Filing by Investment Company (SEC Filing - 497)

At a meeting of the Board of Trustees (the 'Board') of Nationwide Variable Insurance Trust held on June 16, 2021, the Board approved the termination of Neuberger Berman Investment Advisers LLC ('Neuberger Berman') as the subadviser to the NVIT Core Plus Bond Fund (the 'Fund'), and the appointment of Insight North America LLC ('Insight') as the Fund's new subadviser, effective on or about September 7, 2021 (the 'Effective Date').

As of the Effective Date, the SAI is amended as follows:

The Fund is renamed the 'NVIT BNY Mellon Core Plus Bond Fund.' All references to the Fund's former name in the SAI are replaced accordingly.

All references to, and information regarding, Thanos Bardas, David M. Brown, CFA, Thomas A. Sontag, Nathan Kush, and Bradley C. Tank, are deleted in their entirety.

The following supplements the information in the table under the heading 'Investment Advisory and Other Services - Limitation of Fund Expenses' on page 69 of the SAI:

Name of Fund

NVIT BNY Mellon Core Plus Bond Fund

The following replaces the information in the table regarding the Fund under the heading 'Investment Advisory and Other Services - Subadvisers' on page 71 of the SAI:

Fund

NVIT BNY Mellon Core Plus Bond Fund

The following supplements the information under the heading 'Investment Advisory and Other Services - Subadvisers' on page 72 of the SAI:

Insight North America LLC ('Insight') is located at 200 Park Avenue, New York, NY 10166. Insight is a New York limited liability company formed as a subsidiary of The Bank of New York Mellon Corporation in 2004 and has been registered as an investment adviser since 2009.

The following supplements the information under the heading 'Appendix B - Proxy Voting Guidelines Summaries':

In addition to this Policy, Clients may obtain information on how Insight voted their proxies.

Additionally, Insight will maintain proxy voting records for its advisory clients, consistent with the Investment Advisers Act of 1940, as amended (the 'Advisers Act').

For Clients that are registered investment companies, Insight will disclose this Policy to the shareholders of such funds and make filings with the Securities and Exchange Commission ('SEC') with regard to the specific proxy votes that Insight cast as shareholders of portfolio securities in accordance with the rules and regulations under the Investment Company Act of 1940, as amended (the 'Investment Company Act').

Certain Clients may participate in securities lending programs. If Insight is aware that a material event will occur affecting securities on loan, Insight will be obligated to call such loan in time to vote the proxies; however, with respect to other voting matters involving securities on loan, Insight would generally not vote with respect to such securities.

The Chief Compliance Officer ('CCO') or her designee will determine whether a conflict of interest is material. A conflict of interest will be considered material to the extent that it is determined that such conflict has the potential to influence Insight's decision-making. Further, a conflict of interest shall be deemed material in the event the issuer that is the subject of the proxy or any executive officer of that issuer has a Client relationship with Insight or its affiliates, of the type described above. All other materiality determinations will be based on an assessment of the particular facts and circumstances. The CCO or her designee shall maintain a written record of all materiality determinations in addition to the method used to resolve a material conflict of interest.

If it is determined that a conflict of interest is not material, Insight will vote proxies in accordance with the specific voting policy detailed in Section V, below.

If it is determined that a conflict of interest is material, one or more methods may be used to resolve the conflict, including:

disclosing the conflict to the client and obtaining its consent before voting;

suggesting to the client that it engage another party to make a recommendation;

engaging a third party to recommend a vote with respect to the proxy based on application of the policies set forth herein; or

utilizing such other method as is deemed appropriate under the circumstances given the nature of the conflict.

ROUTINE MATTERS

They do not measurably change the structure, management control, or operation of the corporation.

They are consistent with industry standards as well as the corporate laws of the state of incorporation.

To increase authorized common shares.

To increase authorized preferred shares as long as there are not disproportionate voting rights per preferred share.

To elect or re-elect directors.

To appoint or elect auditors.

To approve indemnification of directors and limitation of directors' liability.

To establish compensation levels.

To establish employee stock purchase or ownership plans.

To set time and location of annual meeting.

NON-ROUTINE PROPOSALS

Social Issues

To enforce restrictive energy policies.

To place arbitrary restrictions on military contracting.

To bar or place arbitrary restrictions on trade with other countries.

To restrict the marketing of controversial products.

To limit corporate political activities.

To bar or restrict charitable contributions.

To enforce a general policy regarding human rights based on arbitrary parameters.

To enforce a general policy regarding employment practices based on arbitrary parameters.

To enforce a general policy regarding animal rights based on arbitrary parameters.

To place arbitrary restrictions on environmental practices.

Financial/Corporate Issues

To change the state of incorporation.

To approve mergers, acquisitions or dissolution.

To institute indenture changes.

To change capitalization.

Shareholder Rights

To require majority approval of shareholders in acquisitions of a controlling share in the corporation.

To institute staggered board of directors.

To require shareholder approval of not more than 66 2/3% for a proposed amendment to the corporation's by-laws.

To eliminate cumulative voting.

To adopt anti-greenmail charter or by-law amendments or to otherwise restrict a company's ability to make greenmail payments.

To create a dividend reinvestment program.

To eliminate preemptive rights.

To eliminate any other plan or procedure designed primarily to discourage a takeover or other similar action (commonly known as a 'poison pill').

