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What is Kyowa Kirin Co., Ltd. stock?

4151 is the ticker symbol for Kyowa Kirin Co., Ltd., listed on TSE.

Founded in 1949 and headquartered in Tokyo, Kyowa Kirin Co., Ltd. is a Pharmaceuticals: Major company in the Health technology sector.

What you'll find on this page: What is 4151 stock? What does Kyowa Kirin Co., Ltd. do? What is the development journey of Kyowa Kirin Co., Ltd.? How has the stock price of Kyowa Kirin Co., Ltd. performed?

Last updated: 2026-06-04 16:59 JST

About Kyowa Kirin Co., Ltd.

4151 real-time stock price

4151 stock price details

Quick intro

Kyowa Kirin Co., Ltd. (4151) is a Japan-based global specialty pharmaceutical company and a subsidiary of Kirin Holdings, specializing in biotechnology. Its core business focuses on developing innovative treatments in oncology, nephrology, immunology, and rare diseases, with flagship products like Crysvita and Poteligeo driving international growth.


In FY2024, the company reported revenue of ¥495.6 billion, up 12% year-on-year, although net income declined to ¥59.9 billion due to significant R&D investments and restructuring costs. For the first nine months of 2025, revenue reached ¥362.8 billion (up 18.5%), supported by strong North American sales and technology licensing.

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Basic info

NameKyowa Kirin Co., Ltd.
Stock ticker4151
Listing marketjapan
ExchangeTSE
Founded1949
HeadquartersTokyo
SectorHealth technology
IndustryPharmaceuticals: Major
CEOAbdul Mullick
Websitekyowa-kirin.co.jp
Employees (FY)5.16K
Change (1Y)−508 −8.96%
Fundamental analysis

Kyowa Kirin Co., Ltd. Business Introduction

Kyowa Kirin Co., Ltd. (TSE: 4151) is a global specialty pharmaceutical company headquartered in Japan, dedicated to developing innovative medical solutions, particularly in oncology, nephrology, central nervous system (CNS), and immunology. As a core subsidiary of the Kirin Holdings Group, it harnesses advanced biotechnology to meet unmet medical needs.

Business Summary

Kyowa Kirin operates as an R&D-driven organization, evolving from a domestic Japanese firm into a "Global Specialty Pharmaceutical" leader. The company is recognized for its proprietary antibody technology platforms and its capability to commercialize first-in-class biologics. By fiscal year 2024/2025, it has significantly expanded its presence in North America and EMEA (Europe, Middle East, and Africa), which now account for a substantial share of its total revenue.

Detailed Business Modules

1. Bone and Mineral / Nephrology: Currently the company’s primary growth engine. The flagship product, Crysvita (burosumab), is a human monoclonal antibody for treating X-linked hypophosphatemia (XLH). It has become a global blockbuster with rapid uptake in the US and Europe.
2. Oncology: Kyowa Kirin targets hematologic toxicities and rare cancers. Key products include Poteligeo (mogamulizumab) for cutaneous T-cell lymphoma and G-Lasta/Neulasta for chemotherapy-induced neutropenia.
3. Immunology and Allergy: Leveraging its POTELLIGENT® technology, the company develops therapies for severe asthma and other inflammatory diseases.
4. Central Nervous System (CNS): The company markets Nourianz (istradefylline), an adenosine A2A receptor antagonist used as an adjunct to levodopa/carbidopa in adult Parkinson’s patients experiencing "off" episodes.

Commercial Model Characteristics

Technology Licensing & Royalties: A distinctive feature of Kyowa Kirin’s model is licensing its proprietary antibody technologies (such as POTELLIGENT®) to global pharmaceutical leaders (e.g., AstraZeneca, Amgen), generating high-margin royalty income.
Global Integrated Supply Chain: The company oversees the entire process from discovery and clinical development to advanced biologics manufacturing and worldwide commercial distribution.

Core Competitive Moat

Proprietary Antibody Engineering: The POTELLIGENT® platform enhances Antibody-Dependent Cellular Cytotoxicity (ADCC), significantly increasing antibody potency. This technical advantage is challenging for competitors to replicate without licensing.
Dominance in Rare Bone Diseases: Through Crysvita, the company has secured a "first-mover" advantage in niche indications, creating high switching costs for patients and healthcare providers.

