| Filed | Form | Description | |
|---|---|---|---|
| 6/9/20 | 3 | FORM 3 | → |
| 2/14/14 | SC 13G | SCHEDULE 13G | → |
| 2/19/13 | SC 13G | SCHEDULE 13G | → |
| 11/27/12 | 4 | PRIMARY DOCUMENT | → |
| 11/27/12 | SC 13D | SCHEDULE 13-D WILBER | → |
Graphene is a variety of the element carbon which occurs naturally in small amounts. In graphene, the carbon forms a sheet of interlocked atoms as hexagons one carbon atom thick.