Company: SRV
Filing Date: 2025-11-17
Form Type: 424B2
Source: 0001398344-25-021029
Chunk: 154

Company: NXG Cushing Midstream Energy Fund
Filing Date: 2025-11-17
Form: 424B2
Chunk 154
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” indicating that the principal portion is rated “AAA” and the interest portion of the obligation
is not rated.

L Ratings qualified
with ‘L’ apply only to amounts invested up to federal deposit insurance limits.

p This suffix is used
for issues in which the credit factors, the terms, or both, that determine the likelihood of receipt of payment of principal are different
from the credit factors, terms or both that determine the likelihood of receipt of interest on the obligation. The ‘p’ suffix
indicates that the rating addresses the principal portion of the obligation only. The ‘p’ suffix will always be used in conjunction
with the ‘i’ suffix, which addresses likelihood of receipt of interest. For example, a rated obligation could be assigned
ratings of “AAAp NRi” indicating that the principal portion is rated “AAA” and the interest portion of the obligation
is not rated.

pi Ratings with a
‘pi’ suffix are based on an analysis of an issuer’s published financial information, as well as additional information
in the public domain. They do not, however, reflect in-depth meetings with an issuer’s management and therefore may be based on
less comprehensive information than ratings without a ‘pi’ suffix. Ratings with a ‘pi’ suffix are reviewed annually
based on a new year’s financial statements, but may be reviewed on an interim basis if a major event occurs that may affect the
issuer’s credit quality.

preliminary Preliminary
ratings, with the ‘prelim’ suffix, may be assigned to obligors or obligations, including financial programs, in the circumstances
described below. Assignment of a final rating is conditional on the receipt by S&P of appropriate documentation. S&P reserves
the right not to issue a final rating. Moreover, if a final rating is issued, it may differ from the preliminary rating.

| ● | Preliminary ratings may be assigned                                                           
 to obligations, most commonly structured and project finance issues, pending receipt of final 
 documentation and legal opinions.                                                             |

| ● | Preliminary ratings are assigned                                                                 
 to Rule 415 Shelf Registrations. As specific issues, with defined terms, are offered             
 from the master registration, a final rating may be assigned to them in accordance with Standard 
 & Poor’s policies.                                                                               |

| ● | Preliminary ratings may be assigned                                                                
 to obligations that will likely be issued upon the obligor’s emergence from bankruptcy             
 or similar reorganization, based on late-stage reorganization plans, documentation and discussions 
 with the oblig