PROSPECTUS SUPPLEMENT
(to Prospectus dated July 9, 2025)

1,930,837 Common Shares

NXG NextGen Infrastructure Income Fund

Issuable Upon Exercise of Transferrable Rights to Subscribe for Common Shares

NXG NextGen Infrastructure Income Fund (the “Fund”) is a non-diversified, closed-end management investment company.

The Fund is issuing transferable rights (“Rights”) to its common shareholders of record (“Record Date Shareholders”) as of 5:00 p.m., Eastern time, on April 6, 2026 (the “Record Date”), entitling the holders of Rights to subscribe for up to an aggregate of 1,930,837 of the Fund’s common shares of beneficial interest, par value $0.001 per share (“Common Shares”) (the “Offer”). Record Date Shareholders will receive one Right for each outstanding Common Share held on the Record Date. The Rights entitle their holders to purchase one new Common Share for every three Rights held (1-for-3). Any Record Date Shareholder who owns fewer than three Common Shares as of the Record Date may subscribe, at the Subscription Price, for one full Common Share in the Offer. In addition, Record Date Shareholders who fully exercise their Rights (other than those Rights that cannot be exercised because they represent the right to acquire less than one Common Share) will be entitled to subscribe for additional Common Shares that remain unsubscribed as a result of any unexercised Rights. This over-subscription privilege is subject to a number of limitations and subject to allotment.

The subscription price per Common Share to be issued in the Offer (the “Subscription Price”) will be determined based upon a formula equal to 95% of the average of the last reported sale price of a Common Share on the New York Stock Exchange (the “NYSE”) on the date on which the Offer expires, as such date may be extended from time to time, and each of the four (4) preceding trading days (the “Formula Price”). If, however, the Formula Price is less than 92% of the net asset value (“NAV”) per Common Share at the close of trading on the NYSE on the Expiration Date (as defined below), then the Subscription Price will be 92% of the Fund’s NAV per Common Share at the close of trading on the NYSE on the Expiration Date. The Fund will pay a sales load on the Subscription Price. The Offer will expire at 5:00 p.m., Eastern time, on April 30, 2026, unless extended as described in this Prospectus Supplement (the “Expiration Date”).

Rights holders will not know the Subscription Price at the time of exercise and will be required initially to pay for both the Common Shares subscribed for pursuant to the primary subscription and, if eligible, any additional Common Shares subscribed for pursuant to the over-subscription privilege at the estimated Subscription Price of $52.49 per Common Share and, except in limited circumstances, will not be able to rescind their subscription.

Exercising your Rights and investing in the Fund’s Common Shares involves a high degree of risk. See “Risks” on page 11 of the accompanying Prospectus.

The Offer will dilute the ownership interest and voting power of the Common Shares owned by Common Shareholders who do not fully exercise their Rights. Common Shareholders who do not fully exercise their Rights should expect, upon completion of the Offer, to own a smaller proportional interest in the Fund than before the Offer. Further, if the net proceeds per Common Share from the Offer are at a discount to the Fund’s NAV per Common Share, this Offer will reduce the Fund’s NAV per Common Share.

Neither the Securities and Exchange Commission (“SEC”) nor any state securities commission has approved or disapproved of these securities or determined if this Prospectus Supplement or the accompanying Prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

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The Common Shares are expected to be delivered on or about May 27, 2026, unless the Offer is extended.

UBS Investment Bank

This Prospectus Supplement is dated April 6, 2026.

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The Fund has declared a regular April monthly distribution to Common Shareholders in an amount of $0.54 per share payable on April 30, 2026, with a record date of April 16, 2026, which will not be payable with respect to Common Shares that are issued pursuant to the Offer after April 16, 2026. The Fund has also declared a regular May monthly distribution to Common Shareholders in an amount of $0.54 per share payable on May 29, 2026, with a record date of May 15, 2026.

NAV dilution resulting from the Offer is not currently determinable because it is not known how many Common Shares will be subscribed for, what the NAV or market price of the Common Shares will be on the Expiration Date or what the Subscription Price will be. Any such dilution will disproportionately affect non-exercising Common Shareholders. If the Subscription Price is substantially less than the then current NAV, this dilution could be substantial. However, assuming all of the Common Shares are sold at the estimated Subscription Price (which includes a sales load) and after deducting all expenses related to the issuance of the Common Shares, the Fund’s current NAV per Common Share would be reduced by approximately $1.90, or 3.43%. The distribution to Common Shareholders of transferable Rights, which themselves have intrinsic value, will afford non-participating Record Date Shareholders the potential of receiving cash payment upon the sale of the Rights, receipt of which may be viewed as partial compensation for any dilution of their interests that may occur as a result of the Offer. There can be no assurance that a market for the Rights will develop or, if such a market develops, what the price of the Rights will be. See “Risks Relating to the Offer” in this Prospectus Supplement. Except as described herein, Rights holders will have no right to rescind their subscriptions after receipt of their payment for Common Shares by the Subscription Agent for the Offer.

Investment Objective. The Fund is a non-diversified, closed-end management investment company. The Fund’s investment objective is to seek high total return with an emphasis on current income. There can be no assurance that the Fund will achieve its investment objective.

Investment Strategy. The Fund pursues its investment objective by investing, under normal market conditions, at least 80% of its net assets, plus any borrowings for investment purposes, in a portfolio of equity and debt securities of infrastructure companies, including energy infrastructure companies, industrial infrastructure companies, sustainable infrastructure companies and technology and communication infrastructure companies.

The infrastructure investment landscape is rapidly evolving due to technological advancement. While some energy and industrial infrastructure companies (sometimes referred to as “traditional” infrastructure companies) are now in their maturity phase, many traditional infrastructure companies have become leaders in implementing technological innovations. The Fund’s next generation focus within the infrastructure investment landscape consists of these innovative infrastructure companies along with sustainable infrastructure companies and technology and communication infrastructure companies. Similar to traditional infrastructure assets, which provide the underlying foundation of basic services, facilities and institutions and are often said to form the “backbone” of the economy, technology and communication infrastructure assets provide the underlying foundation of the data that drives the modern knowledge economy.

The Fund considers an infrastructure company to be any company that has at least 50% of its assets, income, revenue, sales or profits committed to or derived from the ownership, operation, management, construction, development, servicing or financing of infrastructure assets. Infrastructure assets include energy and industrial infrastructure assets, sustainable infrastructure assets and technology and communication infrastructure assets. Energy and industrial infrastructure assets are physical structures, networks and systems of transportation, energy, water and sewage, security and communications. Examples of energy and industrial infrastructure assets include toll roads, bridges, and tunnels; airports, seaports, railroads, electricity transmission, and distribution lines; facilities used in gathering, treating, processing, fractionation, transportation and storage of hydrocarbon products; water and sewage treatment facilities and distribution pipelines; communication towers, cables, and satellites; and security systems related to the foregoing assets. Sustainable infrastructure assets include renewable energy infrastructure assets such as power generation from renewable and other clean energy sources, including utility scale and distributed solar power, wind, hydroelectric and geothermal power, renewable energy storage and electric vehicle charging networks, as well as waste collection and recycling, water purification and desalinization. Technology and communication infrastructure assets consist of assets, systems and technologies that collect, enable, analyze, optimize, automate, transmit and secure the data that allows businesses and other organizations to operate. Examples of technology and communications infrastructure assets include: data centers, cloud, hosting, and database systems, transactional and financial backend systems, customer relationship management systems, smart city technologies, network security and cybersecurity, automation systems, human resource and workforce management and industry specific infrastructure software. Examples of companies engaged in the servicing of infrastructure assets, include engineering and construction firms, oilfield and grid services providers, and specialized contractors that support the development, operation, and maintenance of energy, industrial, sustainable, and technology infrastructure assets. Examples of companies engaged in the financing of infrastructure assets include commercial banks, publicly listed leasing and specialty finance companies, structured credit firms, and infrastructure-focused REITs that provide debt or capital solutions directly to infrastructure projects or operating companies.

The Fund invests no more than 25% of its Managed Assets in securities of energy master limited partnerships (“MLPs”) that are “qualified publicly traded partnerships” under the Internal Revenue Code of 1986, as amended (the “Code”).

The Fund may invest in below investment grade debt securities. A debt security is considered below investment grade if it is rated below Baa3- by Moody’s or below BBB- by S&P or Fitch or a comparable rating by another rating agency. Below investment grade debt securities are often referred to as “high yield” securities or “junk bonds.” Below investment grade debt securities are regarded as having predominantly speculative characteristics with respect to capacity to pay interest and to repay principal.

Listing and Symbol. The Fund’s currently outstanding Common Shares are, and the Common Shares offered by this Prospectus Supplement and the accompanying Prospectus, will be, subject to notice of issuance, listed on the New York Stock Exchange (the “NYSE”) under the symbol “NXG.” As of April 1, 2026, the net asset value per share of the Fund’s Common Shares was $55.58 and the last reported sale price for the Fund’s Common Shares on the NYSE was $54.43, representing a discount to net asset value of 2.07%. The Rights will be, subject to notice of issuance, admitted for trading on the NYSE under the symbol “NXG RT” during the course of the Offer. Trading in the Rights on the NYSE may be conducted until the close of trading on the NYSE on the last business day prior to the Expiration Date.

The Fund’s securities do not represent a deposit or obligation of, and are not guaranteed or endorsed by, any bank or other insured depository institution and are not federally insured by the Federal Deposit Insurance Corporation, the Federal Reserve Board or any other government agency.

Capitalized terms used herein that are not otherwise defined shall have the meanings assigned to them in the accompanying Prospectus.

