Company: SRV
Filing Date: 2025-11-17
Form Type: 424B2
Source: 0001398344-25-021029
Chunk: 8

Company: NXG Cushing Midstream Energy Fund
Filing Date: 2025-11-17
Form: 424B2
Chunk 8
---
 the accompanying Prospectus if, during the period that this Prospectus Supplement and the accompanying Prospectus is required
to be delivered, there are any subsequent material changes.

| vi |

<div align='center'>WHERE YOU CAN FIND MORE INFORMATION</div>

The Fund is subject to the informational requirements of the Securities
Exchange Act of 1934, as amended (the “Exchange Act”) and the 1940 Act, and in accordance therewith files, or will file, reports
and other information with the SEC. The SEC maintains a web site at www.sec.gov containing reports, proxy and information statements and
other information regarding registrants, including the Fund, that file electronically with the SEC.

This Prospectus Supplement and the accompanying Prospectus constitute part
of a Registration Statement filed by the Fund with the SEC under the Securities Act, and the 1940 Act (File Nos. 333-286482 and 811-22072).
This Prospectus Supplement and the accompanying Prospectus omit certain of the information contained in the Registration Statement, and
reference is hereby made to the Registration Statement and related exhibits for further information with respect to the Fund and the Common
Shares offered hereby. Any statements contained herein or in the accompanying Prospectus concerning the provisions of any document are
not necessarily complete, and, in each instance, reference is made to the copy of such document filed as an exhibit to the Registration
Statement or otherwise filed with the SEC. Each such statement is qualified in its entirety by such reference. The complete Registration
Statement may be obtained from the SEC upon payment of the fee prescribed by its rules and regulations or free of charge through the SEC’s
website (www.sec.gov).

The Fund will provide without charge to each person, including any beneficial
owner, to whom this Prospectus Supplement and the accompanying Prospectus are delivered, upon written or oral request, a copy of any and
all of the information that has been incorporated by reference in this Prospectus Supplement or the accompanying Prospectus. You may request
such information by calling (855) 862-6092 or by writing to NXG Investment Management at One Energy Square, 4925 Greenville Avenue, Suite
1310, Dallas, Texas 75206, or you may obtain a copy (and other information regarding the Fund) from the SEC’s website (www.sec.gov).
Free copies of this Prospectus Supplement, the accompanying Prospectus, the SAI and any incorporated information will also be available
from the Fund’s website at www.nxgim.com