| 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 | 07 Jun 2023 | 06 Jun 2023 | 000-03905 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 26 May 2023 | 26 May 2023 | 000-03905 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 04 Nov 2022 | 03 Nov 2022 | 000-03905 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 08 Sep 2022 | 07 Sep 2022 | 000-03905 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 10 Aug 2022 | 09 Aug 2022 | 000-03905 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 10 Jun 2022 | 08 Jun 2022 | 000-03905 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 12 Nov 2021 | 10 Nov 2021 | 000-03905 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Sep 2021 | 08 Sep 2021 | 000-03905 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Aug 2021 | 30 Jul 2021 | 000-03905 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 Feb 2021 | 24 Feb 2021 | 000-03905 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Dec 2020 | 02 Dec 2020 | 000-03905 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Sep 2020 | 11 Sep 2020 | 000-03905 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Sep 2020 | 09 Sep 2020 | 000-03905 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Jun 2020 | 08 Jun 2020 | 000-03905 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Sep 2019 | 11 Sep 2019 | 000-03905 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Jun 2019 | 03 Jun 2019 | 000-03905 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 May 2019 | 22 May 2019 | 000-03905 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 May 2018 | 23 May 2018 | 000-03905 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Jan 2017 | 03 Jan 2017 | 000-03905 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 28 Jan 2016 | 27 Jan 2016 | 000-26481 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 04 Jan 2016 | 31 Dec 2015 | 000-26481 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 27 Feb 2015 | 25 Feb 2015 | 000-26481 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 30 Jan 2015 | 28 Jan 2015 | 000-26481 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 05 Nov 2014 | 04 Nov 2014 | 000-26481 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 19 Feb 2014 | 15 Feb 2014 | 000-26481 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 23 Jan 2014 | 21 Aug 2013 | 000-26481 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Nov 2013 | 13 Nov 2013 | 000-03905 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 25 Feb 2013 | 23 Feb 2013 | 000-26481 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 20 Feb 2013 | 15 Feb 2013 | 000-26481 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 15 Feb 2013 | 13 Feb 2013 | 000-26481 |
| 5 | Open Document | Open Filing | FORM 5 SUBMISSION | 13 Feb 2013 | 31 Dec 2012 | 000-26481 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 14 Sep 2012 | 13 Sep 2012 | 000-26481 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Aug 2012 | 08 Aug 2012 | 000-03905 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 07 May 2012 | 03 May 2012 | 000-26481 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 27 Feb 2012 | 23 Feb 2012 | 000-26481 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 17 Feb 2012 | 15 Feb 2012 | 000-26481 |
| 5 | Open Document | Open Filing | FORM 5 SUBMISSION | 14 Feb 2012 | 31 Dec 2011 | 000-26481 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 18 Jan 2012 | 18 Jan 2012 | 000-26481 |