| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | May 17, 2023 | May 15, 2023 | 001-06903 |
| 4 | Open Document | Open Filing | FORM 4 | May 10, 2023 | May 8, 2023 | 001-06903 |
| 4 | Open Document | Open Filing | FORM 4 | May 17, 2022 | May 15, 2022 | 001-06903 |
| 4 | Open Document | Open Filing | FORM 4 | May 11, 2022 | May 9, 2022 | 001-06903 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 18, 2021 | May 15, 2021 | 001-06903 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 5, 2021 | May 3, 2021 | 001-06903 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 18, 2020 | May 15, 2020 | 001-06903 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 6, 2020 | May 4, 2020 | 001-06903 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 17, 2019 | May 15, 2019 | 001-06903 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 8, 2019 | May 6, 2019 | 001-06903 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 8, 2018 | Nov 1, 2018 | 001-06903 |