| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 144 | Open Document | Open Filing | 14 Dec 2023 | |||
| 4 | Open Document | Open Filing | 03 Jan 2023 | 30 Dec 2022 | 000-16469 | |
| 4 | Open Document | Open Filing | 08 Dec 2022 | 06 Dec 2022 | 000-16469 | |
| 4 | Open Document | Open Filing | 30 Nov 2021 | 26 Nov 2021 | 000-16469 | |
| 4 | Open Document | Open Filing | 19 Nov 2021 | 18 Nov 2021 | 000-16469 | |
| 4 | Open Document | Open Filing | 11 Feb 2021 | 09 Feb 2021 | 000-16469 | |
| 4 | Open Document | Open Filing | 03 Feb 2021 | 01 Feb 2021 | 000-16469 | |
| 4 | Open Document | Open Filing | 09 Oct 2020 | 09 Oct 2020 | 000-16469 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 04 Feb 2020 | 01 Feb 2020 | 000-16469 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 27 Nov 2019 | 01 Feb 2019 | 000-16469 |
| 4 | Open Document | Open Filing | FORM 4 | 04 Feb 2019 | 01 Feb 2019 | 000-16469 |
| 4 | Open Document | Open Filing | 12 Dec 2018 | 10 Dec 2018 | 000-16469 | |
| 4 | Open Document | Open Filing | 4 | 06 Feb 2018 | 05 Feb 2018 | 000-16469 |
| 4 | Open Document | Open Filing | 4 | 02 Feb 2018 | 01 Feb 2018 | 000-16469 |
| 4 | Open Document | Open Filing | 4 | 03 Oct 2017 | 02 Oct 2017 | 000-16469 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Feb 2017 | 01 Feb 2017 | 000-16469 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Jan 2017 | 03 Jan 2017 | 000-16469 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Feb 2016 | 01 Feb 2016 | 000-16469 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 Nov 2015 | 19 Nov 2015 | 000-16469 |
| 4 | Open Document | Open Filing | 26 Mar 2015 | 24 Mar 2015 | 000-16469 | |
| 4 | Open Document | Open Filing | 04 Feb 2015 | 02 Feb 2015 | 000-16469 | |
| 4 | Open Document | Open Filing | 05 Sep 2014 | 03 Sep 2014 | 000-16469 | |
| 4 | Open Document | Open Filing | 12 Feb 2014 | 10 Feb 2014 | 000-16469 | |
| 4 | Open Document | Open Filing | 04 Feb 2014 | 01 Feb 2014 | 000-16469 |