| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 10 May 2021 | 06 May 2021 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 05 May 2021 | 03 May 2021 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 02 Feb 2021 | 01 Feb 2021 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 04 Nov 2020 | 02 Nov 2020 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 05 Aug 2020 | 03 Aug 2020 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 05 May 2020 | 01 May 2020 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 01 May 2020 | 29 Apr 2020 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 05 Feb 2020 | 03 Feb 2020 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 05 Nov 2019 | 01 Nov 2019 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 05 Aug 2019 | 01 Aug 2019 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 06 May 2019 | 01 May 2019 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 05 Nov 2018 | 01 Nov 2018 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 03 Aug 2018 | 01 Aug 2018 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 07 May 2018 | 03 May 2018 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 03 May 2018 | 01 May 2018 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 05 Feb 2018 | 01 Feb 2018 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 03 Nov 2017 | 01 Nov 2017 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 04 Oct 2017 | 02 Oct 2017 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 13 Sep 2017 | 12 Sep 2017 | 000-17781 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 06 Sep 2017 | 01 Sep 2017 | 000-17781 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 03 Aug 2017 | 01 Aug 2017 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 06 Jul 2017 | 03 Jul 2017 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 13 Jun 2017 | 09 Jun 2017 | 000-17781 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 05 Jun 2017 | 01 Jun 2017 | 000-17781 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 24 May 2017 | 22 May 2017 | 000-17781 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 22 May 2017 | 19 May 2017 | 000-17781 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 08 May 2017 | 04 May 2017 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 03 May 2017 | 01 May 2017 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 05 Apr 2017 | 03 Apr 2017 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 02 Mar 2017 | 01 Mar 2017 | 000-17781 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 13 Feb 2017 | 10 Feb 2017 | 000-17781 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 10 Feb 2017 | 31 Jan 2017 | 000-17781 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 03 Feb 2017 | 01 Feb 2017 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 05 Jan 2017 | 03 Jan 2017 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 03 Nov 2016 | 01 Nov 2016 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 04 Oct 2016 | 01 Oct 2016 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 03 Aug 2016 | 01 Aug 2016 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 06 Jul 2016 | 01 Jul 2016 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 04 May 2016 | 02 May 2016 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 25 Apr 2016 | 21 Apr 2016 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 05 Apr 2016 | 01 Apr 2016 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 03 Feb 2016 | 01 Feb 2016 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 06 Jan 2016 | 04 Jan 2016 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 04 Nov 2015 | 02 Nov 2015 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 05 Oct 2015 | 01 Oct 2015 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 05 Aug 2015 | 03 Aug 2015 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 06 Jul 2015 | 01 Jul 2015 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 05 May 2015 | 01 May 2015 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 24 Apr 2015 | 22 Apr 2015 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 03 Apr 2015 | 01 Apr 2015 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 04 Feb 2015 | 02 Feb 2015 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 06 Jan 2015 | 02 Jan 2015 | 001-06024 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 10 Oct 2014 | 08 Oct 2014 | 001-06024 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 10 Oct 2014 | 08 Oct 2014 | 001-06024 |