| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 6-K | Open Document | Open Filing | FORM 6-K | 06 Nov 2025 | 06 Nov 2025 | 000-51847 |
| S-8 POS | Open Document | Open Filing | S-8 POS | 13 Aug 2025 | 333-176863 | |
| 6-K | Open Document | Open Filing | FORM 6-K | 13 Aug 2025 | 13 Aug 2025 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 07 Aug 2025 | 07 Aug 2025 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 13 Jun 2025 | 13 Jun 2025 | 000-51847 |
| SD | Open Document | Open Filing | FORM SD | 23 May 2025 | 000-51847 | |
| 6-K | Open Document | Open Filing | FORM 6-K | 08 May 2025 | 08 May 2025 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 08 May 2025 | 08 May 2025 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 08 Apr 2025 | 08 Apr 2025 | 000-51847 |
| 20-F | Open Document | Data | Open Filing | 20-F | 02 Apr 2025 | 31 Dec 2024 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 13 Feb 2025 | 13 Feb 2025 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 04 Dec 2024 | 04 Dec 2024 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 07 Nov 2024 | 07 Nov 2024 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 14 Aug 2024 | 14 Aug 2024 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 08 Aug 2024 | 08 Aug 2024 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 12 Jun 2024 | 12 Jun 2024 | 000-51847 |
| SD | Open Document | Open Filing | FORM SD | 22 May 2024 | 000-51847 | |
| 6-K | Open Document | Open Filing | FORM 6-K | 09 May 2024 | 09 May 2024 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 09 May 2024 | 09 May 2024 | 000-51847 |
| 20-F | Open Document | Data | Open Filing | FORM 20-F | 02 Apr 2024 | 31 Dec 2023 | 000-51847 |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | 07 Feb 2024 | 005-81789 | |
| SC 13G/A | Open Document | Open Filing | FORM SC13G/A | 07 Feb 2024 | 005-81789 | |
| 6-K | Open Document | Open Filing | FORM 6-K | 06 Feb 2024 | 06 Feb 2024 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 09 Nov 2023 | 09 Nov 2023 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 16 Aug 2023 | 16 Aug 2023 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 10 Aug 2023 | 10 Aug 2023 | 000-51847 |
| UPLOAD | Open Document | Open Filing | 03 Aug 2023 | |||
| CORRESP | Open Document | Open Filing | 28 Jul 2023 | |||
| UPLOAD | Open Document | Open Filing | 24 Jul 2023 | |||
| CORRESP | Open Document | Open Filing | 29 Jun 2023 | |||
| CORRESP | Open Document | Open Filing | 21 Jun 2023 | |||
| 6-K | Open Document | Open Filing | FORM 6-K | 14 Jun 2023 | 14 Jun 2023 | 000-51847 |
| UPLOAD | Open Document | Open Filing | 08 Jun 2023 | |||
| SD | Open Document | Open Filing | FORM SD | 24 May 2023 | 000-51847 | |
| 6-K | Open Document | Open Filing | FORM 6-K | 11 May 2023 | 11 May 2023 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 11 May 2023 | 11 May 2023 | 000-51847 |
| 20-F | Open Document | Data | Open Filing | 20-F | 06 Apr 2023 | 31 Dec 2022 | 000-51847 |
| SC 13G/A | Open Document | Open Filing | YIHENG13GA3HIMX | 14 Feb 2023 | 005-81789 | |
| SC 13G/A | Open Document | Open Filing | FORM SC13G/A | 10 Feb 2023 | 005-81789 | |
| SC 13G/A | Open Document | Open Filing | FORM SC 13G/A | 10 Feb 2023 | 005-81789 | |
| 6-K | Open Document | Open Filing | FORM 6-K | 09 Feb 2023 | 09 Feb 2023 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 12 Jan 2023 | 12 Jan 2023 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 10 Nov 2022 | 10 Nov 2022 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 28 Oct 2022 | 28 Oct 2022 | 000-51847 |
| S-8 POS | Open Document | Open Filing | S-8 POS | 16 Aug 2022 | 333-176863 | |
| 6-K | Open Document | Open Filing | FORM 6-K | 16 Aug 2022 | 16 Aug 2022 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 11 Aug 2022 | 11 Aug 2022 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 21 Jun 2022 | 20 Jun 2022 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 15 Jun 2022 | 15 Jun 2022 | 000-51847 |
| SD | Open Document | Open Filing | FORM SD | 25 May 2022 | 000-51847 | |
| 6-K | Open Document | Open Filing | FORM 6-K | 12 May 2022 | 12 May 2022 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 12 May 2022 | 12 May 2022 | 000-51847 |
| 20-F | Open Document | Data | Open Filing | 20-F | 23 Mar 2022 | 31 Dec 2021 | 000-51847 |
| SC 13G/A | Open Document | Open Filing | YIHENG13GA2HIMX | 01 Mar 2022 | 005-81789 | |
| 6-K | Open Document | Open Filing | FORM 6-K | 17 Feb 2022 | 17 Feb 2022 | 000-51847 |
| SC 13G/A | Open Document | Open Filing | YIHENG13GA1HIMX | 14 Feb 2022 | 005-81789 | |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | 11 Feb 2022 | 005-81789 | |
