Calyxt and S&W’s Gene-Edited Alfalfa Plant Designated as Non-Regulated by USDA Improved Quality Alfalfa Product Candidate Represents Sixth Product from Calyxt to be confirmed as non-regulated Minneapolis-St. Paul, Minn. And Sacramento, Cali., October 2, 2017 – Calyxt, Inc. (NASDAQ:CLXT), a consumer-centric, food- and agriculture-focused company, and S&W Seed Company (NASDAQ:SANW), a global leader in the alfalfa seed industry, today announced that the first of its two alfalfa product candidates has been designated as a non-regulated article under “Am I Regulated?” Process by Biotechnology Regulatory Services of the Animal and Plant Health Inspection Service (APHIS), an agency of the USDA. With this notification by the USDA, the improved quality alfalfa is the sixth Calyxt product candidate, developed using Calyxt’s proprietary gene editing technology TALEN®, to be confirmed as a non-regulated article by the USDA including its high oleic soybean, high oleic / low linolenic soybean, powdery mildew resistant wheat, cold storable potato and reduced browning potato. “The accomplishment represents another milestone for Calyxt in our efforts to develop and commercialize innovative agriculturally advantageous traits for the food and agriculture industries,” said Federico Tripodi, CEO of Calyxt. “Calyxt’s innovative technology and partnership with S&W Seed Company is crucial in the development of the alfalfa pipeline. We look forward to our continued partnership with S&W as we advance this product candidate to the market.” Mark Wong, CEO of S&W Seed Company, commented, “S&W is proud to be on the leading edge of new breeding technologies with this collaboration with Calyxt. We are excited to commercialize this leading-edge technology, with this being just the first in a pipeline of products for the alfalfa seed market.” The improved quality alfalfa product is the first ever alfalfa product to receive the non-regulated distinction from the USDA. The collaboration between Calyxt and S&W Seed Company is focused on providing enhanced traits in alfalfa seed varieties that can drive improved productivity, while decreasing input costs to meet the growing global demand for higher quality alfalfa products.