Guillaume Pfefer
CEO Partner Senda Biosciences, a Flagship Pioneering company at Flagship Pioneering
Boston, Massachusetts
Guillaume Pfefer, CEO Partner Senda Biosciences, a Flagship Pioneering company at Flagship Pioneering is an active investor based in Boston, Massachusetts. This profile covers what Guillaume Pfefer backs, at which stage, and how founders can reach out in 2026.
- Investor type
- VCInvestor
- Stages
- Early Stage VentureSeries A
- Invests in
- Biotech & Pharma
- Location
- Boston, Massachusetts
- Typical check
- $750K
- Past investments
- 2
Notable investments
How to reach Guillaume Pfefer
Angels and operators like Guillaume Pfefer reply to specific, personalized notes that show real traction, not mass blasts. Build a verified list, write a note that fits their thesis, and track replies, all on Round Funded Accelerator.
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Frequently Asked Questions
What does Guillaume Pfefer invest in?
Guillaume Pfefer invests in Biotech & Pharma, typically at Early Stage Venture and Series A. Match your sector and stage, then reach out with a personalized pitch.
What stage does Guillaume Pfefer invest at?
Guillaume Pfefer typically invests at Early Stage Venture and Series A. Lead with traction that fits the stage when you reach out.
What is Guillaume Pfefer's typical check size?
Guillaume Pfefer typically writes checks around $750K. Use it as a signal for whether your raise fits their stage.
How do I contact Guillaume Pfefer?
Unlock Guillaume Pfefer's verified email on Round Funded Accelerator and send a personalized pitch. We surface only deliverable contacts so your outreach lands.