| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 May 2021 | 12 May 2021 | 000-27548 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Nov 2020 | 12 Nov 2020 | 000-27548 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Jan 2020 | 14 Nov 2019 | 000-27548 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Jun 2019 | 05 Jun 2019 | 000-27548 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Nov 2018 | 15 Nov 2018 | 000-27548 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 Dec 2017 | 27 Dec 2017 | 000-27548 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Oct 2017 | 26 Oct 2017 | 000-27548 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 Dec 2016 | 21 Dec 2016 | 000-27548 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Nov 2016 | 27 Oct 2016 | 000-27548 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 02 Sep 2016 | 31 Aug 2016 | 001-09753 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Oct 2015 | 30 Oct 2015 | 000-27548 |
| 4 | Open Document | Open Filing | 4 | 19 May 2015 | 19 May 2015 | 001-09753 |
| 4 | Open Document | Open Filing | 10/30/2014 RSU GRANT | 03 Nov 2014 | 30 Oct 2014 | 000-27548 |
| 4 | Open Document | Open Filing | 4 | 20 May 2014 | 20 May 2014 | 001-09753 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 13 Mar 2014 | 12 Mar 2014 | 001-01687 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 19 Feb 2014 | 16 Feb 2014 | 001-01687 |