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Seiji Miyahara

Investor

Investor at Taiho Ventures, LLC · Board director at hC Bioscience · Board director at Epi Biologics

Menlo Park, California

Writes $100K – $5M checks · typically $1.5M

Find your path to Seiji

58 people in our graph share verified history with Seiji — schools, employers, funds. One of them is your warm intro.

Jay ParrishunlockedSeiji: together at Magnet Biomedicine (2024–2026)
×4Seiji: together at Epi Biologics
Seiji: together at Theolytics
Seiji: together at Delphia Therapeutics

About

Partner and Senior Investment Director with over 18 years in life sciences. Joined Taiho Ventures in 2016 and serves as board director/observer for several portfolio companies. Previously spent 12 years at Taiho Pharmaceutical in oncology. Holds a PhD in Life Science from Hokkaido University.

Contact· self-published, not guessed

Board director at hC Bioscience

Intro paths

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In turn, Seiji can intro founders to hC Bioscience's investors below.

hC Bioscience's investors · 4

8VCAustin · $100K – $50M checks · since 2022ARCH Venture PartnersChicago · $50K – $250M checksTaiho Ventures, LLCMenlo ParkTakeda VenturesCambridge · $1M – $5M checks

Co-founders at hC Bioscience

LJLeslie J Williams
Leslie J WilliamsExecutive Officer, Director

Board director at Epi Biologics

Intro paths

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In turn, Seiji can intro founders to Epi Biologics's investors below.

Epi Biologics's investors · 11

Avego BioScience CapitalAlpharettaDigitalis VenturesNew York · $100K – $10M checks · since 2023GV (Google Ventures)Mountain View · $250K – $50M checks · since 2023Mission BiocapitalSan Francisco · $500K checksMPM BioImpactBoston · $1M – $15M checks · since 2026Novartis Venture FundBasel · $5M – $25M checksPolaris PartnersBoston · $500K – $5M checks · since 2024Roche Venture FundBasel · $648K – $3.2M checksSamsara BioCapitalPalo AltoTaiho Ventures, LLCMenlo ParkVivo CapitalPalo Alto · $10M – $50M checks

Experience

  1. Taiho Ventures, LLCPartner & Senior Investment Directorcurrent2024 — presentMenlo Park, California, United States
  2. Taiho Ventures, LLCSenior Investment Director2021 — 2024Menlo Park, California, United States
  3. Taiho Ventures, LLCInvestment Director2019 — 2021Menlo Park, California, United States
  4. Taiho Ventures, LLCAssociate Investment Director2016 — 2018Menlo Park, California, United States
  5. Signadori BioBoard Membercurrent2026 — presentParis, France
  6. STORM Therapeutics LimitedBoard Observercurrent2026 — presentCambridge, England, United Kingdom
  7. Magnet BiomedicineBoard Membercurrent2024 — present
  8. Light Horse TherapeuticsBoard Membercurrent2023 — present
  9. EpiBiologicsBoard Membercurrent2023 — presentSan Mateo, California, United States
  10. Delphia TherapeuticsBoard Observercurrent2025 — presentCambridge, Massachusetts, United States
  11. Transition Bio, Inc.Board Observercurrent2022 — presentCambridge, Massachusetts, United States
  12. Anavo Therapeutics BVBoard Observercurrent2020 — presentLeiden, South Holland, Netherlands
  13. Breakpoint Therapeutics GmbHBoard Observercurrent2019 — presentHamburg, Germany
  14. TheolyticsBoard Observer2020 — 2024Oxford, England, United Kingdom
  15. Taiho Pharmaceutical Co., Ltd.,Research Fellow2004 — 2016Japan

Skills & more

Board of DirectorsVenture CapitalFundraisingLife Sciences2Biotechnology1Start-ups1Drug Discovery1Due Diligence1

From Seiji's professional profile.

Colleagues at Taiho Ventures, LLC

Hidefumi Kasua
Investment Director at Taiho Ventures, LLC
Hidefumi Kasuga
Investment Director at Taiho Ventures, LLC
Sakae Asanuma
President and CEO at Taiho Ventures, LLC
Takaaki Ishii
Senior Investment Director at Taiho Ventures, LLC
Takayuki Hirano
Associate Investment Director at Taiho Ventures, LLC

Frequently asked questions

Who is Seiji Miyahara?
Partner and Senior Investment Director with over 18 years in life sciences. Joined Taiho Ventures in 2016 and serves as board director/observer for several portfolio companies. Previously spent 12 years at Taiho Pharmaceutical in oncology. Holds a PhD in Life Science from Hokkaido University.
Where does Seiji Miyahara work?
Seiji Miyahara is Investor at Taiho Ventures, LLC and Board director at hC Bioscience and Board director at Epi Biologics.
What check size does Seiji Miyahara write?
Seiji Miyahara typically writes checks of $100K – $5M.
Where did Seiji Miyahara go to school?
Seiji Miyahara studied at Hokkaido University (Doctor of Philosophy - PhD, Life Science).

Same school

Shared employers

Also worked at Delphia Therapeutics1

Stella PaffenholzSenior Associate at Atlas Venture