| S-1/A | General form for registration of securities under the Securities Act of 1933 | December 4, 2019 | |
| UPLOAD | SEC-generated letter | November 27, 2019 | |
| S-1 | General form for registration of securities under the Securities Act of 1933 | November 22, 2019 | |
| 10-Q | Quarterly report [Sections 13 or 15(d)] | November 13, 2019 | |
| DEF 14C | Other definitive information statements | October 25, 2019 | |
| 8-K | Current report | October 18, 2019 | |
| PRER14C | Information statements | September 10, 2019 | |
| PRE 14C | Other preliminary information statements | September 6, 2019 | |
| 8-K | Current report | September 5, 2019 | |
| 10-Q | Quarterly report [Sections 13 or 15(d)] | August 2, 2019 | |