Quell Therapeutics Funding, Investors & Competitors

Quell Therapeutics has raised $240M across 3 funding rounds, most recently a $156M Series B in November 2021.

Last Quell Therapeutics funding round

$156M

Series B · Nov 2021

Cumulative funding Quell Therapeutics raised

$240M

across 3 funding rounds

Key investors in Quell Therapeutics

  • Syncona
  • UCL Technology Fund
  • Fidelity
  • SV Health Investors
  • Janus Henderson
  • British Patient Capital
  • Tekla Capital Management
  • Jeito Capital

Quell Therapeutics Overview

About Quell Therapeutics

Quell Therapeutics is a London-headquartered biotechnology company developing engineered T-regulatory cell therapies for solid organ transplantation and autoimmune diseases like ulcerative colitis. Founded in 2019 with backing from Syncona, the firm engineers allogeneic Tregs using CRISPR technology at its GMP facility in Greater London. Quell's lead program, QEL-001, targets liver transplant rejection and entered Phase I trials in 2023. The company collaborates with King's College London and University College London for clinical translation.


Founded

2019

HQ

United KingdomLondon

Status

Privately held

Customer focus

B2B

Revenue model

Product sales

Quell Therapeutics Funding History

Quell Therapeutics has raised a total of $240M across 3 funding rounds.

Quell Therapeutics' first fundraising round was a $44M Series A in May 2019. The most recent completed round was a $156M Series B in November 2021.

Quell Therapeutics funding rounds

Quell Therapeutics funding rounds
DateStageInvestorsRaisedDeal Summary
Nov 2021Series BFidelity (lead); Jeito Capital (lead); Ridgeback Capital (lead); SV Health Investors (lead); Janus Henderson; Point72; Tekla Capital Management; Monashee Investment Management; British Patient Capital; Syncona$156MQuell Therapeutics, a UCLB spinout founded in 2019, develops engineered T-regulatory (Treg) cell therapies for serious conditions driven by immune system overactivity, including liver transplantation, neuroinflammatory, and autoimmune diseases. The company builds on expertise from UCL, King's College London, and Hannover Medical School, with lead programs like QEL-001 aimed at promoting immune tolerance to reduce chronic immunosuppression needs. Its multi-modular platform enhances Treg cell stability, persistence, potency, and manufacturability at scale. On November 29, 2021, Quell closed an oversubscribed $156 million Series B financing co-led by Jeito Capital, Ridgeback Capital Investments, SV Health Investors, and Fidelity Management & Research Company LLC. Founding investor Syncona participated, alongside new investors British Patient Capital (via Future Fund: Breakthrough), Janus Henderson Investors, Monashee Investment Management, Point72, and Tekla Capital Management funds. This followed a Series A round expanded to $84 million in February 2021. Proceeds fund clinical development of QEL-001 into a phase I/II trial for liver transplant patients, pipeline expansion across transplantation and autoimmune indications, and enhancements to the Treg platform and manufacturing. The financing supports Quell's ambition to lead in engineered Treg therapies addressing major unmet needs in immune dysregulation diseases, backed by a premier investor syndicate and world-class team. Quell positions itself as a biotech innovator in cell therapy, with prior $44.5 million Series A extended to $84 million, now advancing toward clinic with significant capital.
Feb 2021Series ASyncona (lead); UCL Technology Fund (lead)$40MQuell Therapeutics is a biotechnology company developing engineered T regulatory (Treg) cell therapies to address chronic medical conditions, including liver transplantation, autoimmune, and neuroinflammatory diseases. Founded in March 2019 by Syncona in partnership with experts from King’s College London, University College London, and Hannover Medical School, the company focuses on inducing immune tolerance using multiply engineered Treg cells. On February 11, 2021, Quell announced the closing of an extended Series A financing totaling circa $84 million, led by existing investors Syncona Ltd (additional $34.7 million) and UCL Technology Fund (additional $1 million). The funds support progression of its lead program in liver transplantation to clinical proof of concept, portfolio expansion into autoimmune and neuroinflammatory diseases, development of scalable manufacturing processes, and senior leadership team growth. Quell had rapidly advanced from concept to clinical candidate nomination in under 18 months, positioning it as a leader in engineered Treg therapies. Later, in December 2021, Quell raised £117 million ($156 million) in an oversubscribed Series B round co-led by Jeito Capital, Ridgeback Capital Investments, SV Health Investors, and Fidelity, with Syncona participation, to trial Treg therapy for preventing liver transplant rejection.
May 2019Series ASyncona (lead); UCL Technology Fund (lead)$44MQuell Therapeutics, a biotechnology company developing engineered T regulatory (Treg) cell therapies for applications including liver transplantation, autoimmune diseases, and neuroinflammatory conditions, was founded by Syncona in March 2019 in partnership with experts from King's College London, University College London, and Hannover Medical School. The initial Series A financing around May 2019 involved Syncona providing £35 million (approximately $44.2 million), with an additional £1.0 million from UCL Technology Fund. This round supported early development in the Treg field, focusing on tolerance induction and scalable manufacturing. The Series A was later expanded, with announcements in February 2021 bringing the total to circa $84 million through additional commitments from Syncona ($34.7 million more) and UCL Technology Fund ($1 million more), funding progression to clinical proof-of-concept for liver transplantation programs and portfolio expansion. Quell advanced rapidly, nominating clinical candidates within 18 months of founding. Syncona, a key backer focused on cell and gene therapies, maintained significant involvement across portfolio companies. By 2023, Quell had raised about £175 million cumulatively from investors led by Syncona, which then owned 33.7% of the company, ahead of a major collaboration with AstraZeneca valued at over $2 billion targeting autoimmune diseases like type-1 diabetes and bowel disease. The company continued development through later rounds, reaching Series B with total funding of $344 million from investors including Fidelity, Ridgeback Capital, Jeito Capital, SV Health Investors, AstraZeneca, British Patient Capital, and Janus Henderson Investors, with pipeline assets in Phase 1/2 and Phase 2 stages.

