| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 04/04/19 | 4 | Statement of changes in beneficial ownership of securities |   | 2 | |
| 01/15/19 | 4 | Statement of changes in beneficial ownership of securities |   | 2 | |
| 12/17/18 | 4 | Statement of changes in beneficial ownership of securities |   | 2 | |
| 10/02/18 | 4 | Statement of changes in beneficial ownership of securities |   | 2 | |
| 10/02/18 | 4 | Statement of changes in beneficial ownership of securities |   | 2 | |
| 07/23/18 | 4 | Statement of changes in beneficial ownership of securities |   | 2 | |
| 07/23/18 | 4 | Statement of changes in beneficial ownership of securities |   | 2 | |
| 05/17/18 | 4 | Statement of changes in beneficial ownership of securities |   | 2 | |
| 02/26/18 | 4 | Statement of changes in beneficial ownership of securities |   | 1 | |
| 01/23/18 | 3/A | Initial statement of beneficial ownership of securities |   | 1 |