--- title: "Eisai Co. (4523) stock listing, news and investor profile" url: "https://aibio.space/companies/eisai/" publisher: "aibio.space (Biotech Investor Relations News)" summary: "Eisai Co., Ltd. (TSE: 4523), Japan. The directory classifies it as Pharmaceuticals. Listing facts, related biotech companies and news on aibio.space." --- 4523 Eisai Co., Ltd. TSE · Japan # Eisai Co. (4523) news Eisai Co., Ltd. is a public biotech or pharmaceutical company listed on TSE under the ticker 4523, recorded under Japan. The directory classifies it as Pharmaceuticals. aibio.space tracks 2,820 public biotech companies worldwide and publishes investor news on them. ## Latest Eisai Co. news We have not published a story on Eisai Co. yet. When there is news, it will appear here. ## Eisai Co. at a glance - **Ticker**: 4523 - **Listing**: TSE - **Country**: Japan ### Related companies - [Rohto Pharmaceutical Co.](https://aibio.space/companies/rohto-pharmaceutical/) TSE: 4527 - [SUSMED,Inc.](https://aibio.space/companies/susmed/) TSE: 4263 - [Cyfuse Biomedical K.K.](https://aibio.space/companies/cyfuse-biomedical-k-k/) TSE: 4892 - [Symbio Pharmaceuticals](https://aibio.space/companies/symbio-pharmaceuticals/) TSE: 4582 - [SanBio Co.](https://aibio.space/companies/sanbio/) TSE: 4592 - [Elan](https://aibio.space/companies/elan/) TSE: 6099 - [Kubota Pharmaceutical Holdings Co.](https://aibio.space/companies/kubota-pharmaceutical/) TSE: 4596 - [Morishita Jintan Co.](https://aibio.space/companies/morishita-jintan/) TSE: 4524 ### Also on TSE - [D.Western Therapeutics Institute](https://aibio.space/companies/d-western-therapeutics-institute/) 4576 - [Wakamoto Pharmaceutical Co.](https://aibio.space/companies/wakamoto-pharmaceutical/) 4512 - [Peptidream](https://aibio.space/companies/peptidream/) 4587 - [PRISM BioLab Co. LTD](https://aibio.space/companies/prism-biolab/) 206A - [CanBas Co.](https://aibio.space/companies/canbas/) 4575 - [Tsumura & Co.](https://aibio.space/companies/tsumura/) 4540 ## Questions about Eisai Co. What is the ticker symbol of Eisai Co.? Eisai Co., Ltd. trades under the ticker 4523 on TSE. Where is Eisai Co. listed? Eisai Co., Ltd. is listed on TSE. Which country or territory is Eisai Co. listed under? Our directory records Eisai Co., Ltd. under Japan. What does Eisai Co. do? Our directory classifies Eisai Co., Ltd. as: Pharmaceuticals. This is a directory classification, not a description of the pipeline. What is the ISIN of Eisai Co.? The ISIN recorded for Eisai Co., Ltd. is JP3160400002. Does aibio.space cover Eisai Co.? aibio.space lists Eisai Co., Ltd. among 2,820 public biotech companies and publishes its news here as stories appear. Which companies are similar to Eisai Co.? Companies in our directory listed in the same country and business area as Eisai Co.: Rohto Pharmaceutical Co., SUSMED,Inc., Cyfuse Biomedical K.K., Symbio Pharmaceuticals, SanBio Co., Elan. ## Investor discussion: Eisai Co. Members talk about Eisai Co. (4523). Reader posts, not aibio.space reporting, and not investment advice. Rules 1. **Securities violations are strictly forbidden.** No market manipulation, no pump-and-dump, no false or misleading statements, and no inside information. 2. **Say whether you hold the stock.** Every post states long, short or no position. 3. **No paid or sponsored posts.** Do not post for anyone who pays or rewards you. 4. **No buy or sell calls and no price targets.** 5. **No accusations of crime or fraud against named people** unless you link a court filing or a regulator's release that makes them. 6. **No personal details and no spam.** No links at all for your first 7 days as a member. Posts that break the rules may be deleted without notice, and the account restricted or closed. See the [terms](https://aibio.space/terms/#discussion) and the [privacy policy](https://aibio.space/privacy/#discussion). ## Press releases Headlines of Eisai Co.'s own announcements, newest first. Each opens the full release on the newswire that carried it. 1. 2026-10-29 PR Newswire [Eisai to Present New Five-Year Lecanemab Data and Real-World Alzheimer's Disease Research at the 19th Clinical Trials on Alzheimer's Disease (CTAD) Conference](https://www.prnewswire.com/news-releases/eisai-to-present-new-five-year-lecanemab-data-and-real-world-alzheimers-disease-research-at-the-19th-clinical-trials-on-alzheimers-disease-ctad-conference-302923521.html) ## Stock chart Price chart and quote supplied by TradingView, delayed as the exchange requires. It loads only if you choose to show it. Information only, not investment advice. [Open TSE:4523 on TradingView](https://www.tradingview.com/symbols/TSE-4523/). ## Listing details Eisai Co., Ltd. is a public biotech or pharmaceutical company listed on TSE under the ticker 4523, recorded under Japan. The directory classifies it as Pharmaceuticals. aibio.space tracks 2,820 public biotech companies worldwide and publishes investor news on them. - **Company**: Eisai Co., Ltd. - **Ticker**: 4523 - **Listing**: TSE - **Country or territory**: Japan - **Business scope**: Pharmaceuticals - **ISIN**: JP3160400002 - **Last quote in directory**: 2026-10-22 - **Directory source**: [Listing page](https://www.tradingview.com/symbols/TSE-4523/) Listing facts come from our company directory, researched on October 22, 2026. A listing record does not certify that a security currently trades. [Tell us about a change](https://aibio.space/reputation/#update). Work at this company? [Claim this page](https://aibio.space/claim/). Published and maintained by aibio.space. Not investment advice. [How we work](https://aibio.space/disclosures/). Who manages this page **This page is managed by aibio.space.** The company does not run, edit or pay for this page. News, desk views and Investor Ranks are written and managed independently by aibio.space under our editorial and analytical judgment. Opinion only, not investment advice. [How we work](https://aibio.space/disclosures/#paid) · [Terms](https://aibio.space/terms/#news) · [Request a correction](https://aibio.space/reputation/#update) --- Source page: https://aibio.space/companies/eisai/. Facts in aibio.space stories are checked against company filings and releases; opinion is labelled. Cite as: aibio.space, "Eisai Co. (4523) stock listing, news and investor profile", 2026-10-31, https://aibio.space/companies/eisai/