| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Apr 11, 2022 | Apr 8, 2022 | 000-25837 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 16, 2022 | Mar 15, 2022 | 000-25837 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 10, 2022 | Mar 8, 2022 | 000-25837 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 1, 2021 | Oct 29, 2021 | 000-25837 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 30, 2021 | Sep 29, 2021 | 000-25837 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 31, 2021 | Aug 30, 2021 | 000-25837 |
| 4 | Open Document | Open Filing | FORM 4 | Jul 29, 2021 | Jul 29, 2021 | 000-25837 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 11, 2021 | Mar 9, 2021 | 000-25837 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 10, 2021 | Mar 8, 2021 | 000-25837 |
| 4/A | Open Document | Open Filing | FORM 4/A | Feb 8, 2021 | Feb 27, 2020 | 000-25837 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 10, 2020 | Mar 8, 2020 | 000-25837 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 2, 2020 | Feb 27, 2020 | 000-25837 |
| 3/A | Open Document | Open Filing | FORM 3/A SUBMISSION | Feb 28, 2020 | Feb 6, 2019 | 000-25837 |
| 5 | Open Document | Open Filing | FORM 5 SUBMISSION | Feb 14, 2020 | Dec 31, 2019 | 000-25837 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 13, 2019 | Mar 9, 2019 | 000-25837 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 12, 2019 | Mar 8, 2019 | 000-25837 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | Feb 21, 2019 | Feb 6, 2019 | 000-25837 |