| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 28 Mar 2022 | 24 Mar 2022 | 001-40360 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 10 Jan 2022 | 01 Jan 2022 | 001-40360 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 18 Aug 2021 | 16 Aug 2021 | 001-40030 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 18 Aug 2021 | 16 Aug 2021 | 001-40030 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 31 Jan 2019 | 29 Jan 2019 | 000-20713 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 15 Jan 2019 | 14 Jan 2019 | 000-20713 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 06 Oct 2017 | 10 Jul 2017 | 000-20713 |
| 4 | Open Document | Open Filing | FORM 4 | 03 Oct 2017 | 29 Sep 2017 | 000-20713 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 09 Jun 2017 | 08 Jun 2017 | 000-20713 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 27 Jun 2016 | 24 Jun 2016 | 000-20713 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 03 Jun 2016 | 02 Jun 2016 | 000-20713 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 04 Mar 2016 | 02 Mar 2016 | 000-20713 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 21 Jan 2016 | 19 Jan 2016 | 000-20713 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 08 Apr 2015 | 06 Apr 2015 | 000-20713 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 14 Nov 2014 | 17 Sep 2014 | 000-20713 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 04 Apr 2014 | 03 Apr 2014 | 000-20713 |