X0609 4 2026-08-25 0 0001844417 Estrella Immunopharma, Inc. ESLA 0001996255 Liu Cheng false C/O ESTRELLA IMMUNOPHARMA, INC. 5858 HORTON STREET, SUITE 370 EMERYVILLE CA 94608 1 1 0 0 CEO 0 Common Stock, par value $0.0001 per share 2026-08-25 2026-08-25 4 M 0 100000 0.815 A 397437 D Incentive Stock Option 0.815 2026-08-25 2026-08-25 4 M 0 100000 0 A 2024-10-31 2034-10-29 Common Stock 100000 900000 D Represents the exercise price per share paid by the Reporting Person upon the exercise of the stock options reported in Table II. Reflects the 297,437 shares of Common Stock directly beneficially owned as reported on the Reporting Person's most recent Form 4, plus the 100,000 shares acquired upon the reported exercise. Represents incentive share options granted to the Reporting Person on October 30, 2024 under the Issuer's 2023 Omnibus Incentive Plan, of which twenty-five percent (25%) was immediately exercisable on the date of grant, with the remainder vesting in equal monthly installments of 1/48th of the total award on each monthly anniversary of October 30, 2024. The options were vested as to the shares exercised. Not applicable. The reported transaction is the exercise of the stock option for the exercise price set forth in Column 2. No separate consideration was paid or received for the derivative security. Vivien Chan 2026-08-26