| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 6-K | Open Document | Open Filing | 6-K | 27 Oct 2025 | 31 Dec 2025 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 30 Jul 2025 | 30 Sep 2025 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 16 May 2025 | 30 Jun 2025 | 001-15224 |
| NT 20-F | Open Document | Open Filing | NT 20-F | 01 May 2025 | 31 Dec 2024 | 001-15224 |
| 20-F | Open Document | Data | Open Filing | 20-F | 01 May 2025 | 31 Dec 2024 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 07 Mar 2025 | 31 Mar 2025 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 02 Jan 2025 | 31 Mar 2025 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 18 Dec 2024 | 31 Dec 2024 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 14 Nov 2024 | 31 Dec 2024 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 10 Oct 2024 | 31 Dec 2024 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 18 Jul 2024 | 18 Jul 2024 | 001-15224 |
| 20-F | Open Document | Data | Open Filing | 20-F | 30 Apr 2024 | 31 Dec 2023 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 16 Apr 2024 | 30 Jun 2024 | 001-15224 |
| 6-K | Open Document | Open Filing | FORM 6-K | 10 Jan 2024 | 31 Mar 2024 | 001-15224 |
| 6-K | Open Document | Open Filing | FORM 6-K | 01 Dec 2023 | 30 Sep 2023 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 12 Sep 2023 | 30 Sep 2023 | 001-15224 |
| UPLOAD | Open Document | Open Filing | 23 Aug 2023 | |||
| CORRESP | Open Document | Open Filing | 27 Jul 2023 | |||
| 20-F/A | Open Document | Data | Open Filing | 20-F/A | 27 Jul 2023 | 31 Dec 2022 | 001-15224 |
| UPLOAD | Open Document | Open Filing | 14 Jul 2023 | |||
| 6-K | Open Document | Open Filing | 6-K | 12 Jul 2023 | 30 Sep 2023 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 30 May 2023 | 30 Jun 2023 | 001-15224 |
| 20-F | Open Document | Data | Open Filing | 20-F | 16 May 2023 | 31 Dec 2022 | 001-15224 |
| NT 20-F | Open Document | Open Filing | NT 20-F | 28 Apr 2023 | 31 Dec 2022 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 04 Apr 2023 | 30 Jun 2023 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 24 Feb 2023 | 31 Mar 2023 | 001-15224 |
| 6-K | Open Document | Open Filing | FORM 6-K | 27 Dec 2022 | 31 Dec 2022 | 001-15224 |
| 6-K | Open Document | Open Filing | FORM 6-K | 12 Dec 2022 | 31 Dec 2022 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 29 Nov 2022 | 31 Dec 2022 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 25 Oct 2022 | 31 Dec 2022 | 001-15224 |
| 6-K | Open Document | Open Filing | FORM 6-K | 01 Sep 2022 | 30 Jun 2022 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 26 Jul 2022 | 30 Sep 2022 | 001-15224 |
| 6-K | Open Document | Open Filing | FORM 6-K | 22 Jun 2022 | 30 Jun 2022 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 20 May 2022 | 30 Jun 2022 | 001-15224 |
| 20-F | Open Document | Data | Open Filing | FORM 20-F | 17 May 2022 | 31 Dec 2021 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 05 May 2022 | 30 Jun 2022 | 001-15224 |
| SC 13G | Open Document | Open Filing | SC 13G | 03 May 2022 | 005-86009 | |
| NT 20-F | Open Document | Open Filing | NT 20-F | 29 Apr 2022 | 31 Dec 2021 | 001-15224 |
| EFFECT | Open Document | Open Filing | 15 Apr 2022 | 333-263528 | ||
| 6-K | Open Document | Open Filing | FORM 6-K | 18 Mar 2022 | 31 Mar 2022 | 001-15224 |
| F-6 POS | Open Document | Open Filing | 14 Mar 2022 | 333-142654 | ||
