Investor profile
Guillaume Pfefer
Accelerator, Venture capital & CEO Partner Senda Biosciences at Flagship Pioneering
Guillaume Pfefer is a CEO Partner Senda Biosciences at Flagship Pioneering, whose known portfolio counts 9 companies.
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Investment focus
Contacts
Affiliated funds' portfolios
CEO Partner Senda Biosciences at Flagship Pioneering, whose known portfolio counts 9 companies
- Lila Sciences
- Harbinger Health
- Ampersand Biomedicines
- Etiome
- Expedition Medicines
- Extuitive
- Foghorn Therapeutics
- Serif Biomedicines
- Terrana Biosciences
Investor Profile
Guillaume Pfefer is listed against sectors AI, Climate, Food and Healthcare, and focus areas AgriTech, Biotech, Drug Discovery and FoodTech in the database.
Flagship Pioneering appears in Late-Stage, Seed and Series A rounds across its known deals.
The firm portfolio and the focus above give founders context on whether Guillaume Pfefer matches their raise.
Colleagues at Flagship Pioneering
Showing 20 of 45
Margo Georgiadis
CEO/Partner
San Francisco, United States
Hok Hei Tam
Science Partner
Cambridge, United States
Avak Kahvejian
General Partner
Cambridge, United States
Ignacio Martinez
General Partner
Boston, United States
Ajit Singh
CEOPartner
Palo Alto, United States
Jason Park
Partner
Cambridge, United States
Geoffrey von Maltzahn
General Partner
Cambridge, United States
Bernard Cooney
Senior Partner
Cambridge, United States
Jacob Rubens
Origination Partner
Cambridge, United States
Stephen Berenson
Advisor Partner
United States
Torben Straight Nissen
Executive Partner
Boston, United States
Marie Yurkovich
Biotech Company Creation
New York City, United States
Sophie de Boer
Senior Principal
Cambridge, United States
Alex Goldsmith
Vice President, Global Scientific Engagement
Cambridge, United States
Nathan Stebbins
Senior Principal
Los Angeles, United States
Ewen Cameron
Operating Partner
Boston, United States
Olivia Arnold
Venture Creation Associate
Boston, United States
Murillo Silva
Senior Associate in Venture Creation
Boston, United States
Young Guang
Investor
Boston, United States
Charlotte Magnet
Biotech Venture Creation
Cambridge, United States
Frequently asked questions
Who is Guillaume Pfefer?
Guillaume Pfefer is an accelerator partner and venture capital investor based in Boston, Massachusetts, United States, listed as CEO Partner Senda Biosciences at Flagship Pioneering. The known portfolio of that firm counts 9 companies. That portfolio belongs to the firm, not to Guillaume Pfefer personally.
What does Guillaume Pfefer invest in?
Listed sectors include AI, Climate, Food and Healthcare; listed focus areas include AgriTech, Biotech, Drug Discovery and FoodTech. Those tags come from the portfolios of the firms this profile is attached to, so they read as a record of what has been backed rather than a stated preference for what comes next.
What stage does Guillaume Pfefer invest at?
Flagship Pioneering appears in Late-Stage, Seed and Series A rounds across its known deals, and Guillaume Pfefer is listed there as CEO Partner Senda Biosciences. Stage is the strongest single filter when you build a target list: an investor with no record at your stage rarely starts with you.
Which firm is Guillaume Pfefer listed at?
Guillaume Pfefer is listed as CEO Partner Senda Biosciences at Flagship Pioneering. 45 other people in the database share a firm with Guillaume Pfefer.
How do I contact Guillaume Pfefer?
An email address, a phone number and a LinkedIn page are on file for Guillaume Pfefer. The address stays masked on this page and is readable inside RaiseHunt after you create an account.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal