Compass Therapeutics CAO Neil Lerner Acquires 15,000 Shares at $1.89

Neil Lerner, Chief Accounting Officer of Compass Therapeutics, Inc., acquired 15,000 shares of common stock on April 29, 2026, at a price of $1.89 per share. Following this transaction, Lerner now holds 397,500 shares, including 62,500 unvested restricted stock units (RSUs) granted on January 2, 2026. The RSUs vest in four equal annual installments beginning January 2, 2027, subject to service-based conditions. This Form 4 filing reports an open market purchase by a company officer, indicating insider buying activity. The transaction represents a direct ownership position (D) and was filed timely as required by Section 16 regulations. The acquisition suggests confidence in the company's prospects by a key financial executive.