Overview
Pharmaceutical

Chiome Bioscience Inc.

Chiome Bioscience is a Japanese biopharmaceutical venture company focused on antibody drug discovery and development targeting high unmet medical needs, including cancers such as hepatocellular carcinoma and diseases such as ALS and Alzheimer's. The company operates two core business segments: a Drug Discovery business, which generates proprietary antibody drug candidates using its ADLib® system and out-licenses them to pharmaceutical companies for upfront fees, milestones, and royalties; and a Drug Discovery Support business, which provides antibody and protein production services, affinity maturation, and related contract research services to pharma, diagnostics companies, and academic institutions. Its competitive strengths include a proprietary antibody generation technology platform (ADLib® system), an integrated capability from lead discovery through early-stage clinical development, and a specialized human network enabling efficient resource acquisition.

Market Cap
¥7.10B
US$45.3M
EV
¥5.80B
US$37.0M
Stock¥90▼-1.10%
US$1 = ¥156.80 (2026-10-23)
LTM EV/EBITDA
NM
LTM EV/EBIT
NM
LTM PER
NM
LTM PBR
4.5
x
Stock vs TOPIX (1Y, base=100)vs TOPIX ▼-52.1%pt
1001
Oct 24, 25 – Oct 23, 26StockTOPIX
1Aug 14, 26Q2 FY2026/12 earnings announced
MC → EV Bridge
7.10BUS$45.3MMarket Cap0.07BUS$0.43M+ Debt1.37BUS$8.75M− Cash0.00BUS$0.00M− Inv. Sec.5.80BUS$37.0MEV
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Performance & Balance
Revenue 5Y (¥B)
0.71US$4.54M'21/120.63US$4.02M'22/120.68US$4.35M'23/120.78US$4.97M'24/120.59US$3.78M'25/12
EBITDA 5Y (¥B)
-1.33-US$8.49M'21/12-1.26-US$8.01M'22/12-1.20-US$7.68M'23/12-1.03-US$6.56M'24/12-0.98-US$6.22M'25/12
Net Income 5Y (¥B)
-1.48-US$9.43M'21/12-1.24-US$7.92M'22/12-1.22-US$7.78M'23/12-1.02-US$6.51M'24/12-0.98-US$6.26M'25/12
Capital Structure
96%
EquityD/E 0.04xDebt
Liquidity vs Debt 5Y (¥B)▲ Net Cash
CashInv. Sec.Debt
1.79US$11.4M0.18US$1.17M'21/121.73US$11.0M0.18US$1.17M'22/121.33US$8.45M0.29US$1.86M'23/122.06US$13.2M0.28US$1.80M'24/121.21US$7.69M0.26US$1.67M'25/12
Shareholders
Top 10 hold 12.4%
1
Kenji WATANABE
3.01%
2
Fumishige EHIRA
1.44%
3
Tadashi GOSHONO
1.36%
4
Kunifumi OTA
1.21%
5
Japan Securities Finance Co.,Ltd.
1.06%
6
JPMorgan Securities Japan Co., Ltd.
0.98%
7
Rakuten Securities, Inc.
0.91%
8
Fukutaro YAMATO
0.88%
9
Shun MAKIHATA
0.82%
10
Tetsuo IISAKU
0.76%
Management
7 officers
Masamichi KOIKE
Representative Director, President
Apr 1987 Joined Kyowa Hakko Kogyo Co., Ltd. (now Kyowa Kirin Co., Ltd.) Apr 2007 President and CEO, BioWa, Inc. Apr 2011 President, Kyowa Hakko Kirin Pharma, Inc. Apr 2013 General Manager, Development Planning Department, Development Division, Kyowa Hakko Kirin Co., Ltd. (now Kyowa Kirin Co., Ltd.) Apr 2014 Unit Head, Cancer R&D Unit, R&D Division, Kyowa Hakko Kirin Co., Ltd. Apr 2018 Fellow; Unit Head, Research Function Unit, R&D Division, Kyowa Hakko Kirin Co., Ltd. Jun 2020 Chairman, Kato Memorial Bioscience Foundation Apr 2021 Unit Head, Research Unit, R&D Division, Kyowa Kirin Co., Ltd. Mar 2023 Director, the Company Mar 2025 Representative Director, President, the Company (current)
1962-10-03
Arihiko BIJODAIRA
Director and Vice President
Mar 2000 Joined Sangyo Ikusei Kenkyusho Co., Ltd. Aug 2003 Joined Pfizer Japan Inc., Pharmaceutical Sales Division Oct 2007 Joined Taiho Pharmaceutical Co., Ltd., Accounting and Overseas Business Division Jan 2013 Joined the Company; Manager, R&D Planning and Promotion Section, R&D Division Apr 2014 Director, Corporate Planning Department, the Company Jan 2016 Executive Officer, General Manager, Corporate Division, the Company Mar 2017 Director, General Manager, Corporate Strategy Office, the Company Mar 2026 Director and Vice President, the Company (current)
1978-06-05
Teruyo TAOKA
Director, General Manager, Development Division
