provide investors with long-term growth of capital by outperforming the S&P 500® Index over a full market cycle while maintaining a similar level of market risk as the index. To achieve this goal, the Fund’s subadviser seeks to identify and construct the most optimal portfolio that targets an equity-like level of volatility by allocating assets among equity securities, money market instruments, futures contracts the value of which are derived from the performance of equity indexes and U.S. Treasury bonds (which are government-issued fixed income securities), and options on equity index and bond futures contracts. Futures and options are derivatives and may expose the Fund to significant leverage. Investors in the Fund should have a long-term perspective and be able to tolerate potentially sharp declines in value.

Equity securities that the Fund buys primarily are common stocks of companies that are included in the S&P 500® Index. With respect to the Fund’s portion that invests directly in equity securities, the Fund generally invests in all 500 stocks in the S&P 500® Index in proportion to their weightings in the index. Money market instruments serve primarily as cover for the Fund's derivatives positions, although the subadviser also at times allocates assets to money market instruments in order to hedge against equity market risk. Money market instruments are high-quality short-term debt securities issued by governments and corporations. The Fund obtains exposure to U.S. Treasury bonds by purchasing futures contracts on U.S. Treasury bonds included in the Bloomberg U.S. Long Treasury Index. The Fund also may purchase options on U.S. Treasury bond futures contracts. The Fund uses Treasury bond futures and options to hedge against equity market risks. It is possible, however, that the Fund will lose money on both its equity investments and its bond exposures at the same time. Under normal circumstances, the Fund invests at least 80% of its net assets in securities of U.S. issuers or derivatives the value of which are linked to securities of U.S. issuers. For these purposes, a U.S. issuer is either (i) a company whose stock is listed on the New York Stock Exchange or NASDAQ; or (ii) the United States Treasury.

In determining what the subadviser believes to be the optimal allocation among equities, U.S. Treasury bonds and money market instruments, the subadviser uses estimates of future returns and volatility. When the subadviser believes that equity markets appear favorable, it uses leverage generated by futures and options to increase the Fund’s equity exposure. When equity markets appear to be unfavorable, the subadviser reduces the Fund’s equity exposure through the use of equity index futures and related options. It also may allocate assets to U.S. Treasury bond futures and related options and/or money market instruments. By combining equity securities, futures on stock indexes and U.S. Treasury bonds, call options and money market instruments in varying amounts, the subadviser adjusts the Fund’s overall equity exposure within a range of 50%–150% of the Fund’s net assets. The subadviser regularly reviews the Fund's investments and will consider selling an investment when the subadviser believes such investment is no longer attractive as a result of price appreciation or a change in risk profile, or because other available investments are considered to be more attractive.

The Fund is designed for investors seeking growth of capital by investing in a portfolio of equity and debt securities, and derivatives with investment characteristics similar to equity and debt securities, in order to achieve enhanced equity returns while maintaining a level of volatility risk that is similar to the S&P 500® Index.

Principal Risks

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

Summary Prospectus April 30, 2026

NVIT BNY Mellon Dynamic U.S. Core Fund

As with any fund, the value of the Fund’s investments—and therefore, the value of Fund shares—may fluctuate. These changes may occur because of:

Equity securities risk – stock markets are volatile. The price of an equity security fluctuates based on changes in a company’s financial condition and overall market and economic conditions.

Leverage risk – leverage risk is a direct risk of investing in the Fund. Leverage is investment exposure that exceeds the initial amount invested. Derivatives and other transactions that give rise to leverage may cause the Fund’s performance to be more volatile than if the Fund had not been leveraged. Leveraging also may require that the Fund liquidate portfolio securities when it may not be advantageous to do so to satisfy its obligations. Certain derivatives provide the potential for investment gain or loss that may be several times greater than the change in the value of an underlying security, asset, interest rate, index or currency, resulting in the potential for a loss that may be substantially greater than the amount invested. Some leveraged investments have the potential for unlimited loss, regardless of the size of the initial investment.

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. Futures contracts and options on futures contracts typically involve leverage, which means that 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. Some of these derivatives have the potential for unlimited loss, including a loss that may be greater than the amount invested. Certain futures contracts and related options may be illiquid, making it difficult to close out an unfavorable position.

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 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.

Options – purchasing and selling options are highly specialized activities and entail greater-than-ordinary investment risks. The ability to close out positions in exchange-traded options depends on the existence of a liquid market. Options that expire unexercised have no value.

