X0306 4 2022-05-31 0000810509 NAVIDEA BIOPHARMACEUTICALS, INC. NAVB 0001753763 Scott John K Jr. 4995 BRADENTON AVE., SUITE 240 DUBLIN OH 43017 1 1 Common Stock 2022-05-31 4 A 0 2500 0 A 8095895 D Common Stock 10139 I By spouse and children Series G Redeemable Preferred Stock 3260 D Stock issued under the Amended and Restated 2014 Stock Incentive Plan in partial payment of monthly non-employee director fees. Issuance deferred at the request of the Reporting Person. Includes 2,639 shares of Common Stock owned by the Reporting Person's spouse and 7,500 shares of Common Stock owned by the Reporting Person's children. The Reporting Person may be deemed to have shared voting and/or dispositive power with respect to such shares. /s/ Erika L. Eves for John K. Scott, Jr. by power of attorney 2022-06-01