Company: SRV
Filing Date: 2025-03-10
Form Type: PRE 14A
Source: 0001398344-25-005333
Chunk: 2

Company: NXG Cushing Midstream Energy Fund
Filing Date: 2025-03-10
Form: PRE 14A
Chunk 2
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GEN INFRASTRUCTURE INCOME FUND (NYSE: NXG)

One Energy Square
4925 Greenville Ave., Suite 1310

Dallas, Texas 75206

NOTICE OF JOINT ANNUAL MEETING OF SHAREHOLDERS

To be held on May 22, 2025</div>

Notice is hereby given to the
shareholders of each of NXG Cushing Midstream Energy Fund (“”) and NXG NextGen Infrastructure Income
Fund (“” and, together with SRV, the “” and each a “”) that the Joint
Annual Meeting of Shareholders of the Funds (the “”) will be held at the offices of the Funds, One Energy
Square, 4925 Greenville Ave., Suite 1310, Dallas, Texas 75206, on May 22, 2025 at 9:00 A.M. (Central time).

The Annual Meeting is being held
for the following purposes:

| 1. | To elect Trustees in the following manner (the “Election of the Trustees”): |

| (a) | With respect to SRV: To elect the Class III Trustee nominee named in the accompanying joint                                   
 proxy statement, Mr. John Musgrave, to hold office until SRV’s 2028 annual meeting or until his successor is elected and duly 
 qualified.                                                                                                                    |

| (b) | With respect to NXG: To elect the Class I Trustee nominees named in the accompanying joint                               
 proxy statement, Mr. Brian R. Bruce and Mr. John Musgrave, to hold office until NXG’s 2027 annual meeting or until their 
 respective successors are elected and duly qualified.                                                                    |

| 2. | To approve, upon a Change of Control Event (as defined in the enclosed Proxy Statement) prompted by the                                
 Adviser Ownership Plan (as defined in the enclosed Proxy Statement), a new investment advisory agreement between each Fund and Cushing 
 Asset Management, LP., and under certain circumstances, any future investment advisory agreements prompted by Change of Control Events 
 that may occur as parts of the Adviser Ownership Plan.                                                                                 |

| 3. | To transact such other business as may properly come before the Annual Meeting or any adjournments, postponements 
 or delays thereof.                                                                                                |

THE BOARD OF TRUSTEES OF EACH FUND (COLLECTIVELY, THE “ BOARD”), INCLUDING THE INDEPENDENT TRUSTEES, UNANIMOUSLY RECOMMENDS THAT YOU VOTE