| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 20 Jan 2023 | 18 Jan 2023 | 000-21180 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 24 Jan 2022 | 20 Jan 2022 | 000-21180 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Jun 2021 | 27 May 2021 | 000-21180 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 Jan 2021 | 22 Jan 2021 | 000-21180 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Jan 2020 | 23 Jan 2020 | 000-21180 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Jan 2020 | 31 Dec 2019 | 000-06920 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Sep 2019 | 05 Sep 2019 | 000-06920 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Mar 2019 | 07 Mar 2019 | 000-06920 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Feb 2019 | 27 Feb 2019 | 000-21180 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 Jan 2019 | 24 Jan 2019 | 000-21180 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Jan 2019 | 18 Jan 2019 | 000-21180 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Jan 2019 | 31 Dec 2018 | 000-06920 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Aug 2018 | 28 Aug 2018 | 000-21180 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Mar 2018 | 08 Mar 2018 | 000-06920 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Jan 2018 | 18 Jan 2018 | 000-21180 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Jan 2018 | 29 Dec 2017 | 000-06920 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 May 2017 | 25 May 2017 | 000-21180 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Mar 2017 | 09 Mar 2017 | 000-06920 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Jan 2017 | 20 Jan 2017 | 000-21180 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Jan 2017 | 30 Dec 2016 | 000-06920 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Mar 2016 | 10 Mar 2016 | 000-06920 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Jan 2016 | 22 Jan 2016 | 000-21180 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 Nov 2015 | 23 Nov 2015 | 000-21180 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 28 May 2015 | 27 May 2015 | 001-33622 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Apr 2015 | 02 Apr 2015 | 000-06920 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Jan 2015 | 23 Jan 2015 | 000-21180 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Dec 2014 | 26 Nov 2014 | 000-21180 |
| 4 | Open Document | Open Filing | FORM 4 | 29 May 2014 | 28 May 2014 | 001-33622 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Mar 2014 | 04 Mar 2014 | 000-06920 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Feb 2014 | 24 Feb 2014 | 000-06920 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Jan 2014 | 24 Jan 2014 | 000-21180 |