Company: SRV
Filing Date: 2025-11-17
Form Type: 424B2
Source: 0001398344-25-021029
Chunk: 21

Company: NXG Cushing Midstream Energy Fund
Filing Date: 2025-11-17
Form: 424B2
Chunk 21
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11, 2025* |
|:-------------------------------------------------------------------|:-------------------------------------|
| Final Date Rights Will Trade:                                      | December 10, 2025*                   |
| Expiration Date and Pricing Date:                                  | December 11, 2025*                   |
| Subscription Certificate and Payment for Shares Due+:              | December 11, 2025*                   |
| Notice of Guaranteed Delivery and Payment for Shares Due+:         | December 11, 2025*                   |
| Subscription Certificates Pursuant to Guarantees of Delivery Due+: | December 12, 2025*                   |
| Issuance Date:                                                     | December 18, 2025*                   |
| Confirmation Mailed to Participants:                               | December 23, 2025*                   |
| Final Payment for Shares Due:                                      | January 9, 2025†*                    |

| * | Unless the Offer is extended. |

| † | Any additional amount due (in the event the Subscription Price exceeds                  
 the estimated Subscription Price). See “Terms of the Offer––Payment for Common Shares.” |

Subscription Price

The Subscription Price per Common Share will be determined
based on a Formula Price equal to 95% of the average of the last reported sale price of a Common Share on the NYSE on the date on which
the Offer expires, as such date may be extended from time to time, and each of the four (4) preceding trading days. If, however, the Formula
Price is less than 92.5% of the NAV per Common Share at the close of trading on the NYSE on the Expiration Date, then the Subscription
Price will be 92.5% of the Fund’s NAV per Common Share at the close of trading on the NYSE on the Expiration Date. In each case,
NAV will be calculated as of the close of trading on the NYSE on the applicable day.

Because the Expiration Date of the subscription period
will be December 11, 2025 (unless the subscription period is extended), Rights holders will not know the Subscription Price at
the time of exercise and will be required initially to pay for both the Common Shares subscribed for pursuant to the primary subscription
and, if eligible, any additional Common Shares subscribed for pursuant to the over-subscription privilege at the estimated Subscription
Price of $40.24 per Common Share. See “—Payment for Common Shares.” A Rights holder will have no right to rescind his
subscription after the Subscription