X0206 3 2019-02-09 1 0001285819 OMEROS CORP OMER 0001767077 Bumol Thomas F. C/O OMEROS CORPORATION 201 ELLIOTT AVENUE WEST SEATTLE WA 98119 1 0 0 0 No securities are beneficially owned. Power of Attorney attached as an Exhibit. /s/ Marcia S. Kelbon, attorney-in-fact on behalf of Thomas Bumol 2019-02-12