Four th Quar ter 20 19 Res ul ts 12 In mil li ons Indus tria l E ne rgy T ot a l Co mpa ny V olume s t ons 3 2 3 3 6 6 Rev e nue 1 6 1 4 1 5 1 9 3 1 3 3 Gros s P rofit 4 6 4 12 5 3 3 9 Co nt ribution M a rgin 4 6 4 1 7 4 8 1 SGA 3 7 4 A dj us ted E BITD A 0 1 1 I ncl udes nega t i ve i m pact of 1 9 m m l ease expen se f r om l ease accoun t i ng st anda r d chang e 2 I ncl udes 1 7 m i l l i on i n non cash st ock com pensa t i on expen ses