| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 31 Mar 2022 | 31 Mar 2022 | 001-05975 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 24 Mar 2022 | 22 Mar 2022 | 001-05975 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 01 Mar 2022 | 25 Feb 2022 | 001-05975 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 17 Dec 2021 | 15 Dec 2021 | 001-05975 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Mar 2021 | 25 Mar 2021 | 001-05975 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Feb 2021 | 19 Feb 2021 | 001-05975 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Dec 2020 | 15 Dec 2020 | 001-05975 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Nov 2020 | 05 Nov 2020 | 001-05975 |
| 144 | Open Document | Open Filing | FORM 144 CHZ 11/04/2020 | 05 Nov 2020 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Mar 2020 | 26 Mar 2020 | 001-05975 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Mar 2020 | 13 Mar 2020 | 001-05975 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Mar 2020 | 08 Mar 2020 | 001-05975 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Feb 2020 | 24 Feb 2020 | 001-05975 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Dec 2019 | 15 Dec 2019 | 001-05975 |
| 144 | Open Document | Open Filing | FORM 144 CHZ 12/06/2019 | 06 Dec 2019 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Mar 2019 | 22 Mar 2019 | 001-05975 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Mar 2019 | 25 Feb 2019 | 001-05975 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 Dec 2018 | 15 Dec 2018 | 001-05975 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Aug 2018 | 03 Aug 2018 | 001-05975 |
| 144 | Open Document | Open Filing | FORM 144 CHZ 08/03/2018 | 03 Aug 2018 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Jun 2018 | 13 Jun 2018 | 001-05975 |
| 144 | Open Document | Open Filing | FORM 144 CHZ 06/13/2018 | 13 Jun 2018 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Mar 2018 | 21 Mar 2018 | 001-05975 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Mar 2018 | 09 Mar 2018 | 001-05975 |
| 144 | Open Document | Open Filing | FORM 144 CHZ 03/09/2018 | 09 Mar 2018 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Feb 2018 | 24 Feb 2018 | 001-05975 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 Feb 2018 | 19 Feb 2018 | 001-05975 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Dec 2017 | 15 Dec 2017 | 001-05975 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Mar 2017 | 21 Mar 2017 | 001-05975 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Mar 2017 | 08 Mar 2017 | 001-05975 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Mar 2017 | 03 Mar 2017 | 001-05975 |
| 144 | Open Document | Open Filing | CHZ FORM 144 03-03-2017 | 03 Mar 2017 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Feb 2017 | 18 Feb 2017 | 001-05975 |
| 144 | Open Document | Open Filing | FORM 144 | 21 Feb 2017 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Dec 2016 | 15 Dec 2016 | 001-05975 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Mar 2016 | 14 Mar 2016 | 001-05975 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Feb 2016 | 18 Feb 2016 | 001-05975 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Dec 2015 | 13 Dec 2015 | 001-05975 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Mar 2015 | 26 Mar 2015 | 001-05975 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 Feb 2015 | 23 Feb 2015 | 001-05975 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Dec 2014 | 11 Dec 2014 | 001-05975 |