| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 15 Mar 2022 | 15 Mar 2022 | 001-40364 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 15 Mar 2021 | 12 Mar 2021 | 000-24575 |
| 4 | Open Document | Open Filing | 4 | 19 Nov 2019 | 15 Nov 2019 | 000-24575 |
| 3 | Open Document | Open Filing | 3 | 05 Aug 2019 | 26 Jul 2019 | 000-24575 |