| Form type | Sec Links | Description | Filing date | Reporting date |
|---|---|---|---|---|
| SC 13D/A | Report | SC 13D/A | Aug 14, 2017 | |
| SC 13D/A | Report | ROBERT E. ROBOTTI SC 13D A NO. 6 7-1-2016 (HICKOK INCORPORATED) | Aug 8, 2016 | |
| SC 13D | Report | SC 13D | Jul 11, 2016 | |
| SC 13D/A | Report | FORM SC 13D/A | Jan 13, 2015 | |
| SC 13D/A | Report | ROBERT E. ROBOTTI SC 13DA NO 5 9-30-2014 (HICKOK INCORPORATED) | Dec 12, 2014 | |
| SC 13D/A | Report | SC 13D/A | Nov 25, 2014 | |
| SC 13D/A | Report | ROBERT E. ROBOTTI SC13D A NO 4 1-11-2011 (HICKOK INCORPORATED) | Mar 12, 2014 | |
| SC 13D/A | Report | SC 13D/A | Jan 9, 2013 | |
| SC 13D | Report | SCHEDULE 13D AMEND 6 RL BAUMAN 1-7-13 | Jan 7, 2013 | |
| SC 13D | Report | JHS 13D | Jan 10, 2012 | |
| SC 13D | Report | RLB 13D | Jan 10, 2012 | |
| SC 13D | Report | SC 13D | Jan 10, 2012 | |
| SC 13D | Report | SCHEDULE 13D | Jan 9, 2012 | |
| SC 13D/A | Report | SCHEDULE 13D AMENDMENT | Jan 18, 2011 |