TABLE OF CONTENTS

ABOUT THIS PROSPECTUS SUPPLEMENT

This document has two parts. The first part is this Prospectus Supplement, which describes the terms of the Offer. The second part is the accompanying Prospectus, which contains more general information about the securities that the Fund may offer from time to time, some of which may not apply to this Offer. If information in this Prospectus Supplement is inconsistent with the accompanying Prospectus, you should rely on this Prospectus Supplement. You should carefully read this Prospectus Supplement and the accompanying Prospectus, together with the additional information described under the heading “Where You Can Find More Information.”

This Prospectus Supplement and the accompanying Prospectus and the SAI, contain (or will contain) or incorporate (or will incorporate) by reference forward-looking statements, within the meaning of the federal securities laws, that involve risks and uncertainties. These statements describe the Fund’s plans, strategies, and goals and the Fund’s beliefs and assumptions concerning future economic and other conditions and the outlook for the Fund, based on currently available information. In this Prospectus Supplement and the accompanying Prospectus, words such as “anticipates,” “believes,” “expects,” “objectives,” “goals,” “future,” “intends,” “seeks,” “will,” “may,” “could,” “should,” and similar expressions, and the negative of such terms, are used in an effort to identify forward-looking statements, although some forward-looking statements may be expressed differently. By their nature, all forward looking statements involve risks and uncertainties, and actual results could differ materially from those contemplated by any forward looking statements. Although the Fund believes that the expectations expressed in these forward looking statements are reasonable, actual results could differ materially from those projected or assumed in these forward looking statements. The Fund’s future financial condition and results of operations, as well as any forward looking statements, are subject to change and are subject to inherent risks and uncertainties, such as those disclosed in the “Risks” sections of this Prospectus Supplement, the accompanying Prospectus and the Fund’s most recent Annual Report, which describe certain currently known risk factors that could cause actual results to differ materially from the Fund’s expectations. The Fund urges you to review carefully that section for a more detailed discussion of the risks associated with an investment in the Fund’s securities. All forward looking statements contained or incorporated by reference in this Prospectus Supplement and the accompanying Prospectus are made as of the date of this Prospectus Supplement. The Fund does not intend, and undertakes no obligation, to update any forward looking statement. The Fund is not entitled to the safe harbor for forward-looking statements pursuant to Section 27A of the Securities Act.

You should rely only on the information contained or incorporated by reference in this Prospectus Supplement and the accompanying Prospectus. The Fund has not authorized any other person to provide you with different information. If anyone provides you with different or inconsistent information, you should not rely on it. The Fund is not making an offer to sell these securities in any jurisdiction where the offer or sale is not permitted. You should not assume that the information in this Prospectus Supplement and the accompanying Prospectus is accurate as of any date other than the date of this Prospectus Supplement. The Fund’s business, financial condition and results of operations may have changed since that date. The Fund will amend this Prospectus Supplement and the accompanying Prospectus if, during the period that this Prospectus Supplement and the accompanying Prospectus is required to be delivered, there are any subsequent material changes.

WHERE YOU CAN FIND MORE INFORMATION

The Fund is subject to the informational requirements of the Securities Exchange Act of 1934, as amended (the “Exchange Act”) and the Investment Company Act of 1940, as amended (the “1940 Act”), and in accordance therewith files, or will file, reports and other information with the SEC. Reports, proxy statements and other information filed by the Fund with the SEC pursuant to the informational requirements of the Exchange Act and the 1940 Act can be inspected and copied at the public reference facilities maintained by the SEC, 100 F Street, N.E., Washington, D.C. 20549. The SEC maintains a web site at www.sec.gov containing reports, proxy and information statements and other information regarding registrants, including the Fund, that file electronically with the SEC.

This Prospectus Supplement and the accompanying Prospectus constitute part of a Registration Statement filed by the Fund with the SEC under the Securities Act, and the 1940 Act (File Nos. 333-287058 and 811-22499). This Prospectus Supplement and the accompanying Prospectus omit certain of the information contained in the Registration Statement, and reference is hereby made to the Registration Statement and related exhibits for further information with respect to the Fund and the Common Shares offered hereby. Any statements contained herein or in the accompanying Prospectus concerning the provisions of any document are not necessarily complete, and, in each instance, reference is made to the copy of such document filed as an exhibit to the Registration Statement or otherwise filed with the SEC. Each such statement is qualified in its entirety by such reference. The complete Registration Statement may be obtained from the SEC upon payment of the fee prescribed by its rules and regulations or free of charge through the SEC’s website (www.sec.gov).

The Fund will provide without charge to each person, including any beneficial owner, to whom this Prospectus Supplement and the accompanying Prospectus are delivered, upon written or oral request, a copy of any and all of the information that has been incorporated by reference in this Prospectus Supplement or the accompanying Prospectus. You may request such information by calling (855) 862-6092 or by writing to NXG Investment Management at One Energy Square, 4925 Greenville Avenue, Suite 1310, Dallas, Texas 75206, or you may obtain a copy (and other information regarding the Fund) from the SEC’s website (www.sec.gov). Free copies of this Prospectus Supplement, the accompanying Prospectus, the SAI and any incorporated information will also be available from the Fund’s website at www.nxgim.com. Information contained on the Fund’s website is not incorporated by reference into this Prospectus Supplement or the accompanying Prospectus and should not be considered to be part of this Prospectus Supplement or the accompanying Prospectus.

INCORPORATION BY REFERENCE

This Prospectus Supplement and the accompanying Prospectus is part of a registration statement that the Fund has filed with the SEC. The Fund is permitted to “incorporate by reference” the information that it files with the SEC, which means that the Fund can disclose important information to you by referring you to those documents. The information incorporated by reference is an important part of this Prospectus, and later information that the Fund files with the SEC will automatically update and supersede this information.

The documents listed below, and any reports and other documents subsequently filed with the SEC pursuant to Rule 30(b)(2) under the 1940 Act and Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act, prior to the termination of the offering, are incorporated by reference into this Prospectus Supplement and the accompanying Prospectus and deemed to be part of this Prospectus and the accompanying Prospectus from the date of the filing of such reports and documents:

To obtain copies of these filings, see “Where You Can Find More Information.”

SUMMARY OF FUND EXPENSES

CAPITALIZATION

The following table sets forth the Fund’s capitalization at November 30, 2025:

USE OF PROCEEDS

The Fund estimates the net proceeds of the Offer to be approximately $97,103,718. This figure is based on the Subscription Price per Common Share of $52.49 and assumes the sale of 1,930,837 of Common Shares pursuant to the exercise of Rights and that the estimated Dealer Manager fee of $3,734,162 and the other expenses related to the Offer, estimated at approximately $517,950 are paid.

The Fund intends to invest the net proceeds of the offering in accordance with its investment objective and policies as stated in the accompanying Prospectus. It is currently anticipated that the Fund will be able to invest substantially all of the net proceeds of the offering in accordance with its investment objective and policies within three months after the completion of the offering. Pending such investment, it is anticipated that the proceeds will be invested in cash, cash equivalents or other securities, including U.S. government securities or high quality, short-term debt securities. The Fund may also use the proceeds for working capital purposes, including the payment of distributions, interest and operating expenses, although the Fund currently has no intent to issue Securities primarily for these purposes.

TERMS OF THE OFFER

Purpose of the Offer

The Board, based on the recommendations of and presentations by the Investment Adviser, and others, has determined that it is in the best interests of the Fund and its Common Shareholders to conduct the Offer and thereby to increase the assets of the Fund available for investment. In making this determination, the Board considered a number of factors, including potential benefits and costs. In particular, the Board considered the Investment Adviser’s belief that the Offer would enable the Fund to seek to take advantage of existing and future investment opportunities that may be or may become available, consistent with the Fund’s investment objective to seek high total return with an emphasis on current income.

The Offer seeks to provide an opportunity to existing Common Shareholders to purchase Common Shares at a discount to market price (subject to the sales load described in this Prospectus Supplement). The Board considered that the distribution to Common Shareholders of transferable Rights, which may themselves have intrinsic value, also will afford non-participating Common Shareholders of record on the Record Date, the potential of receiving cash payment upon the sale of the Rights, receipt of which may be viewed as partial compensation for any dilution of their interests that may occur as a result of the Offer. There can be no assurance that a market for the Rights will develop or, if such a market does develop, what the price of the Rights will be.

In making its determination that the Offer is in the best interests of the Fund and its Common Shareholders, the Board also considered various additional factors, including: (i) the size, pricing and structure of the Offer, including the transferability of the Rights and the ability of the Dealer Manager to purchase and exercise Rights; (ii) that the Offer, if it is well-subscribed, could increase the liquidity of the Common Shares on the NYSE, where the Common Shares are traded; (iii) the opportunity the Offer represents for current Common Shareholders to buy Common Shares at a discount to NAV or market price, or, in many cases, both; (iv) the costs of the Offer, including dilution of Common Shareholders’ interests through the Offer and fees paid to the Dealer Manager; (v) the possible negative effect of the Offer on the market price of Common Shares; and (vi) that the Offer will increase the Fund’s asset base and thus allow it to spread fixed expenses over a larger base of assets and that continued growth in the Fund’s asset base may lead to reductions in the Fund’s expense ratio. The Board noted that the Investment Adviser has an inherent conflict of interest in recommending the Offer because its fees are based on a percentage of the Fund’s Managed Assets (the greater the Managed Assets of the Fund, the greater the compensation paid to the Investment Adviser).

