| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 17 Jun 2022 | 15 Jun 2022 | 001-39973 | |
| 4 | Open Document | Open Filing | 08 Dec 2020 | 01 Dec 2020 | 000-54923 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 30 Nov 2020 | 20 Nov 2020 | 000-54923 |
| 4 | Open Document | Open Filing | 19 Aug 2020 | 13 Aug 2020 | 000-54923 | |
| 4 | Open Document | Open Filing | 19 May 2020 | 27 Dec 2019 | 000-54923 | |
| 4 | Open Document | Open Filing | 13 Aug 2019 | 01 Jul 2019 | 000-54923 | |
| 4 | Open Document | Open Filing | 18 Jun 2019 | 06 Feb 2019 | 000-54923 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 24 Jan 2019 | 13 Sep 2018 | 000-54923 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 06 Sep 2017 | 16 Jun 2016 | 000-54923 |
| 3/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | 06 Sep 2017 | 08 Jan 2016 | 000-54923 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 07 Sep 2016 | 08 Jan 2016 | 000-54923 |