| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | Apr 1, 2025 | Apr 1, 2025 | 000-14942 | |
| 4 | Open Document | Open Filing | Mar 31, 2025 | Mar 28, 2025 | 000-14942 | |
| 4 | Open Document | Open Filing | Mar 27, 2025 | Mar 26, 2025 | 000-14942 | |
| SCHEDULE 13D/A | Open Document | Open Filing | Mar 27, 2025 | |||
| 4 | Open Document | Open Filing | Mar 25, 2025 | Mar 24, 2025 | 000-14942 | |
| 4 | Open Document | Open Filing | Mar 21, 2025 | Mar 19, 2025 | 000-14942 | |
| 4 | Open Document | Open Filing | Mar 17, 2025 | Mar 14, 2025 | 000-14942 | |
| 144 | Open Document | Open Filing | Mar 14, 2025 | |||
| 4 | Open Document | Open Filing | Mar 11, 2025 | Mar 10, 2025 | 000-14942 | |
| 144 | Open Document | Open Filing | Mar 11, 2025 | |||
| 4 | Open Document | Open Filing | Feb 3, 2025 | Jan 30, 2025 | 000-14942 | |
| SCHEDULE 13D/A | Open Document | Open Filing | Jan 29, 2025 | |||
| 4 | Open Document | Open Filing | Jan 28, 2025 | Jan 27, 2025 | 000-14942 | |
| 144 | Open Document | Open Filing | Jan 28, 2025 | |||
| 4 | Open Document | Open Filing | Jan 24, 2025 | Jan 23, 2025 | 000-14942 | |
| 4 | Open Document | Open Filing | Jan 22, 2025 | Jan 21, 2025 | 000-14942 | |
| 144 | Open Document | Open Filing | Jan 21, 2025 | |||
| 4 | Open Document | Open Filing | Jan 17, 2025 | Jan 16, 2025 | 000-14942 | |
| 144 | Open Document | Open Filing | Jan 17, 2025 | |||
| 4 | Open Document | Open Filing | Jan 15, 2025 | Jan 14, 2025 | 000-14942 | |
| 4 | Open Document | Open Filing | Jan 14, 2025 | Jan 10, 2025 | 000-14942 | |
| 144 | Open Document | Open Filing | Jan 10, 2025 | |||
| SC 13D/A | Open Document | Open Filing | AMENDMENT NO. 3 TO SCHEDULE 13D | Sep 27, 2022 | ||
| 3 | Open Document | Open Filing | Sep 17, 2021 | Sep 10, 2021 | 000-14942 | |
| SC 13D/A | Open Document | Open Filing | SCHEDULE 13D/A | Jan 8, 2021 | ||
| SC 13D/A | Open Document | Open Filing | SC 13D/A | Nov 25, 2020 | ||
| 4 | Open Document | Open Filing | Nov 23, 2020 | Nov 23, 2020 | 000-14942 | |
| 4 | Open Document | Open Filing | Nov 20, 2020 | Nov 20, 2020 | 000-14942 | |
| 4 | Open Document | Open Filing | Nov 17, 2020 | Nov 16, 2020 | 000-14942 | |
| 4 | Open Document | Open Filing | Nov 12, 2020 | Nov 10, 2020 | 000-14942 | |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | Oct 6, 2020 | ||
| SC 13D/A | Open Document | Open Filing | SC 13D/A | Jun 22, 2020 | ||
| SC 13D/A | Open Document | Open Filing | SC 13D/A | Mar 31, 2020 | ||
| 4 | Open Document | Open Filing | May 13, 2019 | May 9, 2019 | 000-14942 | |
| 4 | Open Document | Open Filing | May 8, 2019 | May 8, 2019 | 000-14942 | |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | May 3, 2019 | ||
| 4 | Open Document | Open Filing | Apr 30, 2019 | Apr 29, 2019 | 000-14942 | |
| 4 | Open Document | Open Filing | Apr 26, 2019 | Apr 25, 2019 | 000-14942 | |
| 4 | Open Document | Open Filing | Apr 24, 2019 | Apr 23, 2019 | 000-14942 | |
| 4 | Open Document | Open Filing | Apr 18, 2019 | Apr 16, 2019 | 000-14942 | |
| 4 | Open Document | Open Filing | Feb 20, 2019 | Feb 19, 2019 | 000-14942 | |
| 4 | Open Document | Open Filing | Feb 13, 2019 | Feb 13, 2019 | 000-14942 | |
| 4 | Open Document | Open Filing | Feb 12, 2019 | Feb 11, 2019 | 000-14942 | |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | Dec 7, 2018 | ||
| SC 13D/A | Open Document | Open Filing | SC 13D/A | Dec 4, 2018 | ||
| 4 | Open Document | Open Filing | Dec 4, 2018 | Dec 3, 2018 | 000-14942 | |
| 4 | Open Document | Open Filing | Dec 3, 2018 | Nov 30, 2018 | 000-14942 | |
| 4 | Open Document | Open Filing | Nov 30, 2018 | Nov 29, 2018 | 000-14942 | |
| 4 | Open Document | Open Filing | Nov 28, 2018 | Nov 27, 2018 | 000-14942 | |
| 4 | Open Document | Open Filing | Nov 26, 2018 | Nov 26, 2018 | 000-14942 | |
| 4 | Open Document | Open Filing | Nov 19, 2018 | Nov 16, 2018 | 000-14942 | |
| SC 13D/A | Open Document | Open Filing | SCHEDULE 13D/A | Apr 11, 2017 | ||
| SC 13D | Open Document | Open Filing | SC 13D | Nov 8, 2016 | ||
| SC 13D | Open Document | Open Filing | SCHEDULE 13D | Aug 9, 2016 | ||
| SC 13D/A | Open Document | Open Filing | SC 13D/A | Mar 9, 2016 | ||
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 2, 2016 | Jan 19, 2016 | 000-14942 |
| SC 13G/A | Open Document | Open Filing | AMENDMENT TO SCHEDULE 13G | Feb 11, 2016 | ||
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jan 15, 2016 | Jan 15, 2016 | 000-14942 |
| SC 13G | Open Document | Open Filing | FORM SC 13G | Oct 14, 2015 | ||
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Sep 4, 2015 | Aug 24, 2015 | 000-14942 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Aug 21, 2015 | Jul 28, 2015 | 000-14942 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jul 21, 2015 | Jun 22, 2015 | 000-14942 |
| SC 13D/A | Open Document | Open Filing | SCHEDULE 13D/A | Jun 1, 2015 | ||
| SC 13D/A | Open Document | Open Filing | FORM SC 13D/A | May 8, 2014 | ||
| SC 13D | Open Document | Open Filing | FORM SC 13D | Apr 3, 2014 | ||
| SC 13D/A | Open Document | Open Filing | SC 13D/A | Mar 25, 2014 |