There can be no assurance that the Offer (or the investment of the proceeds of the Offer) will be successful. The completion of the Offer may result in an immediate dilution of the NAV per Common Share for all existing Common Shareholders, including those who fully exercise their Rights (as defined below). For a discussion of the potential impact of the Offer on current Common Shareholders, such as dilution, see “Risks Relating to the Offer” in this Prospectus Supplement.

Important Terms of the Offer

The Fund is issuing transferable rights (“Rights”) to its Common Shareholders of record (“Record Date Shareholders”) as of 5:00 p.m., Eastern time, on April 6, 2026 (the “Record Date”), entitling the holders of those Rights to subscribe for up to an aggregate of 1,930,837 of the Fund’s Common Shares (the “Shares”) (the “Offer”). Record Date Shareholders will receive one Right for each outstanding whole Common Share of the Fund held on the Record Date. The Rights entitle their holders to purchase one Common Share for every three Rights held (1-for-3). Fractional Common Shares will not be issued upon the exercise of Rights; accordingly, Rights may be exercised only in integer multiples of three, except that any Record Date Shareholder who owns fewer than three Common Shares as of the Record Date may subscribe, at the Subscription Price (as defined on the next page), for one full Common Share. Assuming the exercise of all Rights, the Offer will result in an approximately 33 1/3% increase in the Fund’s Common Shares outstanding.

Record Date Shareholders who exercise all the Rights issued to them (other than those Rights that cannot be exercised because they represent the right to acquire less than one Common Share) are entitled to subscribe for additional Common Shares at the same Subscription Price pursuant to the over-subscription privilege, subject to certain limitations and subject to allotment. Investors who are not Record Date Shareholders, but who otherwise acquire Rights to purchase Shares pursuant to the Offer, are not entitled to subscribe for any Shares pursuant to the over-subscription privilege. See “—Over-Subscription Privilege” below. The distribution to Record Date Shareholders of transferable Rights may afford non-participating Record Date Shareholders the opportunity to sell their Rights for some cash value, receipt of which may be viewed as partial compensation for any economic dilution of their interests resulting from the Offer.

The subscription period commences on April 6, 2026, and ends at 5:00 p.m., Eastern time, on April 30, 2026 unless otherwise extended (the “Expiration Date”).

The Fund has declared a regular April monthly distribution to Common Shareholders in an amount of $0.54 per share payable on April 30, 2026, with a record date of April 16, 2026, which will not be payable with respect to Common Shares that are issued pursuant to the Offer after April 16, 2026. The Fund has also declared a regular May monthly distribution to Common Shareholders in an amount of $0.54 per share payable on May 29, 2026, with a record date of May 15, 2026.

For purposes of determining the maximum number of Common Shares a Rights holder may acquire pursuant to the Offer, broker-dealers, trust companies, banks or others whose Common Shares are held of record by Cede & Co., the nominee for the DTC, or by any other depository or nominee, will be deemed to be the holders of the Rights that are held by Cede & Co. or such other depository or nominee on their behalf.

The Rights are transferable and, subject to notice of issuance, will be admitted for trading on the NYSE under the symbol “NXG RT” during the course of the Offer. Trading in the Rights on the NYSE may be conducted until the close of trading on April 29, 2026, the last business day prior to the Expiration Date. See “—Sale and Transferability of Rights.” It is expected that the Shares, once issued, will be listed on the NYSE under the symbol “NXG.” The Rights will be evidenced by subscription certificates which will be mailed to Record Date Shareholders, except as discussed under “—Requirements for Foreign Shareholders.”

Rights may be exercised by filling in and signing the subscription certificate and mailing it in the envelope provided, or otherwise delivering the completed and signed subscription certificate to Equiniti Trust Company, LLC, the subscription agent for the Offer (the “Subscription Agent”), together with payment at the estimated Subscription Price for the Common Shares subscribed for. For a discussion of the method by which Rights may be exercised and Common Shares may be paid for, see “—Method for Exercising Rights” and “—Payment for Common Shares.”

The Fund has retained UBS Securities LLC (the “Dealer Manager”) to provide the Fund with financial structuring and soliciting services relating to the Offer, including advice with respect to the structure, timing and terms of the Offer. In determining the structure of the Offer, the Board considered, among other things, using a fixed-pricing versus a variable-pricing mechanism, the benefits and drawbacks of conducting a non-transferable versus a transferable rights offering, the anticipated effect on the Fund and its existing Common Shareholders if the Offer is not fully subscribed, the anticipated dilutive effects on the Fund and its existing Common Shareholders of the Offer and the experience of the Dealer Manager in conducting rights offerings. The Board also considered that the Investment Adviser would benefit from the Offer because the management fee paid to the Investment Adviser is based on the Fund’s Managed Assets, which would increase as a result of the Offer. See “—Benefits to the Investment Adviser.”

Important Dates to Remember

Record Date: April 6, 2026

Subscription Period: April 6, 2026 – April 30, 2026*

Final Date Rights Will Trade: April 29, 2026*

Expiration Date and Pricing Date: April 30, 2026*

Subscription Certificate and Payment for Shares Due+: April 30, 2026*

Notice of Guaranteed Delivery and Payment for Shares Due+: April 30, 2026*

Subscription Certificates Pursuant to Guarantees of Delivery Due+: May 1, 2026*

Confirmation Mailed to Participants: May 12, 2026*

Final Payment for Shares Due: May 27, 2026†*

Issuance Date: May 27, 2026*

Subscription Price

The Subscription Price per Common Share will be determined based on a Formula Price equal to 95% of the average of the last reported sale price of a Common Share on the NYSE on the date on which the Offer expires, as such date may be extended from time to time, and each of the four (4) preceding trading days. If, however, the Formula Price is less than 92% of the NAV per Common Share at the close of trading on the NYSE on the Expiration Date, then the Subscription Price will be 92% of the Fund’s NAV per Common Share at the close of trading on the NYSE on the Expiration Date. In each case, NAV will be calculated as of the close of trading on the NYSE on the applicable day.

Because the Expiration Date of the subscription period will be April 30, 2026 (unless the subscription period is extended), Rights holders will not know the Subscription Price at the time of exercise and will be required initially to pay for both the Shares subscribed for pursuant to the primary subscription and, if eligible, any additional Common Shares subscribed for pursuant to the over-subscription privilege at the estimated Subscription Price of $52.49 per Common Share. See “—Payment for Common Shares.” A Rights holder will have no right to rescind his subscription after the Subscription Agent has received a completed subscription certificate together with payment for the Common Shares subscribed for. The Fund does not have the right to withdraw the Rights or to cancel the Offer after the Rights have been distributed.

The NAV per Common Shares at the close of business on April 1, 2026 was $55.58, and the last reported sale price of a Common Share on the NYSE on that day was $54.43, representing a discount to NAV of 2.07%.

Over-Subscription Privilege

Record Date Shareholders who exercise all the Rights issued to them (other than those Rights that cannot be exercised because they represent the right to acquire less than one Common Share) are entitled to subscribe for additional Common Shares that were not subscribed for by other holders of Rights at the same Subscription Price pursuant to the over-subscription privilege, subject to certain limitations and subject to allotment. If sufficient remaining Common Shares are available following the primary subscription, all Record Date Shareholders’ over-subscription requests will be honored in full. Investors who are not Record Date Shareholders, but who otherwise acquire Rights pursuant to the Offer, are not entitled to subscribe for any Common Shares pursuant to the over-subscription privilege. If sufficient Common Shares are not available to honor all over-subscription requests, unsubscribed Common Shares will be allocated pro rata among those Record Date Shareholders who over-subscribe based on the number of Common Shares they owned on the Record Date. The allocation process may involve a series of allocations in order to ensure that the total number of Common Shares available for over-subscriptions is distributed on a pro rata basis.

Record Date Shareholders who are fully exercising their Rights during the subscription period should indicate, on the subscription certificate that they submit with respect to the exercise of the Rights issued to them, how many Common Shares they desire to acquire pursuant to the over-subscription privilege.

Banks, broker-dealers, trustees and other nominee holders of Rights will be required to certify to the Subscription Agent, before any over-subscription privilege may be exercised with respect to any particular beneficial owner, as to the aggregate number of Rights exercised during the subscription period and the number of Common Shares subscribed for pursuant to the over-subscription privilege by such beneficial owner, and that such beneficial owner’s primary subscription was exercised in full. Nominee holder over-subscription forms will be distributed to banks, brokers, trustees and other nominee holders of Rights with the subscription certificates.

The Fund will not offer or sell any Common Shares that are not subscribed for during the subscription period or pursuant to the over-subscription privilege.

The Fund has been advised that one or more of the officers or employees of the Investment Adviser may exercise all of the Rights initially issued to them and may request additional Common Shares pursuant to the over-subscription privilege. An exercise of the over-subscription privilege by such persons will increase their proportionate voting power and share of the Fund’s assets.

Sale and Transferability of Rights

The Rights will be, subject to notice of issuance, admitted for trading on the NYSE under the symbol “NXG RT” during the course of the Offer. Trading in the Rights on the NYSE may be conducted until the close of trading on April 29, 2026 on the last business day prior to the Expiration Date. The Fund will use its best efforts to ensure that an adequate trading market for the Rights will exist, although there can be no assurance that a market for the Rights will develop. Assuming a market exists for the Rights, the Rights may be purchased and sold through usual brokerage channels or sold through the Subscription Agent.

Trading of the Rights on the NYSE will be conducted on a when-issued basis until and including the date on which the subscription certificates evidencing Rights are mailed to Record Date Shareholders and thereafter will be conducted on a regular-way basis until and including the last NYSE trading day prior to the completion of the Subscription Period. The Common Shares are expected to begin trading ex-Rights one Business Day prior to the Record Date.

