Ownership History
| MATHESON TRI-GAS, INC. | $1,378,800 | | 41059/187 | QCU | 10/16/2024 |
| PWS HOLDINGS-SOUTH PORTLAND LLC | $0 | | 25722/0265 | IN | 12/21/2007 |
| PWS HOLDINGS-SOUTH PORTLAND LLC | $0 | | 25722/0262 | IN | 12/21/2007 |
| PWS HOLDINGS-SOUTH PORTLAND LLC | $0 | | 25722/0259 | IN | 12/21/2007 |
| MACDONALD, CLARENCE R. | $0 | | 12067/0007 | PB | 08/21/1995 |