| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 19 May 2022 | 17 May 2022 | 001-16501 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 04 Apr 2022 | 31 Mar 2022 | 001-16501 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 23 Mar 2022 | 21 Mar 2022 | 001-16501 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 03 Dec 2021 | 01 Dec 2021 | 001-16501 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 22 Nov 2021 | 14 Nov 2021 | 001-16501 |