| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | ALEX KO LAST FORM 4 | 27 Mar 2024 | 27 Mar 2024 | 001-38149 |
| 4 | Open Document | Open Filing | ALEX KO STOCK OPTION CANCELLATTION | 22 Dec 2023 | 08 Dec 2023 | 001-38149 |
| 3/A | Open Document | Open Filing | ALEX KO FORM 3-A | 08 Mar 2023 | 01 Mar 2023 | 001-38149 |
| 3 | Open Document | Open Filing | ALEX KO FORM 3 | 06 Mar 2023 | 01 Mar 2023 | 001-38149 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 25 May 2022 | 23 May 2022 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 23 May 2022 | 19 May 2022 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 26 Apr 2022 | 22 Apr 2022 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 25 Mar 2022 | 23 Mar 2022 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 21 Mar 2022 | 17 Mar 2022 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 17 Mar 2022 | 15 Mar 2022 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 09 Mar 2022 | 07 Mar 2022 | 000-50245 |
| 5 | Open Document | Open Filing | FORM 5 SUBMISSION | 11 Feb 2022 | 31 Dec 2021 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 02 Sep 2021 | 01 Sep 2021 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 26 May 2021 | 24 May 2021 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 21 May 2021 | 19 May 2021 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 28 Apr 2021 | 26 Apr 2021 | 000-50245 |
| 4/A | Open Document | Open Filing | FORM 4/A SUBMISSION | 28 Apr 2021 | 22 Apr 2021 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 26 Apr 2021 | 22 Apr 2021 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 10 Mar 2021 | 08 Mar 2021 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 03 Sep 2020 | 01 Sep 2020 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 29 Jul 2020 | 27 Jul 2020 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 26 May 2020 | 25 May 2020 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 27 Apr 2020 | 26 Apr 2020 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 24 Apr 2020 | 22 Apr 2020 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 17 Mar 2020 | 15 Mar 2020 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 10 Mar 2020 | 06 Mar 2020 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 03 Sep 2019 | 01 Sep 2019 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 30 Jul 2019 | 27 Jul 2019 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 23 Jul 2019 | 19 Jul 2019 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 28 May 2019 | 23 May 2019 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 12 Mar 2019 | 08 Mar 2019 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 30 Apr 2018 | 26 Apr 2018 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 31 Oct 2017 | 27 Oct 2017 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 31 Jul 2017 | 27 Jul 2017 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 06 Sep 2016 | 01 Sep 2016 | 000-50245 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Aug 2016 | 29 Jul 2016 | 000-50245 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Aug 2016 | 29 Jul 2016 | 000-50245 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Aug 2016 | 29 Jul 2016 | 000-50923 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 Mar 2016 | 16 Mar 2016 | 000-50923 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Mar 2016 | 02 Mar 2016 | 000-50923 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Apr 2015 | 15 Apr 2015 | 000-50923 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Apr 2015 | 08 Apr 2015 | 000-50923 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Jan 2015 | 15 Jan 2015 | 000-50923 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Oct 2014 | 15 Oct 2014 | 000-50923 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Jul 2014 | 15 Jul 2014 | 000-50923 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Jun 2014 | 15 Apr 2014 | 000-50923 |