Power of Attorney for David Berry of Oaktree Acquisition Corp. III Life Sciences

David Berry, a director of Oaktree Acquisition Corp. III Life Sciences, has executed a Power of Attorney appointing Zaid Pardesi and Aman Kumar as his attorneys-in-fact. This authorization allows them to act on his behalf in matters related to filings under Sections 13 and 16 of the Securities Exchange Act of 1934. Specifically, they are empowered to execute and file Schedule 13D, Schedule 13G, Forms 3, 4, and 5, and any related amendments or supplements. The Power of Attorney remains in effect until Berry is no longer required to make such filings, unless revoked earlier in writing. This document was executed on October 22, 2025.