Lon Bell, Director at ClearSign Combustion, holds 237.55K shares in Ideal Power (Ticker: IPWR), holds 381.50K shares in ClearSign Combustion (Ticker: CLIR), holds 1.25M shares in CDTi Advanced Materials (Ticker: CDTI). Most recently, Lon Bell Bought ― shares of Ideal Power on Apr 06, 2020 for an estimated value of 6.01K.