Westinghouse Air Brake Technologies Corp $6,742,693 Matthews International Corp $429,200 MSA Safety Incorporated $2,274,300 Allison Transmission Holdings Inc $3,309,137 Westinghouse Air Brake Technologies Corp $6,742,693 Matthews International Corp $429,200 MSA Safety Incorporated $2,274,300 Allison Transmission Holdings Inc $3,309,137