| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 31, 2022 | Mar 29, 2022 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 7, 2022 | Mar 3, 2022 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 4, 2022 | Mar 2, 2022 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 1, 2022 | Feb 28, 2022 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 17, 2021 | Dec 15, 2021 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 16, 2021 | Sep 15, 2021 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 23, 2021 | Jun 21, 2021 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 30, 2021 | Mar 29, 2021 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 9, 2021 | Mar 7, 2021 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 4, 2021 | Mar 2, 2021 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 22, 2020 | Dec 18, 2020 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 22, 2020 | Sep 18, 2020 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 22, 2020 | Jun 19, 2020 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 30, 2020 | Mar 26, 2020 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 10, 2020 | Mar 8, 2020 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 5, 2020 | Mar 3, 2020 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 13, 2020 | Feb 12, 2020 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 20, 2019 | Dec 18, 2019 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 20, 2019 | Sep 18, 2019 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 21, 2019 | Jun 19, 2019 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 | Apr 5, 2019 | Apr 4, 2019 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 27, 2019 | Mar 26, 2019 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 7, 2019 | Mar 5, 2019 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 5, 2019 | Mar 2, 2019 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 20, 2018 | Dec 19, 2018 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 1, 2018 | Oct 31, 2018 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 21, 2018 | Sep 19, 2018 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 21, 2018 | Jun 20, 2018 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 | May 15, 2018 | May 14, 2018 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 23, 2018 | Mar 21, 2018 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 8, 2018 | Mar 6, 2018 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 6, 2018 | Mar 4, 2018 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 7, 2017 | Aug 3, 2017 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 9, 2017 | Mar 7, 2017 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 7, 2017 | Mar 6, 2017 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 23, 2016 | Nov 22, 2016 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 3, 2016 | Mar 1, 2016 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 1, 2016 | Feb 26, 2016 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 24, 2016 | Feb 22, 2016 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 19, 2015 | May 15, 2015 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 5, 2015 | Mar 4, 2015 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 24, 2015 | Feb 23, 2015 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jul 31, 2014 | Jul 29, 2014 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 20, 2014 | May 19, 2014 | 001-08454 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 7, 2014 | Mar 5, 2014 | 001-08454 |