Reiri Miura
Founding Partner, SIIF Impact Capital, Inc.
A founder whose journey weaves science, global insight, and a belief that capital can—and must—create a world where everyone can live better.
Reiri Miura’s path to co-founding SIIFIC began long before she entered the world of finance. It began in the laboratory, studying how life emerges from a single cell. With a background in developmental biology, molecular embryology, and later health policy, she trained her mind to recognise patterns, relationships, and the forces that bring complexity into coherence.
This early grounding in how systems take shape would become the intellectual backbone of her philosophy as an investor.
From science to strategy—seeing systems long before she named them
Reiri’s professional journey began at Mitsubishi Corporation in its Chemical Group, where she worked across China, Europe, and the United States before moving into venture investments and new business creation in biotech and pharmaceuticals. These early chapters—at the intersection of global markets, science, and business creation—formed the beginnings of her systems-oriented approach to innovation.
She later held senior roles at Taiho Pharmaceutical, SoftBank, and TRYT, leading initiatives across corporate planning, digital transformation, CVC formation, M&A, and organisational renewal. Alongside this work, she undertook executive study at Harvard Business School and at Oxford’s Saïd Business School, refining her expertise in CSV and impact investing and crystallising her conviction that value extends far beyond financial returns.
Across these chapters, she witnessed a universal truth:
Innovation succeeds not only through technology, but through the systems—human, organisational, societal—that enable it.
A turning point: understanding the future of value creation
In 2020, while preparing a PE-backed venture for its IPO, Reiri encountered a pivotal question:
How can a company explain not just its financial outcomes, but the social value it creates—and the pathways by which it is created?
She realised that the ability to articulate this would shape the future of capital markets.
This realisation marked her decisive shift toward impact investing.
Oxford: where theory became conviction, and conviction became direction
In early 2023, Reiri joined the Impact Investing Programme at Oxford’s Saïd Business School—a transformative experience that helped her connect years of intuition, experience, and global exposure.
In the company of impact practitioners from around the world, discussing collective impact, practical frameworks, and the architecture of sustainable capital, she found not only new knowledge but a community.
It was here that her belief took sharpened form:
impact is not an adjunct to investment—it is a discipline, a methodology, and a way of seeing the world.
This clarity became the foundation for what would come next.
Shaping a fund where economic and social value reinforce each other
In 2022, Reiri joined the Japan Social Innovation and Investment Foundation (SIIF) and led the creation of the Healthcare Vision Paper, articulating how wellness should be valued as a societal asset.
Later that year, she reunited with long-time healthcare investor Kazu Umeda. Both shared the same insight:
the next frontier of investment lies where innovation and wellbeing intersect.
Together, they co-founded SIIFIC in September 2022.
In June 2023, they launched the SIIFIC Wellness Fund.
By September, they had executed their first impact investment—transforming theory into practice within months.
A founder who frames the world through connections—both analytical and poetic
Reiri is a frequent speaker on impact investing and system mapping, helping organisations navigate complexity with clarity and empathy.
Beyond her professional life, she finds inspiration in art and photography, seeking out “the beautiful connections woven within society.” This way of seeing—intellectual yet deeply human—shapes her belief that progress emerges not just from strategy, but from stories, relationships, and the spaces where people and society meet.