| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | Mar 22, 2022 | Mar 18, 2022 | 000-20202 | |
| 4 | Open Document | Open Filing | Mar 18, 2022 | Mar 16, 2022 | 000-20202 | |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | Feb 14, 2022 | ||
| 3 | Open Document | Open Filing | Feb 10, 2022 | Jan 31, 2022 | 000-20202 | |
| 4 | Open Document | Open Filing | Nov 4, 2021 | Nov 2, 2021 | 000-20202 | |
| 3 | Open Document | Open Filing | Nov 4, 2021 | Nov 1, 2021 | 000-20202 | |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | Feb 12, 2021 | ||
| SC 13G/A | Open Document | Open Filing | SC 13G/A | Feb 12, 2021 | ||
| 4/A | Open Document | Open Filing | Jul 31, 2020 | Jul 31, 2020 | 000-20202 | |
| 4 | Open Document | Open Filing | Jul 24, 2020 | Jul 22, 2020 | 000-20202 | |
| 4 | Open Document | Open Filing | Jul 15, 2020 | Jul 13, 2020 | 000-20202 | |
| 4 | Open Document | Open Filing | Jul 10, 2020 | Jul 8, 2020 | 000-20202 | |
| 4 | Open Document | Open Filing | Jun 5, 2020 | Jun 3, 2020 | 000-20202 | |
| 4 | Open Document | Open Filing | May 28, 2020 | May 26, 2020 | 000-20202 | |
| 4 | Open Document | Open Filing | May 12, 2020 | May 8, 2020 | 000-20202 | |
| 4 | Open Document | Open Filing | Apr 30, 2020 | Apr 28, 2020 | 000-20202 | |
| 4 | Open Document | Open Filing | Apr 9, 2020 | Apr 7, 2020 | 000-20202 | |
| 4 | Open Document | Open Filing | Apr 6, 2020 | Apr 2, 2020 | 000-20202 | |
| 4 | Open Document | Open Filing | Mar 26, 2020 | Mar 24, 2020 | 000-20202 | |
| 4 | Open Document | Open Filing | Mar 23, 2020 | Mar 19, 2020 | 000-20202 | |
| 4 | Open Document | Open Filing | Mar 12, 2020 | Mar 10, 2020 | 000-20202 | |
| SC 13G | Open Document | Open Filing | SC 13G | Mar 9, 2020 | ||
| 4 | Open Document | Open Filing | Mar 6, 2020 | Mar 4, 2020 | 000-20202 | |
| 4 | Open Document | Open Filing | Mar 3, 2020 | Feb 28, 2020 | 000-20202 | |
| SC 13G/A | Open Document | Open Filing | SCHEDULE 13G/A | Feb 13, 2019 | ||
| 4 | Open Document | Open Filing | May 24, 2018 | May 23, 2018 | 000-20202 | |
| 4 | Open Document | Open Filing | May 15, 2018 | May 11, 2018 | 000-20202 | |
| 4 | Open Document | Open Filing | May 8, 2018 | May 4, 2018 | 000-20202 | |
| 4 | Open Document | Open Filing | May 2, 2018 | Apr 30, 2018 | 000-20202 | |
| 4 | Open Document | Open Filing | Apr 26, 2018 | Apr 24, 2018 | 000-20202 | |
| 4 | Open Document | Open Filing | Apr 10, 2018 | Apr 6, 2018 | 000-20202 | |
| 4 | Open Document | Open Filing | Apr 5, 2018 | Apr 3, 2018 | 000-20202 | |
| 4 | Open Document | Open Filing | Mar 27, 2018 | Mar 23, 2018 | 000-20202 | |
| 4 | Open Document | Open Filing | Mar 22, 2018 | Mar 20, 2018 | 000-20202 | |
| 4 | Open Document | Open Filing | Mar 15, 2018 | Mar 13, 2018 | 000-20202 | |
| 4 | Open Document | Open Filing | Mar 8, 2018 | Mar 6, 2018 | 000-20202 | |
| 4 | Open Document | Open Filing | Mar 5, 2018 | Mar 1, 2018 | 000-20202 | |
| 4 | Open Document | Open Filing | Feb 27, 2018 | Feb 23, 2018 | 000-20202 | |
| 4 | Open Document | Open Filing | Feb 16, 2018 | Feb 16, 2018 | 000-20202 | |
| SC 13G/A | Open Document | Open Filing | SCHEDULE 13G/A | Feb 14, 2018 | ||
| 4 | Open Document | Open Filing | Feb 14, 2018 | Feb 13, 2018 | 000-20202 | |
| 4 | Open Document | Open Filing | Feb 8, 2018 | Feb 6, 2018 | 000-20202 | |
| 4 | Open Document | Open Filing | Feb 5, 2018 | Feb 1, 2018 | 000-20202 | |
| 4 | Open Document | Open Filing | Jan 31, 2018 | Jan 29, 2018 | 000-20202 | |
| 4 | Open Document | Open Filing | Jan 25, 2018 | Jan 23, 2018 | 000-20202 | |
| 4 | Open Document | Open Filing | Jan 19, 2018 | Jan 17, 2018 | 000-20202 | |
| 4 | Open Document | Open Filing | Jan 12, 2018 | Jan 10, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Jan 8, 2018 | Jan 4, 2018 | 000-20202 | |
