| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 20 Dec 2022 | 19 Dec 2022 | 001-34855 |
| 4 | Open Document | Open Filing | FORM 4 | 17 Dec 2021 | 13 Dec 2021 | 001-15409 |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 17 Dec 2021 | ||
| 4 | Open Document | Open Filing | FORM 4 | 15 Dec 2021 | 14 Dec 2021 | 001-34855 |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 31 Dec 2020 | ||
| 4 | Open Document | Open Filing | FORM 4 | 17 Dec 2020 | 17 Dec 2020 | 001-15409 |
| 4 | Open Document | Open Filing | 04 Dec 2020 | 04 Dec 2020 | 001-34855 | |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 21 Aug 2020 | ||
| 4 | Open Document | Open Filing | FORM 4 | 12 Aug 2020 | 12 Aug 2020 | 001-15409 |
| 4 | Open Document | Open Filing | 16 Dec 2019 | 12 Dec 2019 | 001-34855 | |
| 4 | Open Document | Open Filing | 02 Jan 2019 | 28 Dec 2018 | 001-34855 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 13 Dec 2017 | 12 Dec 2017 | 001-34855 |
| 4 | Open Document | Open Filing | FORM 4 | 29 Aug 2017 | 29 Aug 2017 | 001-34855 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 08 Mar 2017 | 07 Mar 2017 | 001-34855 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 21 Dec 2016 | 21 Dec 2016 | 001-34855 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 21 Dec 2015 | 21 Dec 2015 | 001-34855 |
| SC 13D/A | Open Document | Open Filing | 20 Nov 2015 | |||
| 4 | Open Document | Open Filing | 20 Nov 2015 | 20 Nov 2015 | 001-15409 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 13 Nov 2015 | 12 Nov 2015 | 001-34855 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 28 May 2015 | 28 May 2015 | 001-34855 |
| 4 | Open Document | Open Filing | 11 May 2015 | 07 May 2015 | 001-34855 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 10 Dec 2014 | 09 Dec 2014 | 001-34855 |
| 4 | Open Document | Open Filing | 27 Oct 2014 | 27 Oct 2014 | 001-34855 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 05 Feb 2014 | 22 May 2013 | 001-15409 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 03 Feb 2014 | 31 Jan 2014 | 001-34855 |