| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 14 Feb 2024 | ||
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 15 Feb 2022 | ||
| 4 | Open Document | Open Filing | FORM 4 - | 15 Feb 2022 | 11 Feb 2022 | 000-24649 |
| 4 | Open Document | Open Filing | FORM 4 - | 26 Jul 2021 | 23 Jul 2021 | 000-24649 |
| 4/A | Open Document | Open Filing | FORM 4/A - | 12 Mar 2021 | 15 Aug 2020 | 000-24649 |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 17 Aug 2020 | ||
| 4 | Open Document | Open Filing | FORM 4 - | 17 Aug 2020 | 13 Aug 2020 | 000-24649 |
| 5/A | Open Document | Open Filing | FORM 5/A - | 12 Apr 2019 | 31 Dec 2018 | 000-24649 |
| 4/A | Open Document | Open Filing | FORM 4/A - | 12 Apr 2019 | 02 Nov 2018 | 000-24649 |
| 5 | Open Document | Open Filing | FORM 5 - | 14 Feb 2019 | 31 Dec 2018 | 000-24649 |
| 4 | Open Document | Open Filing | FORM 4 - | 06 Nov 2018 | 02 Nov 2018 | 000-24649 |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 14 Feb 2017 | ||
| SC 13D | Open Document | Open Filing | SC 13D | 11 Jan 2016 | ||
| 4 | Open Document | Open Filing | FORM 4 - | 11 Jan 2016 | 31 Dec 2015 | 000-24649 |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | 17 Feb 2015 | ||
| 4/A | Open Document | Open Filing | 4/A | 28 Feb 2014 | 30 Jun 2013 | 000-24649 |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | 13 Feb 2014 |