Alto Neuroscience, Inc. (ANRO) ownership: Top institutional holder: Alpha Wave Global, LP ($83.35M). Insider activity: Net Seller (2 buys, 18 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| Alpha Wave Global, LP | 3707757.00 | $83.35M | 2026-03-31 |
| Commodore Capital LP | 2723196.00 | $61.22M | 2026-03-31 |
| Vestal Point Capital, LP | 2064075.00 | $46.40M | 2026-03-31 |
| PERCEPTIVE ADVISORS LLC | 2009893.00 | $45.18M | 2026-03-31 |
| Spruce Street Capital LP | 1325210.00 | $29.12M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 1207025.00 | $27.13M | 2026-03-31 |
| FRANKLIN RESOURCES INC | 1101874.00 | $24.77M | 2026-03-31 |
| VANGUARD GROUP INC | 1365847.00 | $24.31M | 2025-12-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-05-27 | |
| Sell | null | 2026-05-27 | |
| Sell | null | 2026-05-14 | |
| Sell | null | 2026-05-14 | |
| Sell | null | 2026-05-12 | |
| Sell | null | 2026-05-12 | |
| Sell | null | 2026-05-12 | |
| Sell | null | 2026-05-12 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.