X0708 D LIVE 0002160598 NexPoint Energy DST 300 CRESCENT COURT, SUITE 700 DALLAS TX TEXAS 75201 8336977253 DELAWARE None None Other Statutory Trust true 2026 James Dondero 300 Crescent Court Suite 700 Dallas TX TEXAS 75201 Executive Officer Luke Blackwell 300 Crescent Court Suite 700 Dallas TX TEXAS 75201 Executive Officer Frank Waterhouse 300 Crescent Court Suite 700 Dallas TX TEXAS 75201 Executive Officer [none] NexPoint Energy, L.P. 300 Crescent Court Suite 700 Dallas TX TEXAS 75201 Promoter [none] NexPoint Energy Parent Manager, LLC 300 Crescent Court Suite 700 Dallas TX TEXAS 75201 Promoter [none] OSL Energy Investment Co, LLC 300 Crescent Court Suite 700 Dallas TX TEXAS 75201 Promoter Other Real Estate Decline to Disclose 06c false true false true false 100000 NexPoint Securities, Inc. 165013 None None 200 CRESCENT COURT, SUITE 700 Dallas TX TEXAS 75201 All States false 18844000 0 18844000 false 0 1648850 true 0 2657460 true OSL Energy Investment Co, LLC will be responsible for paying certain fees and costs of approximately $2,657,460. false NexPoint Energy DST /s/ Frank Waterhouse Frank Waterhouse CFO of NexPoint Energy, L.P. sole member of Issuer's Manager 2026-10-20