| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 28 Mar 2022 | 24 Mar 2022 | 001-13251 |
| 4 | Open Document | Open Filing | FORM 4 | 27 Dec 2021 | 23 Dec 2021 | 001-13251 |
| 4 | Open Document | Open Filing | FORM 4 | 27 Sep 2021 | 23 Sep 2021 | 001-13251 |
| 4 | Open Document | Open Filing | FORM 4 | 10 Jun 2021 | 08 Jun 2021 | 001-13251 |
| 4 | Open Document | Open Filing | FORM 4 | 03 Nov 2020 | 30 Oct 2020 | 001-13251 |
| 4 | Open Document | Open Filing | FORM 4 | 22 Jun 2020 | 18 Jun 2020 | 001-13251 |
| 4 | Open Document | Open Filing | FORM 4 | 29 Jan 2020 | 27 Jan 2020 | 001-13251 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 24 Jun 2019 | 20 Jun 2019 | 001-13251 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Mar 2019 | 04 Mar 2019 | 001-13251 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 Jun 2018 | 21 Jun 2018 | 001-13251 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 May 2018 | 30 Apr 2018 | 001-13251 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Dec 2017 | 04 Dec 2017 | 001-13251 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Jun 2017 | 22 Jun 2017 | 001-13251 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 Jan 2017 | 23 Jan 2017 | 001-13251 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 16 Aug 2016 | 16 Aug 2016 | 814-00646 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Jun 2016 | 23 Jun 2016 | 001-13251 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Oct 2015 | 28 Oct 2015 | 001-13251 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 10 Aug 2015 | 07 Aug 2015 | 814-00646 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Jun 2015 | 26 Jun 2015 | 001-13251 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 05 Jun 2015 | 22 May 2015 | 814-00646 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Jun 2014 | 26 Jun 2014 | 001-13251 |
| 4 | Open Document | Open Filing | FORM 4 | 09 Jun 2014 | 05 Jun 2014 | 001-32551 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 28 May 2014 | 27 May 2014 | 814-00646 |
| 4 | Open Document | Open Filing | FORM 4 | 13 May 2014 | 12 May 2014 | 001-32551 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 May 2014 | 30 Apr 2014 | 001-13251 |