Eisai Headquarters & Office Locations

Japanese pharmaceutical company. Headquarters: 4-6-10 Koishikawa, Tokyo, Tokyo 112-8088, Japan.

GraphIQ records this company as acquired.

Headquarters
Tokyo
Total locations · 12+ countries
28
Employees · est. 2026
10,917

Identity graph

Eisai headquarters, locations and relationships

Headquarters4-6-10 Koishikawa, Tokyo, Tokyo 112-8088, JapanOpen in Google Maps
Legal name
Eisai Co., Ltd.
Industry
Pharmaceuticals
Founded
1941
Ticker
JPX: 4523

Eisai office locations

28 total · 12+ countries
Eisai office locations: headquarters and key locations
CityState / regionCountryType
TokyoTokyoJapanHeadquarters
——CanadaOffice
PuteauxÎle-de-FranceFranceOffice
AnakapalleAndhra PradeshIndiaOffice
—West JavaIndonesiaOffice
——ItalyOffice
See all 28 locations
Parent company
No parent company recorded in GraphIQ.ai.
Competitors
Eisai competes with 12 organizations in the GraphIQ.ai identity graph.

Verified from public filings, company websites and news · Methodology

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About Eisai

Eisai (JPX: 4523) is headquartered in Tokyo, Tokyo, Japan. Founded in 1941, the company has 28 recorded locations across 12+ countries and employs approximately 10,917 people worldwide.

Where is Eisai's main office?

Eisai's main headquarters office is located at 4-6-10 Koishikawa, Tokyo, Tokyo 112-8088, Japan. This is the company's primary corporate address.

Eisai regional offices

Beyond its headquarters in Tokyo, Eisai has recorded locations in Japan, Canada, France, India, Indonesia, Italy, Norway, Singapore and 4 other countries.

Eisai contact information

The main switchboard for Eisai headquarters can be reached at +81 3 3817 3700. Official website: eisai.com.

What does Eisai do?

Eisai Co., Ltd. produces prescription drugs and medical equipment, and sells mainly to sales agents and subsidiaries. Through its subsidiary, the Company produces and sells diagnostic drugs. Eisai also markets its products through related companies in the US, Europe, and Asia. The Company also manufactures and sells foods, livestock feeds, chemical, and agrochemicals.

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  1. Target Define the market Build the account list from companies shaped like your best customers, Eisai included. Fingerprint search 
  2. Cover Plan territories Eisai's 28 locations roll up to one account, so it lands in one territory, once. Territory planning 
  3. Engage Act on timing Leadership changes, funding and M&A arrive linked to the account, not a loose headline. Signal monitoring 
  4. Convert Close on a resolved record Inbound and closed-won attach to one CRM record, with no duplicates to merge. CRM enrichment 
  5. Retain Ground every answer Customer teams and AI agents answer from the same entity, with a source and a date. AI agent data layer 
  6. Expand Find the next buyer inside Follow subsidiaries and divisions to the next team that can buy. Account expansion 

About the source

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A B2B identity graph. It resolves each organization into one verified entity and maps its parent and subsidiaries, employees, competitors and news signals. Revenue teams use it in the product; AI agents query it through the REST API and MCP server.

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Eisai: frequently asked questions

Where is Eisai headquarters?

4-6-10 Koishikawa, Tokyo, Tokyo 112-8088, Japan.

What is Eisai's phone number?

+81 3 3817 3700 (headquarters).

When was Eisai founded?

1941.

How many employees does Eisai have?

About 10,917, as of October 2026 (GraphIQ.ai estimate).

How many offices does Eisai have?

28 locations across 12+ countries, including Puteaux, Anakapalle, Bunkyo, Singapore.

Is Eisai a public company?

Yes. Eisai trades on JPX under the ticker 4523.

Questions about GraphIQ.ai

Is GraphIQ.ai a list of companies like a spreadsheet?

No. Each organization resolves to one verified entity linked to its parent, subsidiaries, people and signals, so Eisai here is the same Eisai in your CRM, territory plan and agent answers.

Where does this Eisai data come from?

Public filings, company websites and news, resolved to one entity and continuously updated.

Find more info on Eisai using GraphIQ

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From territory planning and lead scoring to handoff workflows and pipeline hygiene, our platform connects the data your GTM engine needs to run without friction. Sign up today and see how GraphIQ helps your revenue team spend less time finding information and more time acting on it.

287MOrganizations resolved
393MEmployees
2B+News and events