ARTBIO Funding, Investors & Competitors

ARTBIO has raised $245M across 3 funding rounds, most recently a $132M Series B in July 2025.

Last ARTBIO funding round

$132M

Series B · Jul 2025

Cumulative funding ARTBIO raised

$245M

across 3 funding rounds

Key investors in ARTBIO

  • F-Prime
  • Omega Funds
  • Third Rock Ventures
  • Alexandria Venture Investments
  • B Capital
  • Qatar Investment Authority
  • Sofinnova Investments

ARTBIO Overview

About ARTBIO

ARTBIO is a Boston-headquartered clinical-stage radiopharmaceutical company developing alpha radioligand therapies for solid tumors. Its ART-814 program targets PSMA-positive prostate cancers and entered Phase 1 trials in 2024, while ART-409 addresses undisclosed targets. The platform combines differentiated chelators with isotopes like Pb-212 to enhance efficacy and safety in oncology.


Founded

2021

HQ

United StatesUnited States

Website

artbio.com

Status

Privately held

Customer focus

B2C

Revenue model

Product sales

ARTBIO Funding History

ARTBIO has raised a total of $245M across 3 funding rounds.

ARTBIO's first fundraising round was a $23M seed round in June 2023. The most recent completed round was a $132M Series B in July 2025.

ARTBIO funding rounds

ARTBIO funding rounds
DateStageInvestorsRaisedDeal Summary
Jul 2025Series BB Capital (lead); Sofinnova Investments (lead); Alexandria Venture Investments; Qatar Investment Authority; Third Rock Ventures; F-Prime; Omega Funds$132MARTBIO, a clinical-stage radiopharmaceutical company based in Cambridge, Mass., and Oslo, Norway, develops alpha radioligand therapies (ARTs) using the Pb-212 isotope and tumor-specific targets for treating cancers, with its proprietary AlphaDirect technology enabling distributed manufacturing of high-purity Pb-212. The company announced the closing of a $132 million Series B financing on July 29, 2025, co-led by new investors Sofinnova Investments and B Capital, alongside support from an existing life sciences dedicated investment fund, existing investors F-Prime, Omega Funds, and Third Rock Ventures, and new investors Qatar Investment Authority and Alexandria Venture Investments. Proceeds from the round will advance ARTBIO's lead asset AB001, targeting metastatic castration-resistant prostate cancer, through Phase II development, progress additional undisclosed programs toward IND readiness, and expand manufacturing and supply chain infrastructure leveraging the AlphaDirect generator to address radioisotope production challenges. AB001 is currently in first-in-human trials, and the company maintains a deep pipeline of novel targets across solid tumors through internal R&D and partnerships with firms like 3B Pharmaceuticals and Parabilis. ARTBIO's approach differentiates it in the radiopharma space by harnessing Pb-212's 10.6-hour half-life with a reliable supply chain, overcoming limitations of other alpha emitters like Ac-225 that rely on centralized production via nuclear reactors or cyclotrons. The investment reflects confidence in ARTBIO's integrated manufacturing, differentiated portfolio, and leadership team rooted in a century of radiation therapy expertise from the University of Oslo and Norway's Radium Hospital.
Dec 2023Series AThird Rock Ventures (lead); F-Prime; Omega Funds$90MARTBIO is a clinical-stage radiopharmaceutical company developing targeted alpha radioligand therapies (ARTs) using its proprietary Pb212 isolation technology AlphaDirect™ for cancer treatment, with a lead program AB001 in clinical trials for prostate cancer and additional pipeline programs. The company raised an oversubscribed and upsized $90 million Series A financing on December 7, 2023, co-led by Third Rock Ventures and an undisclosed healthcare fund, with participation from existing investors F-Prime Capital and Omega Funds. Funds will advance AB001 into the clinic, progress the pipeline, solidify AlphaDirect™ technology, and develop a distributed manufacturing network. This followed a $23 million seed round in June 2023. ARTBIO appointed Philippe Dasse as chief technical officer and Daniel Rossetto as head of supply chain and external manufacturing to support expansion. In July 2025, ARTBIO raised a $132 million Series B co-led by Sofinnova Investments and B Capital, with support from F-Prime, Omega Funds, Third Rock Ventures, Qatar Investment Authority, and Alexandria Venture Investments to advance AB001 through Phase II, additional programs to IND, and expand supply chain infrastructure.
Jun 2023SeedF-Prime (lead); Omega Funds$23MARTBIO is a clinical-stage radiopharmaceutical company developing targeted alpha radioligand therapies (ARTs) designed to maximize therapeutic potential for cancer treatment, with its lead program AB001 targeting metastatic castration resistant prostate cancer in first-in-human trials. The company launched on June 21, 2023, with a $23 million seed financing led by F-Prime Capital and Omega Funds to support ongoing clinical development of AB001 and establishment of its proprietary AlphaDirect™ technology for Pb-212 isotope isolation and distributed manufacturing. ARTBIO's therapies leverage a new class of alpha-emitting radioligands enabled by nearly a century of pioneering radiation therapy research from the University of Oslo and Norway's Radium Hospital. Following the seed round, ARTBIO raised an oversubscribed $90 million Series A in early 2024, co-led by Third Rock Ventures and an undisclosed healthcare fund, with significant participation from seed investors F-Prime and Omega Funds. The Series A funds advanced AB001 in prostate cancer trials, progressed additional pipeline programs, solidified AlphaDirect™ technology, and expanded the distributed manufacturing network. Management expanded with key hires in technical operations and supply chain to support scale-up. In July 2025, ARTBIO closed a $132 million Series B co-led by Sofinnova Investments and B Capital, with support from F-Prime, Omega Funds, Third Rock Ventures, Qatar Investment Authority, and Alexandria Venture Investments. Proceeds advanced AB001 into Phase II, pushed undisclosed programs toward IND readiness, and expanded supply chain infrastructure using AlphaDirect™ for reliable Pb-212 production and delivery of ARTs.

