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          <officeAddress1>615 East Michigan Street</officeAddress1>
          <officeCity>Milwaukee</officeCity>
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        <relyOnRuleTypes>
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          <relyOnRuleType>Rule 18f-4 (17 CFR 270.18f-4)</relyOnRuleType>
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    <signature registrantSignedName="NXG Cushing Midstream Energy Fund" signedDate="2026-06-30" signature="/s/ John Musgrave" title="CEO and President"/>
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