Company: SRV
Filing Date: 2025-11-17
Form Type: 424B2
Source: 0001398344-25-021029
Chunk: 146

Company: NXG Cushing Midstream Energy Fund
Filing Date: 2025-11-17
Form: 424B2
Chunk 146
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 Philip Goldstein(2)                
 Andrew Dakos                       
 250 Pehle Ave. Suite 708 Saddle    
 Brook, NJ 07663                    |     | Common Shares |     |          | 120,623 |     |            | 5.52% |

| (1) | Based on a Schedule 13G filed on January 3, 
 2025                                        |

| (2) | Based                                       
 on Schedule 13G filed on February 13, 2023. |

Independent Registered
Public Accounting Firm

Ernst & Young LLP, Dallas,
Texas, serves as the independent registered public accounting firm of the Fund and will annually render an opinion on the financial statements
of the Fund. The Fund’s audited financial statements appearing in the Fund’s annual report to shareholders for the period
ended November 30, 2024, including accompanying notes thereto and the report of Ernst & Young LLP thereon, have been incorporated
by reference herein in reliance on their report given on their authority as experts in accounting and auditing.

Proxy Voting Policy and
Procedures and Proxy Voting Record

The Fund has delegated authority
to vote proxies to the Investment Adviser, subject to the supervision of the Board of Trustees. Attached hereto as Appendix B is
the Proxy Voting Policy which is currently in effect as of the date of this Statement of Additional Information.

The Proxy Voting Policy
is subject to change over time and investors seeking the most current copy of the Proxy Voting Policy should call the Fund toll free
at (888) 777-2346. The Fund’s most recent proxy voting record for the period ended June 30 which has been filed with the SEC
is available without charge by calling the Fund toll free at (888) 777-2346.

Code of Ethics

The Fund and the Investment
Adviser have adopted a code of ethics under Rule 17j -1 of the 1940 Act. This code permits personnel subject to the code to invest
in securities, including securities that may be purchased or held by the Fund. The code of ethics is available on the EDGAR Database on
the SEC’s website (http://www.sec.gov), and copies of this code may be obtained, after paying a duplicating fee, by electronic request
at the following e-mail address: publicinfo@sec.gov.

Where You Can Find More Information

The Fund is subject to the informational requirements
of the Securities Exchange Act of 1934 (the “Exchange Act”) and