| 4 | Open Document | Open Filing | Dec 28, 2017 | Dec 26, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Dec 22, 2017 | Dec 20, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Dec 19, 2017 | Dec 15, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Dec 13, 2017 | Dec 11, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Dec 6, 2017 | Dec 4, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Nov 30, 2017 | Nov 28, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Nov 22, 2017 | Nov 20, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Nov 13, 2017 | Nov 9, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Nov 6, 2017 | Nov 2, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Oct 30, 2017 | Oct 26, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Oct 24, 2017 | Oct 20, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Oct 4, 2017 | Oct 2, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Oct 2, 2017 | Sep 28, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Sep 25, 2017 | Sep 21, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Sep 21, 2017 | Sep 19, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Sep 19, 2017 | Sep 15, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Sep 13, 2017 | Sep 11, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Sep 6, 2017 | Sep 1, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Aug 31, 2017 | Aug 29, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Aug 24, 2017 | Aug 22, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Aug 21, 2017 | Aug 17, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Aug 16, 2017 | Aug 14, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Aug 14, 2017 | Aug 10, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Aug 9, 2017 | Aug 7, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Aug 3, 2017 | Aug 1, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Jul 25, 2017 | Jul 21, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Jul 21, 2017 | Jul 19, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Jul 17, 2017 | Jul 13, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Jul 12, 2017 | Jul 10, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Jul 10, 2017 | Jul 6, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Jun 28, 2017 | Jun 26, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Jun 23, 2017 | Jun 21, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Jun 20, 2017 | Jun 16, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Jun 15, 2017 | Jun 13, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Jun 13, 2017 | Jun 9, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Jun 9, 2017 | Jun 7, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Jun 5, 2017 | Jun 1, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Jun 1, 2017 | May 30, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | May 26, 2017 | May 24, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Apr 26, 2017 | Apr 24, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Apr 4, 2017 | Mar 31, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Mar 30, 2017 | Mar 28, 2017 | 000-20202 | |
| 4/A | Open Document | Open Filing | Mar 24, 2017 | Mar 17, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | Mar 21, 2017 | Mar 17, 2017 | 000-20202 | |
| SC 13G/A | Open Document | Open Filing | SCHEDULE 13G (AMENDMENT NO. 18) | Feb 10, 2017 | ||
| 4 | Open Document | Open Filing | Feb 9, 2017 | Feb 7, 2017 | 000-20202 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jan 4, 2017 | Dec 30, 2016 | 000-20202 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Dec 28, 2016 | Dec 27, 2016 | 000-20202 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jul 20, 2016 | Jun 23, 2016 | 000-20202 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 11, 2016 | Mar 9, 2016 | 000-20202 |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | Feb 12, 2016 | ||
| SC 13G/A | Open Document | Open Filing | SC 13G/A | Feb 17, 2015 | ||
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Nov 5, 2014 | Oct 31, 2014 | 000-20202 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Oct 27, 2014 | Oct 23, 2014 | 000-20202 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jul 7, 2014 | Jun 26, 2014 | 000-20202 |
| SC 13G/A | Open Document | Open Filing | SCHEDULE 13G AMENDMENT 15 | Feb 11, 2014 |