Company: SRV
Filing Date: 2025-11-17
Form Type: 424B2
Source: 0001398344-25-021029
Chunk: 59

Company: NXG Cushing Midstream Energy Fund
Filing Date: 2025-11-17
Form: 424B2
Chunk 59
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 net assets attributable to common shares) is used, the management fees,     
 as a percentage of net assets attributable to common shares would be higher than as shown 
 above.                                                                                    |

| (5) | Based upon the Fund’s outstanding                                                                        
 borrowings as of May 31, 2025 of $60,315,000 million and the interest rate as of May 31, 2025, of 5.07%. |

| (6) | “Other expenses” are estimated                                                             
 based upon those incurred during the fiscal period ended November 30, 2024. Other expenses 
 do not include expense related to realized or unrealized investment gains or losses.       |

| (7) | The Investment Adviser has contractually                                                   
 agreed to waive a portion of the management fee in the amount equal to 0.25% of the Fund’s 
 Managed Assets through  12 months after the date of effectiveness                          
 of the Registration Statement of which this Prospectus is a part. Prior to the termination 
 date, the waiver agreement may be modified, waived or terminated only with the consent of  
 the Board of Trustees.                                                                     |

<div align='center'>7</div>

EXAMPLE

As
required by relevant SEC regulations, the following example illustrates the expenses that you would pay on a $1,000 investment in
Common Shares, assuming (1) “Total annual expenses” of 4.21% of net assets attributable to Common Shares in Year 1 and
thereafter 4.21% of net assets attributable to Common Shares and (4) a 5.00% annual return*:

|                         |     | 1 Year |    |     | 3 Years |     |     | 5 Years |     |     | 10 Years |     |
|:------------------------|:----|:-------|---:|:----|:--------|----:|:----|:--------|----:|:----|:---------|----:|
| Total expenses incurred |     | $      | 42 |     | $       | 128 |     | $       | 215 |     | $        | 438 |

| * | The example should not be considered a                                                       
 representation of future expenses or returns. Actual expenses may be greater or less than    
 those shown. Moreover, the Fund’s actual rate of return may be greater or less               
 than the hypothetical 5% return shown in the example. The example assumes that all dividends 
 and distributions are rein