| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 11/30/20 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 
                                            
                             | 
                                    1 | |
| 10/01/20 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 
                                            
                             | 
                                    1 | |
| 09/16/20 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 
                                            
                             | 
                                    1 | |
| 08/20/20 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 
                                            
                             | 
                                    1 | |
| 08/20/20 | 3 | Form 3: Initial statement of beneficial ownership of securities | 
                                            
                             | 
                                    2 | |
| 07/23/20 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 
                                            
                             | 
                                    1 | |
| 07/16/20 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 
                                            
                             | 
                                    1 | |
| 06/16/20 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 
                                            
                             | 
                                    1 | |
| 06/12/20 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 
                                            
                             | 
                                    1 | |
| 05/18/20 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 
                                            
                             | 
                                    1 | 
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