| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 09 Feb 2023 | 07 Feb 2023 | 000-20728 |
| 4 | Open Document | Open Filing | FORM 4 | 02 Jun 2022 | 02 Jun 2022 | 000-20728 |
| 4 | Open Document | Open Filing | FORM 4 | 17 May 2022 | 17 May 2022 | 000-20728 |
| 4 | Open Document | Open Filing | FORM 4 | 12 Nov 2021 | 11 Nov 2021 | 000-20728 |
| 4 | Open Document | Open Filing | FORM 4 | 03 Aug 2021 | 03 Aug 2021 | 000-20728 |
| 4 | Open Document | Open Filing | FORM 4 | 17 May 2021 | 17 May 2021 | 000-20728 |
| 4 | Open Document | Open Filing | FORM 4 | 07 May 2021 | 06 May 2021 | 000-20728 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Feb 2021 | 29 Jan 2021 | 000-20728 |
| 4 | Open Document | Open Filing | FORM 4 | 01 Oct 2020 | 29 Sep 2020 | 000-20728 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Feb 2020 | 10 Feb 2020 | 000-20728 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Nov 2019 | 07 Nov 2019 | 000-20728 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Nov 2019 | 31 Oct 2019 | 000-20728 |
| 4 | Open Document | Open Filing | 06 Jul 2017 | 03 Jul 2017 | 001-32408 | |
| 4 | Open Document | Open Filing | FORM 4 | 24 Jan 2017 | 23 Jan 2017 | 001-32408 |
| 4 | Open Document | Open Filing | FORM 4 | 25 Jan 2016 | 22 Jan 2016 | 001-32408 |
| 4 | Open Document | Open Filing | FORM 4 | 23 Jan 2015 | 22 Jan 2015 | 001-32408 |
| 4/A | Open Document | Open Filing | FORM 4/A SUBMISSION | 21 Nov 2014 | 20 May 2014 | 001-32408 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 21 May 2014 | 20 May 2014 | 001-32408 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 24 Jan 2014 | 22 Jan 2014 | 001-32408 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 12 Mar 2013 | 08 Mar 2013 | 000-26123 |
| 4 | Open Document | Open Filing | MAIN DOCUMENT DESCRIPTION | 24 Jan 2013 | 22 Jan 2013 | 001-32408 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 10 Dec 2012 | 08 Dec 2012 | 000-26123 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 12 Sep 2012 | 08 Sep 2012 | 000-26123 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 10 Sep 2012 | 08 Sep 2012 | 000-26123 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 12 Jun 2012 | 08 Jun 2012 | 000-26123 |
| 4 | Open Document | Open Filing | MAIN DOCUMENT DESCRIPTION | 15 May 2012 | 11 May 2012 | 001-32408 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 14 Mar 2012 | 08 Mar 2012 | 000-26123 |