| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 15 Jul 2022 | 10 May 2022 | 000-20214 |
| 4 | Open Document | Open Filing | FORM 4 | 20 May 2022 | 18 May 2022 | 000-20214 |
| 4 | Open Document | Open Filing | FORM 4 | 12 May 2022 | 10 May 2022 | 000-20214 |
| 4 | Open Document | Open Filing | FORM 4 | 19 Jan 2022 | 18 Jan 2022 | 000-20214 |
| 4 | Open Document | Open Filing | FORM 4 | 07 Jul 2021 | 02 Jul 2021 | 000-20214 |
| 4 | Open Document | Open Filing | FORM 4 | 19 May 2021 | 18 May 2021 | 000-20214 |
| 4 | Open Document | Open Filing | FORM 4 | 12 May 2021 | 10 May 2021 | 000-20214 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Jun 2020 | 08 Jun 2020 | 000-20214 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 May 2020 | 18 May 2020 | 000-20214 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 May 2020 | 18 May 2020 | 000-20214 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 23 Aug 2019 | 21 Aug 2019 | 001-13692 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 31 Jan 2019 | 29 Jan 2019 | 001-13692 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 26 Jan 2018 | 24 Jan 2018 | 001-13692 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 25 Jan 2017 | 23 Jan 2017 | 001-13692 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 17 Mar 2016 | 15 Mar 2016 | 001-13692 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 17 Mar 2016 | 15 Mar 2016 | 001-13692 |