| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 21 Jul 2023 | 21 Jul 2023 | 000-29651 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 19 Jan 2022 | 18 Jan 2022 | 001-39437 |
| 4 | Open Document | Open Filing | FORM 4 | 19 Jan 2021 | 15 Jan 2021 | 001-39437 |
| 4 | Open Document | Open Filing | FORM 4 | 19 Oct 2020 | 13 Oct 2020 | 001-39437 |
| 4 | Open Document | Open Filing | FORM 4 | 19 Aug 2020 | 21 Jul 2020 | 000-29651 |
| 4 | Open Document | Open Filing | FORM 4 | 10 Feb 2020 | 03 Feb 2020 | 000-55447 |
| SC 13D | Open Document | Open Filing | SCHEDULE 13D | 15 Jul 2019 | ||
| 4 | Open Document | Open Filing | FORM 4 | 02 Jul 2019 | 24 Jun 2019 | 000-29651 |
| 4 | Open Document | Open Filing | FORM 4 | 17 Jun 2019 | 13 Jun 2019 | 000-55447 |
| 4 | Open Document | Open Filing | FORM 4 | 30 Apr 2019 | 25 Apr 2019 | 000-55447 |
| 4 | Open Document | Open Filing | 21 Nov 2018 | 19 Nov 2018 | 000-55447 | |
| 4 | Open Document | Open Filing | 19 Nov 2018 | 15 Nov 2018 | 000-55447 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 03 Aug 2017 | 31 Jul 2017 | 000-55447 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 16 Sep 2016 | 15 Sep 2016 | 000-55447 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 09 May 2016 | 05 May 2016 | 000-55447 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 16 Nov 2015 | 13 Nov 2015 | 000-55447 |
| SC 13D | Open Document | Open Filing | FORM SC 13D | 26 Oct 2015 | ||
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 19 Oct 2015 | 15 Oct 2015 | 000-29651 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 10 Sep 2015 | 09 Sep 2015 | 000-55447 |
| 4 | Open Document | Open Filing | FORM 4 | 10 Sep 2014 | 08 Sep 2014 | 333-197099 |
| 3 | Open Document | Open Filing | FORM 3 | 20 Aug 2014 | 20 Aug 2014 | 333-197099 |