| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 13 Oct 2021 | 11 Oct 2021 | 000-53754 | |
| 4 | Open Document | Open Filing | 08 Oct 2021 | 07 Oct 2021 | 000-53754 | |
| 4 | Open Document | Open Filing | 06 Oct 2021 | 04 Oct 2021 | 000-53754 | |
| 4 | Open Document | Open Filing | 05 Oct 2021 | 01 Oct 2021 | 000-53754 | |
| 4 | Open Document | Open Filing | 05 Oct 2021 | 01 Oct 2021 | 000-53754 | |
| 4 | Open Document | Open Filing | 01 Oct 2021 | 29 Sep 2021 | 000-53754 | |
| 4 | Open Document | Open Filing | 18 Feb 2021 | 16 Feb 2021 | 000-53754 | |
| 4 | Open Document | Open Filing | 12 Feb 2021 | 11 Feb 2021 | 000-53754 | |
| 4 | Open Document | Open Filing | 05 Feb 2021 | 05 Feb 2021 | 000-53754 | |
| 4 | Open Document | Open Filing | 29 Jan 2021 | 27 Jan 2021 | 000-53754 | |
| 4/A | Open Document | Open Filing | 22 Jan 2021 | 15 Jan 2021 | 000-53754 | |
| 4 | Open Document | Open Filing | 22 Jan 2021 | 21 Jan 2021 | 000-53754 | |
| 4 | Open Document | Open Filing | 19 Jan 2021 | 15 Jan 2021 | 000-53754 | |
| 4 | Open Document | Open Filing | 05 Nov 2020 | 03 Nov 2020 | 000-53754 | |
| 4 | Open Document | Open Filing | 28 Oct 2020 | 27 Oct 2020 | 000-53754 | |
| 4 | Open Document | Open Filing | 15 Oct 2020 | 15 Oct 2020 | 000-53754 | |
| 4 | Open Document | Open Filing | 13 Oct 2020 | 08 Oct 2020 | 000-53754 | |
| 4 | Open Document | Open Filing | 24 Sep 2020 | 22 Sep 2020 | 000-53754 | |
| 4 | Open Document | Open Filing | 10 Sep 2020 | 08 Sep 2020 | 000-53754 | |
| 4 | Open Document | Open Filing | 04 Sep 2020 | 01 Sep 2020 | 000-53754 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 27 Mar 2019 | 07 Mar 2019 | 000-53754 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 09 May 2018 | 07 May 2018 | 000-53754 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 27 Dec 2017 | 17 Dec 2017 | 000-53754 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 27 Dec 2017 | 17 Dec 2017 | 000-53754 |