JM, who has served on the Board for three years and has chaired the Audit and Risk Committee since 2024, has extensive expertise in transformation and governance.
Mae JM, sydd wedi gwasanaethu ar y Bwrdd am dair blynedd ac wedi cadeirio'r Pwyllgor Archwilio a Risg ers 2024, gyda arbenigeyddd helaeth mewn trawsnewid a llywodraethu.