| Date | Form | Description | XBRL | Pages |
|---|---|---|---|---|
| 06/06/19 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 06/06/19 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 06/06/19 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 06/06/19 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 05/31/19 | SD | Form SD: Specialized Disclosure Report filed pursuant to Section 1502 of the Dodd-Frank Wall Street Reform and Consumer Protection Act relating to the use of conflict minerals (Rule 13p-1) | 62 | |
| 05/30/19 | 10-K | Form 10-K: Annual report pursuant to Section 13 and 15(d) |
|
270 |
| 05/24/19 | 8-K | Form 8-K: Current report filing | 73 | |
| 05/22/19 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 05/22/19 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 05/22/19 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 |