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- Diagonal Therapeutics
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
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
Website
Status
Privately held
Customer focus
B2B
Revenue model
Licensing
Sectors
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
| Date | Stage | Investors | Raised | Deal Summary |
|---|---|---|---|---|
| Jan 2026 | Series B | Janus 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 | $125M | Diagonal 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 2024 | Series A | Atlas Venture (lead); Biotechnology Value Fund (lead); Velosity Capital; Lightspeed Venture Partners; Checkpoint Capital; Frazier Life Sciences; RA Capital Management; Viking Global Investors | $128M | Diagonal 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
| Investor | HQ | Rounds | Role | First check |
|---|---|---|---|---|
| 2 | Participant | Apr 2024 | ||
| 2 | Lead | Apr 2024 | ||
| 2 | Lead | Apr 2024 | ||
| 2 | Participant | Apr 2024 | ||
| 2 | Participant | Apr 2024 | ||
| 1 | Participant | Jan 2026 | ||
| 1 | Participant | Jan 2026 | ||
| 1 | Lead | Jan 2026 | ||
| 1 | Participant | Jan 2026 | ||
| 1 | Participant | Apr 2024 | ||
| 1 | Participant | Jan 2026 | ||
| 1 | Participant | Apr 2024 | ||
| 1 | Participant | Apr 2024 | ||
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Benchmark 350K+ Funding Rounds and Disclosed VC Valuation Multiples
Sign up to see data on 350K+ funding rounds and disclosed revenue and EBITDA valuation multiples, from seed, through growth stage, to pre-IPO.
Start Free TrialDiagonal 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.
| Company | HQ | Status | Revenue | EBITDA | Valuation | Revenue Multiple |
|---|---|---|---|---|---|---|
| Publicly listed | $65B | $28B | $1.0T | 13.1x | ||
| Publicly listed | $94B | $40B | $651B | 6.8x | ||
| Publicly listed | $61B | $17B | $467B | 8.1x | ||
| Publicly listed | $65B | $28B | $363B | 6.2x | ||
| Private | - | - | $12B | - | ||
| Private | $1.1B | - | $4.5B | 4.2x |
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 FY | EV/Revenue | EV/EBITDA | ||||||
|---|---|---|---|---|---|---|---|---|
| Revenue | EBITDA | Last FY | LTM | 2027E | Last FY | LTM | 2027E | |
| $65B | $28B | 16.5x | 13.1x | 38.7x | 27.0x | |||
| $94B | $40B | 7.2x | 6.8x | 17.0x | 18.3x | |||
| $61B | $17B | 8.7x | 8.1x | 30.6x | 17.6x | |||
| $65B | $28B | 6.3x | 6.2x | 14.7x | 21.0x | |||
| $77B | $26B | 5.0x | 4.9x | 14.6x | 12.4x | |||
| $57B | $22B | 5.5x | 5.5x | 14.2x | 13.3x | |||
| $59B | $19B | 4.8x | 4.5x | 14.6x | 12.7x | |||
| $37B | $17B | 6.8x | 6.5x | 14.8x | 14.4x | |||
This data is available for Pro users. Sign up to see all Diagonal Therapeutics competitors and their valuation data. Start Free Trial | ||||||||
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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