Alto Neuroscience, Inc.
A clinical-stage biopharmaceutical company working in precision psychiatry, Alto Neuroscience uses brain imaging and biomarkers to match people with mental health treatments likely to work for them, rather than the usual trial-and-error approach. It was founded in 2019 by Dr. Amit Etkin, a psychiatrist and neuroscientist and former Stanford professor, building on his years of research. A naming quirk: "Alto" may nod to the Latin for "high" — and to Palo Alto, where Etkin worked at the VA medical center.
| Holder | Schedule | % of class | Shares | Filed |
|---|---|---|---|---|
| Perceptive Advisors LLC | 13G/APassive | 9.99% | 4.18M | Aug 14, 2026 |
| Joseph Edelman | 13G/APassive | 9.99% | 4.18M | Aug 14, 2026 |
| Perceptive Life Sciences Master Fund, Ltd. | 13G/APassive | 9.99% | 4.18M | Aug 14, 2026 |
| Sirenia Capital Management LP | 13G/APassive | 6.2% | 2.22M | Aug 14, 2026 |
| Alex Silverstein | 13G/APassive | 6.2% | 2.22M | Aug 14, 2026 |
| Vestal Point Capital, LP | 13G/APassive | 2.2% | 785.0K | Aug 14, 2026 |
| Ryan Wilder | 13G/APassive | 2.2% | 785.0K | Aug 14, 2026 |
| BlackRock, Inc. | 13GPassive | 6% | 2.10M | Jul 27, 2026 |
| EcoR1 Capital, LLC | 13GPassive | 5.8% | 2.23M | Jul 20, 2026 |
| Oleg Nodelman | 13GPassive | 5.8% | 2.23M | Jul 20, 2026 |