NKGen Biotech Inc. Common Stock. Replay the stock market charts of NKGN day by day, back to 2003. Open long and short positions without spending any money. Graf Acquisition Corp. IV does not have significant operations. It focuses on effecting a merger, capital stock exchange, asset acquisition, stock purchase, reorganization, or other business combination with one or more businesses. Graf Acquisition Corp. IV was incorporated in 2021 and is based in The Woodlands, Texas.