| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4/A | Open Document | Open Filing | FORM 4/A | 27 Jan 2023 | 20 Jan 2023 | 000-20214 |
| 4 | Open Document | Open Filing | FORM 4 | 24 Jan 2023 | 20 Jan 2023 | 000-20214 |
| 4 | Open Document | Open Filing | FORM 4 | 15 Jul 2022 | 14 Jul 2022 | 000-20214 |
| 4 | Open Document | Open Filing | FORM 4 | 06 Jul 2022 | 01 Jul 2022 | 000-20214 |
| 4 | Open Document | Open Filing | FORM 4 | 02 Mar 2022 | 28 Feb 2022 | 000-20214 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 22 Jun 2021 | 17 Jun 2021 | 000-20214 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP | 02 Mar 2021 | 01 Mar 2021 | 000-20214 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP | 11 Feb 2021 | 02 Nov 2020 | 000-20214 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Jul 2020 | 14 Jul 2020 | 000-20214 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Mar 2020 | 29 Feb 2020 | 000-20214 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Jul 2019 | 25 Jul 2019 | 000-20214 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Jun 2019 | 29 May 2019 | 000-20214 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Mar 2018 | 16 Mar 2018 | 001-07562 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Mar 2018 | 13 Mar 2018 | 001-07562 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Mar 2018 | 05 Mar 2018 | 001-07562 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Feb 2018 | 01 Feb 2018 | 001-07562 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Dec 2017 | 29 Nov 2017 | 001-07562 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Nov 2017 | 01 Nov 2017 | 001-07562 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Oct 2017 | 02 Oct 2017 | 001-07562 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Sep 2017 | 01 Sep 2017 | 001-07562 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Aug 2017 | 01 Aug 2017 | 001-07562 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Jul 2017 | 03 Jul 2017 | 001-07562 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Jun 2017 | 01 Jun 2017 | 001-07562 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 May 2017 | 16 May 2017 | 001-07562 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Mar 2017 | 16 Mar 2017 | 001-07562 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Mar 2017 | 13 Mar 2017 | 001-07562 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Feb 2017 | 01 Feb 2017 | 001-07562 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Nov 2016 | 21 Nov 2016 | 001-07562 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 Mar 2016 | 18 Mar 2016 | 001-07562 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 Mar 2016 | 17 Mar 2016 | 001-07562 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Mar 2016 | 14 Mar 2016 | 001-07562 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Jul 2015 | 07 Jul 2015 | 001-07562 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Jul 2015 | 01 Jul 2015 | 001-07562 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Jun 2015 | 22 Jun 2015 | 001-07562 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Jun 2015 | 01 Jun 2015 | 001-07562 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Mar 2015 | 18 Mar 2015 | 001-07562 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Mar 2015 | 16 Mar 2015 | 001-07562 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Mar 2015 | 12 Mar 2015 | 001-07562 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Feb 2015 | 01 Feb 2015 | 001-07562 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Dec 2014 | 01 Dec 2014 | 001-07562 |