| F-6 | Open Document | Open Filing | 14 Mar 2022 | 333-263528 | ||
| 6-K | Open Document | Open Filing | CIG20220107_6K | 10 Jan 2022 | 31 Mar 2022 | 001-15224 |
| 6-K | Open Document | Open Filing | CIG20211103_6K | 04 Nov 2021 | 31 Dec 2021 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 13 Aug 2021 | 30 Sep 2021 | 001-15224 |
| 6-K | Open Document | Open Filing | CIG20210730_6K | 02 Aug 2021 | 30 Sep 2021 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 20 Jul 2021 | 30 Sep 2021 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 09 Jun 2021 | 30 Jun 2021 | 001-15224 |
| 20-F/A | Open Document | Open Filing | CIGFORM20F_2020A | 03 May 2021 | 31 Dec 2020 | 001-15224 |
| 20-F | Open Document | Data | Open Filing | CIGFORM20F_2020 | 30 Apr 2021 | 31 Dec 2020 | 001-15224 |
| 6-K | Open Document | Open Filing | CIG20210414_6K | 14 Apr 2021 | 30 Jun 2021 | 001-15224 |
| 6-K | Open Document | Open Filing | CIG20210219_6K | 22 Feb 2021 | 31 Mar 2021 | 001-15224 |
| 6-K | Open Document | Open Filing | CIG20201211_6K | 14 Dec 2020 | 31 Dec 2020 | 001-15224 |
| 6-K | Open Document | Open Filing | FORM 6-K | 22 Oct 2020 | 31 Dec 2020 | 001-15224 |
| 6-K | Open Document | Open Filing | FORM 6-K | 06 Aug 2020 | 30 Sep 2020 | 001-15224 |
| 20-F | Open Document | Data | Open Filing | FORM 20-F | 26 May 2020 | 31 Dec 2019 | 001-15224 |
| 6-K | Open Document | Open Filing | FORM 6-K | 14 May 2020 | 30 Jun 2019 | 001-15224 |
| 6-K | Open Document | Open Filing | FORM 6-K | 28 Apr 2020 | 30 Jun 2020 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 11 Mar 2020 | 11 Mar 2020 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 06 Jan 2020 | 06 Jan 2020 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 08 Nov 2019 | 08 Nov 2019 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 19 Sep 2019 | 19 Sep 2019 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 07 Aug 2019 | 05 Aug 2019 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 12 Jun 2019 | 11 Jun 2019 | 001-15224 |
| 20-F/A | Open Document | Data | Open Filing | 20-F/A | 03 Jun 2019 | 31 Dec 2018 | 001-15224 |
| 20-F | Open Document | Open Filing | 20-F | 17 May 2019 | 31 Dec 2018 | 001-15224 |
| NT 20-F | Open Document | Open Filing | NT 20-F | 01 May 2019 | 31 Dec 2018 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 10 Apr 2019 | 09 Apr 2019 | 001-15224 |
| SC 13G/A | Open Document | Open Filing | MS AMENDMENT | 12 Feb 2019 | 005-86009 | |
| 6-K | Open Document | Open Filing | 6-K | 11 Feb 2019 | 08 Feb 2019 | 001-15224 |
| UPLOAD | Open Document | Open Filing | 08 Feb 2019 | |||
| CORRESP | Open Document | Open Filing | 11 Jan 2019 | |||
| CORRESP | Open Document | Open Filing | 13 Dec 2018 | |||
| UPLOAD | Open Document | Open Filing | 30 Nov 2018 | |||
| 6-K | Open Document | Open Filing | 6-K | 11 Sep 2018 | 11 Sep 2018 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 19 Jul 2018 | 13 Jul 2018 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 05 Jun 2018 | 04 Jun 2018 | 001-15224 |
| SC 13G | Open Document | Open Filing | MS INITIAL | 04 Jun 2018 | 005-86009 | |
| 20-F/A | Open Document | Data | Open Filing | AMENDMENT NO.1 TO FORM 20-F | 29 May 2018 | 31 Dec 2017 | 001-15224 |
| 20-F | Open Document | Open Filing | FORM 20-F | 09 May 2018 | 31 Dec 2017 | 001-15224 |