Rights that are sold will not confer any right to acquire any Common Shares pursuant to the over-subscription privilege, if any, and any Record Date Shareholder who sells any Rights (other than those Rights that cannot be exercised because they represent the right to acquire less than one Common Share) will not be eligible to participate in the over-subscription privilege, if any.

Sales through the Subscription Agent and the Dealer Manager. Record Date Shareholders who do not wish to exercise any or all of the Rights issued to them pursuant to the Offer may instruct the Subscription Agent to try to sell any unexercised Rights. Although the Rights are expected to trade on the NYSE through the last business day prior to the Expiration Date, subscription certificates representing the Rights to be sold by the Subscription Agent must be received by the Subscription Agent on or before 5:00 p.m., Eastern time, on April 23, 2026 (or, if the subscription period is extended, by 5:00 p.m., Eastern time, on the fifth business day prior to the extended Expiration Date).

Upon the timely receipt by the Subscription Agent of appropriate instructions to sell Rights, the Subscription Agent will ask the Dealer Manager if it will purchase the Rights. The sale price of any Rights sold to the Dealer Manager will be based upon the then-current market price for the Rights. The proceeds from each of such sales to the Dealer Manager will be remitted to the Subscription Agent, which will hold such proceeds in an account segregated from the Subscription Agent’s own funds pending distribution to each selling Record Date Shareholder. It is expected that following each such sale of Rights to the Dealer Manager, the proceeds from each such sale will be received by the Subscription Agent within two business days of the sale and that the proceeds will then be remitted by the Subscription Agent to the selling Record Date Shareholder within one business day following the Expiration Date.

If the Dealer Manager declines to purchase the Rights of a Record Date Shareholder that have been duly submitted to the Subscription Agent for sale, the Subscription Agent will attempt to sell such Rights in the open market. If the Rights can be sold in such manner, all of such sales will be deemed to have been effected at the weighted-average price of all Rights sold by the Subscription Agent in such open market transactions throughout the subscription period. The proceeds from such sales will be held by the Subscription Agent in an account segregated from the Subscription Agent’s own funds pending distribution to the selling Record Date Shareholders. It is expected that the proceeds of such open market sales will be remitted by the Subscription Agent to the selling Record Date Shareholders within one business day following the Expiration Date.

The Subscription Agent will also attempt to sell (either to the Dealer Manager or in open market transactions) all Rights that remain unclaimed as a result of subscription certificates being returned by the postal authorities to the Subscription Agent as undeliverable as of the fifth business day prior to the Expiration Date. The Subscription Agent will hold the proceeds from those sales in an account segregated from the Subscription Agent’s own funds for the benefit of such non-claiming Record Date Shareholders until such proceeds are either claimed or revert to their state of residence.

There can be no assurance that the Subscription Agent will be able to complete the sale of any Rights, and neither the Fund, the Dealer Manager nor the Subscription Agent have guaranteed any minimum sale price for the Rights. If a Record Date Shareholder does not utilize the services of the Subscription Agent and chooses to use another broker-dealer or other financial institution to sell Rights issued to that Record Date Shareholder pursuant to the Offer, then the other broker-dealer or financial institution may charge a fee to sell the Rights.

Other Transfers. The Rights evidenced by a subscription certificate may be transferred in whole by endorsing the subscription certificate for transfer in accordance with the instructions accompanying the subscription certificate. A portion of the Rights evidenced by a single subscription certificate (but not fractional Rights) may be transferred by delivering to the Subscription Agent a subscription certificate properly endorsed for transfer, with instructions to register such portion of the Rights evidenced thereby in the name of the transferee and to issue a new subscription certificate to the transferee evidencing the transferred Rights. If this occurs, a new subscription certificate evidencing the balance of the Rights, if any, will be issued to the Record Date Shareholder or, if the Record Date Shareholder so instructs, to an additional transferee. The signature on the subscription certificate must correspond with the name as written upon the face of the subscription certificate in every particular, without alteration or enlargement or any other change. A signature guarantee will be required in connection with a transfer of Rights. If required, a signature guarantee must be provided by an “eligible guarantor institution” (as defined in Rule 17Ad-15 of the Securities Exchange Act of 1934, as amended).

Record Date Shareholders wishing to transfer all or a portion of their Rights (but not fractional Rights) should allow at least ten business days prior to the Expiration Date for: (i) the transfer instructions to be received and processed by the Subscription Agent; (ii) a new subscription certificate to be issued and transmitted to the transferee or transferees with respect to transferred Rights and to the transferor with respect to retained Rights, if any; and (iii) the Rights evidenced by the new subscription certificate to be exercised or sold by the recipients of the subscription certificate. Neither the Fund nor the Subscription Agent nor the Dealer Manager shall have any liability to a transferee or transferor of Rights if subscription certificates are not received in time for exercise or sale prior to the Expiration Date.

Except for the fees charged by EQ Fund Solutions, LLC, the information agent for the Offer (the “Information Agent”), the Subscription Agent and the Dealer Manager (which are expected to be paid from the proceeds of the Offer by the Fund), all commissions, fees and other expenses (including brokerage commissions and transfer taxes) incurred or charged in connection with the purchase, sale or transfer of Rights will be for the account of the transferor of the Rights, and none of these commissions, fees or other expenses will be paid by the Fund, the Investment Adviser, the Information Agent, the Subscription Agent or the Dealer Manager. Rights holders who wish to purchase, sell, exercise or transfer Rights through a broker, bank or other party should first inquire about any fees and expenses that the holder will incur in connection with the transactions.

The Fund anticipates that the Rights will be eligible for transfer through, and that the exercise of the primary subscription and the over-subscription may be effected through, the facilities of DTC or the Subscription Agent until 5:00 p.m., Eastern time, on the Expiration Date. Your broker, bank, trust company or other intermediary may impose a deadline for transferring Rights earlier than 5:00 p.m. Eastern time, on the Expiration Date.

Method for Exercising Rights

Rights are evidenced by subscription certificates that will be mailed to Record Date Shareholders (except as described under “—Requirements for Foreign Shareholders” below) or, if their Common Shares are held by Cede & Co. or any other depository or nominee on their behalf, to Cede & Co. or such other depository or nominee. Rights may be exercised by completing and signing the subscription certificate and mailing it in the envelope provided, or otherwise delivering the completed and signed subscription certificate to the Subscription Agent, together with payment in full at the estimated Subscription Price for the Common Shares subscribed for by the Expiration Date as described under “—Payment for Common Shares.” Rights may also be exercised through the broker of a holder of Rights, who may charge the holder of Rights a servicing fee in connection with such exercise. Rights may also be exercised by contacting your broker, bank, trust company or other intermediary, which can arrange, on your behalf, to guarantee delivery of a properly completed and executed subscription certificate pursuant to a notice of guaranteed delivery by the close of business on the first business day after the Expiration Date. A fee may be charged for this service. Completed subscription certificates and payments must be received by the Subscription Agent by 5:00 p.m., Eastern time, on the Expiration Date (unless delivery of subscription certificate is effected by means of a notice of guaranteed delivery as described below under “—Payment for Common Shares”) at the offices of the Subscription Agent at one of the addresses set forth below under “—Subscription Agent.” Your broker, bank, trust company or other intermediary may impose a deadline for exercising Rights earlier than 5:00 p.m. Eastern time, on the Expiration Date. Fractional Common Shares will not be issued upon exercise of Rights.

Shareholders who are Record Owners. Shareholders who are record owners of Common Shares can choose between either option set forth under “—Payment for Common Shares.” If time is of the essence, option (2) will permit delivery of the subscription certificate after the Expiration Date.

Investors whose Common Shares are Held by a Nominee. Investors whose Common Shares are held by a nominee, such as a bank, broker, trustee or other intermediary, must contact that nominee to exercise their Rights. In that case, the nominee will complete the subscription certificate on behalf of the investor and arrange for proper payment by one of the methods set forth below under “—Payment for Common Shares.”

Nominees. Nominees, such as banks, brokers, trustees or depositories for securities, who hold Common Shares for the account of others should notify the respective beneficial owners of such Common Shares as soon as possible to ascertain those beneficial owners’ intentions and to obtain instructions with respect to the Rights. If the beneficial owner so instructs, the nominee should complete the subscription certificate and submit it to the Subscription Agent with the proper payment as described under “—Payment for Common Shares.”

Banks, brokers, trustees and other nominee holders of Rights will be required to certify to the Subscription Agent, before any over-subscription privilege may be exercised with respect to any particular beneficial owner who is a Record Date Shareholder, as to the aggregate number of Rights exercised during the subscription period and the number of Common Shares subscribed for pursuant to the over-subscription privilege by the beneficial owner, and that the beneficial owner exercised all the Rights issued to it pursuant to the Offer.

Requirements for Foreign Shareholders. Subscription certificates will not be mailed to Record Date Shareholders whose addresses are outside the United States (for these purposes, the United States includes the District of Columbia and the territories and possessions of the United States) (“Foreign Shareholders”). The Subscription Agent will send a letter via regular mail to Foreign Shareholders to notify them of the Offer. The Rights of Foreign Shareholders will be held by the Subscription Agent for their accounts until instructions are received to exercise the Rights. If instructions have not been received by 5:00 p.m., Eastern time, on April 23, 2026, five business days prior to the Expiration Date (or, if the subscription period is extended, on or before the fifth business day prior to the extended Expiration Date), the Subscription Agent will ask the Dealer Manager if it will purchase the Rights. If the Dealer Manager declines to purchase the Rights, the Subscription Agent will attempt to sell such Rights in the open market. The net proceeds, if any, from the sale of those Rights will be remitted to those Foreign Shareholders.

