Tranche Update on AdvanSix Inc.'s Equity Buyback Plan announced on February 22, 2019.

AdvanSix Inc. is a diversified chemistry company. It produces essential materials for its customers in a variety of end markets and applications, including building and construction, fertilizers, agrochemicals, plastics, solvents, packaging, paints, coatings, adhesives, and electronics. Its product lines include Nylon, Caprolactam, Ammonium Sulfate, and Chemical Intermediate. It sells its Nylon 6 resin globally, primarily under the Aegis brand name. Nylon 6 is a polymer resin, which is a synthetic material used by its customers to produce fibers, filaments, engineered plastics and films. Caprolactam is the monomer used in the production of Nylon 6 resin. Its ammonium sulfate is used by customers as a fertilizer containing nitrogen and sulfur, two key plant nutrients. It manufactures, markets, and sells a number of other chemical intermediate products, such as phenol, alpha-methyl styren, cyclohexanone, 2-pentanone oxime, cyclohexanol, sulfuric acid, ammonia and carbon dioxide.