SEC EDGAR filings, ownership reports, and insider transactions for Yan Tang.
| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| SCHEDULE 13D/A | Open Document | Open Filing | 23 Sep 2025 | |||
| SCHEDULE 13D/A | Open Document | Open Filing | 15 Apr 2025 | |||
| 144 | Open Document | Open Filing | 25 Mar 2025 | |||
| SC 13D/A | Open Document | Open Filing | SCHEDULE 13D AMENDMENT NO. 5 | 22 May 2018 | ||
| SC 13D/A | Open Document | Open Filing | SCHEDULE 13D AMENDMENT NO. 4 | 19 May 2017 | ||
| SC 13D/A | Open Document | Open Filing | SCHEDULE 13D AMENDMENT NO. 3 | 26 Apr 2017 | ||
| SC 13D/A | Open Document | Open Filing | SCHEDULE 13D AMENDMENT NO. 2 | 23 Aug 2016 | ||
| SC 13D/A | Open Document | Data | Open Filing | SC 13D/A | 06 Apr 2016 | ||
| SC 13D | Open Document | Open Filing | SCHEDULE 13D | 06 Jul 2015 | ||
| SC 13G | Open Document | Open Filing | SCHEDULE 13G | 17 Feb 2015 |