Latest Strategic Layout (2024-2025)

Under its "2021-2025 Medium-Term Business Plan," Kyowa Kirin has shifted toward a "Life-changing Strategy." A key milestone was the 2024 acquisition of Orchard Therapeutics, a leader in hematopoietic stem cell gene therapy. This move marks Kyowa Kirin’s aggressive entry into the Cell and Gene Therapy (CGT) arena, aiming to progress beyond chronic treatments toward potential "cures" for rare genetic disorders.

Kyowa Kirin Co., Ltd. Development History

Kyowa Kirin’s history reflects evolution through strategic mergers and a steadfast commitment to biotechnological innovation.

Development Phases

Phase 1: Foundations and Fermentation (1940s - 1980s)
Kyowa Hakko Kogyo was founded in 1949. Initially focused on chemicals and fermentation (producing monosodium glutamate and lysine), the company leveraged its microbiology expertise to transition into pharmaceuticals, launching various antibiotics and anticancer drugs.

Phase 2: The Merger and Strategic Pivot (2008 - 2012)
In 2008, Kyowa Hakko Kogyo merged with Kirin Pharma (the pharmaceutical division of Kirin Holdings) to form Kyowa Hakko Kirin. This merger combined Kyowa’s chemical synthesis strengths with Kirin’s world-class antibody technology, creating a biotech-focused entity.

Phase 3: Global Expansion and Blockbuster Success (2013 - 2020)
The company rebranded as Kyowa Kirin in 2019 to unify its global identity. This period saw FDA and EC approvals for Crysvita and Poteligeo. The company shifted from a Japan-centric model to establishing autonomous headquarters in the US and UK.

Phase 4: Next-Generation Modalities (2021 - Present)
The current era is characterized by integrating digital health and advanced modalities. With the acquisition of Orchard Therapeutics (completed in early 2024), the company added Libmeldy (a gene therapy for MLD) to its portfolio, positioning itself at the forefront of genetic medicine.

Success Factors and Challenges

Success Factors: The 2008 merger is regarded as a textbook success in the Japanese pharmaceutical industry, providing the scale needed for global R&D. Their focus on "difficult-to-make" biologics helped them avoid the "patent cliff" faced by small-molecule manufacturers.
Challenges: The company initially faced challenges entering the US market independently, relying heavily on partners like Amgen. Building its own global commercial infrastructure was costly and time-consuming, with high returns only recently realized.

Industry Introduction

Kyowa Kirin operates within the Specialty Pharmaceutical and Biotechnology sector, characterized by high R&D intensity, strict regulatory environments, and high profit margins for successful innovators.

Industry Trends and Catalysts

1. Shift to Precision Medicine: The industry is moving away from "one-size-fits-all" drugs toward targeted biologics and gene therapies tailored to specific genetic profiles.
2. Orphan Drug Incentives: Governments in the US (Orphan Drug Act) and Europe offer tax credits and extended market exclusivity for drugs treating rare diseases, a key focus area for Kyowa Kirin.
3. Bioprocessing Innovation: As patents for first-generation biologics expire, efficient manufacturing of complex antibodies (an area where Kyowa Kirin excels) becomes a major competitive advantage.

Competitive Landscape

Kyowa Kirin competes with both diversified global giants and specialized biotech firms:

Company Name Primary Competition Area Market Position
Amgen Biologics & Nephrology Global leader; former partner and current competitor in some regions.
Takeda Pharmaceutical Rare Diseases & Oncology Largest Japanese pharma; competes for talent and R&D pipeline in Japan.
Alexion (AstraZeneca) Rare Diseases Strong overlap in high-cost, low-volume "orphan" indications.
Chugai (Roche Group) Antibody Technology Primary rival in Japan for advanced antibody engineering.

Industry Status and Market Data

Kyowa Kirin ranks among the top 10 pharmaceutical companies in Japan by market capitalization and revenue. According to recent 2024 financial reports, the company’s revenue growth has consistently outpaced the Japanese industry average, largely driven by overseas sales of Crysvita, which reached record levels in the 2023-2024 fiscal year.

