| 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 | 05 Apr 2022 | 01 Apr 2022 | 001-04448 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 03 Mar 2022 | 01 Mar 2022 | 001-04448 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 03 Feb 2022 | 01 Feb 2022 | 001-04448 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 May 2021 | 04 May 2021 | 001-04448 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Sep 2020 | 14 Sep 2020 | 001-04448 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Jun 2020 | 15 Jun 2020 | 001-04448 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 May 2020 | 05 May 2020 | 001-04448 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Mar 2020 | 18 Mar 2020 | 001-04448 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Dec 2019 | 13 Dec 2019 | 001-04448 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Sep 2019 | 13 Sep 2019 | 001-04448 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Jun 2019 | 13 Jun 2019 | 001-04448 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 May 2019 | 07 May 2019 | 001-04448 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Mar 2019 | 13 Mar 2019 | 001-04448 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Dec 2018 | 13 Dec 2018 | 001-04448 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 May 2018 | 08 May 2018 | 001-04448 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Aug 2017 | 25 Aug 2017 | 001-04448 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 May 2017 | 02 May 2017 | 001-04448 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Feb 2017 | 08 Feb 2017 | 001-04448 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 07 Jun 2016 | 03 Jun 2016 | 001-36782 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 12 May 2016 | 10 May 2016 | 001-36782 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 May 2016 | 03 May 2016 | 001-04448 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 May 2016 | 02 May 2016 | 001-04448 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Apr 2016 | 04 Apr 2016 | 001-04448 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 28 Mar 2016 | 24 Mar 2016 | 001-36782 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Mar 2016 | 14 Mar 2016 | 001-04448 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 06 Jul 2015 | 01 Jul 2015 | 001-36782 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 06 Jul 2015 | 01 Jul 2015 | 001-04448 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 06 Jul 2015 | 01 Jul 2015 | 001-36782 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 May 2015 | 05 May 2015 | 001-04448 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Aug 2014 | 15 Aug 2014 | 001-04448 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 May 2014 | 06 May 2014 | 001-04448 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 May 2013 | 07 May 2013 | 001-04448 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 May 2012 | 08 May 2012 | 001-04448 |