| 6-K | Open Document | Open Filing | FORM 6-K | 03 Dec 2021 | 03 Dec 2021 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 04 Nov 2021 | 04 Nov 2021 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 25 Aug 2021 | 25 Aug 2021 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 05 Aug 2021 | 05 Aug 2021 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 15 Jun 2021 | 15 Jun 2021 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 28 May 2021 | 28 May 2021 | 000-51847 |
| SD | Open Document | Open Filing | FORM SD | 21 May 2021 | 000-51847 | |
| 6-K | Open Document | Open Filing | FORM 6-K | 10 May 2021 | 07 Apr 2021 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 06 May 2021 | 06 May 2021 | 000-51847 |
| 20-F | Open Document | Data | Open Filing | FORM 20-F | 31 Mar 2021 | 31 Dec 2020 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 04 Feb 2021 | 04 Feb 2021 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 07 Jan 2021 | 07 Jan 2021 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 12 Nov 2020 | 12 Nov 2020 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 06 Oct 2020 | 06 Oct 2020 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 26 Aug 2020 | 26 Aug 2020 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 06 Aug 2020 | 06 Aug 2020 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 14 Jul 2020 | 14 Jul 2020 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 13 Jul 2020 | 13 Jul 2020 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 06 Jul 2020 | 06 Jul 2020 | 000-51847 |
| SD | Open Document | Open Filing | FORM SD | 22 May 2020 | 000-51847 | |
| 6-K | Open Document | Open Filing | FORM 6-K | 07 May 2020 | 07 May 2020 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 03 Apr 2020 | 03 Apr 2020 | 000-51847 |
| 20-F | Open Document | Data | Open Filing | FORM 20-F | 25 Mar 2020 | 31 Dec 2019 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 13 Feb 2020 | 13 Feb 2020 | 000-51847 |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | 05 Feb 2020 | 005-81789 | |
| 6-K | Open Document | Open Filing | FORM 6-K | 07 Jan 2020 | 07 Jan 2020 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 07 Nov 2019 | 07 Nov 2019 | 000-51847 |
| S-8 POS | Open Document | Open Filing | FORM S-8 POS | 28 Aug 2019 | 333-176863 | |
| 6-K | Open Document | Open Filing | FORM 6-K | 28 Aug 2019 | 28 Aug 2019 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 08 Aug 2019 | 08 Aug 2019 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 15 Jul 2019 | 15 Jul 2019 | 000-51847 |
| SD | Open Document | Open Filing | FORM SD | 24 May 2019 | 000-51847 | |
| 6-K | Open Document | Open Filing | FORM 6-K | 09 May 2019 | 09 May 2019 | 000-51847 |
| 20-F | Open Document | Data | Open Filing | FORM 20-F | 28 Mar 2019 | 31 Dec 2018 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 19 Feb 2019 | 19 Feb 2019 | 000-51847 |
| SC 13G/A | Open Document | Open Filing | 13 Feb 2019 | 005-81789 | ||
| 6-K | Open Document | Open Filing | FORM 6-K | 30 Nov 2018 | 30 Nov 2018 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 08 Nov 2018 | 08 Nov 2018 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 05 Oct 2018 | 05 Oct 2018 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 29 Aug 2018 | 29 Aug 2018 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 09 Aug 2018 | 09 Aug 2018 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 09 Jul 2018 | 09 Jul 2018 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 19 Jun 2018 | 19 Jun 2018 | 000-51847 |
| SD | Open Document | Open Filing | FORM SD | 25 May 2018 | 000-51847 | |
| 6-K | Open Document | Open Filing | FORM 6-K | 11 May 2018 | 10 May 2018 | 000-51847 |
| 20-F | Open Document | Data | Open Filing | FORM 20-F | 28 Mar 2018 | 31 Dec 2017 | 000-51847 |
| SC 13G | Open Document | Open Filing | 13 Feb 2018 | 005-81789 | ||
| 6-K | Open Document | Open Filing | FORM 6-K | 13 Feb 2018 | 13 Feb 2018 | 000-51847 |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | 01 Feb 2018 | 005-81789 | |
| 6-K | Open Document | Open Filing | FORM 6-K | 09 Nov 2017 | 09 Nov 2017 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 26 Sep 2017 | 26 Sep 2017 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 06 Sep 2017 | 06 Sep 2017 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 30 Aug 2017 | 30 Aug 2017 | 000-51847 |
| 6-K | Open Document | Data | Open Filing | FORM 6-K | 03 Aug 2017 | 03 Aug 2017 | 000-51847 |
| 6-K | Open Document | Data | Open Filing | FORM 6-K | 19 Jul 2017 | 19 Jul 2017 | 000-51847 |
| EFFECT | Open Document | Open Filing | 14 Jul 2017 | 333-219169 | ||