Expenses of the Offer

The Fund will bear the expenses of the Offer and all such expenses will be borne indirectly by the Fund’s Common Shareholders, including those who do not exercise their Rights. These expenses include, but are not limited to, the Dealer Manager fee, reimbursement of the Dealer Manager’s expenses, the expenses of preparing, printing and mailing the prospectus and Rights subscription materials for the Offer (including reimbursement of expenses of the Dealer Manager, Selling Group Members, Soliciting Dealers and other brokers, dealers and financial institutions), SEC registration fees and the fees assessed by service providers (including the cost of the Fund’s counsel and independent registered public accounting firm) in connection with the Offer.

Subscription Agent

Equiniti Trust Company, LLC is the Subscription Agent for the Offer. The Subscription Agent will receive for its administrative, processing, invoicing and other services a project management fee, plus certain per transaction fees and reimbursement for all out-of-pocket expenses related to the Offer. The fees and expenses of the Subscription Agent are included in the fees and expenses of the Offer and therefore will be borne by the Fund and indirectly by all Common Shareholders, including those who do not exercise their Rights. Questions regarding the subscription certificates should be directed by mail to the Information Agent at EQ Fund Solutions, LLC, 28 Liberty Street, 53^rd Floor, New York, New York 10005. Shareholders may also subscribe for the Offer by contacting their broker dealer, trust company, bank or other nominee.

Completed subscription certificates must be sent together with proper payment of the estimated Subscription Price for all Common Shares subscribed for in the primary subscription and the over-subscription privilege (for Record Date Shareholders) to the Subscription Agent by one of the methods described below. Alternatively, Rights holders may arrange for their financial intermediaries to submit notices of guaranteed delivery through DTC to be received by the Subscription Agent along with proper payment of the estimated Subscription Price for all Common Shares subscribed for in the primary subscription and the over-subscription privilege (for Record Date Shareholders) prior to 5:00 p.m., Eastern time, on the Expiration Date. The Fund will accept only properly completed and executed subscription certificates actually received at any of the addresses listed below, prior to 5:00 p.m., Eastern time, on the Expiration Date, or by the close of business on the first business day after the Expiration Date following timely receipt of a notice of guaranteed delivery. See “—Payment for Common Shares.”

The Fund will honor only subscription certificates received by the Subscription Agent prior to 5:00 p.m., Eastern time, on the Expiration Date at one of the addresses listed above. Delivery to an address other than those listed above will not constitute good delivery.

Information Agent

The Information Agent for the Offer is EQ Fund Solutions, LLC. If you have questions or need further information about the Offer, please write the Information Agent at EQ Fund Solutions, LLC, 28 Liberty Street, 53^rd Floor, New York, New York 10005 or call (800) 290-6429. Any questions or requests for assistance concerning the method of subscribing for Common Shares or additional copies of this Prospectus Supplement and the accompanying Prospectus or subscription certificates should be directed to the Information Agent. Common Shareholders may also contact their brokers or nominees for information with respect to the Offer.

The Information Agent will receive a fee for its services, plus reimbursement for all out-of-pocket expenses related to the Offer. The fees and expenses of the Information Agent are included in the fees and expenses of the Offer and therefore will be borne by the Fund and indirectly by all of its Common Shareholders, including those who do not exercise their Rights.

Expiration of the Offer

The Offer will expire at 5:00 p.m., Eastern time, on April 30, 2026, unless the Fund extends the subscription period. Rights will expire on the Expiration Date and may not be exercised after that date. If the Fund extends the subscription period, the Fund will make an announcement as promptly as practicable. This announcement will be issued no later than 9:00 a.m., Eastern time, on the next business day following the previously scheduled Expiration Date. Without limiting the manner in which the Fund may choose to make this announcement, the Fund will not, unless otherwise required by law, have any obligation to publish, advertise or otherwise communicate this announcement other than by making a release to the Dow Jones News Service or any other means of public announcement as the Fund may deem proper.

Payment for Common Shares

Rights holders who wish to acquire Common Shares pursuant to the Offer may choose between the following methods of payment:

On the confirmation date, which will be eight business days following the Expiration Date, a confirmation will be sent by the Subscription Agent to each Rights holder exercising its Rights (or, if a Rights holder’s Common Shares are held by DTC or any other depository or nominee, to DTC and/or that other depository or nominee) showing (i) the number of Common Shares acquired during the subscription period, (ii) the number of Common Shares, if any, acquired pursuant to the over-subscription privilege, (iii) the per Common Share and total purchase price for the Common Shares and (iv) any additional amount payable to the Fund by the Rights holder or any excess to be refunded by the Fund to the Rights holder, in each case based on the Subscription Price as determined on the Expiration Date. Any additional payment required from a Rights holder must be received by the Subscription Agent within ten business days after the confirmation date (which confirmation date is May 12, 2026, unless the subscription period is extended). Any excess payment to be refunded by the Fund to a Rights holder will be mailed by the Subscription Agent to such Rights holder as promptly as practicable. All payments by a Rights holder must be in U.S. dollars by personal check drawn on a bank located in the United States and payable to “Equiniti Trust Company, LLC.”

Whichever of the two methods described above is used, issuance and delivery of the Common Shares subscribed for are contingent upon actual payment for such Common Shares. No certificates will be issued or delivered with respect to Common Shares issued and sold in the Offer.

Rights holders who have exercised their Rights will have no right to rescind their subscription after receipt of the completed subscription certificate together with payment for the Common Shares subscribed for by the Subscription Agent.

If a Rights holder who acquires Common Shares during the subscription period or pursuant to the over-subscription privilege (for Record Date Shareholders) does not make payment of any amounts due by the Expiration Date, the Fund reserves the right to take any or all of the following actions through all appropriate means: (i) find other Record Date Shareholders for the subscribed and unpaid-for Common Shares; (ii) apply any payment actually received by the Fund toward the purchase of the greatest whole number of Common Shares that could be acquired by the Rights holder upon exercise of such Rights acquired during the subscription period or pursuant to the over-subscription privilege; and/or (iii) exercise any and all other rights or remedies to which the Fund may be entitled, including, without limitation, the right to set off against payments actually received by it with respect to such subscribed Common Shares.

The method of delivery of completed subscription certificates and payment of the Subscription Price to the Subscription Agent will be at the election and risk of exercising Rights holders, but if sent by mail it is recommended that such forms and payments be sent by registered mail, properly insured, with return receipt requested, and that a sufficient number of days be allowed to ensure delivery to the Subscription Agent and clearance of payment by 5:00 p.m., Eastern time, on the Expiration Date. Because uncertified personal checks may take at least five business days to clear, exercising Rights holders are strongly urged to pay, or arrange for payment, by means of certified or cashier’s check with the Right holder’s name and Subscription Agent account number identified on the check.

All questions concerning the timeliness, validity, form and eligibility of any exercise of Rights will be determined by the Fund, which determinations will be final and binding. The Fund, in its sole discretion, may waive any defect or irregularity, or permit a defect or irregularity to be corrected within such time as it may determine, or reject the purported exercise of any Right. Subscriptions will not be deemed to have been received or accepted until substantially all irregularities have been waived or cured within such time as the Fund determines in its sole discretion. The Fund will not be under any duty to give notification of any defect or irregularity in connection with the submission of subscription certificates or incur any liability for failure to give such notification.

Delivery of Shares

Participants in the Fund’s dividend reinvestment plan (the “Plan”) will have any Common Shares acquired pursuant to the Offer credited to their dividend reinvestment accounts in the Plan. Common Shareholders whose Common Shares are held of record by DTC or by any other depository or nominee on their behalf or their broker-dealers’ behalf will have any Common Shares acquired during the subscription period credited to the account of DTC or other depository or nominee. No certificates will be issued or delivered with respect to Common Shares issued and sold in the Offer.

U.S. Federal Income Tax Considerations

The following is a general summary of U.S. federal income tax considerations with respect to the Offer for Record Date Shareholders and other Rights holders who are U.S. Persons as defined below. The following summary supplements the discussion set forth in the accompanying Prospectus and SAI under the headings “U.S. Federal Income Tax Considerations” and is subject to the qualifications and assumptions set forth therein. Please refer to such discussion for a general description of the U.S. federal income tax considerations with respect to an investment in Common Shares.

The summary below is based upon the Code, Treasury regulations promulgated thereunder (“Treasury regulations”), judicial authorities, published positions of the Internal Revenue Service (the “IRS”) and other applicable authorities, all as in effect on the date hereof and all of which are subject to change or differing interpretations possibly with retroactive effect. The discussion does not address all of the tax consequences that may be relevant to a particular Record Date Shareholder or other Rights holder, including those subject to special treatment under U.S. federal income tax laws such as financial institutions, insurance companies, broker-dealers, tax-exempt organizations, foreign persons, or persons holding Rights or Common Shares as part of a straddle or conversion transaction. This discussion is limited to Record Date Shareholders and other Rights holders that hold Common Shares as capital assets. No ruling has been or will be sought from the IRS regarding any matter discussed herein. No assurance can be given that the IRS would not assert, or that a court would not sustain, a position contrary to any of the tax aspects set forth below. Record Date Shareholders and other Rights holders should consult their tax advisors as to the U.S. federal income tax consequences of the Offer that are relevant to their particular situations, as well as the effects of state, local and non-U.S. tax laws.

