| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 4, 2022 | May 2, 2022 | 000-22496 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Nov 9, 2021 | Nov 5, 2021 | 000-22496 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Nov 3, 2021 | Nov 1, 2021 | 000-22496 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 5, 2021 | May 3, 2021 | 000-22496 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Nov 12, 2020 | Nov 9, 2020 | 000-22496 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Nov 4, 2020 | Nov 2, 2020 | 000-22496 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Apr 30, 2020 | Apr 28, 2020 | 000-22496 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Nov 5, 2019 | Nov 1, 2019 | 000-22496 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 19, 2018 | Nov 15, 2018 | 000-22496 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 2, 2018 | Oct 31, 2018 | 000-22496 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 16, 2017 | Nov 14, 2017 | 000-22496 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 2, 2017 | Oct 31, 2017 | 000-22496 |
| 4 | Open Document | Open Filing | FORM 4 | Apr 28, 2017 | Apr 27, 2017 | 000-22496 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 8, 2016 | Nov 4, 2016 | 000-22496 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 2, 2016 | Oct 31, 2016 | 000-22496 |
| 4 | Open Document | Open Filing | FORM 4 | Apr 29, 2016 | Apr 27, 2016 | 000-22496 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 12, 2015 | Nov 9, 2015 | 000-22496 |
| 3 | Open Document | Open Filing | FORM 3 | Jul 30, 2015 | Jul 20, 2015 | 000-22496 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 5, 2014 | Sep 30, 2014 | 001-14287 |
| 4/A | Open Document | Open Filing | FORM 4/A | Dec 5, 2014 | Nov 21, 2014 | 001-14287 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 25, 2014 | Nov 21, 2014 | 001-14287 |
| 4 | Open Document | Open Filing | FORM 4 | May 12, 2014 | May 8, 2014 | 001-14287 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 4, 2014 | Mar 1, 2014 | 001-14287 |