| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 02 Jun 2022 | 01 Jun 2022 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 05 May 2022 | 04 May 2022 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 04 May 2022 | 02 May 2022 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 06 Apr 2022 | 05 Apr 2022 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 05 Apr 2022 | 04 Apr 2022 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 28 Feb 2022 | 25 Feb 2022 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 14 Feb 2022 | 10 Feb 2022 | 000-17196 |
| 5 | Open Document | Open Filing | FORM 5 | 20 Jan 2022 | 31 Dec 2021 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 08 Mar 2021 | 05 Mar 2021 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 12 Feb 2021 | 11 Feb 2021 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 10 Mar 2020 | 14 Feb 2020 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 04 Mar 2020 | 12 Feb 2020 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 06 Mar 2019 | 04 Mar 2019 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 27 Feb 2019 | 25 Feb 2019 | 000-17196 |
| 5 | Open Document | Open Filing | FORM 5 | 22 Feb 2019 | 31 Dec 2018 | 000-17196 |
| 4/A | Open Document | Open Filing | FORM 4/A | 22 Feb 2019 | 22 Jan 2019 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 22 Feb 2019 | 20 Feb 2019 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 24 Jan 2019 | 22 Jan 2019 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 08 Jun 2018 | 07 Jun 2018 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 16 May 2018 | 11 May 2018 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 08 Mar 2018 | 06 Mar 2018 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 07 Mar 2018 | 06 Mar 2018 | 000-17196 |
| 5 | Open Document | Open Filing | FORM 5 | 28 Feb 2018 | 31 Dec 2017 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 29 Nov 2017 | 28 Nov 2017 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 13 Apr 2017 | 03 Oct 2014 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 21 Mar 2017 | 17 Mar 2017 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 02 Mar 2017 | 28 Feb 2017 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 24 Feb 2017 | 15 Feb 2017 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 20 Sep 2016 | 16 Sep 2016 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 26 Aug 2016 | 24 Aug 2016 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 19 Feb 2016 | 17 Feb 2016 | 000-17196 |
| 5 | Open Document | Open Filing | FORM 5 | 12 Feb 2016 | 31 Dec 2015 | 000-17196 |
| 4 | Open Document | Open Filing | FORM 4 | 13 Mar 2015 | 11 Mar 2015 | 000-17196 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 12 Jun 2014 | 10 Jun 2014 | 000-17196 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 27 Jan 2014 | 23 Jan 2014 | 000-17196 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Jul 2013 | 30 Jun 2013 | 000-17196 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Mar 2013 | 01 Mar 2012 | 000-17196 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Dec 2012 | 01 Mar 2012 | 000-17196 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Mar 2012 | 01 Mar 2012 | 000-17196 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Feb 2012 | 31 Dec 2011 | 000-17196 |