Company: SRV
Filing Date: 2025-10-22
Form Type: N-2/A
Source: 0001398344-25-019582
Chunk: 129

Company: NXG Cushing Midstream Energy Fund
Filing Date: 2025-10-22
Form: N-2/A
Chunk 129
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 used or referred to by the undersigned
Registrants;

(3)

the
portion of any other free writing prospectus or advertisement pursuant to Rule 482 under the Securities Act relating to the offering
containing material information about the undersigned Registrant or its securities provided by or on behalf of the undersigned Registrant;
and

(4)

any
other communication that is an offer in the offering made by the undersigned Registrant to the purchaser.

| 4. | Registrant undertakes that, for the purpose of determining any liability under the Securities Act of 1933, the information omitted from the form of prospectus filed as part of the Registration Statement in reliance upon Rule 430A and contained in the form of prospectus filed by the Registrant pursuant to Rule 424(b)(1) under the Securities Act of 1933 shall be deemed to be a part of the Registration Statement as of the time it was declared effective. |

Registrant undertakes that, for the purpose
of determining any liability under the Securities Act of 1933, each post-effective amendment that contains a form of prospectus shall
be deemed to be a new Registration Statement relating to the securities offered therein, and the offering of such securities at that time
will be deemed to be the initial bona fide offering thereof.

| 5. | Registrant undertakes that, for the purpose of determining any liability under the Securities Act of 1933, each filing of the Registrant’s annual report pursuant to Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934 that is incorporated by reference into the registration statement shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof. |

<div align='center'>C-8</div>

| 6. | Not applicable. |

| 7. | Registrant undertakes to send by first class mail or other means designed to ensure equally prompt delivery, within two business days of receipt of a written or oral request, any Statement of Additional Information constituting Part B of this Registration Statement. |

<div align='center'>C-9

SIGNATURES</div>

As required by the Securities
Act of 1933, as amended, and the Investment Company Act of 1940, as amended, this Registrant’s Registration Statement has been
signed on behalf of the Registrant, in the City of Dallas