| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 12 Dec 2025 | 11 Dec 2025 | 001-14778 | |
| 4 | Open Document | Open Filing | 03 Oct 2025 | 02 Oct 2025 | 001-14778 | |
| 4 | Open Document | Open Filing | 13 Dec 2024 | 12 Dec 2024 | 001-14778 | |
| 4 | Open Document | Open Filing | 08 Dec 2023 | 08 Dec 2023 | 001-14778 | |
| 4 | Open Document | Open Filing | 09 Dec 2022 | 08 Dec 2022 | 001-14778 | |
| 4 | Open Document | Open Filing | 18 May 2022 | 18 May 2022 | 001-14778 | |
| 4 | Open Document | Open Filing | 21 Jan 2022 | 21 Jan 2022 | 001-14778 | |
| 4 | Open Document | Open Filing | 04 Jan 2022 | 03 Jan 2022 | 001-14778 | |
| 4 | Open Document | Open Filing | 20 Dec 2021 | 17 Dec 2021 | 001-14778 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 14 Dec 2021 | 14 Dec 2021 | 001-14778 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 10 Dec 2021 | 09 Dec 2021 | 001-14778 |
| 4 | Open Document | Open Filing | 04 Jan 2021 | 04 Jan 2021 | 001-14778 | |
| 4 | Open Document | Open Filing | 11 Dec 2020 | 10 Dec 2020 | 001-14778 | |
| 4 | Open Document | Open Filing | 02 Jan 2020 | 02 Jan 2020 | 001-14778 | |
| 4 | Open Document | Open Filing | 13 Dec 2019 | 12 Dec 2019 | 001-14778 | |
| 4 | Open Document | Open Filing | 19 Nov 2019 | 19 Nov 2019 | 001-14778 | |
| 4 | Open Document | Open Filing | 22 Apr 2019 | 22 Apr 2019 | 001-14778 | |
| 4 | Open Document | Open Filing | 04 Jan 2019 | 02 Jan 2019 | 001-14778 | |
| 4 | Open Document | Open Filing | 14 Dec 2018 | 13 Dec 2018 | 001-14778 | |
| 4 | Open Document | Open Filing | 18 Oct 2018 | 18 Oct 2018 | 001-14778 | |
| 4 | Open Document | Open Filing | 22 Aug 2018 | 22 Aug 2018 | 001-14778 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 11 Dec 2017 | 07 Dec 2017 | 001-14778 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 04 Apr 2017 | 31 Mar 2017 | 001-14778 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 20 Dec 2016 | 16 Dec 2016 | 001-14778 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 04 Jan 2016 | 31 Dec 2015 | 000-16929 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 23 Dec 2015 | 22 Dec 2015 | 000-16929 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 01 Jul 2015 | 01 Jul 2015 | 000-16929 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 24 Dec 2014 | 22 Dec 2014 | 000-16929 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 08 Dec 2014 | 04 Dec 2014 | 000-16929 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 14 May 2014 | 13 May 2014 | 000-16929 |