K12 Inc. (NYSE:LRN) acquired the remaining 40% stake in Middlebury Interactive Languages from Middlebury College Endowment for $9.1 million on December 27, 2016. K12 Inc. (NYSE:LRN) completed the acquisition of the remaining 40% stake in Middlebury Interactive Languages from Middlebury College Endowment on December 27, 2016.