Company: SRV
Filing Date: 2025-01-14
Form Type: 424B2
Source: 0001398344-25-000635
Chunk: 0

Company: NXG Cushing Midstream Energy Fund
Filing Date: 2025-01-14
Form: 424B2
Chunk 0
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Filed pursuant to Rule 424(B)(2)
File No. 333-273954

PROSPECTUS SUPPLEMENT
(to Prospectus dated November 13, 2023)

<div align='center'>NXG Cushing ®Midstream Energy Fund

Up to 745,000 Common Shares</div>

Investment Objective. NXG Cushing
Midstream Energy Fund (the “Fund”) is a non-diversified, closed-end management investment company. The Fund’s investment
objective is to obtain a high after-tax total return from a combination of capital appreciation and current income. There can be no assurance
that the Fund will achieve its investment objective.

The Offering. The Fund has entered into an Amended
and Restated Distribution Agreement, dated January 13, 2025 (the “Distribution Agreement”), with Foreside Fund Services,
LLC (the “Distributor”), pursuant to which the Fund may offer and sell up to 745,000 common shares of beneficial interest
of the Fund, par value $0.001 per share (“Common Shares”), from time to time, through the Distributor, in transactions that
are deemed to be “at the market” as defined in Rule 415 under the Securities Act of 1933, as amended (the “Securities
Act”). The minimum price on any day at which Common Shares may be sold will not be less than the then current net asset value (“NAV”)
per Common Share plus the per Common Share amount of the commission to be paid to the Distributor (the “Minimum Price”). The
Fund and the Distributor will determine whether any sales of Common Shares will be authorized on a particular day. The Fund and the Distributor,
however, will not authorize sales of Common Shares if the price per Common Share is less than the Minimum Price. The Fund and the Distributor
may elect not to authorize sales of Common Shares on a particular day even if the price per Common Share is equal to or greater than the
Minimum Price or may only authorize a fixed number of Common Shares to be sold on any particular day. The Fund and the Distributor will
have full discretion regarding whether sales of Common Shares will be authorized on a particular day and, if so, in what amounts.

The Distributor may enter into sub-placement agent
agreements with one or more selected dealers. The Distributor has entered into an Amended and Restated Sub-Placement Agent Agreement,
dated January 13, 2025 (the “Sub-Placement Agent