SEC EDGAR filings, ownership reports, and insider transactions for Denis Yevstifeyev.
| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 04 Jan 2022 | 31 Dec 2021 | 000-55779 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Jan 2021 | 15 Dec 2020 | 000-55779 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Jan 2021 | 04 Jan 2021 | 000-55779 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Dec 2020 | 15 Jun 2020 | 000-55779 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Oct 2020 | 20 Jun 2019 | 000-55779 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Dec 2017 | 15 Dec 2017 | 000-55779 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 Apr 2017 | 28 Apr 2017 | 000-55779 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Aug 2013 | 21 Aug 2013 | 001-33935 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 Mar 2013 | 22 Mar 2013 | 001-33935 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 Mar 2013 | 21 Mar 2013 | 000-54917 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Mar 2013 | 14 Mar 2013 | 001-33935 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Mar 2013 | 28 Feb 2013 | 001-33935 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Jan 2013 | 25 Jan 2013 | 001-33935 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Jan 2013 | 22 Jan 2013 | 001-33935 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 Jan 2013 | 18 Jan 2013 | 001-33935 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Jan 2013 | 15 Jan 2013 | 001-33935 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 Sep 2012 | 26 Sep 2012 | 001-33935 |