| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 12/16/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  3 | |
| 12/10/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 12/03/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 12/02/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 12/02/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 12/01/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 12/01/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 12/01/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 11/30/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 11/24/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | 

