CASI - Casi Pharmaceuticals jumps 6% after CEO buys 227.5K shares November, 25 2020 06:39 AM CASI Pharmaceuticals Inc. Casi Pharmaceuticals (CASI) CEO Wei-Wu He buys 227.5K shares of common stock on November 20, in a total transaction size of $488.Form 4. For further details see: Casi Pharmaceuticals jumps 6% after CEO buys 227.5K shares