| Date | Name | Title | Type | Security | Shares | Price | Value | Ownership | Reported |
| 01/28/2019 | LUKE JOHN A JR | Director | Disposition | Common Units (Limited Partner Interests) | 5k | $0.00 | $0 | | 01/28/2019 |
| 01/28/2019 | SIMMONS HARRIS H | Director | Disposition | Common Units (Limited Partner Interests) | 6.1k | $0.00 | $0 | | 01/28/2019 |
| 01/28/2019 | FARRELL THOMAS F II | Chairman and CEO | Disposition | Common Units (Limited Partner Interests) | 10k | $0.00 | $0 | | 01/28/2019 |
| 01/28/2019 | FARRELL THOMAS F II | Chairman and CEO | Disposition | Common Units (Limited Partner Interests) | 59.9k | $0.00 | $0 | By Farrell Investments, LLC | 01/28/2019 |
| 01/28/2019 | Snow John W. | Director | Disposition | Common Units (Limited Partner Interests) | 77.8k | $0.00 | $0 | | 01/28/2019 |
| 01/28/2019 | WOLLARD DAVID A | Director | Disposition | Common Units (Limited Partner Interests) | 26.1k | $0.00 | $0 | | 01/28/2019 |
| 01/28/2019 | Cardiff Michele L | VP, Controller and CAO | Disposition | Common Units (Limited Partner Interests) | 500 | $0.00 | $0 | | 01/28/2019 |
| 01/28/2019 | Webb Mark O | SVP & Chief Innovation Officer | Disposition | Common Units (Limited Partner Interests) | 4k | $0.00 | $0 | | 01/28/2019 |
| 01/28/2019 | Stonepeak Commonwealth Holdings LLC | 10% Owner | Conversion | Common Units | 16.4M | $0.00 | $0 | | 01/28/2019 |
| 01/28/2019 | Stonepeak Commonwealth Holdings LLC | 10% Owner | Other (disposition) | Common Units | 16.4M | $0.00 | $0 | | 01/28/2019 |
| 01/28/2019 | Stonepeak Commonwealth Holdings LLC | 10% Owner | Conversion | Series A Convertible Preferred Units | 16.4M | $0.00 | $0 | | 01/28/2019 |
| 12/12/2018 | Chapman James R. | SVP, CFO & Treasurer | Sale | Common Units (Limited Partner Interests) | 16.8k | $19.22 | $322.9k | Jointly with spouse | 12/12/2018 |
| 12/12/2018 | Brown Carlos M | VP & General Counsel | Sale | Common Units (Limited Partner Interests) | 3.3k | $19.14 | $63.2k | Joint Tenancy | 12/12/2018 |
| 12/12/2018 | Leopold Diane | EVP,Pres&CEO GasInfrastructure | Sale | Common Units (Limited Partner Interests) | 2.5k | $19.19 | $48k | By Spouse | 12/12/2018 |
| 12/12/2018 | Leopold Diane | EVP,Pres&CEO GasInfrastructure | Sale | Common Units (Limited Partner Interests) | 2.5k | $19.22 | $48.1k | | 12/12/2018 |
| 06/27/2018 | DOMINION ENERGY, INC | 10% Owner | Other (acquisition) | Common Units (Limited Partner Interests) | 26.7M | $0.00 | $0 | See Footnote | 06/27/2018 |
| 02/15/2018 | NATIONAL GRID PLC | 10% Owner | Sale | Common Units | 6.8M | $25.26 | $171.3M | Through indirect subsidiaries Northeast Transmission Co., Inc. and National Grid IGTS Corp. | 02/15/2018 |
| 01/02/2018 | LUKE JOHN A JR | Director | Grant | Common Units (Limited Partner Interests) | 2.6k | $0.00 | $0 | | 01/02/2018 |
| 01/02/2018 | SIMMONS HARRIS H | Director | Grant | Common Units (Limited Partner Interests) | 2.6k | $0.00 | $0 | | 01/02/2018 |
| 01/02/2018 | Snow John W. | Director | Grant | Common Units (Limited Partner Interests) | 2.6k | $0.00 | $0 | | 01/02/2018 |
| 01/02/2018 | WOLLARD DAVID A | Director | Grant | Common Units (Limited Partner Interests) | 2.6k | $0.00 | $0 | | 01/02/2018 |
| 02/24/2017 | LUKE JOHN A JR | Director | Grant | Common Units (Limited Partner Interests) | 2.4k | $0.00 | $0 | | 02/24/2017 |
| 01/03/2017 | SIMMONS HARRIS H | Director | Grant | Common Units (Limited Partner Interests) | 2.7k | $0.00 | $0 | | 01/03/2017 |
| 01/03/2017 | RIGBY JOSEPH M | Director | Grant | Common Units (Limited Partner Interests) | 2.7k | $0.00 | $0 | | 01/03/2017 |
| 01/03/2017 | WOLLARD DAVID A | Director | Grant | Common Units (Limited Partner Interests) | 2.7k | $0.00 | $0 | | 01/03/2017 |
| 01/03/2017 | Snow John W. | Director | Grant | Common Units (Limited Partner Interests) | 2.7k | $0.00 | $0 | | 01/03/2017 |
| 10/24/2016 | SIMMONS HARRIS H | Director | Grant | Common Units (Limited Partner Interests) | 818 | $0.00 | $0 | | 10/24/2016 |
| 09/16/2016 | DOMINION ENERGY, INC | 10% Owner | Purchase | Common Units (Limited Partner Interests) | 28.4k | $24.90 | $706.5k | See Footnote | 09/15/2016 |
| 09/15/2016 | DOMINION ENERGY, INC | 10% Owner | Purchase | Common Units (Limited Partner Interests) | 28.4k | $25.17 | $714.1k | See Footnote | 09/15/2016 |
| 06/17/2016 | DOMINION ENERGY, INC | 10% Owner | Purchase | Common Units (Limited Partner Interests) | 21.6k | $27.05 | $583.7k | See Footnote | 06/17/2016 |
| 06/17/2016 | DOMINION ENERGY, INC | 10% Owner | Purchase | Common Units (Limited Partner Interests) | 15.8k | $26.17 | $413.6k | See Footnote | 06/17/2016 |
| 06/16/2016 | DOMINION ENERGY, INC | 10% Owner | Purchase | Common Units (Limited Partner Interests) | 37.4k | $27.03 | $1M | See Footnote | 06/15/2016 |
| 06/15/2016 | DOMINION ENERGY, INC | 10% Owner | Purchase | Common Units (Limited Partner Interests) | 37.4k | $27.00 | $1M | See Footnote | 06/15/2016 |
| 02/05/2016 | DOMINION ENERGY, INC | 10% Owner | Purchase | Common Units (Limited Partner Interests) | 100 | $27.99 | $2.8k | See Footnote | 02/04/2016 |
| 02/04/2016 | DOMINION ENERGY, INC | 10% Owner | Purchase | Common Units (Limited Partner Interests) | 5.8k | $27.43 | $159k | See Footnote | 02/04/2016 |
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