Flare Therapeutics Funding, Investors & Competitors

Flare Therapeutics has raised $290M across 3 funding rounds, most recently a $85M Series C in June 2026.

Last Flare Therapeutics funding round

$85M

Series C · Jun 2026

Cumulative funding Flare Therapeutics raised

$290M

across 3 funding rounds

Key investors in Flare Therapeutics

  • Casdin Capital
  • Invus
  • Pfizer Venture Investments
  • Third Rock Ventures
  • Boxer Capital
  • Nextech Invest
  • Eventide
  • GordonMD Global Investments

Flare Therapeutics Overview

About Flare Therapeutics

Flare Therapeutics is a clinical-stage biotech company headquartered in Cambridge, Massachusetts, developing small molecules targeting transcription factor switch sites for oncology. Its lead program, FX-201, entered Phase 1 trials in 2024 for estrogen receptor-positive breast cancer. Founded on research from Dana-Farber Cancer Institute, Flare advances pipelines in prostate cancer and beyond, leveraging cryo-EM structures for drug design.


Founded

2021

HQ

United StatesUnited States

Status

Privately held

Customer focus

B2B

Revenue model

Product sales

Flare Therapeutics Funding History

Flare Therapeutics has raised a total of $290M across 3 funding rounds.

Flare Therapeutics' first fundraising round was a $82M Series A in May 2021. The most recent completed round was a $85M Series C in June 2026.

Flare Therapeutics funding rounds

Flare Therapeutics funding rounds
DateStageInvestorsRaisedDeal Summary
Jun 2026Series CNextech Invest (lead); Third Rock Ventures (lead); Boxer Capital; GordonMD Global Investments; Pfizer Venture Investments; Eventide; Casdin Capital; Invus; Novartis; Agent Capital; Eli Lilly$85MFlare Therapeutics closed an $85 million Series C financing round in June 2026, led by Third Rock Ventures and Nextech Invest, with participation from Agent Capital, Pfizer Ventures, Eli Lilly, Novartis, Boxer Capital, Casdin Capital, Invus, GordonMD Global Investments, and Eventide Asset Management. The transaction involved the issuance of convertible preferred shares and resulted in a post-money valuation of approximately $188.49 million. Proceeds will advance FX-111, Flare's lead androgen receptor degrader targeting ARON, to proof-of-concept clinical studies for prostate cancer, with Phase 1A initiation expected in Q3 2026 following FDA IND clearance. The funding also supports preclinical development of the ARON RIPTAC program and general corporate purposes. In connection with the financing, Flare appointed Anna Protopapas as Chief Executive Officer and reprioritized its pipeline to focus on prostate cancer and advanced urothelial cancer. Flare Therapeutics is a clinical-stage biotechnology company based in Cambridge, Massachusetts, focused on drugging transcription factors in oncology, and maintains a partnership with Roche.
Mar 2023Series BGordonMD Global Investments (lead); Pfizer Venture Investments (lead)$123MFlare Therapeutics, a Cambridge, MA-based biotechnology company, develops precision medicines targeting transcription factors for cancer and other diseases using a proprietary platform that identifies druggable 'switch sites' within transcription factor complexes. The company raised $123 million in an oversubscribed Series B financing round on March 22, 2023, co-led by GordonMD Global Investments LP and Pfizer Ventures, with participation from existing investors including Boxer Capital, Casdin Capital, Eventide Asset Management, Invus Group, Nextech Invest, and Third Rock Ventures, as well as new investors Agent Capital, Eli Lilly and Company, Memorial Sloan Kettering Cancer Center, Novartis, Pavilion Capital, and ShangBay Capital. Craig D. Gordon, M.D., from GordonMD, and Irena Melnikova, Ph.D., from Pfizer Ventures, joined the board. Proceeds from the round support a planned 2023 clinical trial for lead candidate FX-909, a first-in-class small molecule inhibitor targeting the PPARG transcription factor in patients with advanced urothelial cancer, and advancement of the oncology pipeline, including nomination of at least one additional development candidate by 2024. Led by President and CEO Amit Rakhit, M.D., MBA, and Co-founder and Chief Scientific Officer Rob Sims, Ph.D., Flare had previously raised $82 million in Series A financing in 2021 led by Third Rock Ventures, bringing total funding to $205 million across three rounds as of the Series B. The company's platform enables rational design of small molecules to tune gene expression against genetically validated transcription factor targets. Flare's team rapidly advanced its pipeline since launch, positioning FX-909 for clinic entry in locally advanced or metastatic urothelial cancer.
May 2021Series AThird Rock Ventures (lead); Boxer Capital; Nextech Invest; Eventide; Casdin Capital; Invus$82MFlare Therapeutics, a biotechnology company targeting transcription factors to discover precision medicines for cancer and other diseases, launched on May 13, 2021, with an $82 million Series A financing led by Third Rock Ventures. Significant participation came from Boxer Capital, Nextech Invest, Casdin Capital, Invus Financial Advisors, and Eventide Asset Management. The funding supports advancing its lead precision oncology program toward the clinic, expected in 2023 or 2024, and developing a pipeline of therapeutic programs targeting cancer drivers like transcription factor dysregulation and mutations using a switch-site based drug discovery approach. At launch, Flare had three lead precision oncology programs, with plans to grow its staff from 12-15 full-time employees to 25, relying initially on contractors and partners. Scientific co-founder Steven McKnight, Ph.D., from UT Southwestern, highlighted opportunities for small molecule drugs based on advances in human genetics and gene regulation biochemistry. Interim CEO Abbie Celniker, Ph.D., from Third Rock Ventures, emphasized conquering transcription factors central to cancer and other diseases. The company later raised an oversubscribed $123 million Series B on March 22, 2023, co-led by GordonMD Global Investments and Pfizer Ventures, with participation from existing and new investors including Agent Capital, Eli Lilly, Novartis, and others, to advance FX-909 (PPARG inhibitor) into clinic and expand the pipeline.

