| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jun 8, 2022 | Jun 6, 2022 | 000-19961 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jun 23, 2021 | Jun 21, 2021 | 000-19961 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jun 10, 2020 | Jun 8, 2020 | 000-19961 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jun 13, 2019 | Jun 11, 2019 | 000-19961 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jul 17, 2018 | Jul 17, 2018 | 000-19961 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 13, 2018 | Mar 12, 2018 | 000-19961 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | Mar 13, 2018 | Mar 12, 2018 | 000-19961 |