| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 23 Apr 2025 | 21 Apr 2025 | 001-16497 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 03 Apr 2024 | 01 Apr 2024 | 001-16497 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 03 Nov 2023 | 03 Nov 2023 | 001-16497 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 20 Sep 2023 | 19 Sep 2023 | 001-16497 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 29 Mar 2023 | 27 Mar 2023 | 001-16497 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 14 Apr 2022 | 12 Apr 2022 | 001-16497 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 04 Apr 2022 | 28 Mar 2022 | 001-16497 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 04 Jan 2022 | 03 Jan 2022 | 001-16497 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 16 Apr 2021 | 14 Apr 2021 | 001-16497 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 05 Apr 2021 | 01 Apr 2021 | 001-16497 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 31 Mar 2021 | 29 Mar 2021 | 001-16497 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 20 Apr 2020 | 16 Apr 2020 | 001-16497 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 17 Dec 2019 | 16 Dec 2019 | 001-16497 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 19 Apr 2019 | 17 Apr 2019 | 001-16497 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 24 Sep 2018 | 20 Sep 2018 | 001-16497 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 18 Apr 2018 | 16 Apr 2018 | 001-16497 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 26 Dec 2017 | 22 Dec 2017 | 001-16497 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 19 Apr 2017 | 17 Apr 2017 | 001-16497 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 15 Dec 2016 | 13 Dec 2016 | 001-16497 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 19 Apr 2016 | 15 Apr 2016 | 001-16497 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 05 Jun 2015 | 04 Jun 2015 | 001-16497 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 20 Apr 2015 | 15 Apr 2015 | 001-16497 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 06 Jun 2014 | 04 Jun 2014 | 001-16497 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 17 Apr 2014 | 15 Apr 2014 | 001-16497 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 24 Apr 2013 | 19 Apr 2013 | 001-16497 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 24 Apr 2012 | 20 Apr 2012 | 001-16497 |