Oshkosh Corporation – OSK: Involvement in a Previously Undisclosed SEC Investigation Now Appears Over – Removed from Watch List – Documents Received. Recently received documents show the undisclosed SEC investigation of Oshkosh, that we’ve been tracking since Jan-2017, was a FCPA investigation that ended in Jan-2018. We’ve found that too many investors ignore, even blow-off FCPA investigations. That is misguided. We explain in today’s report.