| EXCO OPERATING | DALLAS, TX | INDIVIDUAL | 101 | $347.6M |
| TRINITY OPERATING USG | — | INDIVIDUAL | 49 | $129.1M |
| BUFFCO PRODUCTION | — | INDIVIDUAL | 17 | $100.8M |
| FORMENTERA OPERATIONS | AUSTIN, TX | INDIVIDUAL | 7 | $46.6M |
| U S ENERGY DEVELOPMENT | — | INDIVIDUAL | 42 | $46.4M |
| KL AND L TRAYLOR | BATESVILLE, TX | INDIVIDUAL | 36 | $27.8M |
| CML EXPLORATION | SNYDER, TX | INDIVIDUAL | 67 | $23.5M |
| AGERON ENERGY | SAN ANTONIO, TX | INDIVIDUAL | 9 | $14.6M |
| HAUSSER RANCH MINERALS | SAN ANTONIO, TX | INDIVIDUAL | 1 | $14.0M |
| MAGNOLIA OIL AND GAS OPERATING | — | INDIVIDUAL | 11 | $9.7M |
| HOLDSWORTH MINERALS | — | INDIVIDUAL | 27 | $9.2M |
| SOUTH TEXAS CHILDREN S HOME LAND | BEEVILLE, TX | INDIVIDUAL | 5 | $9.1M |
| BODDEN ROBBIE ADAMS FAMILY | DALLAS, TX | INDIVIDUAL | 39 | $7.7M |
| B AND R LAND AND CATTLE | — | INDIVIDUAL | 17 | $7.6M |
| EAGLEFORD MINERALS | — | INDIVIDUAL | 9 | $7.6M |
| MCCOMBS EXPLORATION | SAN ANTONIO, TX | INDIVIDUAL | 39 | $7.6M |
| CENIZO INVESTMENTS | CRYSTAL CITY, TX | INDIVIDUAL | 20 | $7.5M |
| SAP AUSTIN CHALK I | HOUSTON, TX | INDIVIDUAL | 11 | $7.1M |
| ETOCO | HOUSTON, TX | INDIVIDUAL | 1 | $6.7M |
| BODDEN ROBBIE A MARITAL | — | INDIVIDUAL | 39 | $6.6M |
| TAYLOR MORGAN KAY 2010 | CRYSTAL CITY, TX | INDIVIDUAL | 17 | $6.5M |
| LV RANCH | — | INDIVIDUAL | 22 | $6.0M |
| INEOS USA OIL AND GAS | — | INDIVIDUAL | 6 | $5.7M |
| DUNBAR JANE KEMBLE | SHERIDAN, WY | INDIVIDUAL | 5 | $5.2M |
| CHEVRON USA RI OR | — | INDIVIDUAL | 12 | $5.2M |
| RATLIFF GENEVIEVE W | WICHITA FALLS, TX | INDIVIDUAL | 10 | $5.0M |
| ZAVALA II | — | INDIVIDUAL | 5 | $5.0M |
| PROSPECT THE | — | INDIVIDUAL | 17 | $4.6M |
| BAUERLE CYNTHIA | — | INDIVIDUAL | 15 | $4.2M |
| BLACKBRUSH O AND G | — | INDIVIDUAL | 1 | $4.1M |
| S AND J MINERAL INVESTMENTS | NEW BRAUNFELS, TX | INDIVIDUAL | 10 | $4.1M |
| TRAILBLAZER ENERGY RESOURCES | — | INDIVIDUAL | 5 | $3.8M |
| KOONTZ MARYLAND DORE | SAN ANTONIO, TX | INDIVIDUAL | 39 | $3.8M |
| KOONTZ MINERALS | SAN ANTONIO, TX | INDIVIDUAL | 39 | $3.8M |
| THOMPSON MYRTA FLAYE INVESTMENTS | — | INDIVIDUAL | 13 | $3.6M |
| ATLAS OPERATING | HOUSTON, TX | INDIVIDUAL | 15 | $3.6M |
| TIDWELL BILLY J AND BARBARA | — | INDIVIDUAL | 14 | $3.5M |
| MIDLAND | — | INDIVIDUAL | 20 | $3.5M |
| COSMED | — | INDIVIDUAL | 18 | $3.5M |
| HADLOCK NOBLE GATES FAMILY | — | INDIVIDUAL | 6 | $2.8M |
| GLASSCOCK HERITAGE | — | INDIVIDUAL | 5 | $2.8M |
| YATES SARAH B | SAN ANTONIO, TX | INDIVIDUAL | 16 | $2.6M |
| LLM REAL HOLDINGS | — | INDIVIDUAL | 5 | $2.6M |
| HIDEAWAY RANCH MINERALS | FRIENDSWOOD, TX | INDIVIDUAL | 16 | $2.6M |
| WHITECOTTON FRANKLIN THOMAS | — | INDIVIDUAL | 26 | $2.6M |
| WILSON GATES HERITAGE | — | INDIVIDUAL | 3 | $2.5M |
| PETTY GROUP LLP | — | ENTITY | 17 | $2.4M |
| SNYDER SUSAN DUNBAR | — | INDIVIDUAL | 5 | $2.4M |
| YATES JOHN GRIFFIN JR | AUSTIN, TX | INDIVIDUAL | 16 | $2.3M |
