Windward Bio Funding, Investors & Competitors

Windward Bio has raised $365M across 2 funding rounds, most recently a $165M undisclosed-stage round in May 2026.

Last Windward Bio funding round

$165M

Undisclosed stage · May 2026

Cumulative funding Windward Bio raised

$365M

across 2 funding rounds

Key investors in Windward Bio

  • Qiming Venture Partners
  • OrbiMed
  • Novo Holdings
  • SR One
  • Omega Funds
  • RTW Investments
  • Quan Capital
  • RA Capital Management

Windward Bio Overview

About Windward Bio

Windward Bio is a Basel, Switzerland-based clinical-stage biotechnology company launched in January 2025. It develops long-acting immunology therapies for serious respiratory and dermatological diseases such as severe asthma and COPD, including its lead candidate WIN378, a long-acting anti-TSLP monoclonal antibody in-licensed from Kelun-Biotech and Harbour BioMed. The company has in-licensed a second bispecific antibody candidate, WIN027, from Qyuns Therapeutics to expand its pipeline in respiratory and dermatology indications.


Founded

2024

HQ

SwitzerlandSwitzerland

Status

Privately held

Customer focus

B2C

Revenue model

Product sales

Windward Bio Funding History

Windward Bio has raised a total of $365M across 2 funding rounds.

Windward Bio's first fundraising round was a $200M Series A in January 2025. The most recent completed round was a $165M undisclosed-stage round in May 2026.

Windward Bio funding rounds

Windward Bio funding rounds
DateStageInvestorsRaisedDeal Summary
May 2026Undisclosed stageOrbiMed (lead); RTW Investments; Novo Holdings; Quan Capital; SR One; Janus Henderson; Qiming Venture Partners; HBM Holdings; Omega Funds; RA Capital Management; Dyal Capital Partners; Sanofi Ventures$165MWindward Bio completed a $165 million crossover financing on May 4, 2026, led by OrbiMed with participation from new investors RA Capital Management, Janus Henderson Investors, Sanofi Ventures, and Harbour BioMed, alongside existing Series A investors including Novo Holdings, Blue Owl Healthcare Opportunities, SR One, Omega Funds, RTW Investments, Qiming Venture Partners, Quan Capital, and Pivotal bioVenture Partners. Proceeds will advance lead candidate WIN378 into Phase 3 trials and WIN027 into proof-of-concept studies across respiratory and dermatology indications starting in Q4 2026, significantly extending cash runway to enable multiple clinical readouts within the next 12 months. Windward Bio, a Basel, Switzerland-based clinical-stage biotechnology company launched in January 2025, focuses on long-acting immunology therapies for serious immunological diseases in respiratory and dermatology. The company has in-licensed two clinical-stage assets and raised a total of $365 million to date, rapidly advancing both programs in the clinic.
Jan 2025Series ABlue Owl Capital Inc. (lead); Novo Holdings (lead); OrbiMed (lead); RTW Investments; Quan Capital; SR One; Qiming Venture Partners; Omega Funds; Pivotal bioVenture Partners$200MWindward Bio, a Swiss-based clinical-stage biotechnology company focused on developing novel therapeutics for serious immunological diseases like severe asthma and COPD, launched on January 10, 2025, with a $200 million oversubscribed Series A financing. The round was co-led by OrbiMed, Novo Holdings, and Blue Owl Healthcare Opportunities, with participation from SR One, Omega Funds, RTW Investments, Qiming Venture Partners, Quan Capital, and Pivotal bioVenture Partners. Proceeds fund the advancement of two undisclosed bispecific programs through IND-enabling studies and the development of lead candidate WIN378, a phase 2-ready, long-acting anti-TSLP monoclonal antibody in-licensed from Kelun-Biotech and Harbour BioMed, featuring potential six-month dosing. The founding team, led by CEO Luca Santarelli, M.D., includes seasoned executives with a track record of over 15 product launches, two Nasdaq IPOs, and exits including Therachon to Pfizer for $810M and VectivBio to Ironwood for $1.2B. WIN378 targets thymic stromal lymphopoietin (TSLP) for severe respiratory conditions, with phase 2 trials planned and initial readouts anticipated by 2026. The company aims to build a pipeline of long-acting bispecifics leveraging validated targets for best-in-disease efficacy in immunology. In late 2025, Windward Bio expanded via a second licensing deal with Qyuns Therapeutics for WIN027 (formerly QX027N), a potent long-acting bispecific antibody for respiratory and dermatology indications, valued at up to $700M in upfront, equity, milestones, and royalties (excluding Greater China). This follows the initial Kelun-Harbour deal, which included $45M upfront/near-term payments split between partners plus potential change-of-control or sublicense fees.

Who has invested in Windward Bio?

14 investors have backed Windward Bio across its funding rounds, including Qiming Venture Partners, OrbiMed, Novo Holdings, SR One, Omega Funds and RTW Investments.

Lead investors include OrbiMed, Blue Owl Capital Inc. and Novo Holdings.


Windward Bio Investors

Investors in Windward Bio by funding rounds participated
InvestorHQRoundsRoleFirst check
RTW InvestmentsUnited StatesNew York City, NY2ParticipantJan 2025
Novo HoldingsDenmarkCopenhagen2LeadJan 2025
Quan CapitalChinaShanghai2ParticipantJan 2025
SR OneUnited StatesUnited States2ParticipantJan 2025
Qiming Venture PartnersChinaShanghai2ParticipantJan 2025
Omega FundsUnited StatesBoston, MA2ParticipantJan 2025
OrbiMedUnited StatesNew York City, NY2LeadJan 2025
Blue Owl Capital Inc.United StatesNew York City, NY1LeadJan 2025
Janus HendersonUnited StatesLondon1ParticipantMay 2026
HBM HoldingsChinaShanghai1ParticipantMay 2026
RA Capital ManagementUnited StatesBoston, MA1ParticipantMay 2026
Dyal Capital PartnersUnited StatesNew York City, NY1ParticipantMay 2026

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Windward Bio Competitors

Windward Bio 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 Windward Bio
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

Windward Bio Public Comps

Windward Bio 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 Windward Bio

When was Windward Bio founded?Windward Bio was founded in 2024.
Where is Windward Bio headquartered?Windward Bio is headquartered in Switzerland.
Is Windward Bio publicly listed?No, Windward Bio is a private, VC-backed company.
How much funding has Windward Bio raised?Windward Bio has raised $365M across 2 funding rounds.
What was Windward Bio's last funding round?Windward Bio's last funding round was a $165M undisclosed-stage round in May 2026, led by OrbiMed.
Who are Windward Bio's investors?Windward Bio's investors include RTW Investments, Novo Holdings, Quan Capital, SR One, Qiming Venture Partners, Omega Funds, OrbiMed, Blue Owl Capital Inc., Janus Henderson, HBM Holdings and 4 others.
Which companies are comparable to Windward Bio?Companies comparable to Windward Bio include Johnson & Johnson, Roche, Biosplice Therapeutics, Biomat USA, ArsenalBio and BioRay Pharmaceuticals.

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