A federal court in California dismissed the securities class action over Alto Neuroscience's ALTO-100 disclosures on August 7, 2026, and gave the plaintiffs leave to file a third amended complaint. A related derivative action has been stayed.
Alto may owe up to $71,500,000 in milestone payments, payable in cash or restricted stock, and says its cash is still expected to fund operations into 2028.
Alto Neuroscience filed a $300,000,000 shelf on February 3, 2025 and signed a $75,000,000 at-the-market sales agreement with Leerink Partners LLC, but no sale can start until the SEC declares the shelf effective, and its year-end cash figure is still preliminary.
Alto Neuroscience's January 13, 2025 amendment lifts the maximum term loans from $35.0 million to $75.0 million and moves maturity to January 1, 2029. Only $20.0 million was funded at signing, and about $10 million of that went to refinance the old loan and pay fees.
What Alto Neuroscience does
Alto Neuroscience is a clinical-stage biopharmaceutical company that aims to redefine psychiatry through its Precision Psychiatry Platform, which discovers brain-based biomarkers to identify which patients are more likely to respond to its product candidates. The company has seven clinical-stage assets addressing major depressive disorder, bipolar depression, treatment resistant depression, schizophrenia and Parkinson's disease. Its most advanced program is ALTO-207, a fixed-dose combination of pramipexole and ondansetron that the company acquired in May 2025 from Chase Therapeutics Corporation. ALTO-207 is being developed for treatment resistant depression, and the company plans a Phase 2b trial. The platform collects data from neurocognitive assessments, electroencephalography, wearable devices and genetic samples, and applies machine learning. The company reports biomarker collection across more than 70 unique clinical sites and from over 2,000 participants.
Product or program
What it is
Stage
ALTO-207
Fixed-dose pramipexole and ondansetron combination for treatment resistant depression
Phase 2b planned; Phase 3 expected to start by early 2027
Precision Psychiatry Platform
Brain biomarker discovery using EEG, neurocognitive assessments and wearable devices
biomarker collection across more than 70 unique clinical sites
Alto reports $243.7 million, plus $94.6 million net from a July offering. Our arithmetic gives 43 to 59 months. But ALTO-100 and ALTO-101 both missed in Phase 2, and quarterly spending is up sharply.
Opinion, not personal investment advice. All analysis.
Questions about Alto Neuroscience
Is there a class action against Alto Neuroscience?
Our latest story on this, dated Aug 12, 2026: "Alto Neuroscience IPO securities class action dismissed with leave to amend". The story links the filing or release it is based on. Read the story.
When did Alto Neuroscience go public?
Our latest story on this, dated Aug 12, 2026: "Alto Neuroscience IPO securities class action dismissed with leave to amend". The story links the filing or release it is based on. Read the story.
Has Alto Neuroscience raised money recently?
Our latest story on this, dated Feb 3, 2025: "Alto Neuroscience files $300,000,000 shelf with $75,000,000 at-the-market program". The story links the filing or release it is based on. Read the story.
What is the ticker symbol of Alto Neuroscience?
Alto Neuroscience, Inc. trades under the ticker ANRO on NYSE.
Where is Alto Neuroscience listed?
Alto Neuroscience, Inc. is listed on NYSE.
What is the SEC CIK of Alto Neuroscience?
The SEC Central Index Key (CIK) for Alto Neuroscience, Inc. is 1999480. Its filings are on SEC EDGAR.
How many shares does Alto Neuroscience have outstanding?
39,242,104 shares as of 2026-08-07, per the cover page of its 10-Q filed 2026-08-12.
Which country or territory is Alto Neuroscience listed under?
Our directory records Alto Neuroscience, Inc. under United States.
What does Alto Neuroscience do?
Our directory classifies Alto Neuroscience, Inc. as: Biotechnology. This is a directory classification, not a description of the pipeline.
What is the ISIN of Alto Neuroscience?
The ISIN recorded for Alto Neuroscience, Inc. is US02157Q1094.
Does aibio.space cover Alto Neuroscience?
aibio.space lists Alto Neuroscience, Inc. among 2,820 public biotech companies and publishes its news here as stories appear.
Where is Alto Neuroscience incorporated?
SEC records list its state or country of incorporation as DE.
What does Alto Neuroscience develop?
Alto Neuroscience is a clinical-stage biopharmaceutical company that aims to redefine psychiatry through its Precision Psychiatry Platform, which discovers brain-based biomarkers to identify which patients are more likely to respond to its product candidates. The company has seven clinical-stage assets addressing major depressive disorder, bipolar depression, treatment resistant depression, schizophrenia and Parkinson's disease.
What is ALTO-207 from Alto Neuroscience?
ALTO-207: Fixed-dose pramipexole and ondansetron combination for treatment resistant depression Stage: Phase 2b planned; Phase 3 expected to start by early 2027.
What is Precision Psychiatry Platform from Alto Neuroscience?
Precision Psychiatry Platform: Brain biomarker discovery using EEG, neurocognitive assessments and wearable devices Stage: biomarker collection across more than 70 unique clinical sites.
Investor discussion: Alto Neuroscience
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Capital-markets timeline
Financings, listing notices, splits, legal actions and other investor events at Alto Neuroscience, newest first. Each line links the filing it comes from.
Reported an unregistered sale of its securities. SEC Form 8-K (Items 1.01,2.03,3.02,9.01). Source
Stock chart
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SEC filings and registration
SEC name
Alto Neuroscience, Inc.
CIK
1999480
Industry (SIC)
Pharmaceutical Preparations (2834)
US tickers
ANRO (NYSE)
State or country of incorporation
DE
Fiscal year ends
December 31
Filer category
<br>Emerging growth company
Business address
650 CASTRO STREET, SUITE 450, MOUNTAIN VIEW, CA, 94041
Phone
773-255-5012
Shares outstanding
39,242,104 as of 2026-08-07 (10-Q filed 2026-08-12)
Recent filings (8-K and 6-K are the company's own announcements)
Source: SEC EDGAR, retrieved October 23, 2026. Shares outstanding is the cover-page figure from the latest periodic report. The SEC does not publish share prices.
Listing details
Alto Neuroscience, Inc. is a public biotech or pharmaceutical company listed on NYSE under the ticker ANRO, recorded under United States. The directory classifies it as Biotechnology. aibio.space tracks 2,820 public biotech companies worldwide and publishes investor news on them.
Listing facts come from our company directory, researched on October 22, 2026. A listing record does not certify that a security currently trades. Tell us about a change. Work at this company? Claim this page.
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