| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 15 Dec 2022 | 13 Dec 2022 | 001-36041 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 10 Feb 2022 | 08 Feb 2022 | 001-36041 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 16 Dec 2021 | 16 Dec 2021 | 001-36041 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 16 Dec 2021 | 16 Dec 2021 | 001-36041 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 16 Dec 2021 | 16 Dec 2021 | 000-55428 |
| 4 | Open Document | Open Filing | FORM 4 | 12 Apr 2021 | 08 Apr 2021 | 000-55428 |
| 4 | Open Document | Open Filing | FORM 4 | 16 Mar 2021 | 15 Mar 2021 | 000-55428 |
| 4 | Open Document | Open Filing | FORM 4 | 15 Dec 2020 | 11 Dec 2020 | 000-55428 |
| 4 | Open Document | Open Filing | FORM 4 | 13 Nov 2020 | 12 Nov 2020 | 000-55428 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Sep 2020 | 01 Sep 2020 | 000-55428 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 06 Mar 2020 | 06 Mar 2020 | 000-55772 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 06 Mar 2020 | 06 Mar 2020 | 000-54674 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 06 Mar 2020 | 06 Mar 2020 | 000-55428 |
| 3 | Open Document | Open Filing | FORM 3 | 21 Apr 2017 | 21 Apr 2017 | 000-55772 |
| 3 | Open Document | Open Filing | FORM 3 | 20 Apr 2015 | 20 Apr 2015 | 000-55428 |
| 4 | Open Document | Open Filing | FORM 4 | 02 Oct 2013 | 01 Oct 2013 | 000-54674 |
| 4 | Open Document | Open Filing | FORM 4 | 02 Jul 2013 | 01 Jul 2013 | 000-54674 |
| 4 | Open Document | Open Filing | FORM 4 | 03 Apr 2013 | 01 Apr 2013 | 000-54674 |
| 4 | Open Document | Open Filing | FORM 4 | 04 Jan 2013 | 02 Jan 2013 | 000-54674 |
| 4 | Open Document | Open Filing | FORM 4 | 09 Aug 2012 | 08 Aug 2012 | 000-54674 |
| 3 | Open Document | Open Filing | FORM 3 | 27 Apr 2012 | 27 Apr 2012 | 333-160748 |