| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Aug 18, 2023 | Aug 17, 2023 | 000-22490 |
| 4 | Open Document | Open Filing | FORM 4 | May 11, 2023 | May 10, 2023 | 000-22490 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 1, 2023 | Apr 27, 2023 | 001-36847 |
| 4 | Open Document | Open Filing | FORM 4 | May 12, 2022 | May 11, 2022 | 000-22490 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 2, 2022 | Apr 28, 2022 | 001-36847 |
| 4 | Open Document | Open Filing | FORM 4 | May 24, 2021 | May 20, 2021 | 000-22490 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 4, 2021 | Apr 30, 2021 | 001-36847 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 17, 2021 | Mar 15, 2021 | 000-22490 |
| 3 | Open Document | Open Filing | FORM 3 | Mar 17, 2021 | Mar 15, 2021 | 000-22490 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 1, 2020 | Apr 30, 2020 | 001-36847 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 6, 2019 | May 2, 2019 | 001-36847 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Sep 11, 2018 | Sep 10, 2018 | 001-36847 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | Sep 11, 2018 | Sep 10, 2018 | 001-36847 |