| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 15 Jun 2022 | 14 Jun 2022 | 000-31157 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 08 Jun 2022 | 06 Jun 2022 | 000-31157 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 03 Jun 2022 | 01 Jun 2022 | 000-31157 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 02 Jun 2022 | 31 May 2022 | 000-31157 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 31 May 2022 | 27 May 2022 | 000-31157 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 27 May 2022 | 25 May 2022 | 000-31157 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 04 May 2022 | 02 May 2022 | 000-31157 |
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | 07 Jan 2022 | 03 Jan 2022 | 000-31157 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 04 Jan 2022 | 03 Jan 2022 | 000-31157 |
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | 15 Mar 2021 | 10 Mar 2021 | 000-31157 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 15 Mar 2021 | 11 Mar 2021 | 000-31157 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 11 Mar 2021 | 10 Mar 2021 | 000-31157 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 09 Mar 2021 | 08 Mar 2021 | 000-31157 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 05 Mar 2021 | 04 Mar 2021 | 000-31157 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 04 Mar 2021 | 03 Mar 2021 | 000-31157 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 03 Mar 2021 | 02 Mar 2021 | 000-31157 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 26 Feb 2021 | 25 Feb 2021 | 000-31157 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 06 Jan 2021 | 04 Jan 2021 | 000-31157 |
| 4 | Open Document | Open Filing | 4 | 10 Jun 2020 | 09 Jun 2020 | 000-31157 |
| 4 | Open Document | Open Filing | 4 | 06 Jan 2020 | 02 Jan 2020 | 000-31157 |
| 4 | Open Document | Open Filing | 4 | 15 Aug 2019 | 14 Aug 2019 | 000-31157 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 May 2019 | 09 May 2019 | 001-11353 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 May 2019 | 03 May 2019 | 001-11353 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Feb 2019 | 12 Feb 2019 | 001-11353 |
| 4 | Open Document | Open Filing | FORM 4 - | 04 Jan 2019 | 02 Jan 2019 | 000-31157 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Feb 2018 | 12 Feb 2018 | 001-11353 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Feb 2018 | 07 Feb 2018 | 001-11353 |
| 4 | Open Document | Open Filing | FORM 4 - | 03 Jan 2018 | 02 Jan 2018 | 000-31157 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Feb 2017 | 24 Feb 2017 | 001-11353 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Feb 2017 | 09 Feb 2017 | 001-11353 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Feb 2017 | 07 Feb 2017 | 001-11353 |
| 4 | Open Document | Open Filing | FORM 4 - | 03 Jan 2017 | 02 Jan 2017 | 000-31157 |
| 4 | Open Document | Open Filing | FORM 4 - | 03 Oct 2016 | 12 Nov 2015 | 000-31157 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Aug 2016 | 04 Aug 2016 | 001-11353 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 06 Jul 2016 | 01 Jul 2016 | 001-13779 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Mar 2016 | 11 Mar 2016 | 001-11353 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Feb 2016 | 09 Feb 2016 | 001-11353 |
| 4 | Open Document | Open Filing | FORM 4 - | 05 Jan 2016 | 04 Jan 2016 | 000-31157 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 02 Jul 2015 | 01 Jul 2015 | 001-13779 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 15 Jun 2015 | 11 Jun 2015 | 001-13779 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 May 2015 | 19 May 2015 | 001-11353 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Mar 2015 | 11 Mar 2015 | 001-11353 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Feb 2015 | 10 Feb 2015 | 001-11353 |
| 4 | Open Document | Open Filing | FORM 4 - | 05 Jan 2015 | 31 Dec 2014 | 000-31157 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 02 Jul 2014 | 01 Jul 2014 | 001-13779 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 May 2014 | 13 May 2014 | 001-11353 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 May 2014 | 08 May 2014 | 001-11353 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 May 2014 | 30 Apr 2014 | 001-11353 |