| HARDMAN AMY WINTERBOTHAM | — | INDIVIDUAL | 5 | $2.2M |
| SIMPSON ELIZABETH EASTHAM | HOUSTON, TX | INDIVIDUAL | 5 | $2.0M |
| KING MARY EASTHAM | — | INDIVIDUAL | 5 | $2.0M |
| SC MINERALS | — | INDIVIDUAL | 5 | $2.0M |
| FLOURNOY MINERALS | HOUSTON, TX | INDIVIDUAL | 4 | $2.0M |
| BOWERMASTER NANCY ANN | — | INDIVIDUAL | 3 | $1.9M |
| BROWN CAROL L A | EDWARDS, CO | INDIVIDUAL | 26 | $1.9M |
| WINN CC FAMILY | — | INDIVIDUAL | 12 | $1.9M |
| BLAKEY COLETTE GLASSCOCK | — | INDIVIDUAL | 13 | $1.9M |
| FERNCLIFF INVESTMENTS | — | INDIVIDUAL | 17 | $1.8M |
| OLIVER CHARLES RAY JR | — | INDIVIDUAL | 3 | $1.8M |
| TALAMAS PATRICK | SAN, TX | INDIVIDUAL | 53 | $1.8M |
| PRATT 1991 | HOUSTON, TX | INDIVIDUAL | 5 | $1.7M |
| BREWER MARIA W | HOUSTON, TX | INDIVIDUAL | 5 | $1.7M |
| ALC MINERALS | SAN ANTONIO, TX | INDIVIDUAL | 11 | $1.6M |
| BOULDERS LAND AND MINERAL | — | INDIVIDUAL | 16 | $1.6M |
| VR4 MORIA | — | INDIVIDUAL | 7 | $1.6M |
| SANCHEZ OIL AND GAS EMPLOYEES | HOUSTON, TX | INDIVIDUAL | 4 | $1.5M |
| HOLDSWORTH HENRY | — | INDIVIDUAL | 9 | $1.5M |
| RICKAWAY ENERGY | — | INDIVIDUAL | 8 | $1.5M |
| BOWMAN BARBARA | — | INDIVIDUAL | 15 | $1.5M |
| PETTY FAMILY LIMITED PTNSHP | — | INDIVIDUAL | 17 | $1.4M |
| SMITH BEVERLY LYNN | — | INDIVIDUAL | 6 | $1.4M |
| SMITH REBECCA LOIS REV | — | INDIVIDUAL | 6 | $1.4M |
| KELSO PHILIP | — | INDIVIDUAL | 10 | $1.4M |
| WHITECOTTON RANCH MINERALS | — | INDIVIDUAL | 26 | $1.3M |
| PAUL M BOMMER EXEMPT | — | INDIVIDUAL | 5 | $1.3M |
| PETER A BOMMER EXEMPT | — | INDIVIDUAL | 5 | $1.3M |
| GUENTHER OIL AND GAS | SAN ANTONIO, TX | INDIVIDUAL | 11 | $1.2M |
| THOMPSONVILLE MINERALS | — | INDIVIDUAL | 9 | $1.2M |
| TEXAS OSAGE ROYALTY POOL | SAN ANTONIO, TX | INDIVIDUAL | 10 | $1.2M |
| PETTY BUSINESS ENTERPRISES | — | INDIVIDUAL | 18 | $1.1M |
| WALSH MARGARET L BRICE | — | INDIVIDUAL | 15 | $1.1M |
| SAGE ENERGY | SAN ANTONIO, TX | INDIVIDUAL | 6 | $1.1M |
| CC WINN FAMILY 1989 | — | INDIVIDUAL | 12 | $1.1M |
| PICKETT JACKSON B III REV | AUSTIN, TX | INDIVIDUAL | 3 | $1.1M |
| TRINITY PETROLEUM | — | INDIVIDUAL | 1 | $1.0M |
| PETRO PARDS | — | INDIVIDUAL | 3 | $1.0M |
| FLINT OAK ENERGY | MONTGOMERY, TX | INDIVIDUAL | 15 | $1.0M |
| CAMPBELL RANCH MINERALS | LITTLE ROCK, AR | INDIVIDUAL | 14 | $1.0M |
| TRAYLOR MARY WEST | — | INDIVIDUAL | 13 | $1.0M |
| WILSON WILLIAM N AND NORMA J | — | INDIVIDUAL | 4 | $955K |
| THOMPSON HARRY F IV 2006 | CRYSTAL CITY, TX | INDIVIDUAL | 16 | $934K |
| THOMPSON TRATE WALTER 2009 | CRYSTAL CITY, TX | INDIVIDUAL | 16 | $934K |
| JACKPOT MINERALS | — | INDIVIDUAL | 6 | $932K |
| MUD MONEY | — | INDIVIDUAL | 6 | $932K |
| MMB MINERALS | — | INDIVIDUAL | 6 | $932K |
| CONTANGO RESOURCES | OKLAHOMA CITY, OK | INDIVIDUAL | 30 | $910K |
| HARDY NANCY | SAN ANTONIO, TX | INDIVIDUAL | 12 | $896K |
| MARX DAVID AND DIANE | SAN ANTONIO, TX | INDIVIDUAL | 12 | $896K |
| PRIEST JANIS G | — | INDIVIDUAL | 1 | $890K |
