| Filed | Form | Description | |
|---|---|---|---|
| 11/12/24 | SC 13G | SC 13G | → |
| 2/14/23 | SC 13G/A | SC 13G/A | → |
| 2/14/22 | SC 13G/A | SC 13G/A | → |
| 2/17/21 | SC 13G/A | 01269-0001 | → |
| 2/11/21 | SC 13G/A | SEC SCHEDULE 13G | → |
| 1/8/21 | SC 13G/A | YIHENG13GA1SIMO | → |
| ↓ | |||
Silicon is a chemical element; it has symbol Si and atomic number 14. It is a hard, brittle crystalline solid with a blue-grey metallic lustre, and is a tetravalent non-metal and semiconductor.