| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 04 Jan 2022 | 30 Dec 2021 | 000-15946 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 05 Jan 2021 | 31 Dec 2020 | 000-15946 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 03 Aug 2020 | 30 Jul 2020 | 000-15946 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 19 Mar 2020 | 18 Mar 2020 | 000-15946 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 16 Mar 2020 | 13 Mar 2020 | 000-15946 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 13 Mar 2020 | 12 Mar 2020 | 000-15946 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 10 Mar 2020 | 09 Mar 2020 | 000-15946 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 06 Mar 2020 | 05 Mar 2020 | 000-15946 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 06 Jan 2020 | 02 Jan 2020 | 000-15946 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 03 Jan 2020 | 31 Dec 2019 | 000-15946 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 15 Apr 2019 | 10 Apr 2019 | 000-15946 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 09 Jan 2019 | 07 Jan 2019 | 000-15946 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 21 Dec 2018 | 21 Dec 2018 | 000-15946 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 13 Nov 2018 | 12 Nov 2018 | 000-15946 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 31 Jul 2017 | 25 Jul 2017 | 000-15946 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 10 Nov 2015 | 05 Nov 2015 | 000-15946 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 13 Aug 2015 | 13 Aug 2015 | 000-15946 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 06 Feb 2014 | 03 Feb 2014 | 000-15946 |