| OGE Enogex Partners L.P. | Dec 31 |
| ONEOK PARTNERS INTERMEDIATE LP | Dec 31 |
| ONEOK Partners LP | Feb 16 |
| PAA NATURAL GAS STORAGE LP | Dec 31 |
| PANENERGY CORP | Dec 31 |
| PANHANDLE EASTERN PIPE LINE COMPANY, LP | Dec 31 |
| PennTex Midstream Partners, LP | Dec 31 |
| PEOPLES GAS LIGHT & COKE CO | Sep 30 |
| PVR PARTNERS, L. P. | Dec 31 |
| QEP Field Services Co | Dec 31 |
| QUESTAR PIPELINE CO | Dec 31 |
| RATTLER MIDSTREAM LP | Dec 31 |
| Rice Midstream Partners LP | Dec 31 |
| Sino Gas International Holdings, Inc. | Dec 31 |
| SONAT INC | Dec 31 |
| Southcross Energy Partners LLC | Dec 31 |
| SOUTHEASTERN MICHIGAN GAS CO | Dec 31 |
| SOUTHERN CALIFORNIA GAS CO | Dec 31 |
| SOUTHERN NATURAL GAS COMPANY, L.L.C. | Dec 31 |
| SOUTHERN STAR CENTRAL CORP | Feb 4 |
| SOUTHERN UNION CO | Dec 31 |
| Spectra Energy Capital, LLC | Dec 31 |
| Spectra Energy Partners, LP | Dec 31 |
| Summit Midstream Holdings, LLC | Dec 31 |
| Summit Midstream Partners, LP | Dec 31 |
| Tallgrass Energy, LP | Dec 31 |
| Tallgrass Energy Partners, LP | Dec 31 |
| Targa Energy LP | Dec 31 |
| Targa Pipeline Partners LP | Dec 31 |
| Targa Resources Partners LP | Dec 31 |
| TC PIPELINES LP | Dec 31 |
| TEJAS GAS CORP | Dec 31 |
| TENNESSEE GAS PIPELINE COMPANY, L.L.C. | Dec 31 |
| TE PRODUCTS PIPELINE CO LLC | Dec 31 |
| TEXAS EASTERN TRANSMISSION LP | Dec 31 |
| TEXAS GAS TRANSMISSION LLC | Dec 31 |
| Third Coast Midstream, LLC | Dec 31 |
| TRANSCANADA CAPITAL | Dec 31 |
| TransCanada Trust | Dec 31 |
| TRANSCO ENERGY CO | Dec 31 |
| TRANSCONTINENTAL GAS PIPE LINE COMPANY, LLC | Dec 31 |
| TRANSCO PLC | Dec 31 |
| TRANSOK INC | Dec 31 |
| TRI Resources Inc. | Dec 31 |
| WASHINGTON NATURAL GAS CO | Sep 30 |
| WESTERN GAS PROCESSORS LTD | Dec 31 |
| Western Midstream Operating, LP | Dec 31 |
| Williams Partners L.P. | Dec 31 |
| WILLIAMS PARTNERS L.P. | Dec 31 |
| WILLIAMS PIPELINE PARTNERS L.P. | Dec 31 |
| WISCONSIN GAS LLC | Dec 31 |
| WISCONSIN NATURAL GAS CO | Dec 31 |