| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 23 May 2022 | 22 May 2022 | 000-26481 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 18 Mar 2022 | 16 Mar 2022 | 000-26481 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 22 Mar 2021 | 19 Mar 2021 | 000-26481 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 02 Mar 2021 | 27 Feb 2021 | 000-26481 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 18 Feb 2021 | 08 Feb 2021 | 000-26481 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 23 May 2019 | 22 May 2019 | 000-26481 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 05 Mar 2019 | 19 Dec 2018 | 000-26481 |