POWER OF ATTORNEY
       The undersigned, as a Section 16 reporting person of Omeros Corporation
 (the "Company"), hereby constitutes and appoints Peter B. Cancelmo, Gregory A.
 Demopulos, M.D., and Covington & Burling LLP, as outside counsel to the
 Company,  and each of them individually, as his or her true lawful
 attorney in-fact and  agent with full power of substitution, for him or
 her in any and all capacities,
 to:
1. prepare, complete and execute in the undersigned's name and on his
 or her  behalf, Forms ID, 3, 4 and 5, including all amendments thereto,
 as well as any  other documents as the attorney-in-fact shall determine
 to be necessary or  appropriate to obtain access codes and passwords and
 make electronic filings with  the United States Securities and Exchange
 Commission (the "Commission") under  Section 16(a) of the Securities
 Exchange Act of 1934, as amended (the  "Exchange Act"), and the rules
 and regulations promulgated thereunder, or  any successor laws and
 regulations, as a consequence of the  undersigned's  ownership,
 acquisition or disposition of securities of the Company;
2. perform any and all acts for and on behalf of the undersigned that
 may be  necessary or appropriate in order to file such forms with the
 Commission,  any stock exchange or similar authority and such other
 person or agency as the  attorney-in-fact shall deem appropriate; and
3. take any other action of any type whatsoever in connection with
 the foregoing  which, in the opinion of the attorney-in-fact, may be
 of benefit to, in the best  interest of, or legally required by, the
 undersigned, it being understood that  the documents executed by the
attorney-in-fact on behalf of the undersigned  pursuant to this Power
 of Attorney shall be in such form and contain such terms and conditions
as the attorney-in-fact may approve in such attorney-in-fact's discretion.
       The undersigned hereby grants to each of the foregoing
attorneys-in-fact full power  and authority to do and perform any and
every act and thing whatsoever requisite, necessary or proper to be
done in the exercise of any of the rights and powers herein granted,
as fully to all intents and purposes as the undersigned might or could do
if  personally present, with full power of substitution or revocation,
and hereby ratifies and confirms all that said attorneys-in-fact,
or the substitute or substitutes of said attorneys-in-fact, shall
lawfully do or cause to be done by virtue of this Power of Attorney
and the rights and powers herein granted. The undersigned acknowledges
that the foregoing attorneys-in-fact, in serving in such capacity
at the request of the undersigned, are not assuming, nor is the Company
assuming, any of the undersigned's responsibilities to comply with
Section 16(a) of the Exchange Act.
       This Power of Attorney shall remain in full force and effect
until the undersigned is no longer required to file Forms 3, 4 and 5
with respect to the undersigned's holdings of and transactions in
securities issued by the Company, unless earlier revoked by the undersigned
in a signed writing delivered to the Company and the foregoing
attorneys-in-fact.
       IN WITNESS WHEREOF, the undersigned has caused this Power of
Attorney to be executed as of June 26, 2024.

Signature: /s/ David J. Borges
	David J. Borges