| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 31, 2022 | May 26, 2022 | 001-15997 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jun 1, 2021 | May 27, 2021 | 001-15997 |
| 4 | Open Document | Open Filing | FORM 4 | Apr 30, 2021 | Apr 28, 2021 | 001-40136 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jan 19, 2021 | Jan 15, 2021 | 001-16811 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 29, 2020 | May 28, 2020 | 001-15997 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jan 17, 2020 | Jan 15, 2020 | 001-16811 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 31, 2019 | May 30, 2019 | 001-15997 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jan 17, 2019 | Jan 15, 2019 | 001-16811 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jun 1, 2018 | May 31, 2018 | 001-15997 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 16, 2018 | Mar 15, 2018 | 001-16811 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jan 17, 2018 | Jan 16, 2018 | 001-16811 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 26, 2017 | May 25, 2017 | 001-15997 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jan 19, 2017 | Jan 17, 2017 | 001-16811 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 27, 2016 | May 26, 2016 | 001-15997 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jan 20, 2016 | Jan 15, 2016 | 001-16811 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 29, 2015 | May 28, 2015 | 001-15997 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 18, 2015 | Feb 16, 2015 | 001-16811 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 3, 2015 | Feb 2, 2015 | 001-16811 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | Jan 6, 2015 | Jan 1, 2015 | 001-16811 |
| 4 | Open Document | Open Filing | FORM 4 | Jul 16, 2014 | Jul 15, 2014 | 001-15997 |
| 3 | Open Document | Open Filing | FORM 3 | May 30, 2014 | May 29, 2014 | 001-15997 |