| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | Feb 22, 2024 | Feb 20, 2024 | 001-08339 | |
| 4 | Open Document | Open Filing | Feb 1, 2024 | Jan 30, 2024 | 001-08339 | |
| 4 | Open Document | Open Filing | Nov 22, 2023 | Nov 20, 2023 | 001-08339 | |
| 4 | Open Document | Open Filing | Aug 22, 2023 | Aug 21, 2023 | 001-08339 | |
| 4 | Open Document | Open Filing | May 23, 2023 | May 20, 2023 | 001-08339 | |
| 4 | Open Document | Open Filing | Feb 23, 2023 | Feb 21, 2023 | 001-08339 | |
| 4 | Open Document | Open Filing | Jan 30, 2023 | Jan 26, 2023 | 001-08339 | |
| 4 | Open Document | Open Filing | Nov 22, 2022 | Nov 21, 2022 | 001-08339 | |
| 4 | Open Document | Open Filing | Aug 23, 2022 | Aug 20, 2022 | 001-08339 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jun 9, 2022 | Jun 7, 2022 | 000-15386 |
| 4 | Open Document | Open Filing | May 24, 2022 | May 20, 2022 | 001-08339 | |
| 4 | Open Document | Open Filing | Feb 23, 2022 | Feb 21, 2022 | 001-08339 | |
| 4 | Open Document | Open Filing | Jan 31, 2022 | Jan 27, 2022 | 001-08339 | |
| 4 | Open Document | Open Filing | Nov 23, 2021 | Nov 19, 2021 | 001-08339 | |
| 4 | Open Document | Open Filing | Aug 23, 2021 | Aug 20, 2021 | 001-08339 | |
| 4 | Open Document | Open Filing | May 21, 2021 | May 20, 2021 | 001-08339 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 20, 2021 | May 19, 2021 | 000-15386 |
| 4 | Open Document | Open Filing | Mar 12, 2021 | Mar 10, 2021 | 001-08339 | |
| 4 | Open Document | Open Filing | Jan 29, 2021 | Jan 28, 2021 | 001-08339 | |
| 4 | Open Document | Open Filing | Dec 11, 2020 | Dec 10, 2020 | 001-08339 | |
| 4 | Open Document | Open Filing | Sep 11, 2020 | Sep 10, 2020 | 001-08339 | |
| 4 | Open Document | Open Filing | Jun 12, 2020 | Jun 10, 2020 | 001-08339 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 27, 2020 | May 22, 2020 | 000-15386 |
| 4 | Open Document | Open Filing | Mar 12, 2020 | Mar 10, 2020 | 001-08339 | |
| 4 | Open Document | Open Filing | Feb 3, 2020 | Jan 30, 2020 | 001-08339 | |
| 4 | Open Document | Open Filing | Dec 12, 2019 | Dec 10, 2019 | 001-08339 | |
| 4 | Open Document | Open Filing | Sep 12, 2019 | Sep 10, 2019 | 001-08339 | |
| 4 | Open Document | Open Filing | Jun 12, 2019 | Jun 10, 2019 | 001-08339 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jun 3, 2019 | May 30, 2019 | 000-15386 |
| 4 | Open Document | Open Filing | Mar 13, 2019 | Mar 11, 2019 | 001-08339 | |
| 4/A | Open Document | Open Filing | Feb 15, 2019 | Jan 28, 2019 | 001-08339 | |
| 4 | Open Document | Open Filing | Jan 30, 2019 | Jan 28, 2019 | 001-08339 | |
| 4 | Open Document | Open Filing | Dec 11, 2018 | Dec 10, 2018 | 001-08339 | |
| 4 | Open Document | Open Filing | Sep 11, 2018 | Sep 10, 2018 | 001-08339 | |
| 4 | Open Document | Open Filing | Jun 12, 2018 | Jun 11, 2018 | 001-08339 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 22, 2018 | May 18, 2018 | 000-15386 |
| 4 | Open Document | Open Filing | Mar 13, 2018 | Mar 9, 2018 | 001-08339 | |
| 4 | Open Document | Open Filing | Jan 29, 2018 | Jan 25, 2018 | 001-08339 | |
| 4 | Open Document | Open Filing | Dec 13, 2017 | Dec 11, 2017 | 001-08339 | |
| 4 | Open Document | Open Filing | Sep 13, 2017 | Sep 11, 2017 | 001-08339 | |
| 4 | Open Document | Open Filing | Jun 13, 2017 | Jun 10, 2017 | 001-08339 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 25, 2017 | May 24, 2017 | 000-15386 |
| 4 | Open Document | Open Filing | Mar 14, 2017 | Mar 10, 2017 | 001-08339 | |
| 4 | Open Document | Open Filing | Jan 27, 2017 | Jan 26, 2017 | 001-08339 | |
| 4 | Open Document | Open Filing | FORM 4 | Dec 2, 2016 | Dec 1, 2016 | 000-54450 |
| 4 | Open Document | Open Filing | Nov 30, 2016 | Nov 28, 2016 | 001-08339 | |
| 3 | Open Document | Open Filing | Nov 30, 2016 | Nov 28, 2016 | 001-08339 | |
| 4/A | Open Document | Open Filing | FORM 4/A | Aug 30, 2016 | May 18, 2016 | 000-54450 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 1, 2016 | May 27, 2016 | 000-54450 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jun 1, 2016 | May 27, 2016 | 000-15386 |
| 4 | Open Document | Open Filing | FORM 4 | May 20, 2016 | May 18, 2016 | 000-54450 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 29, 2015 | May 27, 2015 | 000-54450 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | May 29, 2015 | May 27, 2015 | 000-54450 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 27, 2015 | May 22, 2015 | 000-15386 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 27, 2014 | May 23, 2014 | 000-15386 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 10, 2014 | Feb 7, 2014 | 000-15386 |
| 3/A | Open Document | Open Filing | FORM 3/A SUBMISSION | Jan 6, 2014 | Dec 23, 2013 | 000-15386 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | Jan 2, 2014 | Dec 23, 2013 | 000-15386 |