9 November 2025 Co-founder and Board Member of a Riyadh Valley Company Portfolio Companies Wins the Nobel Prize

The Nobel Committee announced that Dr. Shimon Sakaguchi has been awarded the 2025 Nobel Prize in Physiology or Medicine, in recognition of his groundbreaking discoveries in understanding the mechanisms of peripheral immune tolerance, which are key to maintaining immune system balance.

This global achievement highlights the quality and impact of Riyadh Valley Company’s investments. Dr. Sakaguchi serves as the Co-Founder and Board Member of RegCell, one of the companies in which Riyadh Valley Company has invested through Japan’s Global Brain fund.