Ownership Filing by Alexander Zukiwski

This filing details the ownership of CASI Pharmaceuticals, Inc. by Alexander Zukiwski, the Global Chief Medical Officer. The filing, dated March 18, 2026, reports Zukiwski's direct ownership of various stock options. These options, all fully vested and exercisable, have an exercise price of $1.93 and an expiration date of April 20, 2027. The total number of underlying ordinary shares represented by these options is 116,333. The filing indicates Zukiwski is an officer of the company, but not a director or a ten percent owner. The document type is Form 3, indicating a statement of initial beneficial ownership.