Parallel Bio

Parallel Bio develops tools that help in the discovery and development of immunotherapies.

Health and bio Logistics and mobilityY Combinator

Latest funding

$21M Series A · June 12, 2025

Led by AIX Ventures · Source: fundraisingfox.com

Total raised: $25.3M across 2 sourced rounds

All 3 rounds ↓

Website: parallel.bio.

X: @ParallelBio · 152 followers.

LinkedIn: parallelbio.

Categories: Health and bio Logistics and mobility.

Sectors: Healthcare, Drug Discovery and Delivery, AI-powered Drug Discovery, Biotech.

Stage: Series A.

Based in: San Francisco, United States.

Total raised: $25.3M in 2 sourced rounds.

Last round: Jun 12, 2025 · 518 days ago.

Team: 20 people on the team page.

On Recent Funding since: Sep 28, 2026.

Signals

X account@ParallelBio · created Apr 13, 2021 (5 years old) · 152 followers

Website registeredMay 7, 2020 (6 years old)

TIMELINE · MONEY RAISED

Parallel Bio | 957 days from website to first raise on record

@ParallelBio·Raised $25M in 2 sourced rounds·2 signals before the first raise

Money raised, round by round (amounts linked to their source). Pins are dated signals; hover the icons for dates.

Funding rounds

June 12, 2025
Series A · $21M
AAIX Ventures (lead), AAmplo, AAtypical Ventures, HHumba Ventures, JJeffrey Dean, MMarc Benioff, MMetaplanet Holdings, UUndeterred Capital
Source: fundraisingfox.com
December 20, 2022
Seed · $4.3M
RRefactor (lead), BBreakout Ventures, IImmeasurable, JJeffrey Dean, JJulian Capital, YY Combinator
Source: fundraisingfox.com
Summer 2021
YY Combinator · batch
Source: ycombinator.com
April 13, 2021
X account created
May 7, 2020
Website created

Founders and team

RM
Robert M. DiFazio Co-Founder & CEO

LinkedIn · source: foundertrace.com
JH
Juliana Hilliard Co-Founder & CSO

LinkedIn · source: foundertrace.com

Investors

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AIX Ventures portfolio →

Sources and API

Every amount links to the page it came from. * Estimated from an accelerator's published standard deal, not a company-specific disclosure. How Recent Funding sources and verifies funding data. The same data as JSON: /api/v1/companies/parallel-bio (get a free API key).