Ainos Director Chun-Jung Tsai Acquires 330,000 Shares and Exercises RSUs

This Form 4 filing reports that Chun-Jung Tsai, a director of Ainos, Inc., acquired 330,000 shares of common stock on April 15, 2026, at a price of $1.61 per share, increasing his total holdings to 686,999 shares. The filing also details the grant and vesting of 330,000 restricted stock units (RSUs) under the company's 2023 Stock Incentive Plan on the same date. The RSUs were granted (transaction code A) and then converted to common stock (transaction code C), resulting in the director receiving the shares. This transaction represents significant insider buying activity by a company director, indicating confidence in the company's prospects. The director now holds a substantial position in Ainos common stock following these transactions.