To require greater than 66 2/3% shareholder approval for a proposed amendment to the corporation's by-laws ('super-majority provisions').

To require an arbitrary fair price be offered to all shareholders that is derived from a fixed formula ('fair price amendments').

To authorize a new class of common stock or preferred stock which may have more votes per share than the existing common stock.

To prohibit replacement of existing members of the board of directors.

To eliminate shareholder action by written consent without a shareholder meeting.

To allow only the board of directors to call a shareholder meeting or to propose amendments to the articles of incorporation.

To implement any other action or procedure designed primarily to discourage a takeover or other similar action (commonly known as a 'poison pill').

To limit the ability of shareholders to nominate directors.

To rescind share purchases rights or require that they be submitted for shareholder approval, but only if the vote required for approval is not more than 66 2/3%.

To opt out of state anti-takeover laws deemed to be detrimental to the shareholder.

To change the state of incorporation for companies operating under the umbrella of anti- shareholder state corporation laws if another state is chosen with favorable laws in this and other areas.

To eliminate any other plan or procedure designed primarily to discourage a takeover or other similar action.

To permit shareholders to participate in formulating management's proxy and the opportunity to discuss and evaluate management's director nominees, and/or to nominate shareholder nominees to the board

To require that the board's audit, compensation, and/or nominating committees be comprised exclusively of independent directors.

To adopt anti-greenmail charter or by-law amendments or otherwise restrict a company's ability to make greenmail payments.

To create a dividend reinvestment program.

To recommend that votes to 'abstain' not be considered votes 'cast' at an annual meeting or special meeting, unless required by state, law.

To require that 'golden parachutes' be submitted for shareholder ratification.

To restore preemptive rights.

To restore cumulative voting.

To require annual election of directors or to specify tenure.

To eliminate a staggered board of directors.

To require confidential voting.

To require directors to own a minimum amount of company stock in order to qualify as a director or to remain on the board.

To dock director pay for failing to attend board meetings.

a copy of these policies and procedures;

a copy of each proxy solicitation (including proxy statements) and related materials with regard to each recommendation;

documentation relating to the identification and resolution of conflicts of interest; and

any documents created by Insight that were material to a proxy voting recommendation or that memorialized the basis for that recommendation.

The subsection 'Investments in Each Fund' under the heading 'Appendix C - Portfolio Managers' is amended to include the following:

Insight North America LLC

The following supplements the information under subsection 'Description of Compensation Structure' under the heading 'Appendix C - Portfolio Managers':

Shared ownership for all employees: Our people are highly engaged with our business and our culture of collective ownership reinforces collaboration across teams and strengthens the alignment with our clients. All of our people are awarded an annual grant of our long-term incentive plan (LTIP). LTIP awards typically vest after three years and their value is based on an independent external assessment of Insight's market value. Share-based LTIP is awarded as non-voting,non-dividend paying equity in Insight. The LTIP is a powerful tool for staff retention and ensures employees share directly in the success of the business. For our senior management, investment desk heads and material risk-takers, we operate a deferral policy where at least 40% of variable pay is deferred through LTIP. In the UK, our employees also have an opportunity to acquire Insight shares from their pre-taxed salary.

Designed to support a culture of high performance: Our approach to compensation is designed to support the culture of the business and to ensure that top performance is recognized with top quartile industry pay. This has successfully enabled us to attract and retain, what we believe to be, the best available talent in the industry. The structure of our compensation plans actively promote team working and collaboration across teams. The main components of compensation are base salary and variable pay. Variable pay is made up of two elements; discretionary annual cash amount and a deferral into our LTIP, awarded under a consistent set of principles, globally. We also offer competitive benefits and well-being programs, where the health and welfare of our people is paramount.

Simple and transparent: We recognize the importance of applying a clear and consistent compensation process as aligned with our philosophy of payment for performance. For our senior staff, total compensation is heavily weighted towards variable pay and the overall value of variable pay is directly linked to the profitability and performance of the business. Therefore, if Insight performs and our people deliver strong performance their total compensation will be competitive.

Aligned with performance management: Insight believes firmly in setting performance-related objectives that are structured to promote sound and effective risk management within the company's

risk management appetite. Performance is assessed and evaluated in light of an individual's contribution to the overall client mandate, team and business performance, and culture. We aim to reward most highly those individuals who help the team to perform strongly. A team culture is an essential part of the way we conduct our business and our compensation policy is designed to encourage this.

Regulatory compliant with robust governance: The general principles of our compensation arrangements are agreed with our parent company, BNY Mellon, and are reviewed at least twice a year by the Insight Remuneration Committee. We ensure our compensation processes and policy are compliant with all relevant regulation, including the requirements of the FCA Remuneration Code and corresponding local Directives.

The subsection 'Other Managed Accounts' under the heading 'Appendix C - Portfolio Managers' is amended to include the following:

Number of Accounts Managed by Each Portfolio Manager and
Total Assets by Category

(As of March 31, 2021)

Insight North America LLC

Gautam Khanna, CFA, CPA

James DiChiaro

The following supplements the information under subsection 'Potential Conflicts of Interest' under the heading 'Appendix C - Portfolio Managers':

Shareholders of the Fund will receive an Information Statement in the near future, as required under the Trust's Manager of Managers Exemptive Order, with more detailed information about Insight.