United Kingdom · Funded startup

Who invested in Achilles Therapeutics

4 rounds we have observed, with the 9 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

BiotechHealthcare

Funding summaryUpdated 26 Oct 2026

$143Mraised across 4 rounds since 2016, from 4 sources

$16MRound$121MSeries B$4.1MGrant$1.4MRound
Latest round
Round, $1.4MFeb 2025
Biggest round
$121MSeries B · Sept 2019
Investors
9 (1 led)
See who backed them

The funding story

Each circle is a round, placed by date and sized by amount. The line above is the running total.

2018202020222024
$16MRound$121MSeries B$4.1MGrant$1.4MRound
First round
Round, $16M
Nov 2016
Biggest round
$121M
Series B · Sept 2019
Usual gap between rounds
2.8 years
the median of 3

The rounds

  1. Feb 2025
    Round$1.4M

    No investor was named in the report.

    Shares issued, filed with Companies House (SH01); no report of this raise yet

  2. Jul 2022
  3. Sept 2019
  4. Nov 2016
    Round$16M3 new

    Reported by FinSMEs

Funding filed with regulators

Achilles Therapeutics filed 3 raises, $1.4M in all. Filings say how much was sold and to how many investors; they never name the investors.

  1. Mar 2025$223KUK share allotment
  2. Feb 2025$257KUK share allotment
  3. Feb 2025$919KUK share allotment

Who was in which round

The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.

Everyone who backed them

RA Capital ManagementPrivate equity2rounds, led 1
Perceptive AdvisorsAsset manager2rounds
Forbion Capital PartnersPrivate equity2rounds
Redmile GroupVC firm2rounds
OrbiMedPrivate equity1round
InvusPrivate equity1round
UCL Technology FundVC firm1round
SynconaVC firm1round
CRTno record of our own yet1round

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

Quick answers about Achilles Therapeutics

Who invested in Achilles Therapeutics?

Achilles Therapeutics's investors include RA Capital Management, Perceptive Advisors, Forbion Capital Partners, Redmile Group and OrbiMed, and 4 more on record.

How much has Achilles Therapeutics raised?

Achilles Therapeutics has raised $143M across 4 rounds since 2016.

When did Achilles Therapeutics last raise?

Achilles Therapeutics's most recent round, $1.4M, was in Feb 2025.

What was Achilles Therapeutics's biggest round?

Achilles Therapeutics's largest round on record is $121M (Series B), in Sept 2019, led by RA Capital Management.

Who backed Achilles Therapeutics first?

Achilles Therapeutics's first round on record, in Nov 2016, was backed by UCL Technology Fund, Syncona and CRT.

What stage is Achilles Therapeutics at?

Achilles Therapeutics's latest named round is a Grant, in Jul 2022.

Where is Achilles Therapeutics based?

Achilles Therapeutics is based in the United Kingdom.

Who led Achilles Therapeutics's rounds?

RA Capital Management led the Series B in 2019.

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