Company: SRV
Filing Date: 2025-01-14
Form Type: 424B2
Source: 0001398344-25-000635
Chunk: 15

Company: NXG Cushing Midstream Energy Fund
Filing Date: 2025-01-14
Form: 424B2
Chunk 15
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 currently outstanding Common Shares
are, and the Common Shares offered pursuant to this Prospectus Supplement and the accompanying Prospectus will be, subject to notice of
issuance, listed on the NYSE. The Common Shares commenced trading on the NYSE on August 27, 2007.

The Common Shares have traded both at a premium and
at a discount to the Fund’s NAV per Common Share. Although the Common Shares recently have traded at a premium to NAV, there can
be no assurance that this will continue after the offering nor that the Common Shares will not trade at a discount in the future. Shares
of closed-end investment companies frequently trade at a discount to NAV. The Fund’s NAV will be reduced immediately following an
offering of the Common Shares due to the costs of such offering, which will be borne entirely by the Fund. The sale of Common Shares by
the Fund (or the perception that such sales may occur) may have an adverse effect on prices of Common Shares in the secondary market.
An increase in the number of Common Shares available for sale may result in downward pressure on the market price for Common Shares. See
“Additional Information (Unaudited)—Risks—Market Discount From Net Asset Value” in the Annual Report, which is
incorporated by reference herein.

The following table sets forth, for each of the periods
indicated, the high and low closing market prices for the Common Shares on the NYSE, the net asset value per Common Share and the premium
or discount to net asset value per Common Share at which the Common Shares were trading.

| S-7 |

| Fiscal Quarter Ended 
 February 29, 2024    |     | Market Price 
 High         | 37.86 |     | Low | 32.51 |     | Corresponding Net 
 Asset Value Per   
 Common Share      
 High              | 37.71 |     | Low | 36.14 |     | Corresponding      
 Premium/(Discount) 
 as a Percentage of 
 Net Asset Value    
 High               | 0.40 | % |     | Low | -10.04 | % |
|:---------------------|:----|:-------------|------:|:----|:----|------:|:----|:------------------|------:|:----|:----|------:|:----|:-------------------|-----:|:--|:----|:----|-------:|:--|
| May 31, 2024         |