Who has invested in Quell Therapeutics?

11 investors have backed Quell Therapeutics across its funding rounds, including Syncona, UCL Technology Fund, Fidelity, SV Health Investors, Janus Henderson and British Patient Capital.

Lead investors include Fidelity, Jeito Capital, Ridgeback Capital, SV Health Investors, Syncona and 1 other investor.


Quell Therapeutics Investors

Investors in Quell Therapeutics by funding rounds participated
InvestorHQRoundsRoleFirst check
SynconaUnited KingdomLondon3LeadMay 2019
UCL Technology FundUnited KingdomLondon2LeadMay 2019
SV Health InvestorsUnited StatesBoston, MA1LeadNov 2021
FidelityUnited StatesBoston, MA1LeadNov 2021
Janus HendersonUnited StatesLondon1ParticipantNov 2021
Point72United StatesStamford, CT1ParticipantNov 2021
Tekla Capital ManagementUnited StatesBoston, MA1ParticipantNov 2021
Monashee Investment ManagementUnited StatesBoston, MA1ParticipantNov 2021
British Patient CapitalUnited KingdomSheffield1ParticipantNov 2021

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Quell Therapeutics Competitors

Quell Therapeutics competitors include listed companies like Johnson & Johnson and Roche, and private ones like Biosplice Therapeutics, Biomat USA, ArsenalBio and BioRay Pharmaceuticals.

Public and private companies comparable to Quell Therapeutics
CompanyHQStatusRevenueEBITDAValuationRevenue Multiple
Johnson & JohnsonUnited StatesUnited StatesPublicly listed$94B$40B$651B6.8x
RocheSwitzerlandSwitzerlandPublicly listed$77B$26B$351B4.9x
Biosplice TherapeuticsUnited StatesSan Diego, CAPrivate--$12B-
Biomat USAUnited StatesLos Angeles, CAPrivate--$4.2B-
ArsenalBioUnited StatesUnited StatesPrivate--$1.9B-
BioRay PharmaceuticalsChinaShanghaiPrivate$131M-$1.9B14.5x

Quell Therapeutics Public Comps

Quell Therapeutics is still privately-owned, but its public comps include Samsung, Eli Lilly, Johnson & Johnson, AbbVie, Merck, Roche, Novartis, AstraZeneca, Thermo Fisher Scientific and Siemens.

Last FYEV/RevenueEV/EBITDA
RevenueEBITDALast FYLTM2027ELast FYLTM2027E
Samsung$243B$67B4.4x2.4x15.8x4.4x
Eli Lilly$65B$28B16.5x13.1x38.7x27.0x
Johnson & Johnson$94B$40B7.2x6.8x17.0x18.3x
AbbVie$61B$17B8.7x8.1x30.6x17.6x
Merck$65B$28B6.3x6.2x14.7x21.0x
Roche$77B$26B5.0x4.9x14.6x12.4x
Novartis$57B$22B5.5x5.5x14.2x13.3x
AstraZeneca$59B$19B4.8x4.5x14.6x12.7x

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Common questions about Quell Therapeutics

When was Quell Therapeutics founded?Quell Therapeutics was founded in 2019.
Where is Quell Therapeutics headquartered?Quell Therapeutics is headquartered in London, United Kingdom.
Is Quell Therapeutics publicly listed?No, Quell Therapeutics is a private, VC-backed company.
How much funding has Quell Therapeutics raised?Quell Therapeutics has raised $240M across 3 funding rounds.
What was Quell Therapeutics' last funding round?Quell Therapeutics' last funding round was a $156M Series B in November 2021, led by Fidelity, Jeito Capital, Ridgeback Capital and SV Health Investors.
Who are Quell Therapeutics' investors?Quell Therapeutics' investors include Syncona, UCL Technology Fund, SV Health Investors, Fidelity, Janus Henderson, Point72, Tekla Capital Management, Monashee Investment Management, British Patient Capital, Jeito Capital and 1 other.
Which companies are comparable to Quell Therapeutics?Companies comparable to Quell Therapeutics include Johnson & Johnson, Roche, Biosplice Therapeutics, Biomat USA, ArsenalBio and BioRay Pharmaceuticals.

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