# Eisai

Eisai is a Corporate Investor based in Tokyo, Japan.

## Overview

- **Organization type:** Corporate Investor
- **Headquarters:** Tokyo, Japan
- **Region:** Asia
- **Address:** 4-6-10 Koishikawa, Bunkyo-ku, Tokyo 112-8088, Japan
- **Founded:** 1941
- **Assets under management:** Undisclosed
- **Website:** eisai.co.jp
- **LinkedIn:** https://www.linkedin.com/company/eisaiglobal
- **Wikidata:** Q903384

## Regulatory record

- **Reports private funds:** No

## About

Eisai is a pharmaceutical company focused on oncology and neurology. It develops therapies for dementia-related and neurodegenerative diseases. Founded in 1941, Eisai operates in Tokyo, Japan, with capabilities in drug discovery, development, and marketing.

## Sectors

- Digital Health
- AI/ML
- Enterprise Software

## Offices

- Nutley, New Jersey, United States
- Cambridge, Massachusetts, United States
- Hatfield, Hertfordshire, United Kingdom

## People

- Haruo Naito — CEO and Representative Corporate Officer
- Keisuke Naito — Executive Vice President and Chief Ecosystem Officer

## Questions

### Who runs investment decisions at Eisai Innovation?

Keisuke Naito, Executive Vice President and Chief Ecosystem Officer, oversees Eisai's external innovation and venture activities. He reports to CEO Haruo Naito, his father, who has led the company since 1992. The dual family-operator structure means Eisai's venture decisions are made by the same executives who oversee the company's $5.4 billion pharmaceutical business, not by an independent fund manager.

### How does Eisai Innovation source its deals?

Eisai sources through its global research hubs — the G2D2 lab in Cambridge, Massachusetts, the EMEA Knowledge Centre in Hatfield, UK, and its Tokyo headquarters — as well as its membership in Japan's AMED and Haruo Naito's World Economic Forum relationships. The firm publishes academic research and clinical data aggressively, which creates inbound flow from founders working on Alzheimer's, Parkinson's, and other neurology targets that align with Eisai's therapeutic pipeline.

### What sectors does Eisai Innovation explicitly avoid?

Eisai Innovation does not invest in therapeutic areas outside its parent company's focus — you will not see medical devices, surgical robotics, or general healthcare services. They also avoid asset classes unrelated to their core mission; there is no real estate, infrastructure, or crossover hedge fund activity. The venture mandate is cleanly restricted to neurology, oncology, and the digital-tool and AI/drug-discovery platforms that accelerate those pipelines.

### How is Eisai's Alzheimer's franchise related to its venture strategy?

The Leqembi approval in 2023 validated Eisai's three-decade bet on amyloid-targeting therapies, and the company now uses its Alzheimer's clinical infrastructure as a magnet for early-stage biotech. Startups working on biomarkers, patient screening, or disease-modifying mechanisms can gain access to Eisai's patient cohorts and trial sites — a competitive advantage that pure-play VCs cannot offer and that Eisai actively markets to biotech founders.

## Related profiles

- [EirGrid Pension Fund](https://altss.com/profile/eirgrid-pension-fund)
- [Eisai Corporate Pension Fund](https://altss.com/profile/eisai-corporate-pension-fund)

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Last updated: 2026-06-03T20:00:00.000Z

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