| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 17 Aug 2021 | 13 Aug 2021 | 000-51813 |
| 4 | Open Document | Open Filing | FORM 4 | 04 Aug 2021 | 01 Aug 2021 | 000-51813 |
| 4 | Open Document | Open Filing | FORM 4 | 10 Jun 2021 | 08 Jun 2021 | 000-51813 |
| 4 | Open Document | Open Filing | FORM 4 | 13 May 2021 | 11 May 2021 | 000-51813 |
| 4 | Open Document | Open Filing | FORM 4 | 11 May 2021 | 07 May 2021 | 000-51813 |
| 4 | Open Document | Open Filing | FORM 4 | 12 Feb 2021 | 12 Feb 2021 | 000-51813 |
| 4 | Open Document | Open Filing | FORM 4 | 11 Feb 2021 | 10 Feb 2021 | 000-51813 |
| 4 | Open Document | Open Filing | FORM 4 | 09 Feb 2021 | 08 Feb 2021 | 000-51813 |
| 4 | Open Document | Open Filing | FORM 4 | 29 Jan 2021 | 28 Jan 2021 | 000-51813 |
| 4 | Open Document | Open Filing | FORM 4 | 20 Jan 2021 | 18 Jan 2021 | 000-51813 |
| 4 | Open Document | Open Filing | FORM 4 | 05 Jan 2021 | 01 Jan 2021 | 000-51813 |
| 4 | Open Document | Open Filing | FORM 4 | 03 Dec 2020 | 01 Dec 2020 | 000-51813 |
| 4 | Open Document | Open Filing | FORM 4 | 04 Aug 2020 | 03 Aug 2020 | 000-51813 |
| 4 | Open Document | Open Filing | FORM 4 | 06 Jan 2020 | 02 Jan 2020 | 000-51813 |
| 4 | Open Document | Open Filing | FORM 4 | 05 Dec 2019 | 03 Dec 2019 | 000-51813 |
| 4 | Open Document | Open Filing | FORM 4 | 01 Aug 2019 | 01 Aug 2019 | 000-51813 |
| 3 | Open Document | Open Filing | FORM 3 | 03 May 2019 | 23 Apr 2019 | 000-51813 |