| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 21 Jun 2023 | 13 Jun 2023 | 000-54717 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 21 Jun 2023 | 09 Jun 2023 | 000-54717 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 21 Jun 2022 | 31 Mar 2022 | 000-54717 |
| 4 | Open Document | Open Filing | FORM 4 | 13 Dec 2021 | 15 Jul 2021 | 000-54717 |
| 4 | Open Document | Open Filing | FORM 4 | 13 Dec 2021 | 29 Mar 2021 | 000-54717 |
| 4 | Open Document | Open Filing | FORM 4 | 13 Dec 2021 | 26 Mar 2021 | 000-54717 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 27 Nov 2019 | 25 Nov 2019 | 000-54717 |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 28 Oct 2019 | ||
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 03 Oct 2019 | 30 Sep 2019 | 000-54717 |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 28 Aug 2019 | ||
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 28 Aug 2019 | 26 Aug 2019 | 000-54717 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 30 Jul 2019 | 26 Jul 2019 | 000-54717 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 04 Jun 2019 | 31 May 2019 | 000-54717 |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 16 May 2019 | ||
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 05 Apr 2019 | 28 Mar 2019 | 000-54717 |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 09 Aug 2018 | ||
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 26 Jul 2018 | 24 Jul 2018 | 000-54717 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 28 Jun 2018 | 13 Jun 2018 | 000-54717 |
| SC 13D/A | Open Document | Open Filing | AMENDMENT NO. 1 | 28 Jun 2018 | ||
| SC 13D | Open Document | Open Filing | SC 13D | 08 May 2018 | ||
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 03 Apr 2018 | 31 Mar 2018 | 000-54717 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 11 Sep 2017 | 01 Sep 2017 | 000-54717 |