| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | Jul 19, 2022 | Jul 6, 2022 | 001-13948 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | Feb 18, 2022 | Feb 16, 2022 | 001-13948 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 13, 2021 | May 12, 2021 | 001-13948 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 12, 2021 | May 12, 2021 | 001-13948 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 21, 2021 | Apr 12, 2021 | 001-13948 |