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AirNexis Therapeutics

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Pulmonary disease therapeutics for chronic obstructive pulmonary disease

Palo Alto, United StatesFounded 2025Biotech & Life Sciences
Valuation $500M–1B Last recorded · 2026
Total funding $100–500M Disclosed equity funding
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About AirNexis Therapeutics

AirNexis Therapeutics is a clinical-stage biotechnology company focused on developing therapies for pulmonary diseases, with a primary concentration on chronic obstructive pulmonary disease (COPD). The company was established in January 2026 by the investment firm Frazier Life Sciences. Upon its launch, AirNexis announced the close of a $200 million Series A financing round. The round was led by Frazier Life Sciences, with significant participation from other investors including OrbiMed, SR One, Life Sciences at Goldman Sachs Alternatives, Longitude Capital, and Enavate Sciences.

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The company's business model is centered on the in-licensing and global clinical development of promising drug candidates. AirNexis secured exclusive rights to develop and commercialize a clinical-stage asset, AN01 (also known as HSK39004), from Haisco Pharmaceutical Group for all territories outside of Greater China. Under the agreement, Haisco received $40 million in cash upfront and a 19.9% equity stake in AirNexis. The deal also includes potential regulatory and commercial milestone payments to Haisco of up to $955 million, plus royalties on net sales. Haisco retains the development and commercialization rights for mainland China, Hong Kong, Taiwan, and Macau.

AirNexis' lead product, AN01, is a dual phosphodiesterase 3 and 4 (PDE3/4) inhibitor currently in Phase 2 development. This drug is designed to treat COPD through a dual mechanism of action that promotes bronchodilation (widening of the airways) and reduces inflammation. It is being developed in two inhaled formulations: an inhalation suspension and a dry powder inhaler (DPI), which may offer improved efficacy and patient experience over existing treatments. The proceeds from the Series A financing are dedicated to funding the global clinical development of AN01.

The leadership team includes CEO Maria Fardis, Ph.D., MBA, a venture partner at Frazier Healthcare Partners, and the board is chaired by James Li, M.D., another venture partner at Frazier Life Sciences. The board comprises members from the lead investing firms, reflecting a strong backing from experienced life sciences investors.

Source: Dealroom company data

At a glance

Status
Operational
Founded
2025
Headquarters
Palo Alto, United States
Open positions
None listed
Dealroom signal
55.6/100
Industry
Health
Sub-industry
Pharmaceutical, BioTechnology
Sector
Biotech & Life Sciences, Biotechnology, Respiratory, Chronic Disease, Pulmonary, Rumoured $1B, Biotech and Pharma, Woman Founder, DT and LS, science-based
Business model
Manufacturing
Client focus
b2b
Links
Website

Funding history

1 recorded event

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
SERIES AOther financing Jan 2026 $200M $800M Longitude Capital · SR One · OrbiMed · Goldman Sachs Asset Management ↗
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Growth signals

AirNexis Therapeutics website traffic

Latest recorded traffic for AirNexis Therapeutics is 920 monthly website visits, up 4.5% over the last three months.

Latest monthly visits920 3-month web change+4.5%
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Investments and acquisitions

Capital deployed

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Investors

6 investors on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Series A6 investors entered at this stage

Team profiled 1 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 1 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Global footprint

Workforce and web traffic by country
Workforce by country
🇺🇸 United States · Palo Alto HQ
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Market sentiment

Posts on X, past 7 days

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Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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