| 8-K | Current report | December 28, 2020 | |
| 8-K | Current report | December 18, 2020 | |
| 8-K | Current report | December 8, 2020 | |
| 10-Q | Quarterly report [Sections 13 or 15(d)] | November 13, 2020 | |
| 8-K | Current report | October 20, 2020 | |
| D | Notice of Exempt Offering of Securities | September 28, 2020 | |
| 8-K | Current report | September 17, 2020 | |
| D | Notice of Exempt Offering of Securities | August 26, 2020 | |
| 8-K | Current report | August 26, 2020 | |
| SC 13D | General statement of acquisition of beneficial ownership | August 19, 2020 | |