Key Industry Indicators (Approx. 2024 Estimates):
Global Biopharmaceutical Market: Approximately $600 Billion+ (CAGR of 8-10%)
Kyowa Kirin R&D Ratio: Typically reinvests 18-20% of revenue into R&D, significantly higher than the general manufacturing sector, reflecting its "Specialty" nature.

In summary, Kyowa Kirin has successfully transformed from a domestic Japanese player into a global biotech innovator. Its strategic focus on rare diseases and advanced antibody technology, supported by the financial strength of the Kirin Group, positions it as a resilient competitor in the dynamic global healthcare market.

Financial data

Sources: Kyowa Kirin Co., Ltd. earnings data, TSE, and TradingView

Financial analysis

Kyowa Kirin Co., Ltd. Financial Health Score

Based on the latest financial disclosures for FY2024 and the performance in Q1 2026 (disclosed in May 2026), Kyowa Kirin maintains a robust financial profile characterized by record revenues and strong liquidity, though profitability has faced temporary pressure from strategic restructuring and increased R&D investments.

Metric Category Score (40-100) Rating Key Rationale (Data from FY2024/FY2025/Q1 2026)
Solvency & Stability 92 ⭐️⭐️⭐️⭐️⭐️ Equity ratio remains high at 78.5% (as of Sept 2025). Total assets exceed 1 trillion yen.
Revenue Growth 85 ⭐️⭐️⭐️⭐️ FY2024 revenue reached a record 495.6 billion yen (+12.1% YoY). Q1 2026 revenue rose 13.1%.
Profitability 70 ⭐️⭐️⭐️ Core operating profit for FY2024 fell 4.3% to 91.9 billion yen due to 44% surge in R&D expenses.
Dividend Quality 88 ⭐️⭐️⭐️⭐️ Stable dividend policy; FY2026 forecast maintained at 70 yen per share.
Overall Health 84 ⭐️⭐️⭐️⭐️ Strong balance sheet with a strategic shift toward global specialty pharma.

Kyowa Kirin Co., Ltd. Development Potential

1. Vision 2030 and Beyond: Strategic Roadmap

Kyowa Kirin has unveiled its "Vision 2030" strategy, aiming to transform into a Global Specialty Pharmaceutical company. The roadmap sets aggressive targets: acquiring more than 20 new pipeline assets and securing over 10 US FDA approvals by the early 2030s. The company is pivoting away from domestic reliance toward high-margin global markets (North America and EMEA), with overseas revenue now exceeding 70% of total sales.

2. High-Growth Catalysts: Global Strategic Products

The company’s growth is anchored by its flagship "Global Strategic Products":
• Crysvita: Continues to penetrate the adult XLH market, showing double-digit growth in North America (+10% in late 2025).
• Poteligeo: Expanding market share for mycosis fungoides and Sézary syndrome, with Q1 2026 revenue up 23.2%.
• Libmeldy/Lenmeldy: Following the acquisition of Orchard Therapeutics, this gene therapy for MLD represents a new modality catalyst, targeting 10 billion yen in near-term revenue.

3. R&D Pipeline and New Modalities

The company is heavily investing in next-generation therapies:
• Rocatinlimab (KHK4083): A potentially best-in-class monoclonal antibody for atopic dermatitis; the company recently regained control of the program to maximize long-term commercial value.
• Ziftomenib: An oral small molecule menin inhibitor for AML, currently under FDA Priority Review with a PDUFA date of November 30, 2025. This is a critical near-term catalyst for the oncology franchise.

4. New Business Catalysts

The integration of Orchard Therapeutics (completed Jan 2024) provides Kyowa Kirin with a world-leading Hematopoietic Stem Cell (HSC) gene therapy platform. This acquisition allows the company to move into ultra-rare genetic diseases and explore gene therapy applications in broader areas like immunology and oncology.

Kyowa Kirin Co., Ltd. Pros and Risks

Upside (Pros)

• Strong Market Position in Rare Diseases: Leadership in niche markets like X-linked hypophosphatemia (XLH) provides a steady, high-margin revenue stream.
• Robust Financial Position: A net cash position and a high equity ratio provide the "dry powder" needed for further M&A and R&D acceleration.
• Successful Global Pivot: Rapidly increasing revenue contribution from the US and Europe offsets the pricing pressures in the Japanese domestic market.
• AI and Digital Transformation: Strategic implementation of AI in drug discovery and patient identification is expected to improve R&D efficiency and commercial targeting.