For purposes of this discussion, a “U.S. Person” means a holder that is, for U.S. federal income tax purposes, any one of the following:

● an individual who is a citizen or resident of the United States;

● a corporation or other entity treated as a corporation that is created or organized in or under the laws of the U.S. or any state thereof or the District of Columbia;

● a trust if a court within the U.S. is able to exercise primary supervision over the administration of the trust and one or more U.S. persons have the authority to control all substantial decisions of the trust or the trust has a valid election in effect under applicable Treasury regulations to be treated as a U.S. person; or

● an estate, the income of which is includible in gross income for U.S. federal income tax purposes regardless of its source.

If a partnership (or any other entity or arrangement treated as a partnership or other pass-through entity for U.S. federal income tax purposes) holds a Right, the U.S. federal income tax treatment of a partner generally will depend upon the status of the partner and the activities of the partnership. Partners and partnerships holding Rights should consult their tax advisors concerning the U.S. federal income and other tax consequences relevant to their particular situation.

Issuance of Rights, Basis and Holding Period. Record Date Shareholders should not recognize taxable income in connection with the receipt of a Right pursuant to the Offer, provided that the distribution does not have the result of causing some Record Date Shareholders to receive an increase in their proportionate interest in the assets or earnings and profits of the Fund and other Record Date Shareholders to receive cash or property. The distribution of the Rights in the Offer should not have the effect of causing some Record Date Shareholders to receive an increase in their proportionate interest in the assets or earnings and profits of the Fund and other Record Date Shareholders to receive cash or property. Therefore, no income should be recognized by any Record Date Shareholders in connection with the issuance of the Rights pursuant to the Offer.

Except as provided in the following sentence, the basis of a Right received by a Record Date Shareholder will be zero and the basis of the Common Share with respect to which the Right was issued (the “Old Common Share”) will remain unchanged. The Record Date Shareholder must allocate a portion of the basis of the Old Common Share to the Right in proportion to their respective fair market values on the date of distribution if (i) either (a) the fair market value of the Right on the date of distribution is at least 15% of the fair market value of the Old Common Share on that date, or (b) the Record Date Shareholder affirmatively elects (in the manner set out in Treasury regulations) to allocate to the Right a portion of the basis of the Old Common Share and (ii) the Right does not expire unexercised in the hands of the Record Date Shareholder (i.e., the Record Date Shareholder either exercises or sells the Right following its issuance).

The basis of a Right purchased in the market will generally be its purchase price.

The holding period of the Rights received in the Offer will include the Record Date Shareholder’s holding period for the Common Shares with respect to which the Rights were issued.

Expiration of the Rights. Record Date Shareholders who receive Rights in the Offer with respect to their Common Shares and who allow such Rights to expire unexercised will not recognize any gain or loss, and no adjustment will be made to the basis of the holder’s Common Shares.

If a Right that has been purchased in the market expires unexercised, the holder will recognize a loss equal to the basis of the Right. If the Right was held as a capital asset, loss on the expiration of the Right generally will be a capital loss. The deductibility of capital losses is subject to a number of limitations under the Code.

Sale of the Rights. Upon the sale of a Right, the seller will recognize gain or loss equal to the difference between the amount realized on the sale and the seller’s basis in the Right. Any gain or loss on the sale of a Right will be capital gain or loss if the Right is held as a capital asset (which in the case of Rights issued to Record Date Shareholders will depend on whether the Old Common Share is held as a capital asset), and will be a long-term capital gain or loss if the holding period of the Right, as determined under the discussion herein, is deemed to exceed one year at the time of the disposition.

Exercise of the Rights, Basis and Holding Period of Acquired Common Shares. No gain or loss will be recognized by a Rights holder upon the exercise of a Right, and the basis of any Common Share acquired upon exercise of the Right (the “New Common Share”) will equal the sum of the (i) basis, if any, of the Right(s) exercised and (ii) the Subscription Price for the New Common Share. The holding period for the New Common Share acquired through exercise of the Right will begin on the date of exercise of the Right (or, in the case of a Right purchased in the market, potentially the day after the date of exercise).

Employee Benefit Plan Considerations

Common Shareholders that are employee benefit plans subject to the Employee Retirement Income Security Act of 1974, as amended (“ERISA”) (including corporate savings and 401(k) plans, each, an ERISA Plan), Keogh plans of self-employed individuals, Individual Retirement Accounts (“IRAs”) and other plans subject to Section 4975 of the Code (with ERISA Plans, each a “Plan” and collectively, the “Plans”) should be aware that additional contributions of cash to the Plan (other than rollover contributions or trustee-to-trustee transfers from other Plans) made in order to exercise Rights would be treated as Plan contributions and, when taken together with contributions previously made, may subject a Plan to excise taxes for excess or nondeductible contributions. In the case of Plans qualified under Section 401(a) of the Code and certain other plans, additional cash contributions could cause the maximum contribution limitations of Section 415 of the Code or other qualification rules to be violated. Plans contemplating the receipt of additional cash contributions to exercise Rights should consult with their counsel prior to receiving or using such contributions.

Plans and other tax exempt entities, including governmental plans, should also be aware that if they borrow in order to finance their exercise of Rights, they may become subject to the tax on unrelated business taxable income under Section 511 of the Code. If any portion of an IRA is used as security for a loan to the individual for whose benefit the IRA is established, the portion so used may be treated as distributed to such individual.

Each fiduciary of a Plan should consider, to the extent applicable, the fiduciary standards of ERISA and the Code in the context of the Plan’s particular circumstances before making any decision regarding the exercise or other disposition (and in the case of any transferee, the acquisition) of Rights, and any investment in Common Shares as a consequence thereof. Under ERISA and the Code, any person who exercises any discretionary authority or control over the administration of a Plan or the management or disposition of the assets of a Plan, or who renders investment advice for a fee or other compensation to a Plan, is generally considered to be a fiduciary of the Plan. Accordingly, among other factors, the fiduciary should consider whether the exercise or transfer of Rights and any investment in Common Shares would satisfy the prudence, diversification and conflicts of interests requirements of ERISA, to the extent applicable, and would be consistent with its fiduciary responsibilities, and the documents and instruments governing the Plan.

To the extent the Fund, the Investment Adviser or certain of their respective affiliates or other parties involved with the Offer, or in the case of a transfer of Rights, the transferee, might be considered a “party in interest” or a “disqualified person” with respect to a Plan, prohibited transactions may arise under ERISA and/or Section 4975 of the Code in connection with exercises or transfers of Rights unless made pursuant to an available statutory, regulatory, individual or class exemption. In this regard the U.S. Department of Labor has issued prohibited transaction class exemptions that may apply. These exemptions include transactions effected on behalf of a Plan by a “qualified professional asset manager” (prohibited transaction exemption 84-14) or an “in-house asset manager” (prohibited transaction exemption 96-23), transactions involving insurance company general accounts (prohibited transaction exemption 95-60), transactions involving insurance company pooled separate accounts (prohibited transaction exemption 90-1), and transactions involving bank collective investment funds (prohibited transaction exemption 91-38). In addition, Section 408(b)(17) of ERISA and Section 4975(d)(20) of the Code provide relief from the prohibited transaction provisions of ERISA and Section 4975 of the Code for certain transactions, provided that neither the issuer of the securities nor any of its affiliates (directly or indirectly) have or exercise any discretionary authority or control or render any investment advice with respect to the assets of any Plan involved in the transaction and provided further that the Plan receives no less and pays no more than “adequate consideration” (within the meaning of Section 408(b)(17) of ERISA and Section 4975(f)(10) of the Code). There can be no assurance that any of the above exemptions or any other exemption would apply, or that all of the conditions of any such exemptions would be satisfied, with respect to all otherwise prohibited transactions involving Rights or any Common Shares obtained pursuant to any Rights.

Governmental plans, certain church plans and non-U.S. plans may not be subject to the prohibited transaction provisions of ERISA or the Code but may be subject to similar laws (“Similar Laws”). Fiduciaries of any such plans should consult with counsel before exercise or transfer of Rights.

Because of the foregoing, the person making the decision (the “fiduciary”) on behalf of a Plan or a governmental, church or foreign plan subject to Similar Law will be deemed to represent on behalf of itself and the Plan or plan subject to Similar Law that the exercise or other disposition (and in the case of any transferee, the acquisition) of the Rights (and the investment in Common Shares pursuant to any exercise) will not result in a non-exempt prohibited transaction under ERISA or Section 4975 of the Code or any applicable Similar Law. In addition, the fiduciary making any decision on behalf of a Plan to exercise, acquire or transfer Rights will be deemed to have represented, warranted and acknowledged that neither the Fund nor the Investment Adviser, nor any of their respective affiliates, representatives or agents has provided or will provide advice in a fiduciary capacity with respect to the exercise, acquisition or disposition of Rights by the Plan, unless an exception applies permitting such status.

Due to the complexity of these rules and the penalties for non-compliance, Plans and plans subject to Similar Law should consult with their counsel regarding the consequences of their exercise, acquisition or transfer of Rights under ERISA and the Code or any applicable Similar Law. Each holder of Rights has the exclusive responsibility for ensuring that its acquisition, exercise or other disposition of the Rights, as applicable, does not violate the fiduciary or prohibited transaction rules of ERISA, the Code or any applicable Similar Laws. The provision of this offering memorandum and the provision of any Rights to, or the transfer of Common Shares to a Plan pursuant to the exercise of Rights by, a Plan is in no respect a representation or recommendation by the Fund, the Investment Adviser or of their respective affiliates, representatives or agents that such an investment is appropriate or advisable for, or meets all relevant legal requirements with respect to investments by, Plans or plans subject to Similar Laws generally or by any particular Plan or plan subject to Similar Law.

