| Filed | Form | Description | |
|---|---|---|---|
| 4/8/25 | DEF 14A | DEF 14A | → |
| 5/15/24 | DEFA14A | DEFA14A | → |
| 4/10/24 | DEF 14A | DEF 14A | → |
| 4/10/23 | DEFA14A | DEFA14A | → |
| 4/7/23 | DEF 14A | DEF 14A | → |
| 3/25/22 | DEFA14A | DEFINITIVE ADDITIONAL MATERIALS | → |
| ↓ | |||
| Filed | Form | Description | |
|---|---|---|---|
| 3/4/26 | 4 | 4 | → |
| 3/4/26 | 4 | 4 | → |
| 3/4/26 | 4 | 4 | → |
| 3/4/26 | 4 | 4 | → |
| 3/4/26 | 4 | 4 | → |
| 3/4/26 | 4 | 4 | → |
| ↓ | |||
Hyliion Holdings Corp. is an American company specializing in the development of the modular powerplant.