| NT 20-F | Open Document | Open Filing | NT 20-F | 30 Apr 2018 | 31 Dec 2017 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 26 Apr 2018 | 31 Mar 2018 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 14 Mar 2018 | 28 Feb 2018 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 26 Feb 2018 | 23 Feb 2018 | 001-15224 |
| 6-K | Open Document | Open Filing | FORM 6-K | 05 Feb 2018 | 05 Feb 2018 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 21 Nov 2017 | 21 Nov 2017 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 12 Oct 2017 | 11 Oct 2017 | 001-15224 |
| 6-K | Open Document | Open Filing | FORM 6-K | 08 Sep 2017 | 08 Sep 2017 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 01 Sep 2017 | 01 Sep 2017 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 26 Jul 2017 | 26 Jul 2017 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 16 Jun 2017 | 16 Jun 2017 | 001-15224 |
| 20-F | Open Document | Open Filing | FORM 20-F | 16 May 2017 | 31 Dec 2016 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 12 May 2017 | 12 May 2017 | 001-15224 |
| NT 20-F | Open Document | Open Filing | NT 20-F | 28 Apr 2017 | 31 Dec 2016 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 10 Mar 2017 | 10 Mar 2017 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 29 Dec 2016 | 29 Dec 2016 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 23 Dec 2016 | 23 Dec 2016 | 001-15224 |
| 20-F | Open Document | Open Filing | 20-F | 14 Nov 2016 | 31 Dec 2015 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 10 Nov 2016 | 10 Nov 2016 | 001-15224 |
| 6-K | Open Document | Open Filing | FORM 6-K | 01 Sep 2016 | 01 Sep 2016 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 02 Jun 2016 | 02 Jun 2016 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 25 May 2016 | 24 May 2016 | 001-15224 |
| NT 20-F | Open Document | Open Filing | NT 20-F | 02 May 2016 | 31 Dec 2015 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 06 Apr 2016 | 06 Apr 2016 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 08 Feb 2016 | 08 Feb 2016 | 001-15224 |
| 6-K | Open Document | Open Filing | FORM 6-K | 18 Dec 2015 | 18 Dec 2015 | 001-15224 |
| 6-K | Open Document | Open Filing | FORM 6-K | 19 Nov 2015 | 19 Nov 2015 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 11 Sep 2015 | 11 Sep 2015 | 001-15224 |
| 6-K | Open Document | Open Filing | FORM 6-K | 13 Jul 2015 | 13 Jul 2015 | 001-15224 |
| 6-K | Open Document | Open Filing | FORM 6-K | 01 Jun 2015 | 01 Jun 2015 | 001-15224 |
| 6-K | Open Document | Open Filing | FORM 6-K | 07 May 2015 | 07 May 2015 | 001-15224 |
| 20-F | Open Document | Open Filing | 20-F | 29 Apr 2015 | 31 Dec 2014 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 15 Apr 2015 | 14 Apr 2015 | 001-15224 |
| 6-K | Open Document | Open Filing | FORM 6-K | 09 Apr 2015 | 08 Apr 2015 | 001-15224 |
| 6-K | Open Document | Open Filing | FORM 6-K | 27 Feb 2015 | 27 Feb 2015 | 001-15224 |
| 6-K | Open Document | Open Filing | FORM 6-K | 30 Jan 2015 | 30 Jan 2015 | 001-15224 |
| UPLOAD | Open Document | Open Filing | 29 Jan 2015 | |||
| CORRESP | Open Document | Open Filing | 23 Jan 2015 | |||
| CORRESP | Open Document | Open Filing | 30 Dec 2014 | |||
| 6-K | Open Document | Open Filing | FORM 6-K | 22 Dec 2014 | 22 Dec 2014 | 001-15224 |
| UPLOAD | Open Document | Open Filing | 22 Dec 2014 | |||
