United States · Series A startup

Who invested in Parallel Bio

One round we have observed, with the 4 investors named in it. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

Biotech

Y Combinator: S21

Funding summaryUpdated 26 Oct 2026

$21Mraised across 1 round since 2025, from 1 source

Latest round
Series A, $21MJun 2025
Investors
4
See who backed them

The rounds

  1. Jun 2025

Founders and team

From Parallel Bio's own website: 2 founders, 12 on the team.

Juliana HilliardCo-Founder & Co-CEO
Robert DiFazioCo-Founder & Co-CEO
  • Amanda MerkelsonHead of Biobanking
  • Jennifer LeeVP of Finance and Operations
  • Nate ShapiroHead of Platform
  • Nathan BandowHead of Technical Operations
  • Amr AlySenior Software Engineer
  • Belinda ChinStaff Software Engineer
  • Chris HerSenior Research Associate
  • Claudio BrunOperations Manager
  • Fatima Al-NaimiResearch Associate
  • Lanna AvetisyanOffice Manager
  • Teddy LamIT & Security Lead
  • Yi-Jang LinSenior Scientist

Everyone who backed them

Y CombinatorAccelerator1round
Refactor CapitalVC firm1round
AmploVC firm1round
AIX VenturesVC firm1round

Missing a round, or an investor who was in one? Tell us.

Also claim to have backed them

This firm lists Parallel Bio as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above.

Humba VenturesVC firmPer its own site

Quick answers about Parallel Bio

Who invested in Parallel Bio?

Parallel Bio's investors include Y Combinator, Refactor Capital, Amplo and AIX Ventures.

How much has Parallel Bio raised?

Parallel Bio has raised $21M across 1 round since 2025.

When did Parallel Bio last raise?

Parallel Bio's most recent round was a Series A of $21M in Jun 2025.

What was Parallel Bio's biggest round?

Its most recent round, $21M in Jun 2025, is also its largest on record.

Who backed Parallel Bio first?

Parallel Bio's first round on record, in Jun 2025, was backed by Y Combinator, Refactor Capital and Amplo and 1 others.

What stage is Parallel Bio at?

Parallel Bio's latest named round is a Series A, in Jun 2025.

Where is Parallel Bio based?

Parallel Bio is based in the United States.

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