| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 16 Dec 2021 | 14 Dec 2021 | 000-22873 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 23 Nov 2021 | 22 Nov 2021 | 000-22873 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 23 Dec 2020 | 21 Dec 2020 | 000-22873 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 05 Apr 2017 | 04 Apr 2017 | 000-22873 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 01 Mar 2017 | 27 Feb 2017 | 000-22873 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 21 Feb 2017 | 16 Feb 2017 | 000-22873 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 21 Sep 2016 | 20 Sep 2016 | 000-22873 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 13 Jun 2016 | 09 Jun 2016 | 000-22873 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 06 Apr 2016 | 05 Apr 2016 | 000-22873 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 02 Mar 2016 | 01 Mar 2016 | 000-22873 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 21 Sep 2015 | 18 Sep 2015 | 000-22873 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 17 Feb 2015 | 12 Feb 2015 | 000-22873 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 03 Mar 2014 | 27 Feb 2014 | 000-22873 |