| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | ALEX KO LAST FORM 4 | Mar 27, 2024 | Mar 27, 2024 | 001-38149 |
| 4 | Open Document | Open Filing | ALEX KO STOCK OPTION CANCELLATTION | Dec 22, 2023 | Dec 8, 2023 | 001-38149 |
| 3/A | Open Document | Open Filing | ALEX KO FORM 3-A | Mar 8, 2023 | Mar 1, 2023 | 001-38149 |
| 3 | Open Document | Open Filing | ALEX KO FORM 3 | Mar 6, 2023 | Mar 1, 2023 | 001-38149 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 25, 2022 | May 23, 2022 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 23, 2022 | May 19, 2022 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Apr 26, 2022 | Apr 22, 2022 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 25, 2022 | Mar 23, 2022 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 21, 2022 | Mar 17, 2022 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 17, 2022 | Mar 15, 2022 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 9, 2022 | Mar 7, 2022 | 000-50245 |
| 5 | Open Document | Open Filing | FORM 5 SUBMISSION | Feb 11, 2022 | Dec 31, 2021 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Sep 2, 2021 | Sep 1, 2021 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 26, 2021 | May 24, 2021 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 21, 2021 | May 19, 2021 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Apr 28, 2021 | Apr 26, 2021 | 000-50245 |
| 4/A | Open Document | Open Filing | FORM 4/A SUBMISSION | Apr 28, 2021 | Apr 22, 2021 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Apr 26, 2021 | Apr 22, 2021 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 10, 2021 | Mar 8, 2021 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Sep 3, 2020 | Sep 1, 2020 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jul 29, 2020 | Jul 27, 2020 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 26, 2020 | May 25, 2020 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Apr 27, 2020 | Apr 26, 2020 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Apr 24, 2020 | Apr 22, 2020 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 17, 2020 | Mar 15, 2020 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 10, 2020 | Mar 6, 2020 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Sep 3, 2019 | Sep 1, 2019 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jul 30, 2019 | Jul 27, 2019 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jul 23, 2019 | Jul 19, 2019 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 28, 2019 | May 23, 2019 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 12, 2019 | Mar 8, 2019 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Apr 30, 2018 | Apr 26, 2018 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Oct 31, 2017 | Oct 27, 2017 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jul 31, 2017 | Jul 27, 2017 | 000-50245 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Sep 6, 2016 | Sep 1, 2016 | 000-50245 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 2, 2016 | Jul 29, 2016 | 000-50245 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 2, 2016 | Jul 29, 2016 | 000-50245 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 2, 2016 | Jul 29, 2016 | 000-50923 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 25, 2016 | Mar 16, 2016 | 000-50923 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 4, 2016 | Mar 2, 2016 | 000-50923 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 17, 2015 | Apr 15, 2015 | 000-50923 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 10, 2015 | Apr 8, 2015 | 000-50923 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 16, 2015 | Jan 15, 2015 | 000-50923 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 16, 2014 | Oct 15, 2014 | 000-50923 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 16, 2014 | Jul 15, 2014 | 000-50923 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 27, 2014 | Apr 15, 2014 | 000-50923 |