Alto Neuroscience, Inc.

Alto Neuroscience, Inc. is a clinical-stage biopharmaceutical company focused on psychiatry and other central nervous system disorders. Founded in 2019 and based in Mountain View, California, it is building a Precision Psychiatry Platform that uses neurobiology and data science to identify biomarkers and match patients to treatments more likely to work for them. The company’s pipeline includes seven clinical-stage assets across major depressive disorder, bipolar depression, treatment-resistant depression, schizophrenia, and Parkinson’s disease. Alto is still in development mode, with no commercial products and no internal manufacturing footprint, and relies on third-party partners for clinical supply and future commercialization support.

15.69

15.69

— Alto Neuroscience, Inc.
%
Precision psychiatry platform0% Proprietary neurobiology and data-science tools used to identify biomarkers and stratify patients for clinical development.
Clinical-stage CNS drug candidates100% Investigational therapies targeting depression, schizophrenia, and Parkinson’s disease across multiple mechanisms.

Alto does not currently sell commercial products, so its near-term customers are primarily clinical trial participants,...

  • Clinical trial participantsprimary

    Patients enrolled in Alto’s studies for MDD, schizophrenia, TRD, bipolar depression, and Parkinson’s disease to generate efficacy and biomarker data.

  • Clinical investigators and research sitesprimary

    Hospitals, clinics, and trial sites that administer protocols and collect data needed to advance the pipeline.

  • Psychiatrists and neurologistssecondary

    Future prescribers who would use Alto’s approved products if development succeeds, especially in hard-to-treat CNS disorders.

  • Commercial partnersemerging

    Potential licensing or commercialization partners, especially outside the United States, that could help launch approved products.

Alto is headquartered in Mountain View, California and is incorporated in Delaware, with operations centered in the...

  • Headquartered in Mountain View, California
  • Incorporated in Delaware and managed from the United States
  • Clinical development and oversight are primarily U.S.-based
  • Relies on third-party CMOs and CROs rather than owned facilities
  • May seek ex-U.S. commercialization partners after approval

Alto’s strategy is to build a differentiated psychiatry pipeline around biomarker-based patient stratification rather...

01
Advance the clinical pipelineshort-term

The company has no commercial revenue, so value creation depends on generating positive clinical data and moving assets toward regulatory milestones.

02
Focus capital on highest-priority programsshort-term

As a clinical-stage company with limited resources, Alto needs to concentrate spending on programs with the best probability of value creation.

03
Build a differentiated precision psychiatry franchisemedium-term

Biomarker-based patient selection is intended to improve clinical success rates and create a competitive moat versus untargeted CNS drug development.

04
Prepare for future commercializationmedium-term

If products are approved, Alto will need a scalable launch model and may need partners outside the U.S. to reach global markets efficiently.

Alto faces the core risks of a clinical-stage biopharmaceutical company: no approved products, no commercial revenue,...

critical

Clinical development failure

The company’s value depends on positive data from seven clinical-stage assets, and any trial setback could materially reduce pipeline value.

Scope
All programs, especially ALTO-101, ALTO-202, ALTO-207, and ALTO-208
Materiality
high
high

Funding and dilution risk

Alto expects to need substantial additional capital to fund operations and clinical development beyond its current runway.

Scope
Company-wide
Materiality
high
high

Third-party trial and manufacturing dependence

The company relies on CROs and CMOs for clinical execution and supply, so delays or quality issues can slow development.

Scope
Clinical trials and clinical supply chain
Materiality
high
high

Competitive pressure in CNS drug development

Larger biopharma and biotech competitors may reach approval faster or commercialize more effectively in psychiatry and neuroscience.

Scope
MDD, TRD, schizophrenia, Parkinson’s disease
Materiality
medium
medium

Cybersecurity and data privacy

Clinical and biomarker data are sensitive, and breaches or system disruptions could impair trials and damage trust.

Scope
Internal systems, vendors, and trial data
Materiality
medium
Accrued research and development expenses
Can move quarterly R&D expense and accrued liabilities materially
Milestone and royalty obligations
Can create contingent liabilities and cash outflows
Stock-based compensation
Affects G&A and R&D expense
Clinical program timing and expense volatility
Makes period-to-period comparisons less stable

: 11/08/2026