Company: SRV
Filing Date: 2025-11-17
Form Type: 424B2
Source: 0001398344-25-021029
Chunk: 31

Company: NXG Cushing Midstream Energy Fund
Filing Date: 2025-11-17
Form: 424B2
Chunk 31
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 be payable to “Equiniti Trust Company, LLC” and must
accompany a properly completed and executed subscription certificate for such subscription to be accepted.

| S-18 |

(2) Alternatively, a subscription will be accepted
by the Subscription Agent if, by 5:00 p.m., Eastern time, on the Expiration Date, the Subscription Agent has received a notice of
guaranteed delivery by mail or email from a bank, a trust company or an NYSE member guaranteeing delivery of a properly completed and
executed subscription certificate. In order for the notice of guarantee to be valid, full 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,
based upon an estimated Subscription Price of $40.24 per Common Share, must be received by the Subscription Agent with the notice of guaranteed
delivery. The Subscription Agent will not honor a notice of guaranteed delivery unless a properly completed and executed subscription
certificate is received by the Subscription Agent by the close of business on the first business day after the Expiration Date.

On the confirmation date, which will be eight business
days following the Expiration Date, a confirmation will be sent by the Subscription Agent to each Rights holder exercising its Rights
(or, if a Rights holder’s Common Shares are held by DTC or any other depository or nominee, to DTC and/or that other depository
or nominee) showing (i) the number of Common Shares acquired during the subscription period, (ii) the number of Common Shares, if any,
acquired pursuant to the over-subscription privilege, (iii) the per Common Share and total purchase price for the Common Shares and (iv)
any additional amount payable to the Fund by the Rights holder or any excess to be refunded by the Fund to the Rights holder, in each
case based on the Subscription Price as determined on the Expiration Date. Any additional payment required from a Rights holder must be
received by the Subscription Agent within ten business days after the confirmation date (which confirmation date is December 23,
2025, unless the subscription period is extended). Any excess payment to be refunded by the Fund to a Rights holder will be mailed by
the Subscription Agent to such Rights holder as promptly as practicable. All payments by a Rights holder must be in U.S. dollars by personal
check drawn on a bank located in the United States and payable to “Equiniti Trust Company, LLC.”

Whichever of