Company: SRV
Filing Date: 2025-05-22
Form Type: N-CSR/A
Source: 0001398344-25-010052
Chunk: 1

Company: NXG Cushing Midstream Energy Fund
Filing Date: 2025-05-22
Form: N-CSR/A
Chunk 1
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 securities are listed. Incorporated herein by reference to the Original Filing.

(3) A separate certification for each principal executive officer and principal financial officer of the registrant as required by Rule 30a-2(a) under the Investment Company Act of 1940 (17 CFR 270.30a-2(a)). Filed herewith.

(4) Any written solicitation to purchase securities under Rule
23c-1 under the Act sent or given during the period covered by the report by or on behalf of the registrant to 10 or more persons. Not
Applicable.

(5) There was no change
in the registrant’s independent public accountant for the period covered by this report.

| (b) | Certifications pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. Furnished herewith. |

| (c) | Consent of independent registered public accounting firm. Filed herewith. |

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

Pursuant to the requirements of the Securities Exchange Act of 1934 and
the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto
duly authorized.

| (Registrant)              | NXG Cushing Midstream Energy Fund                  |
| By (Signature and Title)* | /s/ John Musgrave                                  |
|                           | John Musgrave, President & Chief Executive Officer |
| Date                      | 5/22/2025                                          |

Pursuant to the requirements of the Securities Exchange Act of 1934 and
the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the
capacities and on the dates indicated.

| By (Signature and Title)* | /s/ John Musgrave                                    |
|                           | John Musgrave, President & Chief Executive Officer   |
| Date                      | 5/22/2025                                            |
| By (Signature and Title)* | /s/ Blake R. Nelson                                  |
|                           | Blake R. Nelson, Chief Financial Officer & Treasurer |
| Date                      | 5/22/2025                                            |

| * | Print the name and title of                      
 each signing officer under his or her signature. |