Apr 1994 Joined Nihon Roussel K.K. Jan 1997 Joined Kyowa Hakko Kogyo Co., Ltd. (now Kyowa Kirin Co., Ltd.) Apr 2010 Group Leader, Clinical Development Group, Clinical Development Center, Kyowa Hakko Kirin Co., Ltd. Apr 2014 Office Head, Management Office, CNS R&D Unit, Kyowa Hakko Kirin Co., Ltd. Sep 2018 Joined the Company; General Manager, Clinical Development Department Jun 2020 General Manager, Development Division, the Company Mar 2023 Director, General Manager, Development Division, the Company (current)
1969-04-26
Hiroyuki KAWAI
Director
Mar 1979 Joined Kirin Brewery Company, Limited (now Kyowa Kirin Co., Ltd.) Jul 2007 Director, Executive Officer, General Manager, Development Division, Kirin Pharma Company, Limited (now Kyowa Kirin Co., Ltd.) Mar 2008 Representative Director, Executive Vice President and Executive Officer, General Manager, Manufacturing Division, Kirin Pharma Company, Limited Oct 2008 Managing Executive Officer, General Manager, Production Division, Kyowa Hakko Kirin Co., Ltd. (now Kyowa Kirin Co., Ltd.) Mar 2010 Managing Executive Officer, General Manager, Production Division, Kyowa Hakko Kirin Co., Ltd. Mar 2013 Senior Managing Executive Officer, General Manager, Production Division, Kyowa Hakko Kirin Co., Ltd. Mar 2014 Representative Director, Executive Vice President and Executive Officer, Kyowa Hakko Kirin Co., Ltd. Mar 2018 Senior Managing Director, Kato Memorial Bioscience Foundation Jun 2019 Chairman, Kato Memorial Bioscience Foundation Jun 2019 Outside Corporate Auditor, Central Glass Co., Ltd. Jul 2023 Auditor, General Incorporated Foundation BioIndustry Association (current) Mar 2025 Outside Director, the Company (current)
1954-01-17
Akiyuki FURUYA
Director (Audit and Supervisory Committee Member)
Apr 1968 Joined Daiichi Pharmaceutical Co., Ltd. (now Daiichi Sankyo Company, Limited) Apr 1999 General Manager, Pharmaceutical Development Division, Daiichi Pharmaceutical Co., Ltd. Jun 1999 Executive Officer, Daiichi Pharmaceutical Co., Ltd. Jun 2001 Director, Daiichi Pharmaceutical Co., Ltd. Jun 2003 Representative Director and President, Daiichi Radioisotope Laboratories, Ltd. (now PDR Pharma, Inc.) Jun 2007 Senior Advisor, Daiichi Radioisotope Laboratories, Ltd. Dec 2007 Representative Director and President, Persius Proteomics Inc. Jul 2016 Senior Advisor, Persius Proteomics Inc. Mar 2017 Outside Director, the Company Mar 2024 Full-time Corporate Auditor, the Company Mar 2025 Outside Director (Audit and Supervisory Committee Member), the Company (current)
1945-01-29
Yoshiyuki YAMAKAWA
Director (Audit and Supervisory Committee Member)
Apr 1986 Joined Nippon Life Insurance Company Sep 1995 General Manager, Planning Office, Innotech Corporation Sep 2001 General Manager, Corporate Planning Department, Sosei Group Corporation (now Nexera Pharma Inc.) Oct 2003 Director and Vice President, CFO, Sosei Group Corporation Oct 2004 Representative Director and Vice President, CFO, Sosei Group Corporation Dec 2006 Founded Hibiki Partners Co., Ltd.; Representative Director and President Jun 2008 Outside Director, Reprocell Inc. (current) Mar 2014 Outside Director, De Western Therapeutics Institute, Inc. (current) Mar 2019 Outside Corporate Auditor, the Company Dec 2022 Chairman of the Board, Hibiki Partners Co., Ltd. (current) Mar 2025 Outside Director (Audit and Supervisory Committee Member), the Company (current)
1962-08-21
Jiro SAKAMOTO
Director (Audit and Supervisory Committee Member)
Apr 1983 Joined Kyowa Hakko Kogyo Co., Ltd. (now Kyowa Kirin Co., Ltd.) Apr 2006 General Manager, Biochemical Planning and Administration Department, Kyowa Hakko Kogyo Co., Ltd. Jul 2007 Executive Officer, General Manager, Corporate Planning Department, Daiichi Fine Chemical Co., Ltd. Apr 2010 General Manager, Accounting Department, Kyowa Hakko Kirin Co., Ltd. (now Kyowa Kirin Co., Ltd.) Mar 2012 Executive Officer, General Manager, Corporate Planning Department, Kyowa Hakko Kirin Co., Ltd. Apr 2015 Executive Officer, General Manager, General Affairs Department, Kyowa Hakko Kirin Co., Ltd. Mar 2021 Outside Corporate Auditor, the Company Mar 2025 Outside Director (Audit and Supervisory Committee Member), the Company (current)
1960-11-05
Large Shareholding Reports
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2026-07-08
5.15%→4.06%
Growth Capital Co., Ltd.
