| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Apr 5, 2023 | Mar 10, 2023 | 001-14007 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 18, 2022 | Nov 16, 2022 | 001-14007 |
| 4 | Open Document | Open Filing | FORM 4 | Apr 6, 2022 | Apr 4, 2022 | 001-14007 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 11, 2022 | Mar 10, 2022 | 001-14007 |
| SC 13D/A | Open Document | Open Filing | SCHEDULE 13D/A | Jul 29, 2021 | ||
| 4 | Open Document | Open Filing | FORM 4 | Jul 29, 2021 | Jul 27, 2021 | 000-30407 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 28, 2021 | Jun 24, 2021 | 000-30407 |
| 4 | Open Document | Open Filing | FORM 4 | May 4, 2021 | Apr 30, 2021 | 000-30407 |
| 4 | Open Document | Open Filing | FORM 4 | May 15, 2020 | May 13, 2020 | 000-30407 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 2, 2020 | Jan 2, 2020 | 000-30407 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 16, 2019 | Sep 12, 2019 | 000-30407 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 6, 2019 | Jun 5, 2019 | 000-30407 |
| 4 | Open Document | Open Filing | FORM 4 | May 29, 2019 | May 17, 2019 | 000-30407 |
| 4 | Open Document | Open Filing | FORM 4 | Apr 29, 2019 | Apr 25, 2019 | 000-30407 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 16, 2018 | Nov 15, 2018 | 000-30407 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 24, 2018 | Aug 23, 2018 | 000-30407 |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | Aug 24, 2018 | ||
| SC 13D/A | Open Document | Open Filing | SC 13D/A | Jun 12, 2018 | ||
| 4 | Open Document | Open Filing | FORM 4 | Jun 12, 2018 | Jun 8, 2018 | 000-30407 |
| 4 | Open Document | Open Filing | FORM 4 | May 21, 2018 | May 17, 2018 | 000-30407 |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | Jan 25, 2018 | ||
| 4 | Open Document | Open Filing | FORM 4 | Nov 13, 2017 | Nov 9, 2017 | 000-30407 |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | Aug 29, 2017 | ||
| 4 | Open Document | Open Filing | FORM 4 | Aug 25, 2017 | Aug 23, 2017 | 000-30407 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 9, 2017 | Jun 8, 2017 | 000-30407 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 5, 2017 | May 30, 2017 | 000-30407 |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | Jun 5, 2017 | ||
| 4 | Open Document | Open Filing | FORM 4 | Mar 9, 2017 | Mar 7, 2017 | 000-30407 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 27, 2017 | Feb 23, 2017 | 000-30407 |
| SC 13D | Open Document | Open Filing | SC 13D | Feb 14, 2017 | ||
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 7, 2016 | Mar 3, 2016 | 000-30407 |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | Feb 10, 2016 | ||
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Dec 16, 2015 | Dec 15, 2015 | 000-30407 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Aug 31, 2015 | Aug 18, 2015 | 000-30407 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 18, 2015 | Mar 5, 2015 | 000-30407 |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | Feb 2, 2015 | ||
| 4 | Open Document | Open Filing | Dec 23, 2014 | Dec 22, 2014 | 000-30407 | |
| 4 | Open Document | Open Filing | Mar 7, 2014 | Mar 6, 2014 | 000-30407 | |
| 4 | Open Document | Open Filing | Feb 24, 2014 | Feb 19, 2014 | 000-30407 | |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | Feb 7, 2014 |