Who has invested in Flare Therapeutics?

11 investors have backed Flare Therapeutics across its funding rounds, including Casdin Capital, Invus, Pfizer Venture Investments, Third Rock Ventures, Boxer Capital and Nextech Invest.

Lead investors include Nextech Invest, Third Rock Ventures, GordonMD Global Investments and Pfizer Venture Investments.


Flare Therapeutics Investors

Investors in Flare Therapeutics by funding rounds participated
InvestorHQRoundsRoleFirst check
Boxer CapitalUnited StatesOrlando, FL2ParticipantMay 2021
GordonMD Global InvestmentsUnited StatesLos Angeles, CA2LeadMar 2023
Nextech InvestSwitzerlandZurich2LeadMay 2021
Pfizer Venture InvestmentsUnited StatesNew York City, NY2LeadMar 2023
EventideUnited StatesBoston, MA2ParticipantMay 2021
Casdin CapitalUnited StatesNew York City, NY2ParticipantMay 2021
InvusUnited StatesNew York City, NY2ParticipantMay 2021
Third Rock VenturesUnited StatesBoston, MA2LeadMay 2021
NovartisSwitzerlandBasel1ParticipantJun 2026

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Flare Therapeutics Competitors

Flare Therapeutics competitors include listed companies like Eli Lilly, Johnson & Johnson, AbbVie and Merck, and private ones like Biosplice Therapeutics and Biocon Biologics.

Public and private companies comparable to Flare Therapeutics
CompanyHQStatusRevenueEBITDAValuationRevenue Multiple
Eli LillyUnited StatesUnited StatesPublicly listed$65B$28B$1.0T13.1x
Johnson & JohnsonUnited StatesUnited StatesPublicly listed$94B$40B$651B6.8x
AbbVieUnited StatesUnited StatesPublicly listed$61B$17B$467B8.1x
MerckUnited StatesUnited StatesPublicly listed$65B$28B$363B6.2x
Biosplice TherapeuticsUnited StatesSan Diego, CAPrivate--$12B-
Biocon BiologicsIndiaBangalorePrivate$1.1B-$4.5B4.2x

Flare Therapeutics Public Comps

Flare Therapeutics is still privately-owned, but its public comps include Eli Lilly, Johnson & Johnson, AbbVie, Merck, Roche, Novartis, AstraZeneca, Amgen, Novo Nordisk and Gilead Sciences.

Last FYEV/RevenueEV/EBITDA
RevenueEBITDALast FYLTM2027ELast FYLTM2027E
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
Amgen$37B$17B6.8x6.5x14.8x14.4x

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Common questions about Flare Therapeutics

When was Flare Therapeutics founded?Flare Therapeutics was founded in 2021.
Where is Flare Therapeutics headquartered?Flare Therapeutics is headquartered in United States.
Is Flare Therapeutics publicly listed?No, Flare Therapeutics is a private, VC-backed company.
How much funding has Flare Therapeutics raised?Flare Therapeutics has raised $290M across 3 funding rounds.
What was Flare Therapeutics' last funding round?Flare Therapeutics' last funding round was a $85M Series C in June 2026, led by Nextech Invest and Third Rock Ventures.
Who are Flare Therapeutics' investors?Flare Therapeutics' investors include Boxer Capital, GordonMD Global Investments, Nextech Invest, Pfizer Venture Investments, Eventide, Casdin Capital, Invus, Third Rock Ventures, Novartis, Agent Capital and 1 other.
Which companies are comparable to Flare Therapeutics?Companies comparable to Flare Therapeutics include Eli Lilly, Johnson & Johnson, AbbVie, Merck, Biosplice Therapeutics and Biocon Biologics.

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