Diagonal Therapeutics Funding, Investors & Competitors

Diagonal Therapeutics has raised $253M across 2 funding rounds, most recently a $125M Series B in January 2026.

Last Diagonal Therapeutics funding round

$125M

Series B · Jan 2026

Cumulative funding Diagonal Therapeutics raised

$253M

across 2 funding rounds

Key investors in Diagonal Therapeutics

  • Lightspeed Venture Partners
  • Atlas Venture
  • Biotechnology Value Fund
  • Frazier Life Sciences
  • Velosity Capital
  • RA Capital Management
  • Viking Global Investors
  • Janus Henderson

Diagonal Therapeutics Overview

About Diagonal Therapeutics

Diagonal Therapeutics is a clinical-stage biotechnology firm developing agonist antibodies for challenging diseases through its proprietary discovery platform. Headquartered in Zurich, Switzerland, the company combines computational design with experimental validation to overcome limitations in traditional antibody development. Its lead candidates target G protein-coupled receptors for immunology and oncology applications, with partnerships including Roche and academic institutions driving pipeline advancement.


Founded

2022

HQ

United StatesUnited States

Status

Privately held

Customer focus

B2B

Revenue model

Licensing

Diagonal Therapeutics Funding History

Diagonal Therapeutics has raised a total of $253M across 2 funding rounds.

Diagonal Therapeutics' first fundraising round was a $128M Series A in April 2024. The most recent completed round was a $125M Series B in January 2026.

Diagonal Therapeutics funding rounds

Diagonal Therapeutics funding rounds
DateStageInvestorsRaisedDeal Summary
Jan 2026Series BJanus Henderson (lead); Sanofi Ventures (lead); Velosity Capital; RV Invest; Balyasny Asset Management; Biotechnology Value Fund; Atlas Venture; Deep Track Capital; Lightspeed Venture Partners; Frazier Life Sciences; Biovision Ventures; EcoR1 Capital$125MDiagonal Therapeutics, a Watertown, Mass.-based biotechnology company, develops disease-modifying clustering antibodies that correct dysregulated signaling in severe genetic diseases. The company announced the closing of an oversubscribed $125 million Series B financing on January 8, 2026, co-led by Sanofi Ventures and Janus Henderson Investors. New investors included Deep Track Capital, EcoR1 Capital, Logos Capital, Balyasny Asset Management L.P., and Woodline Partners LP, while existing investors such as Atlas Venture, BVF Partners (Biotechnology Value Fund), Lightspeed Venture Partners, RA Capital Management (likely RV Invest), Frazier Life Sciences, Viking Global Investors, Velosity Capital, Biovision Ventures, and others participated. Paulina Hill, Ph.D., Partner at Sanofi Ventures, will join the board. Proceeds will fund clinical development of lead candidate DIAG723, a first-in-class clustering antibody targeting the root cause of hereditary hemorrhagic telangiectasia (HHT) and pulmonary arterial hypertension (PAH), with a first-in-human trial expected in H1 2026. DIAG723 showed robust preclinical activity in preventing and reversing disease pathology. The company also advances earlier pipeline assets in hematology, hepatology, nephrology, iron overload, and chronic kidney disease. This Series B follows a $128 million Series A in mid-2024, bringing total funding over $250 million since emerging from stealth. Both HHT and PAH represent multibillion-dollar market opportunities, and the financing supports platform expansion.
Apr 2024Series AAtlas Venture (lead); Biotechnology Value Fund (lead); Velosity Capital; Lightspeed Venture Partners; Checkpoint Capital; Frazier Life Sciences; RA Capital Management; Viking Global Investors$128MDiagonal Therapeutics, a Cambridge, MA-based biotechnology company, launched on April 3, 2024, with $128 million in Series A financing co-led by BVF Partners (Biotechnology Value Fund) and Atlas Venture. Additional participants included Lightspeed Venture Partners, RA Capital Management, Frazier Life Sciences, Viking Global Investors, Velosity Capital, and Checkpoint Capital. The company was co-founded by CEO Alex Lugovskoy, Ph.D., and Atlas Venture, with prior seeding from Atlas, Lightspeed, and Velosity. Diagonal pioneers agonist antibodies using its proprietary DIAGONAL platform, which integrates computational and experimental techniques to identify antibodies that reactivate deficient signaling pathways for treating severely debilitating diseases. The lead program targets hereditary hemorrhagic telangiectasia (HHT), a rare bleeding disorder with limited options, aiming for clinical proof-of-concept. A second program addresses pulmonary arterial hypertension (PAH), potentially complementary to existing therapies like Merck's Winrevair. Proceeds will advance the pipeline, including the HHT program to proof-of-concept and additional programs to milestones. The company plans modest headcount growth focused on clinical capabilities.

Who has invested in Diagonal Therapeutics?

15 investors have backed Diagonal Therapeutics across its funding rounds, including Lightspeed Venture Partners, Atlas Venture, Biotechnology Value Fund, Frazier Life Sciences, Velosity Capital and RA Capital Management.

Lead investors include Janus Henderson, Sanofi Ventures, Atlas Venture and Biotechnology Value Fund.


Diagonal Therapeutics Investors

Investors in Diagonal Therapeutics by funding rounds participated
InvestorHQRoundsRoleFirst check
Velosity CapitalUnited StatesJackson, MS2ParticipantApr 2024
Biotechnology Value FundUnited StatesSan Francisco, CA2LeadApr 2024
Atlas VentureUnited StatesUnited States2LeadApr 2024
Lightspeed Venture PartnersUnited StatesSan Francisco, CA2ParticipantApr 2024
Frazier Life SciencesUnited StatesSan Francisco, CA2ParticipantApr 2024
RV InvestGermanyRavensburg1ParticipantJan 2026
Balyasny Asset ManagementUnited StatesChicago, IL1ParticipantJan 2026
Janus HendersonUnited StatesLondon1LeadJan 2026
Deep Track CapitalUnited StatesGreenwich, CT1ParticipantJan 2026
Checkpoint CapitalUnited StatesAustin, TX1ParticipantApr 2024
Biovision VenturesLuxembourgLuxembourg1ParticipantJan 2026
RA Capital ManagementUnited StatesBoston, MA1ParticipantApr 2024
Viking Global InvestorsUnited StatesStamford, CT1ParticipantApr 2024

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Diagonal Therapeutics Competitors

Diagonal 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 Diagonal 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

Diagonal Therapeutics Public Comps

Diagonal 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 Diagonal Therapeutics

When was Diagonal Therapeutics founded?Diagonal Therapeutics was founded in 2022.
Where is Diagonal Therapeutics headquartered?Diagonal Therapeutics is headquartered in United States.
Is Diagonal Therapeutics publicly listed?No, Diagonal Therapeutics is a private, VC-backed company.
How much funding has Diagonal Therapeutics raised?Diagonal Therapeutics has raised $253M across 2 funding rounds.
What was Diagonal Therapeutics' last funding round?Diagonal Therapeutics' last funding round was a $125M Series B in January 2026, led by Janus Henderson and Sanofi Ventures.
Who are Diagonal Therapeutics' investors?Diagonal Therapeutics' investors include Velosity Capital, Biotechnology Value Fund, Atlas Venture, Lightspeed Venture Partners, Frazier Life Sciences, RV Invest, Balyasny Asset Management, Janus Henderson, Deep Track Capital, Checkpoint Capital and 5 others.
Which companies are comparable to Diagonal Therapeutics?Companies comparable to Diagonal Therapeutics include Eli Lilly, Johnson & Johnson, AbbVie, Merck, Biosplice Therapeutics and Biocon Biologics.

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