X0306 4 2021-11-15 0 0001851657 Vaxxinity, Inc. VAXX 0001206793 BLATT GREGORY R C/O VAXXINITY, INC 1717 MAIN ST, STE 3388 DALLAS TX 75201 1 0 0 0 Class A common stock 2021-11-15 4 C 0 622516 A 622516 I Held by Blatt Family Investments LLC Class A common stock 2021-11-15 4 C 0 53553 A 53553 I Held by The Gregory R. Blatt 2020 Annuity Trust IX Class A common stock 2021-11-15 4 C 0 160668 A 160668 I Held by The Gregory R. Blatt 2020 Annuity Trust III Class A common stock 2021-11-15 4 P 0 76923 0.00 A 76923 I Held by Bald Eagle IV LLC Series A preferred stock 2021-11-15 4 C 0 968636 D Class A common stock 622516 0 I Held by Blatt Family Investments LLC Series A preferred stock 2021-11-15 4 C 0 83329 D Class A common stock 53553 0 I Held by The Gregory R. Blatt 2020 Annuity Trust IX Series B preferred stock 2021-11-15 4 C 0 250000 D Class A common stock 160668 0 I Held by The Gregory R. Blatt 2020 Annuity Trust III Shares of preferred stock automatically converted into shares of Class A common stock upon closing of the Issuer's initial public offering based on a conversion rate of approximately 0.643 shares of Class A common stock for each share of preferred stock. These securities are held by Blatt Family Investments LLC ("BFI"). The Reporting Person is the investment manager and a member of BFI, as well as the investment advisor of The Gregory R. Blatt 2018 GST Trust, which is also a member of BFI. The Reporting Person disclaims beneficial ownership, within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended, or otherwise of such portion of the securities held by BFI in which the Reporting Person has no pecuniary interest. These securities are held by The Gregory R. Blatt 2020 Annuity Trust IX. The Reporting Person is the sole trustee and the investment advisor with all investment authority. These securities are held by The Gregory R. Blatt 2020 Annuity Trust III. The Reporting Person is the sole trustee and the investment advisor with all investment authority. The Reporting Person beneficially owns 76,923 shares of Class A common stock purchased by Bald Eagle IV LLC. Held by Bald Eagle IV LLC. The Reporting Person is a member of Bald Eagle IV LLC. The Reporting Person disclaims beneficial ownership, within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended, or otherwise of all securities held by Bald Eagle IV LLC in which the Reporting Person has no pecuniary interest. /s/ Rene Paula, attorney-in-fact for Gregory R. Blatt 2021-11-15