| Filed | Form | Description | |
|---|---|---|---|
| 5/8/18 | DEF 14A | DEF 14A | → |
| 4/27/18 | PRE 14A | PRE 14A | → |
| Filed | Form | Description | |
|---|---|---|---|
| 3/27/23 | 4 | 4 | → |
| 11/4/20 | 5 | 5 | → |
| 11/4/20 | SC 13D | SCHEDULE 13D | → |
| 8/20/20 | 5 | 5 | → |
| 8/20/20 | 3 | 3 | → |
| 4/17/17 | SC 13G | SC 13G | → |
| ↓ | |||
Cavitation in fluid mechanics and engineering normally is the phenomenon in which the static pressure of a liquid reduces to below the liquid's vapor pressure, leading to the formation of small vapor-filled cavities in the liquid. When subjected to higher pressure, these cavities, called "bubbles" or "voids", collapse and can generate shock waves that may damage machinery.