| 10-K | Annual report [Section 13 and 15(d), not S-K Item 405] | March 28, 2019 | |
| 10-12G | Registration of securities [Section 12(g)] | March 25, 2019 | |
| D | Notice of Exempt Offering of Securities | March 18, 2019 | |
| D | Notice of Exempt Offering of Securities | March 18, 2019 | |
| D | Notice of Exempt Offering of Securities | March 18, 2019 | |
| RW | Registration Withdrawal Request | March 8, 2019 | |
| 8-K | Current report | March 1, 2019 | |
| 3 | Initial statement of beneficial ownership of securities | January 22, 2019 | |
| 3 | Initial statement of beneficial ownership of securities | January 15, 2019 | |
| 3 | Initial statement of beneficial ownership of securities | January 10, 2019 | |