| 6-K | Open Document | Open Filing | 6-K | 05 Nov 2014 | 05 Nov 2014 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 30 Sep 2014 | 30 Sep 2014 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 22 Aug 2014 | 22 Aug 2014 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 03 Jul 2014 | 03 Jul 2014 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 12 Jun 2014 | 11 Jun 2014 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 08 May 2014 | 08 May 2014 | 001-15224 |
| 20-F | Open Document | Open Filing | 20-F | 30 Apr 2014 | 31 Dec 2013 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 09 Apr 2014 | 09 Apr 2014 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 21 Feb 2014 | 28 Feb 2014 | 001-15224 |
| UPLOAD | Open Document | Open Filing | 18 Feb 2014 | |||
| CORRESP | Open Document | Open Filing | 07 Feb 2014 | |||
| UPLOAD | Open Document | Open Filing | 24 Jan 2014 | |||
| CORRESP | Open Document | Open Filing | 21 Jan 2014 | |||
| 6-K | Open Document | Open Filing | 6-K | 09 Jan 2014 | 09 Jan 2014 | 001-15224 |
| CORRESP | Open Document | Open Filing | 20 Dec 2013 | |||
| UPLOAD | Open Document | Open Filing | 16 Dec 2013 | |||
| 6-K | Open Document | Open Filing | 6-K | 10 Dec 2013 | 10 Dec 2013 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 12 Nov 2013 | 12 Nov 2013 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 07 Oct 2013 | 07 Oct 2013 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 26 Aug 2013 | 26 Aug 2013 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 24 Jul 2013 | 23 Jul 2013 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 20 Jun 2013 | 20 Jun 2013 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 21 May 2013 | 21 May 2013 | 001-15224 |
| 20-F | Open Document | Open Filing | 20-F | 30 Apr 2013 | 31 Dec 2012 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 25 Apr 2013 | 23 Apr 2013 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 04 Apr 2013 | 04 Apr 2013 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 26 Feb 2013 | 26 Feb 2013 | 001-15224 |
| SC 13G/A | Open Document | Open Filing | VONTOBEL ASSET MANAGEMENT, INC. | 13 Feb 2013 | 005-86009 | |
| 6-K | Open Document | Open Filing | 6-K | 08 Jan 2013 | 03 Jan 2013 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 18 Dec 2012 | 18 Dec 2012 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 10 Oct 2012 | 10 Oct 2012 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 27 Aug 2012 | 31 Aug 2012 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 17 Jul 2012 | 17 Jul 2012 | 001-15224 |
| SC 13G/A | Open Document | Open Filing | 10 Jul 2012 | 005-86009 | ||
| 6-K | Open Document | Open Filing | 6-K | 15 Jun 2012 | 13 Jun 2012 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 23 May 2012 | 22 May 2012 | 001-15224 |
| 20-F | Open Document | Open Filing | 20-F | 27 Apr 2012 | 31 Dec 2001 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 12 Apr 2012 | 12 Apr 2012 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 22 Mar 2012 | 22 Mar 2012 | 001-15224 |
| 6-K | Open Document | Open Filing | 6-K | 06 Mar 2012 | 06 Mar 2012 | 001-15224 |
| UPLOAD | Open Document | Open Filing | 16 Feb 2012 | |||
| SC 13G | Open Document | Open Filing | VONTOBEL ASSET MANAGEMENT, INC. | 14 Feb 2012 | 005-86009 | |
| 6-K | Open Document | Open Filing | 6-K | 06 Feb 2012 | 06 Feb 2012 | 001-15224 |
| CORRESP | Open Document | Open Filing | 03 Feb 2012 | |||
| SC 13G/A | Open Document | Open Filing | 23 Jan 2012 | 005-86009 |