| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Dec 2025 | 10 Dec 2025 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Apr 2025 | 01 Apr 2025 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 Mar 2025 | 19 Mar 2025 | 000-18183 |
| SCHEDULE 13G/A | Open Document | Open Filing | 14 Feb 2025 | |||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Sep 2024 | 24 Sep 2024 | 000-18183 |
| 144 | Open Document | Open Filing | 26 Sep 2024 | |||
| 144 | Open Document | Open Filing | 24 Sep 2024 | |||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Apr 2024 | 01 Apr 2024 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Mar 2024 | 27 Mar 2024 | 000-18183 |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | 14 Feb 2024 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Dec 2023 | 12 Dec 2023 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 Jun 2023 | 15 Jun 2023 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 May 2023 | 27 Apr 2023 | 000-18183 |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | 14 Feb 2023 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Dec 2022 | 05 Dec 2022 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Jun 2022 | 15 Jun 2022 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 31 Mar 2022 | 29 Mar 2022 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Mar 2022 | 30 Nov 2021 | 000-18183 |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | 14 Feb 2022 | ||
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Jun 2021 | 16 Mar 2021 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Jun 2021 | 15 Jun 2021 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Mar 2021 | 16 Mar 2021 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Apr 2020 | 27 Apr 2020 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Apr 2020 | 02 Apr 2020 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 31 Mar 2020 | 28 Mar 2020 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Mar 2020 | 24 Mar 2020 | 000-18183 |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | 14 Feb 2020 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Jan 2020 | 27 Jan 2020 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Jul 2019 | 11 Jul 2019 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 Jun 2019 | 13 Jun 2019 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Mar 2019 | 28 Mar 2019 | 000-18183 |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | 14 Feb 2019 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Jun 2018 | 15 Jun 2018 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Apr 2018 | 26 Apr 2018 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Mar 2018 | 28 Mar 2018 | 000-18183 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Feb 2018 | 07 Dec 2017 | 000-18183 |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | 13 Feb 2018 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Dec 2017 | 07 Dec 2017 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Oct 2017 | 05 Oct 2017 | 000-18183 |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | 04 Oct 2017 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Jun 2017 | 09 Jun 2017 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Apr 2017 | 04 Apr 2017 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Apr 2017 | 03 Apr 2017 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Mar 2017 | 28 Mar 2017 | 000-18183 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Feb 2017 | 31 Jan 2017 | 000-18183 |
| SC 13G/A | Open Document | Open Filing | AMENDMENT NO. 19 TO SCHEDULE 13G | 13 Feb 2017 | ||
| SC 13G/A | Open Document | Open Filing | SC 13G/A | 10 Feb 2017 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Oct 2016 | 05 Oct 2016 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Jun 2016 | 08 Jun 2016 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 May 2016 | 11 May 2016 | 000-18183 |
| SC 13G | Open Document | Open Filing | SC 13G | 12 Feb 2016 | ||
| SC 13G/A | Open Document | Open Filing | AMENDMENT NO. 18 TO SCHEDULE 13G | 11 Feb 2016 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Dec 2015 | 10 Dec 2015 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Oct 2015 | 06 Oct 2015 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Sep 2015 | 08 Sep 2015 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Jul 2015 | 30 Jun 2015 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Jun 2015 | 11 May 2015 | 001-12043 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Jun 2015 | 15 Jun 2015 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Jun 2015 | 10 Jun 2015 | 000-18183 |
| 4 | Open Document | Open Filing | FORM 4 | 22 May 2015 | 20 May 2015 | 001-35675 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Apr 2015 | 07 Apr 2015 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Apr 2015 | 02 Apr 2015 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Apr 2015 | 30 Mar 2015 | 000-18183 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Feb 2015 | 23 Oct 2014 | 000-18183 |
| SC 13G/A | Open Document | Open Filing | AMENDMENT NO. 17 TO SCHEDULE 13G | 12 Feb 2015 | ||
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Jan 2015 | 28 Jan 2015 | 001-12043 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Jan 2015 | 28 Jan 2015 | 001-12043 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Jan 2015 | 16 Jan 2015 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Jan 2015 | 13 Jan 2015 | 000-18183 |
| 4 | Open Document | Open Filing | FORM 4 | 06 Nov 2014 | 04 Nov 2014 | 001-35675 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Oct 2014 | 23 Oct 2014 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Oct 2014 | 07 Oct 2014 | 000-18183 |
| 4 | Open Document | Open Filing | FORM 4 | 15 Aug 2014 | 14 Aug 2014 | 001-35675 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Jul 2014 | 01 Jul 2014 | 000-18183 |
| 4 | Open Document | Open Filing | FORM 4 | 09 May 2014 | 07 May 2014 | 001-35675 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Apr 2014 | 15 Apr 2014 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Apr 2014 | 10 Apr 2014 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Mar 2014 | 17 Mar 2014 | 000-18183 |
| SC 13G/A | Open Document | Open Filing | AMENDMENT NO. 16 TO SCHEDULE 13G | 14 Feb 2014 | ||
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Feb 2014 | 31 Jan 2014 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Jan 2014 | 14 Jan 2014 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Jan 2014 | 02 Jan 2014 | 001-12043 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Jan 2014 | 13 May 2013 | 001-12043 |