| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 15 Dec 2021 | 15 Dec 2021 | 001-09977 |
| 4 | Open Document | Open Filing | FORM 4 | 29 Oct 2021 | 29 Oct 2021 | 001-09977 |
| 4 | Open Document | Open Filing | FORM 4 | 03 Mar 2021 | 01 Mar 2021 | 001-09977 |
| 4 | Open Document | Open Filing | FORM 4 | 19 Aug 2020 | 17 Aug 2020 | 001-09977 |
| 4 | Open Document | Open Filing | FORM 4 | 28 Jul 2020 | 27 Jul 2020 | 001-09977 |
| 4 | Open Document | Open Filing | FORM 4 | 25 Feb 2020 | 21 Feb 2020 | 001-09977 |
| 4 | Open Document | Open Filing | FORM 4 | 19 Feb 2020 | 14 Feb 2020 | 001-09977 |
| 4 | Open Document | Open Filing | FORM 4 | 31 Jul 2019 | 29 Jul 2019 | 001-09977 |
| 4 | Open Document | Open Filing | FORM 4 | 22 Mar 2019 | 20 Mar 2019 | 001-09977 |
| 4 | Open Document | Open Filing | FORM 4 | 06 Mar 2019 | 04 Mar 2019 | 001-09977 |
| 4 | Open Document | Open Filing | FORM 4 | 05 Feb 2019 | 04 Feb 2019 | 001-09977 |
| 4 | Open Document | Open Filing | FORM 4 | 30 May 2018 | 29 May 2018 | 001-09977 |
| 4 | Open Document | Open Filing | FORM 4 | 23 Mar 2018 | 22 Mar 2018 | 001-09977 |
| 4 | Open Document | Open Filing | FORM 4 | 14 Feb 2018 | 12 Feb 2018 | 001-09977 |
| 4 | Open Document | Open Filing | FORM 4 | 16 May 2017 | 15 May 2017 | 001-09977 |
| 4 | Open Document | Open Filing | FORM 4 | 11 May 2017 | 09 May 2017 | 001-09977 |
| 4 | Open Document | Open Filing | FORM 4 | 15 Feb 2017 | 13 Feb 2017 | 001-09977 |
| 4 | Open Document | Open Filing | FORM 4 | 08 Mar 2016 | 04 Mar 2016 | 001-09977 |
| 4 | Open Document | Open Filing | FORM 4 | 18 Feb 2016 | 16 Feb 2016 | 001-09977 |
| 4 | Open Document | Open Filing | FORM 4 | 12 Feb 2015 | 11 Feb 2015 | 001-09977 |
| 4 | Open Document | Open Filing | FORM 4 | 10 Feb 2015 | 10 Feb 2015 | 001-09977 |
| 4/A | Open Document | Open Filing | FORM 4/A | 02 Apr 2014 | 12 Feb 2014 | 001-09977 |
| 4 | Open Document | Open Filing | FORM 4 | 28 Feb 2014 | 26 Feb 2014 | 001-09977 |
| 4 | Open Document | Open Filing | FORM 4 | 14 Feb 2014 | 12 Feb 2014 | 001-09977 |
| 4 | Open Document | Open Filing | FORM 4 | 12 Feb 2014 | 10 Feb 2014 | 001-09977 |
| 4 | Open Document | Open Filing | FORM 4 | 29 Apr 2013 | 26 Apr 2013 | 001-09977 |
| 4 | Open Document | Open Filing | FORM 4 | 21 Feb 2013 | 19 Feb 2013 | 001-09977 |
| 4 | Open Document | Open Filing | FORM 4 | 15 Feb 2013 | 13 Feb 2013 | 001-09977 |
| 4/A | Open Document | Open Filing | FORM 4/A SUBMISSION | 12 Jun 2012 | 10 Feb 2012 | 001-09977 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 15 Feb 2012 | 14 Feb 2012 | 001-09977 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 13 Feb 2012 | 10 Feb 2012 | 001-09977 |