Downside (Risks)

• Concentration Risk: Heavy reliance on Crysvita for a significant portion of total revenue makes the company vulnerable to potential biosimilar competition or clinical setbacks in new indications.
• R&D Execution Risks: The 44% increase in R&D spending (exceeding 100 billion yen) puts pressure on short-term margins. Any failure in Phase 3 trials (e.g., rocatinlimab) would be a significant blow.
• Regulatory and Pricing Pressure: Ongoing NHI price cuts in Japan and potential drug pricing reforms in the US (Inflation Reduction Act) could impact long-term profitability.
• Integration Challenges: Successfully scaling the gene therapy business acquired from Orchard Therapeutics requires significant capital and specialized infrastructure.

Analyst insights

How do Analysts View Kyowa Kirin Co., Ltd. and the 4151 Stock?

Heading into mid-2024 and looking toward 2025, market sentiment regarding Kyowa Kirin Co., Ltd. (TYO: 4151) is characterized by a "cautious optimism" centered on its portfolio transformation. As the company shifts from its heavy reliance on established blockbuster drugs toward a pipeline of next-generation biologics and gene therapies, analysts are closely monitoring its ability to offset patent cliffs.

Following the recent acquisition of Orchard Therapeutics and strategic updates in their FY2024 guidance, here is the detailed breakdown of how mainstream analysts view the company:

1. Institutional Core Perspectives on the Company

Aggressive Global M&A Strategy: Most analysts, including those from J.P. Morgan and Mizuho Securities, view the $387 million acquisition of Orchard Therapeutics as a bold move into the Gene Therapy space. This is seen as a vital step in diversifying the company’s revenue streams beyond its core bone/joint and oncology segments.
The "Crysvita" Plateau and Lifecycle Management: A primary focus for analysts is Crysvita (for X-linked hypophosphatemia). While it remains a massive cash cow, providing record revenue in 2023, analysts are debating its growth ceiling. There is a consensus that Kyowa Kirin must successfully maximize the lifecycle of KHK7580 and other late-stage candidates to sustain growth as royalty structures evolve.
Focus on Specialty Pharma Transformation: Wall Street and Tokyo-based analysts generally praise the company’s high R&D-to-revenue ratio. The company is no longer viewed as a traditional domestic Japanese pharma firm but as a global "Specialty Pharmaceutical" player with a highly efficient monoclonal antibody technology platform.

2. Stock Ratings and Target Prices

As of the latest Q1 2024 reporting cycle, the market consensus for 4151.T remains a "Hold" to "Overweight":
Rating Distribution: Among approximately 12 leading analysts covering the stock, roughly 55% maintain a "Buy" or "Outperform" rating, while 40% suggest a "Hold/Neutral" position. Very few analysts currently recommend a "Sell," citing the company's strong balance sheet and net-cash position.
Price Targets (Updated May 2024):
Average Target Price: Approximately ¥3,100 - ¥3,350 (representing a potential upside of 15-20% from the current trading range of ¥2,600 - ¥2,800).
Optimistic Outlook: Some domestic brokerage firms have set targets as high as ¥3,800, banking on the faster-than-expected integration of the gene therapy pipeline and higher-than-forecasted U.S. sales for its core products.
Conservative Outlook: More cautious institutions (such as Goldman Sachs Japan) keep their estimates closer to ¥2,750, citing risks associated with the high costs of global clinical trials.

3. Analyst-Identified Risk Factors (The Bear Case)

Despite the strong fundamentals, analysts highlight several headwinds that could suppress the stock price:
R&D Setbacks and Clinical Trial Risk: The pharmaceutical industry is inherently risky. Analysts point to the potential for delays or failures in Phase III trials for new immunology candidates, which could leave a gap in the 2026–2028 earnings window.
Currency Volatility: Since a significant portion of Kyowa Kirin’s revenue (especially from Crysvita) is USD-denominated, the recent volatility of the Japanese Yen (JPY) significantly impacts reported earnings. Analysts warn that a sudden strengthening of the Yen could lead to downward revisions in profit forecasts.
Integration of Acquisitions: The market remains watchful of the "Orchard" integration. If the commercialization of gene therapies like Lenmeldy (at its high price point) faces hurdles in European or U.S. markets, it could drag on the company’s operating margins in the short term.