Fixed-income securities risk – investments in fixed-income securities, such as bonds or other investments with debt-like characteristics (e.g., futures contracts the value of which are derived from the performance of bond indexes), subject the Fund to interest rate risk, credit risk and prepayment and call risk, which may affect the value of your investment. Interest rate risk is the risk that the value of fixed-income securities will

decline when interest rates rise. 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 debt securities with longer-term maturities, rising interest rates are more likely to cause periods of increased volatility and redemptions, and may cause the value of the Fund’s investments to decline significantly. The Federal Reserve Board continued to lower interest rates following a period of consistent rate increases, though it is unclear if such lowering will continue. 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. The Fund is subject to the risk that the income generated by its investments in fixed-income securities will not keep pace with inflation. Recent and potential future changes in government policy may affect interest rates.

Credit risk is the risk that the issuer of a bond may default if it is unable to pay interest or principal when due. If an issuer defaults, the Fund will lose money. Changes in a bond issuer’s credit rating or the market’s perceptions of an issuer’s creditworthiness also may affect the value of a bond. Prepayment and call risk is the risk that certain debt securities will be paid off by the issuer more quickly than anticipated. If this occurs, the Fund may be required to invest the proceeds in securities with lower yields.

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.

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, trade disputes and social unrest or rapid technological developments such as artificial intelligence) adversely interrupt the global economy.

Sector risk – investments in particular industries or sectors may be more volatile than the overall stock market. Therefore, if the Fund emphasizes one or more industries or economic sectors, it will be more susceptible to financial, market or economic events affecting the particular issuers and industries participating in such sectors than funds that do not emphasize particular industries or sectors.

Summary Prospectus April 30, 2026

NVIT BNY Mellon Dynamic U.S. Core Fund

Selection risk – the risk that the securities selected by the Fund’s subadviser will underperform the markets, the relevant indexes or the securities selected by other funds with similar investment objectives and investment strategies.

Strategy risk – the subadviser’s strategy may cause the Fund to experience above-average short-term volatility. Accordingly, the Fund may be appropriate for investors who have a long investment time horizon and who seek long-term capital growth while accepting the possibility of significant short-term, or even long-term, losses.

Index strategy risk – the portion of the Fund that invests directly in equity securities does not use defensive strategies or attempt to reduce its exposure to poor performing securities. Further, correlation between such portion’s performance and that of the index is likely to be negatively affected by the Fund’s expenses, changes in the composition of the index, and the timing of purchase and redemption of Fund shares.

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 Fund from being able to take advantage of other investment opportunities. Liquidity risk also includes the risk that the 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 Fund may be forced to sell other securities or instruments that are more liquid, but at unfavorable times and conditions.

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 broad-based securities market 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.

The Fund’s performance prior to July 16, 2018, reflects returns pursuant to different principal investment strategies and a different subadviser. If the Fund’s current strategies and

subadviser had been in place for the prior period, the performance information shown would have been different.

Annual Total Returns– Class I Shares
(Years Ended December 31,)

Highest Quarter:	19.35%	–	2Q 2020
Lowest Quarter:	-18.02%	–	2Q 2022

The Fund had not commenced offering Class P shares or Class Y shares as of the date of this Prospectus. Pre-inception historical performance for Class P and Class Y shares therefore is based on the previous performance of Class I shares. Performance for Class P shares has been adjusted to reflect that share class’s higher expenses than those of Class I shares. Performance for Class Y shares has not been adjusted to reflect its lower expenses than those of Class I shares.

Average Annual Total Returns
(For the Periods Ended December 31, 2025)

	1 Year	5 Years	10 Years
Class I Shares	17.18%	12.58%	14.44%
Class II Shares	16.91%	12.31%	14.16%
Class P Shares	17.07%	12.47%	14.33%
Class Y Shares	17.18%	12.58%	14.44%
S&P 500® Index (reflects no deduction for fees or expenses)	17.88%	14.42%	14.82%

Portfolio Management

Investment Adviser

Nationwide Fund Advisors

Subadviser

Newton Investment Management North America, LLC

Summary Prospectus April 30, 2026

NVIT BNY Mellon Dynamic U.S. Core Fund

Portfolio Managers

Portfolio Manager	Title	Length of Service with Fund
James H. Stavena	Head of Portfolio Management, Multi- Asset Solutions	Since 2018
Torrey K. Zaches, CFA	Senior Portfolio Manager, Multi-Asset Solutions	Since 2020

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.

Summary Prospectus April 30, 2026

NVIT BNY Mellon Dynamic U.S. Core Fund

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Summary Prospectus April 30, 2026

NVIT BNY Mellon Dynamic U.S. Core Fund