| Date | Form | Description | XBRL | Pages |
|---|---|---|---|---|
| 02/20/18 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 02/20/18 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 02/20/18 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 02/14/18 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 02/14/18 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 02/14/18 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 02/09/18 | SC 13G/A | Form SC 13G/A: Statement of Beneficial Ownership by Certain Investors | 5 | |
| 02/07/18 | SC 13G/A | Form SC 13G/A: Statement of Beneficial Ownership by Certain Investors | 13 | |
| 02/02/18 | SC 13G/A | Form SC 13G/A: Statement of Beneficial Ownership by Certain Investors | 5 | |
| 01/19/18 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 |