PrimeSource adds Drew Meng to lead PrimeSource Building Products as CEO and Robert Roche to serve as Chief Financial Officer of PrimeSource Brands. Tom Koos will continue as CEO of PrimeSource Brands.The company made a shift in leadership due to recent acquisitions creating three strategic business units within PrimeSource Brands, including PrimeSource Building Products, Inc., Dimora Brands and Wolf Home Products, each with robust product portfolios focused on residential repair, remodel, and new construction.