Summary Prospectus by Investment Company (Form 497K)

NATIONWIDE VARIABLE INSURANCE TRUST

NVIT J.P. Morgan Large Cap Growth Fund

Supplement dated November 7, 2025

to the Summary Prospectus dated April 30, 2025

Capitalized terms and certain other terms used in this supplement, unless otherwise defined in this supplement, have the meanings assigned to them in the Summary Prospectus.

Effective immediately, the Summary Prospectus is amended as follows:

The Fund invests in a portfolio of U.S. equity securities using a growth style of investing. "Growth" stocks are those that have above-average rates of earnings growth and thus may experience above-average increases in stock prices. Under normal circumstances, the Fund invests at least 80% of its net assets in securities of large-cap companies, which are those with market capitalizations within the range of the Russell 1000^® Growth Index at the time of purchase. Most securities held by the Fund are issued by U.S. companies, although the Fund also may invest in securities of foreign companies. Securities of some foreign companies may be denominated in currencies other than the U.S. dollar.

In managing the Fund, the subadviser uses a research-driven fundamental process and a bottom-up approach to identify stocks of companies with positive price momentum and attractive fundamentals. The subadviser seeks structural disconnects that allow businesses to exceed market expectations. These disconnects may result from demographic and/or cultural changes; technological advancements; and/or regulatory changes. Companies in which the Fund invests may come from any industry or sector, and at times the Fund may increase the relative emphasis of its investments in a particular industry or sector.

Derivatives, which are instruments that have a value based on another instrument, exchange rate or index, may be used as substitutes for securities in which the Fund may invest or to manage foreign currency risk. To the extent the Fund uses derivatives, the Fund will primarily use futures contracts to more effectively gain targeted equity exposure from its cash positions. The Fund also may use foreign currency contracts, such as futures and forwards, to manage foreign currency risk.

The Fund is classified as a "non-diversified fund" under the Investment Company Act of 1940, which means that a relatively high percentage of the Fund's assets may be invested in a limited number of issuers. The Fund's subadviser may sell a security for several reasons. A security may be sold due to a change in the original investment thesis, if market expectations exceed the company's potential to deliver and/or due to balance sheet deterioration. Investments may also be sold if the subadviser identifies a stock that it believes offers a better investment opportunity.

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.

Foreign currencies - foreign securities may be denominated or quoted in currencies other than the U.S. dollar. Changes in foreign currency exchange rates affect the value of the Fund's portfolio. Generally, when the U.S. dollar rises in value against a foreign currency, a security denominated in that currency loses value because the currency is worth fewer U.S. dollars. Conversely, when the U.S. dollar decreases in value against a foreign currency, a security denominated in that currency gains value because the currency is worth more U.S. dollars.

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, 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 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.

Forwards - using forwards can involve greater risks than if the Fund were to invest directly in the underlying securities or assets. Because forwards 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 forward contracts, and therefore they may be less liquid than exchange-traded instruments. If a forward counterparty fails to meet its obligations under the contract, the Fund will lose money.

Currency exposure - the Fund's investments in currency futures and forward foreign currency exchange contracts (collectively, "currency contracts") may involve a small investment relative to the amount of risk assumed. To the extent the Fund enters into these transactions, its success will depend on the subadviser's ability to predict market movements, and their use may have the opposite effect of that intended. Risks include potential loss due to the imposition of controls by a government on the exchange of foreign currencies, the loss of any premium paid to enter into the transaction, delivery failure, default by the other party, or inability to close out a position because the trading market becomes illiquid. Currency contracts may reduce the risk of loss from a change in the value of a currency, but they also limit any potential gains and do not protect against fluctuations in the value of the underlying security.

PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE