Ownership History
| VERSUM MATERIALS US LLC | $1 | | 2569-1480 | 08/01/2016 |
| AIR PRODUCTS & CHEMICALS INC | $405,500 | | 2144-0856 | 04/07/2005 |
| BLACKWELL, BETTY C; BLACKWELL, DONALD C | $30,000 | | 1459-0150 | 09/05/2001 |
| BLACKWELL BETTY C & DONALD C | $0 | | 1206-0788 | 05/09/1975 |
| NEYER E ETAL | $0 | | 1132-0810 | 12/31/1970 |
| SHAFER, C H & W | $0 | | 0887-0229 | 01/02/1954 |