| Date | Form | Description | XBRL | Pages |
|---|---|---|---|---|
| 02/28/19 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 02/28/19 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 02/28/19 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 02/28/19 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 12/27/18 | 4/A | Form 4/A: Statement of changes in beneficial ownership of securities | 1 |
