| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 09 May 2025 | 07 May 2025 | 000-19969 | |
| 4 | Open Document | Open Filing | 08 May 2025 | 06 May 2025 | 000-19969 | |
| 4 | Open Document | Open Filing | 09 May 2024 | 07 May 2024 | 000-19969 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 09 May 2023 | 05 May 2023 | 000-19969 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 10 May 2022 | 06 May 2022 | 000-19969 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Feb 2022 | 07 Feb 2022 | 000-19969 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 13 May 2021 | 11 May 2021 | 000-19969 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 14 May 2020 | 12 May 2020 | 000-19969 |
| 4 | Open Document | Open Filing | FORM 4 | 13 Jan 2020 | 09 Jan 2020 | 000-25131 |
| 4 | Open Document | Open Filing | FORM 4 | 06 Jan 2020 | 02 Jan 2020 | 000-25131 |
| 4 | Open Document | Open Filing | FORM 4 | 31 Oct 2019 | 29 Oct 2019 | 000-25131 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 13 May 2019 | 09 May 2019 | 000-19969 |
| 4/A | Open Document | Open Filing | FORM 4/A SUBMISSION | 06 Feb 2019 | 01 Aug 2018 | 000-19969 |
| 4 | Open Document | Open Filing | FORM 4 | 04 Jan 2019 | 02 Jan 2019 | 000-25131 |
| 4 | Open Document | Open Filing | FORM 4 | 07 Nov 2018 | 06 Nov 2018 | 000-25131 |
| 4 | Open Document | Open Filing | FORM 4 | 31 Oct 2018 | 29 Oct 2018 | 000-25131 |
| 3 | Open Document | Open Filing | FORM 3 | 31 Oct 2018 | 29 Oct 2018 | 000-25131 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 05 Sep 2018 | 01 Aug 2018 | 000-19969 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 16 May 2017 | 12 May 2017 | 000-19969 |
| 4 | Open Document | Open Filing | FORM 4 | 04 Apr 2017 | 31 Mar 2017 | 001-32637 |
| 4 | Open Document | Open Filing | FORM 4 | 08 Mar 2017 | 06 Mar 2017 | 001-32637 |
| 4 | Open Document | Open Filing | FORM 4 | 07 Mar 2017 | 03 Mar 2017 | 001-32637 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 14 Nov 2016 | 10 Nov 2016 | 000-19969 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 01 Nov 2016 | 25 Oct 2016 | 000-19969 |
| 4 | Open Document | Open Filing | FORM 4 | 11 Apr 2016 | 07 Apr 2016 | 001-32637 |
| 4 | Open Document | Open Filing | FORM 4 | 09 Mar 2016 | 07 Mar 2016 | 001-32637 |
| 4 | Open Document | Open Filing | FORM 4 | 08 Mar 2016 | 07 Mar 2016 | 001-32637 |
| 4 | Open Document | Open Filing | FORM 4 | 01 Mar 2016 | 26 Feb 2016 | 001-32637 |
| 4 | Open Document | Open Filing | FORM 4 | 24 Feb 2016 | 22 Feb 2016 | 001-32637 |
| 4 | Open Document | Open Filing | FORM 4 | 22 Oct 2015 | 20 Oct 2015 | 001-32637 |
| 4 | Open Document | Open Filing | FORM 4 | 01 Apr 2015 | 30 Mar 2015 | 001-32637 |
| 4 | Open Document | Open Filing | FORM 4 | 10 Mar 2015 | 06 Mar 2015 | 001-32637 |
| 4 | Open Document | Open Filing | FORM 4 | 24 Feb 2015 | 22 Feb 2015 | 001-32637 |
| 4 | Open Document | Open Filing | FORM 4 | 10 Feb 2015 | 07 Feb 2015 | 001-32637 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Apr 2014 | 02 Apr 2014 | 001-32637 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Mar 2014 | 07 Mar 2014 | 001-32637 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 Feb 2014 | 22 Feb 2014 | 001-32637 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Feb 2014 | 07 Feb 2014 | 001-32637 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Feb 2014 | 02 Feb 2014 | 001-32637 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 Sep 2013 | 20 Sep 2013 | 001-32637 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Feb 2013 | 22 Feb 2013 | 001-32637 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 Oct 2012 | 21 Aug 2012 | 001-32637 |