X0206 3 2019-06-10 0 0001285819 OMEROS CORP OMER 0001778968 Cancelmo Peter B C/O OMEROS CORPORATION 201 ELLIOTT AVENUE WEST SEATTLE WA 98119 0 1 0 0 See Remarks Common Stock 200 D Stock Option (Right to Buy) 11.85 2029-01-01 Common Stock 20000 D The option had a grant date and vesting commencement date of January 2, 2019. 25% of the total number of shares subject to the option will vest and become excisable on the 12-month anniversary of the vesting commencement date. 1/48 of the total number of shares subject to the option will vest and become excisable on each monthly anniversary thereafter, for so long as Mr. Cancelmo remains an employee of or consultant to the Company. Exhibit 24 - Power of Attorney VP, General Counsel and Corporate Secretary /s/ Peter B. Cancelmo 2019-06-11