| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 21 Nov 2022 | 17 Nov 2022 | 000-21767 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 13 Dec 2021 | 04 Dec 2021 | 000-21767 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 23 Dec 2019 | 19 Dec 2019 | 000-21767 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 19 Nov 2019 | 15 Nov 2019 | 000-21767 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 19 Dec 2018 | 17 Dec 2018 | 000-21767 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 12 Dec 2018 | 11 Dec 2018 | 000-21767 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 20 Nov 2018 | 17 Nov 2018 | 000-21767 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 05 Jun 2018 | 01 Jun 2018 | 000-21767 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 19 Dec 2017 | 17 Dec 2017 | 000-21767 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 21 Nov 2017 | 17 Nov 2017 | 000-21767 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 21 Nov 2016 | 17 Nov 2016 | 000-21767 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 14 Sep 2016 | 08 Sep 2016 | 000-21767 |
| 4 | Open Document | Open Filing | FORM 4 | 31 Mar 2015 | 29 Mar 2015 | 001-34272 |
| 4 | Open Document | Open Filing | FORM 4 | 11 Feb 2015 | 10 Feb 2015 | 001-34272 |
| 4 | Open Document | Open Filing | FORM 4 | 02 Sep 2014 | 28 Aug 2014 | 001-34272 |
| 4 | Open Document | Open Filing | FORM 4 | 01 Apr 2014 | 29 Mar 2014 | 001-34272 |