Benefits to the Investment Adviser

The Investment Adviser will benefit from the Offer, in part, because the investment management fee paid by the Fund to the Investment Adviser is based on the Fund’s Managed Assets. It is not possible to state precisely the amount of additional compensation the Investment Adviser will receive as a result of the Offer because it is not known how many Common Shares will be subscribed for and because the proceeds of the Offer will be invested in additional portfolio securities which will fluctuate in value. However, assuming (i) all Rights are exercised, (ii) the Fund’s average NAV during the twelve-month period immediately following the completion of the Offer is $55.58 per Common Share (the NAV per Common Share on April 1, 2026) (iii) the Subscription Price is $52.49 per Common Share, and (iv) for purposes of this example, the Fund increases the amount of leverage outstanding while maintaining approximately the same percentage of total assets attributable to leverage, and after giving effect to the Dealer Manager fee and other estimated offering expenses, the Investment Adviser would receive additional investment management fees of approximately $1,418,618 for the twelve-month period immediately following the completion of the Offer, and would continue to receive additional investment management fees as a result of the Offer, based on the Fund’s Managed Assets attributable to the Common Shares issued in the Offer and related additional leverage, thereafter.

Investment Considerations and Dilution

Upon completion of the Offer, Common Shareholders who do not exercise their Rights fully will own a smaller proportional interest in the Fund than would be the case if the Offer had not been made. Furthermore, if you do not participate in the over-subscription privilege, if it is available, your percentage ownership may also be diluted.

In addition, because the Subscription Price per Common Share is likely to be less than the Fund’s NAV per Common Share, the Offer will likely result in a dilution of the Fund’s NAV per Common Share for all Common Shareholders, irrespective of whether they exercise all or any portion of their Rights. Although it is not possible to state precisely the amount of such a decrease in value, because it is not known at this time what the Subscription Price will be, what the NAV per Common Share will be on the Expiration Date or what proportion of Common Shares will be subscribed for, the dilution could be substantial.

The impact of the Offer on NAV per share is shown by the following example, assuming a $52.49 Subscription Price and assuming full exercise of the Rights:

Record Date Shareholders will experience a decrease in the NAV per Common Share held by them, irrespective of whether they exercise all or any portion of their Rights.

The distribution of transferable Rights, which may themselves have value, will afford non-participating Common Shareholders the potential of receiving a cash payment upon the sale of the Rights, receipt of which may be viewed as partial compensation for the economic dilution of their interests, although there can be no assurance that a market for the Rights will develop.

RISKS RELATING TO THE OFFER

Dilution Risk

As a result of this Offer, it is anticipated that even if you fully exercise your Rights, you should expect to incur immediate economic dilution and, if you do not exercise all of your Rights, you will incur voting dilution. Further, both the sales load and the expenses associated with the Offer paid by the Fund will immediately reduce the NAV of each Common Shareholder’s Common Shares. To the extent that the number of Common Shares outstanding after the Offer will have increased proportionately more than the increase in the size of the Fund’s net assets, you will, at the completion of the Offer, experience immediate dilution of NAV. The percentage increase in Common Shares outstanding that will occur if all the Rights are exercised is 33 1/3%. In addition, if the Subscription Price for the Offer is less than the Fund’s NAV per Common Share as of the Expiration Date, you would experience additional immediate dilution of NAV as a result of the Offer. If the Subscription Price is substantially less than the current NAV per Common Share at the expiration of the Offer, such dilution could be substantial. It is anticipated that the existing Common Shareholders will experience immediate dilution even if they fully exercise their Rights. In addition, whether or not you exercise your Rights, you will experience a dilution of NAV of the Common Shares because you will indirectly bear the expenses of this Offer, which include, among other items, SEC registration fees, printing expenses and the fees assessed by service providers (including the cost of the Fund’s counsel and independent registered public accounting firm). This dilution of NAV will disproportionately affect Common Shareholders who do not exercise their Rights. The Fund cannot state precisely the amount of any decrease because it is not known at this time how many Common Shares will be subscribed for or what the NAV or market price of the Fund’s Common Shares will be on the Expiration Date or what the Subscription Price will be. For example, based on the Fund’s NAV and the market price of Common Shares on April 1, 2026, and on each of the four (4) preceding trading days, the Subscription Price would be less than NAV and there would be dilution. Assuming full exercise of the Rights being offered at the Subscription Price and assuming that the Expiration Date were April 1, 2026, it is estimated that the per Common Share dilution resulting from the Offer would be $1.90 or -3.43%.

In addition to the economic dilution described above, if you do not exercise all of your Rights, you will incur voting dilution as a result of this Offer. This voting dilution will occur because you will own a smaller proportionate interest in the Fund after the Offer than you owned prior to the Offer.

The fact that the Rights are transferable may reduce the effects of dilution as a result of the Offer. Rights holders can transfer or sell their Rights. The cash received from the sale of Rights may be viewed as partial compensation for any possible dilution. There can be no assurances, however, that a market for the Rights will develop or that the Rights will have any value in that market.

Increase in Share Price Volatility; Decrease in Share Price

The Offer may result in an increase in trading of the Common Shares, which may increase volatility in the market price of the Common Shares. The Offer may result in an increase in the number of Common Shareholders wishing to sell their Common Shares, which would exert downward price pressure on the price of Common Shares.

Under-Subscription

It is possible that the Offer will not be fully subscribed. Under-subscription of the Offer could have an impact on the net proceeds of the Offer and whether the Fund achieves any benefits.

Risks of Acquiring Rights to Purchase Common Shares

Shares of closed-end funds such as the Fund frequently trade at a discount to NAV. Since inception, the Fund’s Common Shares have frequently traded at a discount in relation to NAV. See “Description of Common Shares.” If the Formula Price is less than 92% of NAV on the Expiration Date, then the Subscription Price will likely be greater than the market price of a Common Share on that date. In addition, the Formula Price, even if above 92% of NAV, may still be above the market price of a Common Share on the Expiration Date. If either event occurs, the Rights will have no value, and a person who exercises Rights will experience an immediate loss of value.

There can be no assurance that a market for the Rights will develop or, if such a market develops, what the price of the Rights will be. Changes in market conditions may result in the Common Shares purchasable upon exercise of the Rights being less attractive to investors at the Expiration Date. This may reduce or eliminate the value of the Rights. Investors who receive or acquire Rights may find that there is no market to sell Rights that they do not wish to exercise.

PLAN OF DISTRIBUTION

Distribution Arrangements

UBS Securities LLC will act as Dealer Manager for this Offer. Under the terms and subject to the conditions contained in the Dealer Manager Agreement among the Dealer Manager, the Fund and the Investment Adviser, the Dealer Manager will provide financial structuring and solicitation services in connection with the Offer and will solicit the exercise of Rights and participation in the over-subscription privilege. The Offer is not contingent upon any number of Rights being exercised. The Dealer Manager will also be responsible for forming and managing a group of selling broker-dealers (each a “Selling Group Member” and collectively the “Selling Group Members”), whereby each Selling Group Member will enter into a Selling Group Agreement with the Dealer Manager to solicit the exercise of Rights and to sell Common Shares purchased by the Selling Group Member from the Dealer Manager. In addition, the Dealer Manager will enter into a Soliciting Dealer Agreement with other soliciting broker-dealers (each a “Soliciting Dealer” and collectively the “Soliciting Dealers”) to solicit the exercise of Rights. See “—Compensation to Dealer Manager” for a discussion of fees and other compensation to be paid to the Dealer Manager, Selling Group Members and Soliciting Dealers in connection with the Offer.

The Fund and the Investment Adviser have each agreed to indemnify the Dealer Manager for losses arising out of certain liabilities, including liabilities under the Securities Act. The Dealer Manager Agreement also provides that the Dealer Manager will not be subject to any liability to the Fund in rendering the services contemplated by the Dealer Manager Agreement except for any act of willful misfeasance, bad faith or gross negligence of the Dealer Manager or reckless disregard by the Dealer Manager of its obligations and duties under the Dealer Manager Agreement.

Prior to the expiration of the Offer, the Dealer Manager may independently offer for sale Common Shares it has acquired through purchasing and exercising the Rights, at prices that may be different from the market price for such Common Shares or from the price to be received by the Fund upon the exercise of Rights. The Dealer Manager is authorized to buy and exercise Rights (for delivery of Common Shares prior to the expiration of the Offer), including unexercised Rights of Record Date Shareholders whose record addresses are outside the United States that are held by the Subscription Agent and for which no instructions are received, and to sell Common Shares to the public or to Selling Group Members at the offering price set by the Dealer Manager from time to time. In addition, the Dealer Manager has the right to buy Rights offered to it by the Subscription Agent from electing Record Date Shareholders, and the Dealer Manager may purchase such Rights as principal or act as agent on behalf of its clients for the resale of such Rights.

In order to seek to facilitate the trading market in the Rights for the benefit of non-exercising Common Shareholders, and the placement of the Common Shares to new or existing investors pursuant to the exercise of the Rights, the Dealer Manager Agreement provides for special arrangements with the Dealer Manager. Under these arrangements, the Dealer Manager is expected to purchase Rights on the NYSE. The number of Rights, if any, purchased by the Dealer Manager will be determined by the Dealer Manager in its sole discretion. The Dealer Manager is not obligated to purchase Rights or Common Shares as principal for its own account to facilitate the trading market for Rights or for investment purposes. Rather, its purchases are expected to be closely related to interest in acquiring Common Shares generated by the Dealer Manager through its marketing and soliciting activities. The Dealer Manager intends to exercise Rights purchased by it during the Subscription Period but prior to the Expiration Date. The Dealer Manager may exercise those Rights at its option on one or more dates, which are expected to be prior to the Expiration Date. The subscription price for the Common Shares issued through the exercise of Rights by the Dealer Manager prior to the Expiration Date will be the greater of 95% of the last reported sale price of a Common Share on the NYSE on the date of exercise or 92% of the Fund’s NAV per Common Share at the close of trading on the NYSE prior to the date of exercise. The price and timing of these exercises are expected to differ from those described herein for the Rights offering. The Subscription Price will be paid to the Fund and the dealer manager fee with respect to such proceeds will be paid by the Fund on the applicable settlement date(s) of such exercise(s).

