| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 02 Nov 2021 | 29 Oct 2021 | 000-55008 | |
| SC 13D/A | Open Document | Open Filing | AMENDMENT NO. 1 | 20 Aug 2021 | ||
| 4 | Open Document | Open Filing | 21 Jun 2021 | 17 Jun 2021 | 000-55008 | |
| 4 | Open Document | Open Filing | 16 Jun 2021 | 14 Jun 2021 | 000-55008 | |
| 4 | Open Document | Open Filing | 11 Jun 2021 | 09 Jun 2021 | 000-55008 | |
| 4 | Open Document | Open Filing | 08 Jun 2021 | 04 Jun 2021 | 000-55008 | |
| 4 | Open Document | Open Filing | 03 Jun 2021 | 01 Jun 2021 | 000-55008 | |
| 4 | Open Document | Open Filing | 28 May 2021 | 26 May 2021 | 000-55008 | |
| 4 | Open Document | Open Filing | 25 May 2021 | 21 May 2021 | 000-55008 | |
| 4 | Open Document | Open Filing | 20 May 2021 | 13 May 2021 | 000-55008 | |
| 4 | Open Document | Open Filing | 17 May 2021 | 13 May 2021 | 000-55008 | |
| 4 | Open Document | Open Filing | 12 May 2021 | 10 May 2021 | 000-55008 | |
| 4 | Open Document | Open Filing | 07 May 2021 | 05 May 2021 | 000-55008 | |
| 4 | Open Document | Open Filing | 05 May 2021 | 04 May 2021 | 000-55008 | |
| 4 | Open Document | Open Filing | 30 Apr 2021 | 30 Apr 2021 | 000-55008 | |
| 4 | Open Document | Open Filing | 14 Apr 2021 | 06 Apr 2021 | 000-55008 | |
| 4 | Open Document | Open Filing | 22 Feb 2021 | 27 Jan 2021 | 000-55008 | |
| 4 | Open Document | Open Filing | 30 Dec 2020 | 21 Dec 2020 | 000-55008 | |
| 4 | Open Document | Open Filing | 09 Dec 2020 | 25 Aug 2020 | 000-55008 | |
| 4 | Open Document | Open Filing | 30 Sep 2020 | 23 Sep 2020 | 000-55008 | |
| 4 | Open Document | Open Filing | 18 Sep 2020 | 27 Aug 2020 | 000-55008 | |
| 4 | Open Document | Open Filing | 06 Aug 2020 | 01 May 2020 | 000-55008 | |
| SC 13D | Open Document | Open Filing | SCHEDULE 13D | 16 Aug 2018 | ||
| 4 | Open Document | Open Filing | 08 Aug 2018 | 23 Apr 2018 | 000-55008 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Mar 2017 | 08 Mar 2017 | 000-55008 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Nov 2016 | 04 Nov 2016 | 000-55008 |