X0306 4 2020-02-13 0 0001396536 DUOS TECHNOLOGIES GROUP, INC. DUOT 0001781002 Bleichroeder LP 1345 AVENUE OF THE AMERICAS 47TH FLOOR NEW YORK NY 10105 0 0 1 0 Common Stock 2020-02-13 4 P 0 166600 6 A 496958 I See footnote Common Stock 2020-02-13 4 P 0 1200 5.9787 A 498158 I See footnote Common Stock 2020-02-14 4 P 0 100 5.975 A 498258 I See footnote The reported price in Column 4 is a weighted average price. These shares were bought in multiple transactions. Prices ranged from $5.97 to $5.98 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote. The shares of Common Stock reported herein are indirectly beneficially owned by Bleichroeder, LP ("Bleichroeder"), a Delaware limited partnership, an investment adviser registered under the Investment Advisers Act of 1940. Bleichroeder is the registered investment adviser to Biotechnology Master Fund, Ltd. as well as to 21 April Fund, LP and 21 April Fund, Ltd. (collectively, the "Funds"). The shares of Common Stock reported herein are directly held by the Funds. Bleichroeder disclaims beneficial ownership of the shares of Common Stock held directly by the Funds except to the extent, if any, of its pecuniary interest therein, and this report shall not be deemed an admission that Bleichroeder is the beneficial owner of any such securities. Michael M. Kellen, Chairman and CO-CEO of Bleichroeder LP 2020-02-14