| Date | Form | Description | XBRL | Pages |
|---|---|---|---|---|
| 02/22/19 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 02/22/19 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 02/22/19 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 02/13/19 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 01/28/19 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 01/28/19 | 4/A | Form 4/A: Statement of changes in beneficial ownership of securities | 2 | |
| 12/31/18 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 12/28/18 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 12/26/18 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 12/21/18 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 |