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Arsanis, Inc. (XFOR, XFOWW)

Clinical-stage biotech developing monoclonal antibodies for serious infectious diseases.[1][2]

GrowthBiotechLebanon, NH

Total raised

$346.3M

Last round

Equity

$85.0M · Aug 2025

Stage

Growth

Status

Active

Founders & team

Co-founder, CEO

Co-founder, CTO

Head of Engineering

Head of Sales

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Web traffic

Search interest

Social followers

Glassdoor rating

News mentions

Gov contracts

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Get notified the moment Arsanis, Inc. (XFOR, XFOWW) files a new round, hires execs, or shows traction signals.

About this data

FlareSight surfaces funding data from SEC Form D filings within hours of submission. Browse our full startup funding database to find more recently funded companies.