| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 21 Dec 2023 | ||
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 20 Dec 2023 | 20 Dec 2023 | 001-05332 |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 13 Oct 2023 | ||
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 22 Mar 2023 | 21 Mar 2023 | 001-05332 |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 22 Mar 2023 | ||
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 20 Feb 2019 | ||
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 25 Jun 2018 | 22 Jun 2018 | 001-05332 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 07 Sep 2017 | 05 Sep 2017 | 001-05332 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 22 Feb 2016 | 22 Feb 2016 | 001-05332 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 04 Nov 2015 | 03 Nov 2015 | 001-05332 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 22 Oct 2015 | 22 Oct 2015 | 001-05332 |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 22 Oct 2014 | ||
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 30 Sep 2014 | 29 Sep 2014 | 001-05332 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 09 Jun 2014 | 05 Jun 2014 | 001-05332 |