| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 4 | 03 Jan 2024 | 29 Dec 2023 | 000-15946 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 24 Jan 2023 | 20 Jan 2023 | 000-15946 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 07 Dec 2021 | 01 Dec 2021 | 000-15946 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 21 Dec 2020 | 17 Dec 2020 | 000-15946 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 01 Oct 2019 | 27 Sep 2019 | 000-15946 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 07 Jan 2019 | 31 Dec 2018 | 000-15946 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 11 Jul 2017 | 30 Jun 2017 | 000-15946 |
| 4 | Open Document | Open Filing | FORM 4 | 18 May 2017 | 16 May 2017 | 001-37763 |
| 3 | Open Document | Open Filing | FORM 3 | 10 May 2016 | 10 May 2016 | 001-37763 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 04 May 2016 | 02 May 2016 | 000-15946 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 30 Apr 2015 | 14 Apr 2015 | 000-15946 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 06 Apr 2015 | 25 Mar 2015 | 000-15946 |