Company: SRV
Filing Date: 2025-11-17
Form Type: 424B2
Source: 0001398344-25-021029
Chunk: 30

Company: NXG Cushing Midstream Energy Fund
Filing Date: 2025-11-17
Form: 424B2
Chunk 30
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 copies of this Prospectus Supplement and the accompanying Prospectus or subscription
certificates should be directed to the Information Agent. Common Shareholders may also contact their brokers or nominees for information
with respect to the Offer.

The Information Agent will receive a fee for its services,
plus reimbursement for all out-of-pocket expenses related to the Offer. The fees and expenses of the Information Agent are included in
the fees and expenses of the Offer and therefore will be borne by the Fund and indirectly by all of its Common Shareholders, including
those who do not exercise their Rights.

Expiration of the Offer

The Offer will expire at 5:00 p.m., Eastern time,
on December 11, 2025, unless the Fund extends the subscription period. Rights will expire on the Expiration Date and may not be exercised
after that date. If the Fund extends the subscription period, the Fund will make an announcement as promptly as practicable. This announcement
will be issued no later than 9:00 a.m., Eastern time, on the next business day following the previously scheduled Expiration Date.
Without limiting the manner in which the Fund may choose to make this announcement, the Fund will not, unless otherwise required by law,
have any obligation to publish, advertise or otherwise communicate this announcement other than by making a release to the Dow Jones News
Service or any other means of public announcement as the Fund may deem proper.

Payment for Common Shares

Rights holders who wish to acquire Common Shares pursuant
to the Offer may choose between the following methods of payment:

(1) A Rights holder can send the properly completed
and executed subscription certificate together with payment for the Common Shares subscribed for during the subscription period and, if
eligible, for any additional Common Shares subscribed for pursuant to the over-subscription privilege to the Subscription Agent based
upon an estimated Subscription Price of $40.24 per Common Share. A subscription will be accepted when payment, together with the executed
subscription certificate, is received by the Subscription Agent at one of the addresses set forth under “—Subscription Agent”,
the payment and the properly completed and executed subscription certificate must be received by the Subscription Agent by 5:00 p.m.,
Eastern time, on the Expiration Date. The Subscription Agent will deposit all checks received by it for the purchase of Common Shares
into a segregated account of the Fund pending proration and distribution of Common Shares. A payment pursuant to this method must be in
U.S. dollars by check drawn on a bank located in the United States, must