| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| SCHEDULE 13D/A | Open Document | Open Filing | 15 Sep 2025 | |||
| 4 | Open Document | Open Filing | 15 Sep 2025 | 11 Sep 2025 | 000-15057 | |
| 4 | Open Document | Open Filing | 15 May 2025 | 12 May 2025 | 000-15057 | |
| SCHEDULE 13D/A | Open Document | Open Filing | 09 May 2025 | |||
| 4 | Open Document | Open Filing | 4 | 07 May 2025 | 05 May 2025 | 000-51142 |
| 4 | Open Document | Open Filing | 31 Jul 2024 | 09 May 2024 | 000-15057 | |
| SC 13D/A | Open Document | Open Filing | AMENDMENT 14 TO FORM SC 13D | 31 Jul 2024 | ||
| 4 | Open Document | Open Filing | 4 | 08 May 2024 | 06 May 2024 | 000-51142 |
| 4/A | Open Document | Open Filing | 25 Sep 2023 | 01 Aug 2023 | 000-15057 | |
| 4/A | Open Document | Open Filing | 4/A | 25 Sep 2023 | 01 Aug 2023 | 000-51142 |
| 4 | Open Document | Open Filing | 4 | 03 Aug 2023 | 01 Aug 2023 | 000-51142 |
| 4 | Open Document | Open Filing | 03 Aug 2023 | 01 Aug 2023 | 000-15057 | |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 03 Aug 2023 | ||
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 03 Aug 2023 | ||
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 16 May 2023 | ||
| SC 13D/A | Open Document | Open Filing | AMENDMENT NO. 12 | 12 May 2023 | ||
| 4 | Open Document | Open Filing | 10 May 2023 | 08 May 2023 | 000-15057 | |
| 4 | Open Document | Open Filing | 4 | 10 May 2023 | 08 May 2023 | 000-51142 |
| 4 | Open Document | Open Filing | 11 May 2022 | 09 May 2022 | 000-15057 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 10 May 2022 | 09 May 2022 | 000-51142 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 18 Jan 2022 | 20 Dec 2021 | 000-51142 |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 18 Jan 2022 | ||
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 24 Jun 2021 | ||
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 22 Jun 2021 | 15 Dec 2020 | 000-51142 |
| 4 | Open Document | Open Filing | 02 Apr 2021 | 31 Mar 2021 | 000-15057 | |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 29 Dec 2020 | ||
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 15 Dec 2020 | ||
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 14 Dec 2020 | 10 Dec 2020 | 000-51142 |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 30 Nov 2020 | ||
| 4 | Open Document | Open Filing | 01 May 2020 | 29 Apr 2020 | 000-15057 | |
| 4 | Open Document | Open Filing | 02 Apr 2020 | 31 Mar 2020 | 000-15057 | |
| 5 | Open Document | Open Filing | FORM 5 SUBMISSION | 14 Feb 2020 | 31 Dec 2019 | 000-51142 |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 14 Feb 2020 | ||
| SC 13D/A | Open Document | Open Filing | SCHEDULE 13D AMENDEMENT NO. 11 | 26 Jul 2019 | ||
| 4 | Open Document | Open Filing | 08 Apr 2019 | 31 Mar 2019 | 000-15057 | |
| SC 13D/A | Open Document | Open Filing | 05 Jul 2018 | |||
| 4 | Open Document | Open Filing | FORM 4 | 03 Apr 2018 | 31 Mar 2018 | 000-15057 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 26 Feb 2018 | 23 Feb 2018 | 000-15057 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 06 Dec 2017 | 12 May 2017 | 000-15057 |
| SC 13D/A | Open Document | Open Filing | AMENDMENT NO. 9 | 06 Dec 2017 | ||
| SC 13D/A | Open Document | Open Filing | AMENDMENT NO. 8 | 07 Apr 2017 | ||
| 4 | Open Document | Open Filing | FORM 4 | 04 Apr 2017 | 31 Mar 2017 | 000-15057 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 14 Feb 2017 | 10 Feb 2017 | 000-15057 |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 02 May 2016 | ||
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | 12 Apr 2016 | 06 Apr 2016 | 000-15057 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 07 Apr 2016 | 06 Apr 2016 | 000-15057 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 04 Apr 2016 | 31 Mar 2016 | 000-15057 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 12 Feb 2016 | 12 Feb 2016 | 000-15057 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 14 Jul 2015 | 10 Jul 2015 | 000-15057 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 01 Apr 2015 | 31 Mar 2015 | 000-15057 |
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | 24 Feb 2015 | 27 Feb 2014 | 000-15057 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 24 Feb 2015 | 20 Feb 2015 | 000-15057 |
| SC 13D/A | Open Document | Open Filing | SCHEDULE 13-D (AMENDMENT NO. 6) | 29 Jan 2015 | ||
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 05 Jan 2015 | 31 Dec 2014 | 000-15057 |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 21 May 2014 | ||
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 21 May 2014 | 20 May 2014 | 000-51142 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 02 Apr 2014 | 31 Mar 2014 | 000-15057 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 03 Mar 2014 | 27 Feb 2014 | 000-15057 |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 29 Jan 2014 |