Casella Casella Waste Systems Inc. (CWST) presented its Q4 2020 financial results as well as figures for the fiscal year ended December 31, 2020. The company cited the resiliency of its business model and systems enhancements for its ability to respond to sales trends and market changes while executing its long-term growth strategy. Volumes further rebounded in Q4 as commercial customers reopened, construction activity returned and economic activity moved in a positive direction for Casella’s secondary and rural markets in the Northeast. "This year was unprecedented in our strong performance and execution highlights the resiliency of our business, along with a courage, dedication and tenacity of our 2500 employees," said John Casella, chairman and CEO.