Summary

The prevailing view on Kyowa Kirin among analysts is that it is a stable, high-quality defensive stock with significant growth "lottery tickets" in its gene therapy pipeline. While the stock may face short-term pressure due to heavy R&D spending and shifting royalty income, the majority of analysts believe the company's transition into a global specialty leader is well-on-track, making it a preferred pick for investors seeking exposure to Japanese healthcare innovation.

Further research

Kyowa Kirin Co., Ltd. (4151) Frequently Asked Questions

What are the key investment highlights for Kyowa Kirin Co., Ltd., and who are its primary competitors?

Kyowa Kirin is a global specialty pharmaceutical company headquartered in Japan, focusing on core therapeutic areas including Oncology, Nephrology, Central Nervous System, and Immunology. A major investment highlight is its successful global expansion driven by flagship products: Crysvita (for X-linked hypophosphatemia) and Poteligeo. The company boasts a strong R&D pipeline leveraging unique antibody technology.
Primary global competitors include leading pharmaceutical companies such as Amgen, AstraZeneca, and Roche, alongside domestic Japanese peers like Takeda Pharmaceutical and Astellas Pharma.

Are the latest financial results for Kyowa Kirin healthy? What are the revenue, net profit, and debt levels?

Based on the financial results for the fiscal year ended December 31, 2023, and the first quarter of 2024, Kyowa Kirin maintains a robust balance sheet.
For FY2023, the company reported revenue of 442.5 billion JPY, marking an approximate 11% year-on-year increase. Net profit attributable to owners of the parent reached 81.2 billion JPY.
The company sustains a low debt-to-equity ratio and a high equity ratio (around 80%), reflecting a very healthy financial structure with substantial cash reserves to support future R&D and strategic acquisitions, such as the recent purchase of Orchard Therapeutics.

Is the current valuation of 4151 stock high? How do the P/E and P/B ratios compare to the industry?

As of mid-2024, Kyowa Kirin (4151) typically trades at a Price-to-Earnings (P/E) ratio ranging from 18x to 22x, generally in line with or slightly below the global specialty biopharmaceutical sector average. Its Price-to-Book (P/B) ratio usually ranges between 1.5x and 1.8x.
Compared to the broader Japanese pharmaceutical index, Kyowa Kirin is often regarded as a growth-oriented stock due to its high overseas sales ratio (over 60%), which can justify a modest premium relative to domestically focused peers.

How has the stock price performed over the past three months and year? Has it outperformed its peers?

Over the past twelve months, Kyowa Kirin's stock experienced volatility linked to patent cliff concerns for older products and clinical trial updates. While it generally tracked the TOPIX Pharmaceutical Index, it encountered some pressure in early 2024 following integration costs from new acquisitions.
Over a three-month period, the stock has stabilized as investors assess the growth potential of its new gene therapy pipeline. Compared to high-growth global biotech peers, it has demonstrated greater stability but less aggressive short-term gains.

Are there any recent industry tailwinds or headwinds affecting Kyowa Kirin?

Tailwinds: Global demand for rare disease treatments remains strong, and the weakening Yen has historically benefited Kyowa Kirin’s reported earnings from North American and European markets.
Headwinds: The Japanese pharmaceutical industry faces ongoing annual drug price revisions by the government, putting pressure on domestic margins. Additionally, the company confronts "patent cliffs" for certain key products toward the decade’s end, requiring successful launches of new pipeline candidates to sustain growth momentum.

Have large institutional investors been buying or selling 4151 stock recently?

Kyowa Kirin remains a core holding in many institutional portfolios due to its inclusion in the Nikkei 225 and MSCI Japan Index. Kirin Holdings remains the majority shareholder (owning approximately 53%), providing significant stability.
Recent filings show steady interest from global asset managers like BlackRock and The Vanguard Group, who maintain substantial passive positions. Active institutional activity has recently focused on the company’s shift toward cell and gene therapy, with some funds increasing stakes following the strategic pivot to high-value specialty medicines.

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TSE:4151 stock overview