X0708 D LIVE 0002138762 Mewbourne Energy Partners 26-A, L.P. 3620 OLD BULLARD ROAD TYLER TX TEXAS 75701 903-561-2900 DELAWARE None None Limited Partnership true 2026 J. Roe Buckley 3620 Old Bullard Road Tyler TX TEXAS 75701 Executive Officer Director Director and Executive Officer of Mewbourne Development Corporation, the managing general partner and promoter of the Issuer. Kenneth Waits 3620 Old Bullard Road Tyler TX TEXAS 75701 Executive Officer Executive Officer of Mewbourne Development Corporation, the managing general partner and promoter of the Issuer. Dorothy M. Cuenod 3620 Old Bullard Road Tyler TX TEXAS 75701 Director Director of Mewbourne Development Corporation, the managing general partner and promoter of the Issuer. Ruth M. Buckley 3620 Old Bullard Road Tyler TX TEXAS 75701 Director Director of Mewbourne Development Corporation, the managing general partner and promoter of the Issuer. Julie M. Greene 3620 Old Bullard Road Tyler TX TEXAS 75701 Director Director of Mewbourne Development Corporation, the managing general partner and promoter of the Issuer. Donald R. Russell 3620 Old Bullard Road Tyler TX TEXAS 75701 Executive Officer Executive Officer of Mewbourne Development Corporation, the managing general partner and promoter of the Issuer. Oil and Gas Decline to Disclose 06b false 2026-06-04 false true false 20000 Arete Wealth Management, LLC 44856 None None 1115 W Fulton Market 3rd Floor Chicago IL ILLINOIS 60607 All States false Arkadios Capital 282710 None None 2827 Peachtree Rd NE Suite 510 Atlanta GA GEORGIA 30305 All States false Ausdal Financial Partners, Inc. 7995 None None 5187 Utica Ridge Rd Davenport IA IOWA 52807 AL ALABAMA AK ALASKA AZ ARIZONA AR ARKANSAS CA CALIFORNIA CO COLORADO CT CONNECTICUT DE DELAWARE DC DISTRICT OF COLUMBIA FL FLORIDA GA GEORGIA HI HAWAII ID IDAHO IL ILLINOIS IN INDIANA IA IOWA KS KANSAS KY KENTUCKY LA LOUISIANA ME MAINE MD MARYLAND MA MASSACHUSETTS MI MICHIGAN MN MINNESOTA MS MISSISSIPPI MO MISSOURI MT MONTANA NE NEBRASKA NV NEVADA NH NEW HAMPSHIRE NJ NEW JERSEY NM NEW MEXICO NY NEW YORK NC NORTH CAROLINA ND NORTH DAKOTA OH OHIO OK OKLAHOMA OR OREGON PA PENNSYLVANIA PR PUERTO RICO RI RHODE ISLAND SC SOUTH CAROLINA SD SOUTH DAKOTA TN TENNESSEE TX TEXAS UT UTAH VT VERMONT VA VIRGINIA WA WASHINGTON WV WEST VIRGINIA WI WISCONSIN WY WYOMING false Cabin Securities, Inc. 137608 None None 6240 W 135th Street Suite 214 Overland Park KS KANSAS 66223 AL ALABAMA AK ALASKA AZ ARIZONA AR ARKANSAS CA CALIFORNIA CO COLORADO CT CONNECTICUT DE DELAWARE DC DISTRICT OF COLUMBIA FL FLORIDA GA GEORGIA HI HAWAII ID IDAHO IL ILLINOIS IN INDIANA IA IOWA KS KANSAS KY KENTUCKY LA LOUISIANA ME MAINE MD MARYLAND MA MASSACHUSETTS MI MICHIGAN MN MINNESOTA MS MISSISSIPPI MO MISSOURI MT MONTANA NE NEBRASKA NV NEVADA NH NEW HAMPSHIRE NJ NEW JERSEY NM NEW MEXICO NY NEW YORK NC NORTH CAROLINA ND NORTH DAKOTA OH OHIO OK OKLAHOMA OR OREGON PA PENNSYLVANIA PR PUERTO RICO RI RHODE ISLAND SC SOUTH CAROLINA SD SOUTH DAKOTA TN TENNESSEE TX TEXAS UT UTAH VT VERMONT VA VIRGINIA WA WASHINGTON WV WEST VIRGINIA WI WISCONSIN WY WYOMING false Cambridge Investment Research, Inc. 39543 None None 1776 Pleasant Plain Rd. 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Orange Street Suite 729 Wilmington DE DELAWARE 19801 AL ALABAMA AK ALASKA AZ ARIZONA AR ARKANSAS CA CALIFORNIA CO COLORADO CT CONNECTICUT DE DELAWARE DC DISTRICT OF COLUMBIA FL FLORIDA GA GEORGIA HI HAWAII ID IDAHO IL ILLINOIS IN INDIANA IA IOWA KS KANSAS KY KENTUCKY LA LOUISIANA ME MAINE MD MARYLAND MA MASSACHUSETTS MI MICHIGAN MN MINNESOTA MS MISSISSIPPI MO MISSOURI MT MONTANA NE NEBRASKA NV NEVADA NH NEW HAMPSHIRE NJ NEW JERSEY NM NEW MEXICO NY NEW YORK NC NORTH CAROLINA ND NORTH DAKOTA OH OHIO OK OKLAHOMA OR OREGON PA PENNSYLVANIA PR PUERTO RICO RI RHODE ISLAND SC SOUTH CAROLINA SD SOUTH DAKOTA TN TENNESSEE TX TEXAS UT UTAH VT VERMONT VA VIRGINIA WA WASHINGTON WV WEST VIRGINIA WI WISCONSIN WY WYOMING false The Strategic Financial Alliance, Inc. 126514 None None 2200 Century Parkway Suite 500 Atlanta GA GEORGIA 30345 All States false 150000000 38760000 111240000 false 186 10500000 0 Calculation of placement agent fees is based on the total offering amount. 0 false Mewbourne Energy Partners 26-A, L.P. /s/ J. Roe Buckley J. Roe Buckley Chrm, Ex. VP & CFO-Mewbourne Development Corporation, GP 2026-06-18