In connection with the exercise of Rights and receipt of Common Shares, the Dealer Manager intends to offer those Common Shares for sale to the public and/or through Selling Group Members it has established. The Dealer Manager may set the price for those Common Shares at any price that it determines, in its sole discretion. The Dealer Manager has advised that the price at which such Common Shares are offered is expected to be at or slightly below the closing price of the Common Shares on the NYSE on the date the Dealer Manager exercises Rights. No portion of the amount paid to the Dealer Manager or to a Selling Group Member from the sale of Common Shares in this manner will be paid to the Fund. If the sales price of the Common Shares is greater than the subscription price paid by the Dealer Manager for such Common Shares plus the costs to purchase Rights for the purpose of acquiring those Common Shares, the Dealer Manager will receive a gain. Alternatively, if the sales price of the Common Shares is less than the Subscription Price for such Common Shares plus the costs to purchase Rights for the purpose of acquiring those Common Shares, the Dealer Manager will incur a loss. The Dealer Manager will pay a concession to Selling Group Members in an amount equal to approximately 2.00% of the aggregate price of the Common Shares sold by the respective Selling Group Member. Neither the Fund nor the Investment Adviser has a role in setting the terms, including the sales price, on which the Dealer Manager offers for sale and sells Common Shares it has acquired through purchasing and exercising Rights or the timing of the exercise of Rights or sales of Common Shares by the Dealer Manager. Persons who purchase Common Shares from the Dealer Manager or a Selling Group Member will purchase Common Shares at a price set by the Dealer Manager, which may be more or less than the Subscription Price, based on the Formula Price mechanism through which Common Shares will be sold in the Rights offering, and at a time set by the Dealer Manager, which is expected to be prior to the Expiration Date, and will not have the uncertainty of waiting for the determination of the Subscription Price on the Expiration Date.

The Dealer Manager may purchase Rights as principal or act as agent on behalf of its clients for the resale of such Rights. The Dealer Manager may realize gains (or losses) in connection with the purchase and sale of Rights and the sale of Common Shares, although such transactions are intended by the Dealer Manager to facilitate the trading market in the Rights and the placement of the Common Shares to new or existing investors pursuant to the exercise of the Rights. Any gains (or losses) realized by the Dealer Manager from the purchase and sale of Rights and the sale of Common Shares are independent of and in addition to its fee as Dealer Manager. The Dealer Manager has advised that any such gains (or losses) are expected to be immaterial relative to its fee as Dealer Manager.

Since neither the Dealer Manager nor persons who purchase Common Shares from the Dealer Manager or Selling Group Members were Record Date Shareholders, they would not be able to participate in the over-subscription privilege.

There is no limit on the number of Rights the Dealer Manager can purchase or exercise. Common Shares acquired by the Dealer Manager pursuant to the exercise of Rights acquired by it will reduce the number of Common Shares available pursuant to the over-subscription privilege, perhaps materially, depending on the number of Rights purchased and exercised by the Dealer Manager.

Although the Dealer Manager can seek to facilitate the trading market for Rights as described above, investors can acquire Common Shares at the Subscription Price by acquiring Rights on the NYSE and exercising them in the method described above under “Terms of the Offer—Method for Exercise of Rights” and “Terms of the Offer—Payment for Common Shares.”

In the ordinary course of their businesses, the Dealer Manager and/or its affiliates may engage in investment banking or financial transactions with the Fund, the Investment Adviser and their affiliates. In addition, in the ordinary course of their businesses, the Dealer Manager and/or its affiliates may, from time to time, own securities of the Fund or its affiliates.

The principal business address of the Dealer Manager is 11 Madison Avenue, New York, New York 10010.

Compensation to Dealer Manager

Pursuant to the Dealer Manager Agreement, the Fund has agreed to pay the Dealer Manager a fee for its financial structuring and solicitation services equal to 3.50% of the Subscription Price per Common Share for each Common Share issued pursuant to the exercise of Rights, including the over-subscription privilege.

The Dealer Manager will reallow to Selling Group Members in the Selling Group to be formed and managed by the Dealer Manager selling fees equal to 2.00% of the Subscription Price for each Common Share issued pursuant to the Offer or the over-subscription privilege as a result of their selling efforts. In addition, the Dealer Manager will reallow to Soliciting Dealers that have executed and delivered a Soliciting Dealer Agreement and have solicited the exercise of Rights, solicitation fees equal to 0.50% of the Subscription Price for each Common Share issued pursuant to the exercise of Rights as a result of their soliciting efforts, subject to a maximum fee based on the number of Common Shares held by such Soliciting Dealer through DTC on the Record Date. Fees will be paid to the broker-dealer designated on the applicable portion of the subscription certificates or, in the absence of such designation, to the Dealer Manager.

In addition, the Fund, has agreed to pay the Dealer Manager an amount up to $150,000 as a partial reimbursement of its expenses incurred in connection with the Offer, including reasonable out-of-pocket fees and expenses, if any, and not to exceed $10,000, incurred by the Dealer Manager, Selling Group Members, Soliciting Dealers and other brokers, dealers and financial institutions in connection with their customary mailing and handling of materials related to the Offer to their customers. The fees described above are one-time fees payable on each date on which the Fund issues Common Shares after the Expiration Date with respect to the Dealer Manager, and on or before the tenth business day following the day the Fund issues Common Shares after the Expiration Date with respect to a Selling Group Member or Soliciting Dealer. No other fees will be payable by the Fund or the Investment Adviser to the Dealer Manager in connection with the Offer.

RECENT DEVELOPMENTS

New Investment Advisory Agreement

The Investment Adviser operates pursuant to an Eighth Amended and Restated Limited Partnership Agreement (the “Investment Adviser Operating Agreement”) among Jerry V. Swank, Swank Capital, LLC (“Swank Capital”), a Texas limited liability company wholly owned by Jerry V. Swank, and NXG Cushing, LLC (“NXG Cushing”), a Texas limited liability company owned by certain senior employees of the Investment Adviser (the “Management Group”). The Investment Adviser is managed by its general partner, Swank Capital. Senior management of the Investment Adviser currently directs the day-to-day operations of the Investment Adviser pursuant to authority delegated by Swank Capital as General Partner. Under the terms of the Investment Adviser Operating Agreement, in connection with Mr. Swank’s retirement from the Investment Adviser, Mr. Swank has agreed to reduce his ownership of the Investment Adviser, held directly and indirectly through Swank Capital (Mr. Swank’s ownership interest in the Investment Adviser, held directly and indirectly through Swank Capital, is referred to herein as the “Swank Ownership Interest”), over time along with a commensurate increase in ownership of the Investment Adviser by NXG Cushing, through increased quarterly revenue distributions from the Investment Adviser to Mr. Swank pursuant to the Investment Adviser Operating Agreement (the “Investment Adviser Ownership Plan”). When the interest of NXG Cushing in the Investment Adviser reaches 60%, NXG Cushing will automatically replace Swank Capital as the general partner of the Investment Adviser. Pursuant to the Investment Adviser Ownership Plan, it is expected that eventually Mr. Swank will divest the entire Swank Ownership Interest and NXG Cushing will hold 100% of the interests in the Investment Adviser. One or more of the transactions contemplated by the Investment Adviser Ownership Plan may be deemed to result in a change of control of the Investment Adviser which, as provided by the 1940 Act, will result in the automatic termination of the Fund’s Advisory Agreement according to its terms, and will require shareholders of the Fund to approve a new investment advisory agreement to permit the Investment Adviser to continue serving as investment adviser to the Fund. In accordance with the Investment Adviser Operating Agreement, such approval of a new investment advisory agreement will be required in connection with NXG Cushing acquiring a 25% interest in the Investment Adviser, which is expected to occur in 2026. In addition, NXG Cushing is pursuing financing options in order to accelerate the transfer of ownership of the Investment Adviser from Mr. Swank to NXG Cushing and result in NXG Cushing acquiring a 60% interest in the Investment Adviser and becoming General Partner of the Investment Adviser in 2026. If such accelerated transfer does not occur, the transfer of ownership from Mr. Swank to NXG Cushing will continue over time in accordance with the Investment Adviser Ownership Plan. To ensure that the existing advisory services provided by the Investment Adviser to the Fund can continue uninterrupted upon the acquisition by NXG Cushing of a 25% or greater ownership interest in the Investment Adviser, the Board of Trustees has approved a new investment advisory agreement between the Investment Adviser and the Fund and intends to submit such new investment advisory agreement to shareholders of the Fund for approval at an upcoming meeting of shareholders of the Fund.

LEGAL MATTERS

Certain legal matters will be passed on by Skadden, Arps, Slate, Meagher & Flom LLP, Chicago, Illinois, as special counsel to the Fund in connection with the Offer. Certain legal matters will be passed on by Dechert, LLP, New York, New York, as special counsel to the Dealer Manager in connection with the Offer.

INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Ernst & Young LLP, serves as the independent registered public accounting firm of the Fund and will annually render an opinion on the financial statements of the Fund. Ernst & Young LLP is located at 2323 Victory Avenue, Suite 2000, Dallas, Texas 75219.