| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 18 Aug 2022 | 16 Aug 2022 | 000-20214 |
| 4 | Open Document | Open Filing | FORM 4 | 15 Jul 2022 | 10 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 | 05 May 2022 | 04 May 2022 | 000-20214 |
| 4 | Open Document | Open Filing | FORM 4 | 11 Jan 2022 | 07 Jan 2022 | 000-20214 |
| 4 | Open Document | Open Filing | FORM 4 | 08 Nov 2021 | 04 Nov 2021 | 000-20214 |
| 4 | Open Document | Open Filing | FORM 4 | 12 May 2021 | 10 May 2021 | 000-20214 |
| 4 | Open Document | Open Filing | FORM 4 | 05 May 2021 | 04 May 2021 | 000-20214 |
| 4 | Open Document | Open Filing | FORM 4 | 19 Apr 2021 | 16 Apr 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 | 06 May 2020 | 04 May 2020 | 000-20214 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 May 2020 | 04 May 2020 | 000-20214 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 07 Jan 2020 | 03 Jan 2020 | 001-04881 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 02 Jan 2020 | 30 Dec 2019 | 001-04881 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 01 May 2019 | 01 May 2019 | 001-04881 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 01 May 2019 | 01 May 2019 | 001-04881 |