Who has invested in ARTBIO?

7 investors have backed ARTBIO across its funding rounds, including F-Prime, Omega Funds, Third Rock Ventures, Alexandria Venture Investments, B Capital and Qatar Investment Authority.

Lead investors include B Capital, Sofinnova Investments, Third Rock Ventures and F-Prime.


ARTBIO Investors

Investors in ARTBIO by funding rounds participated
InvestorHQRoundsRoleFirst check
F-PrimeUnited StatesUnited States3LeadJun 2023
Omega FundsUnited StatesBoston, MA3ParticipantJun 2023
Third Rock VenturesUnited StatesBoston, MA2LeadDec 2023
Alexandria Venture InvestmentsUnited StatesLos Angeles, CA1ParticipantJul 2025
Qatar Investment AuthorityQatarQatar1ParticipantJul 2025

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ARTBIO Competitors

ARTBIO 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 ARTBIO
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

ARTBIO Public Comps

ARTBIO 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 ARTBIO

When was ARTBIO founded?ARTBIO was founded in 2021.
Where is ARTBIO headquartered?ARTBIO is headquartered in United States.
Is ARTBIO publicly listed?No, ARTBIO is a private, VC-backed company.
How much funding has ARTBIO raised?ARTBIO has raised $245M across 3 funding rounds.
What was ARTBIO's last funding round?ARTBIO's last funding round was a $132M Series B in July 2025, led by B Capital and Sofinnova Investments.
Who are ARTBIO's investors?ARTBIO's investors include F-Prime, Omega Funds, Third Rock Ventures, Alexandria Venture Investments, Qatar Investment Authority, B Capital and Sofinnova Investments.
Which companies are comparable to ARTBIO?Companies comparable to ARTBIO include Eli Lilly, Johnson & Johnson, AbbVie, Merck, Biosplice Therapeutics and Biocon Biologics.

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