| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 02 Jul 2021 | 01 Jul 2021 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 01 Apr 2021 | 01 Apr 2021 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 02 Mar 2021 | 01 Mar 2021 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 08 Jan 2021 | 07 Jan 2021 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 05 Oct 2020 | 01 Oct 2020 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 08 Jul 2020 | 02 Jul 2020 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 19 Mar 2020 | 12 Mar 2020 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 10 Mar 2020 | 05 Mar 2020 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 13 Jan 2020 | 09 Jan 2020 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 11 Oct 2019 | 11 Oct 2019 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 29 May 2019 | 24 May 2019 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 09 Apr 2019 | 08 Apr 2019 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 08 Jan 2019 | 07 Jan 2019 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 12 Oct 2018 | 10 Oct 2018 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 29 May 2018 | 24 May 2018 | 000-17196 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 May 2018 | 18 May 2018 | 001-04717 |
| 4 | Open Document | Open Filing | FORM 4 | 04 May 2018 | 04 May 2018 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 21 Mar 2018 | 20 Mar 2018 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 12 Jan 2018 | 11 Jan 2018 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 05 Oct 2017 | 03 Oct 2017 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 15 Jun 2017 | 13 Jun 2017 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 06 Jun 2017 | 02 Jun 2017 | 000-17196 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 May 2017 | 05 May 2017 | 001-04717 |
| 4 | Open Document | Open Filing | FORM 4 | 16 Mar 2017 | 14 Mar 2017 | 000-17196 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Feb 2017 | 27 Jan 2017 | 000-04887 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 31 Jan 2017 | 06 Dec 2016 | 000-04887 |
| 4 | Open Document | Open Filing | FORM 4 | 23 Jan 2017 | 19 Jan 2017 | 000-17196 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Dec 2016 | 02 Dec 2016 | 001-04717 |
| 4 | Open Document | Open Filing | FORM 4 | 07 Dec 2016 | 02 Dec 2016 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 27 Oct 2016 | 25 Oct 2016 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 20 Jun 2016 | 16 Jun 2016 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 24 May 2016 | 20 May 2016 | 000-17196 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 May 2016 | 06 May 2016 | 001-04717 |
| 4 | Open Document | Open Filing | FORM 4 | 01 Mar 2016 | 26 Feb 2016 | 000-17196 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Feb 2016 | 29 Jan 2016 | 000-04887 |
| 4 | Open Document | Open Filing | FORM 4 | 08 Jan 2016 | 06 Jan 2016 | 000-17196 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Dec 2015 | 18 Nov 2015 | 001-04717 |
| 4 | Open Document | Open Filing | FORM 4 | 05 Oct 2015 | 01 Oct 2015 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 30 Jun 2015 | 26 Jun 2015 | 000-17196 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 May 2015 | 08 May 2015 | 001-04717 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Feb 2015 | 30 Jan 2015 | 000-04887 |
| 4 | Open Document | Open Filing | FORM 4 | 06 Jan 2015 | 16 Dec 2014 | 000-17196 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Dec 2014 | 03 Dec 2014 | 001-04717 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 04 Jun 2014 | 03 Jun 2014 | 000-17196 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 29 May 2014 | 27 May 2014 | 000-17196 |
| 3 | Open Document | Open Filing | INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES | 28 May 2014 | 22 May 2014 | 000-17196 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 May 2014 | 01 May 2014 | 001-04717 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Feb 2014 | 31 Jan 2014 | 000-04887 |