X0206 3 2022-07-27 0 0001878313 MAIA Biotechnology, Inc. MAIA 0001913257 Vitoc Vlad 444 WEST LAKE STREET, SUITE 1700 CHICAGO IL 60606 1 1 1 0 Chief Executive Officer Common Stock 783121 D Common Stock 200000 I See Footnote Stock Options 1.80 2028-09-30 Common Stock 700000 D Stock Options 1.80 2028-09-30 Common Stock 105000 D Stock Options 1.80 2030-04-01 Common Stock 115500 D Stock Options 1.80 2030-04-01 Common Stock 54000 D Stock Options 1.80 2030-11-02 Common Stock 405789 D Stock Options 1.80 2030-11-02 Common Stock 100000 I See Footnote Stock Options 1.80 2030-11-02 Common Stock 100000 I See Footnote Stock Options 1.80 2030-12-31 Common Stock 23695 D Stock Options 1.83 2031-04-15 Common Stock 190356 D Stock Options 1.83 2031-03-31 Common Stock 23078 D Stock Options 1.83 2031-04-15 Common Stock 219550 D Stock Options 1.83 2031-04-15 Common Stock 100000 D Stock Options 1.83 2031-06-30 Common Stock 7529 D Stock Options 1.83 2031-04-22 Common Stock 10159 I See Footnote Stock Options 1.83 2031-11-16 Common Stock 18000 I See Footnote Warrants 6.00 Common Stock 1811 D These securities are beneficially owned by Mr. Vitoc's spouse. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein. Represents an option to purchase shares of Common Stock granted pursuant to the 2018 Stock Option Plan. These options vested in 48 equal monthly installments, with a 1 year cliff, beginning on October 1, 2018. Represents an option to purchase shares of Common Stock granted pursuant to the 2018 Stock Option Plan. 35,000 of these options vested on October 1, 2018, 28,000 of the options vested on January 1, 2019, 21,000 of the options vested on April 1, 2019, 14,000 of the options vested on July 1, 2019, and 7,000 of the options vested on October 1, 2019. Represents an option to purchase shares of Common Stock granted pursuant to the 2018 Stock Option Plan. These options fully vested on April 30, 2020. Represents an option to purchase shares of Common Stock granted pursuant to the 2018 Stock Option Plan. These options fully vested on January 1, 2021. Represents an option to purchase shares of Common Stock granted pursuant to the 2020 Equity Incentive Plan. These options are fully vested on November 3, 2020. These securities are held by MAIA Laetitia Cristian Vitoc 2022 MAIA Irrevocable Trust, for the benefit of Mr. Vitoc's child, for which Mr. Vitoc's spouse serves as trustee. The reporting person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein. These securities are held by Leia Violeta Ioana Vitoc 2022 MAIA Irrevocable Trust, for the benefit of Mr. Vitoc's child, for which Mr. Vitoc's spouse serves as trustee. The reporting person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein. Represents an option to purchase shares of Common Stock granted pursuant to the 2020 Equity Incentive Plan. These options vested in ninety equal daily installments beginning on January 1, 2021. Represents an option to purchase shares of Common Stock granted pursuant to the 2020 Equity Incentive Plan. These options fully vested on May 20, 2021. Represents an option to purchase shares of Common Stock granted pursuant to the 2020 Equity Incentive Plan. These options vested in 90 equal daily installments beginning on April 1, 2021. Represents an option to purchase shares of Common Stock granted pursuant to the 2020 Equity Incentive Plan. These options fully vested on May 20, 2021. Represents an option to purchase shares of Common Stock granted pursuant to the 2020 Equity Incentive Plan. These options vest in 36 equal monthly installments beginning on January 1, 2021. Represents an option to purchase shares of Common Stock granted pursuant to the 2020 Equity Incentive Plan. These options fully vested on July 1, 2021. Represents an option to purchase shares of Common Stock granted pursuant to the 2020 Equity Incentive Plan. These options vested in seven equal monthly instalments beginning on May 31, 2021. Represents an option to purchase shares of Common Stock granted pursuant to the 2020 Equity Incentive Plan. These options vested in 12 equal monthly instalments beginning on December 16, 2021. Each Warrant became exercisable on the date of issuance of April 03, 2020, and expires on the earliest to occur of: (a) March 2, 2028; or (b) immediately prior to the closing of any change of control of the issuer. /s/ Vlad Vitoc 2022-07-27