| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 04 Jun 2021 | 26 May 2021 | 000-30141 |
| 4 | Open Document | Open Filing | FORM 4 | 07 Aug 2020 | 05 Aug 2020 | 000-30141 |
| 4 | Open Document | Open Filing | FORM 4 | 15 Jun 2020 | 11 Jun 2020 | 000-30141 |
| 4 | Open Document | Open Filing | FORM 4 | 12 Feb 2020 | 11 Feb 2020 | 000-30141 |
| 4 | Open Document | Open Filing | FORM 4 | 26 Dec 2019 | 20 Dec 2019 | 000-30141 |
| 4 | Open Document | Open Filing | FORM 4 | 10 Jun 2019 | 06 Jun 2019 | 000-30141 |
| 4 | Open Document | Open Filing | FORM 4 | 07 Jun 2018 | 05 Jun 2018 | 000-30141 |
| 4 | Open Document | Open Filing | FORM 4 | 05 Jun 2018 | 04 Jun 2018 | 000-30141 |
| 4 | Open Document | Open Filing | FORM 4 | 06 Jun 2017 | 02 Jun 2017 | 000-30141 |
| 4 | Open Document | Open Filing | FORM 4 | 06 Jun 2016 | 02 Jun 2016 | 000-30141 |
| 4 | Open Document | Open Filing | FORM 4 | 05 Jun 2015 | 04 Jun 2015 | 000-30141 |
| 4 | Open Document | Open Filing | FORM 4 | 09 Jun 2014 | 05 Jun 2014 | 000-30141 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 07 Jun 2013 | 06 Jun 2013 | 000-30141 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 08 Jun 2012 | 07 Jun 2012 | 000-30141 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 26 Apr 2012 | 17 May 2011 | 000-30141 |