| Date | Form | Description | XBRL | Pages |
|---|---|---|---|---|
| 02/25/19 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 02/25/19 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 02/25/19 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 02/25/19 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 02/25/19 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 02/19/19 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 02/14/19 | SC 13G/A | Form SC 13G/A: Statement of Beneficial Ownership by Certain Investors | 2 | |
| 02/11/19 | SC 13G/A | Form SC 13G/A: Statement of Beneficial Ownership by Certain Investors | 5 | |
| 01/31/19 | SC 13G/A | Form SC 13G/A: Statement of Beneficial Ownership by Certain Investors | 5 | |
| 12/04/18 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 |