| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | May 2, 2022 | Apr 29, 2022 | 000-26099 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 25, 2022 | Mar 23, 2022 | 000-26099 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 15, 2022 | Feb 14, 2022 | 000-26099 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 10, 2022 | Feb 4, 2022 | 000-26099 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 28, 2021 | Dec 23, 2021 | 000-26099 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 22, 2021 | Dec 21, 2021 | 000-26099 |
| 3 | Open Document | Open Filing | FORM 3 | Nov 16, 2021 | Nov 16, 2021 | 000-26099 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 16, 2021 | Nov 16, 2021 | 000-26099 |
| 4/A | Open Document | Open Filing | FORM 4/A SUBMISSION | Oct 1, 2021 | Sep 29, 2021 | 001-37416 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Oct 1, 2021 | Sep 29, 2021 | 001-37416 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Sep 23, 2021 | Sep 21, 2021 | 001-37416 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Aug 17, 2021 | Aug 16, 2021 | 001-37416 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 19, 2021 | May 17, 2021 | 001-37416 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 8, 2021 | Mar 7, 2021 | 001-37416 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 17, 2021 | Feb 16, 2021 | 001-37416 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jan 4, 2021 | Jan 1, 2021 | 001-37416 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Nov 17, 2020 | Nov 16, 2020 | 001-37416 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Aug 20, 2020 | Aug 17, 2020 | 001-37416 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jul 1, 2020 | Jul 1, 2020 | 001-37416 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 14, 2020 | May 11, 2020 | 001-37416 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 26, 2020 | Mar 26, 2020 | 001-37416 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 27, 2020 | Feb 27, 2020 | 001-37416 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 20, 2020 | Feb 18, 2020 | 001-37416 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jan 3, 2020 | Jan 1, 2020 | 001-37416 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Aug 2, 2019 | Jul 1, 2019 | 001-37416 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jan 2, 2019 | Jan 1, 2019 | 001-37416 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 14, 2018 | Mar 1, 2018 | 001-37416 |
| 3/A | Open Document | Open Filing | FORM 3/A SUBMISSION | Nov 21, 2017 | Nov 15, 2017 | 001-37416 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | Nov 20, 2017 | Nov 15, 2017 | 001-37416 |