| UPLOAD | Open Document | Open Filing | 12 Jul 2017 | |||
| CORRESP | Open Document | Open Filing | 11 Jul 2017 | |||
| 6-K | Open Document | Open Filing | FORM 6-K | 11 Jul 2017 | 11 Jul 2017 | 000-51847 |
| F-6 | Open Document | Open Filing | 06 Jul 2017 | 333-219169 | ||
| UPLOAD | Open Document | Open Filing | 29 Jun 2017 | |||
| 6-K | Open Document | Open Filing | FORM 6-K | 23 Jun 2017 | 23 Jun 2017 | 000-51847 |
| SD | Open Document | Open Filing | FORM SD | 31 May 2017 | 000-51847 | |
| SC 13G | Open Document | Open Filing | SC 13G | 30 May 2017 | 005-81789 | |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | 30 May 2017 | 005-81789 | |
| 6-K | Open Document | Open Filing | FORM 6-K | 11 May 2017 | 11 May 2017 | 000-51847 |
| 20-F | Open Document | Data | Open Filing | FORM 20-F | 12 Apr 2017 | 31 Dec 2016 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 17 Feb 2017 | 16 Feb 2017 | 000-51847 |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | 10 Feb 2017 | 005-81789 | |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | 10 Feb 2017 | 005-81789 | |
| 6-K | Open Document | Open Filing | FORM 6-K | 26 Jan 2017 | 26 Jan 2017 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 14 Nov 2016 | 10 Nov 2016 | 000-51847 |
| S-8 POS | Open Document | Open Filing | FORM S-8 POS | 06 Sep 2016 | 333-176863 | |
| 6-K | Open Document | Open Filing | FORM 6-K | 01 Sep 2016 | 01 Sep 2016 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 12 Aug 2016 | 11 Aug 2016 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 12 Jul 2016 | 12 Jul 2016 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 05 Jul 2016 | 05 Jul 2016 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 01 Jul 2016 | 01 Jul 2016 | 000-51847 |
| 6-K | Open Document | Data | Open Filing | FORM 6-K | 20 Jun 2016 | 20 Jun 2016 | 000-51847 |
| SD | Open Document | Open Filing | FORM SD | 25 May 2016 | 000-51847 | |
| 6-K | Open Document | Data | Open Filing | FORM 6-K | 12 May 2016 | 12 May 2016 | 000-51847 |
| 20-F | Open Document | Data | Open Filing | FORM 20-F | 13 Apr 2016 | 31 Dec 2015 | 000-51847 |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | 05 Feb 2016 | 005-81789 | |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | 05 Feb 2016 | 005-81789 | |
| 6-K | Open Document | Open Filing | FORM 6-K | 04 Feb 2016 | 04 Feb 2016 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 07 Jan 2016 | 07 Jan 2016 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K FILING DOCUMENT | 12 Nov 2015 | 12 Nov 2015 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 28 Aug 2015 | 28 Aug 2015 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K FILING DOCUMENT | 07 Aug 2015 | 07 Aug 2015 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K FILING DOCUMENT | 08 Jul 2015 | 12 Feb 2015 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 08 Jul 2015 | 08 Jul 2015 | 000-51847 |
| SD | Open Document | Open Filing | FORM SD | 22 May 2015 | 000-51847 | |
| 6-K | Open Document | Open Filing | FORM 6-K FILING DOCUMENT | 18 May 2015 | 11 May 2015 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K FILING DOCUMENT | 15 May 2015 | 14 May 2015 | 000-51847 |
| 20-F | Open Document | Data | Open Filing | FORM 20-F | 15 Apr 2015 | 31 Dec 2014 | 000-51847 |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | 13 Feb 2015 | 005-81789 | |
| SC 13G/A | Open Document | Open Filing | SCHEDULE 13G/A | 13 Feb 2015 | 005-81789 | |
| 6-K | Open Document | Open Filing | FORM 6-K FILING DOCUMENT | 13 Nov 2014 | 13 Nov 2014 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 28 Aug 2014 | 28 Aug 2014 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K FILING DOCUMENT | 07 Aug 2014 | 07 Aug 2014 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K | 08 Jul 2014 | 08 Jul 2014 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K FILING DOCUMENT | 09 Jun 2014 | 09 Jun 2014 | 000-51847 |
| SD | Open Document | Open Filing | 22 May 2014 | 000-51847 | ||
| 6-K | Open Document | Open Filing | FORM 6-K FILING DOCUMENT | 08 May 2014 | 08 May 2014 | 000-51847 |
| 20-F | Open Document | Data | Open Filing | FORM 20-F | 15 Apr 2014 | 31 Dec 2013 | 000-51847 |
| 6-K | Open Document | Open Filing | FORM 6-K FILING DOCUMENT | 15 Apr 2014 | 15 Apr 2014 | 000-51847 |
| SC 13G/A | Open Document | Open Filing | SCHEDULE 13G AMENDMENT FILING | 14 Feb 2014 | 005-81789 | |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | 14 Feb 2014 | 005-81789 | |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | 14 Feb 2014 | 005-81789 | |
| 6-K | Open Document | Open Filing | FORM 6-K FILING DOCUMENT | 13 Feb 2014 | 13 Feb 2014 | 000-51847 |