SEC EDGAR filings, ownership reports, and insider transactions for David Hsu.
| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 21 Jun 2024 | 15 Jun 2022 | 001-39933 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 20 Sep 2022 | 19 Apr 2022 | 000-56199 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 13 Dec 2021 | 09 Dec 2021 | 000-56199 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 22 Nov 2021 | 05 Nov 2021 | 000-56199 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Jul 2021 | 09 Jun 2021 | 001-39933 |