2026-06-24
6.23%→5.15%
Growth Capital Co., Ltd.
2026-06-16
7.29%→6.23%
Growth Capital Co., Ltd.
2026-06-05
8.51%→7.29%
Growth Capital Co., Ltd.
2026-05-26
10.65%→9.57%
Growth Capital Co., Ltd.
2026-05-26
9.57%→8.51%
Growth Capital Co., Ltd.
2026-04-21
11.36%→10.65%
Growth Capital Co., Ltd.
2026-04-06
12.36%→11.36%
Growth Capital Co., Ltd.
2026-03-25
13.19%→12.36%
Growth Capital Co., Ltd.
2026-03-12
14.29%→13.19%
Growth Capital Co., Ltd.
2026-02-26
15.03%→14.29%
Growth Capital Co., Ltd.
2026-02-03
16.18%→15.03%
Growth Capital Co., Ltd.
2026-01-16
16.67%→16.18%
Growth Capital Co., Ltd.
2025-12-22
16.67%
Disclosures
No disclosures
Primary Source Filings
EDINET
2026-08-13
Semi-Annual Securities Report
Period: Jan 2026 – Dec 2026
TDnet
2026-08-13
Q2 Earnings Flash
FY ending Dec 2026
EDINET
2026-07-08
Large Shareholding Report
EDINET
2026-06-24
Large Shareholding Report
EDINET
2026-06-16
Large Shareholding Report
EDINET
2026-06-05
Large Shareholding Report
EDINET
2026-05-26
Large Shareholding Report
EDINET
2026-05-26
Large Shareholding Report
TDnet
2026-05-14
Q1 Earnings Flash
FY ending Dec 2026
EDINET
2026-04-21
Large Shareholding Report
EDINET
2026-04-06
Large Shareholding Report
EDINET
2026-03-27
Annual Securities Report
Period: Jan 2025 – Dec 2025
EDINET
2026-03-25
Large Shareholding Report
EDINET
2026-03-12
Large Shareholding Report
EDINET
2026-02-26
Large Shareholding Report
EDINET
2026-02-03
Large Shareholding Report
EDINET
2026-01-16
Large Shareholding Report
EDINET
2025-12-22
Large Shareholding Report
EDINET
2025-11-28
Securities Registration Statement
TDnet
2025-11-11
Q3 Earnings Flash
FY ending Dec 2025
EDINET
2025-08-12
Semi-Annual Securities Report
Period: Jan 2025 – Dec 2025
TDnet
2025-05-12
Q1 Earnings Flash
FY ending Dec 2025
EDINET
2025-03-28
Annual Securities Report
Period: Jan 2024 – Dec 2024
EDINETAmended
2024-11-15
Amended Annual Securities Report
Period: Jan 2023 – Dec 2023
EDINET
2024-08-13
Semi-Annual Securities Report
Period: Jan 2024 – Dec 2024
EDINET
2024-07-05
Securities Registration Statement
EDINET
2024-05-14
Quarterly Securities Report
Period: Jan 2024 – Mar 2024
EDINET
2024-03-26
Annual Securities Report
Period: Jan 2023 – Dec 2023
EDINET
2023-11-14
Quarterly Securities Report
Period: Jul 2023 – Sep 2023
EDINETAmended
2023-11-13
Amended Quarterly Securities Report
Period: Apr 2023 – Jun 2023
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