Ownership History
| COVBOLT LLC & DEVIRGILIO JOSEPH J & | $1 | 171/1131 | 29 | 08/23/2016 |
| COVBOLT LLC & DEVIRGILIO JOSEPH J & | $0 | 171/340 | 10 | 06/14/2016 |
| TOEPKE HENRY T & DEVIRGILIO JOSEPH J | $0 | 143/502 | | 05/08/2009 |
| 89 WRS LIMITED PARTNERSHIP TRUST | $0 | 0101/0599 | | 11/16/2000 |