Ownership History
| RICE, ROBERT A | $0 | | 1N | 03/26/2015 | 16996 | 0256 |
| MCMAQ, A LIMITED LIABILITY COMPANY | $460,000 | | 00 | 01/11/2008 | 15334 | 0348 |
| PRE LLC | $383,000 | | 00 | 03/20/2003 | 12636 | 0146 |
| FLOTATION TECHNOLOGIES INC | $175,000 | | 00 | 08/19/1992 | 06214 | 0301 |
| SIGNAL CAPITAL CORPORATION | $10 | | 1I | 07/02/1992 | 06151 | 0332 |