Investment firm Beaconhouse Capital Management LLC has combined several plastics materials assets to create Alterra Holdings LLC. Chatham, N.J.-based Beaconhouse acquired all three parts of Alterra in 2016, with a goal of pursuing specialty plastic acquisitions in the elastomer space, Chief Financial Officer Saquib Toor said in an April 25 phone interview. It first acquired bioplastics firm Trellis Earth Products Inc. of Wilsonville, Ore. Trellis had marketed bio-based finished products and also had operated a bioplastic materials plant in Seymour, Ind., that it acquired from Cereplast Inc. in 2014. Beaconhouse next became a majority owner of Compounding Engineering Solutions Inc., the Clifton, N.J.-based compounder, which also includes Harmony Elastomers. CES was co-founded in 1999 by industry veteran Arash Kiani. “We were trying to find the best compounder, and we found CES,” said Toor, who also serves as a managing partner for Beaconhouse. “We’ve changed the model of the other businesses to reflect what CES was doing.” Dr. Kiani now serves as president of Alterra.