Alto Neuroscience, Inc.
Ownership
Ownership Structure
Who owns Alto Neuroscience, Inc. (ANRO)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 75.4% of the shares are freely tradable; institutional investors hold 82.1%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Alpha Wave Global LP | 9.45 | 3,707,757 | +0.0 | 06/30/2026 |
| COMMODORE CAPITAL LP | 6.94 | 2,723,196 | +0.0 | 06/30/2026 |
| BlackRock Inc | 5.40 | 2,121,009 | +218.4 | 06/30/2026 |
| Perceptive Advisors LLC | 4.10 | 1,609,893 | -19.9 | 06/30/2026 |
| Adage Capital Partners Gp LLC | 4.08 | 1,600,000 | +315.6 | 06/30/2026 |
| Vanguard Capital Management, LLC | 3.54 | 1,389,477 | +15.1 | 06/30/2026 |
| Spruce Street Capital LP | 3.45 | 1,353,047 | +2.1 | 06/30/2026 |
| Vivo Capital, LLC | 3.08 | 1,208,858 | +16.7 | 06/30/2026 |
| Franklin Templeton Inc | 2.58 | 1,013,307 | -8.0 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard MStar Total Stk Mkt Idx Invest | 3.07 | 1,205,281 | +19.1 | 09/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Smith Nicholas Conrad | PRESIDENT AND CFO | 79,060 | 1,786,756 $ | Oct 2, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Oct 2, 2026 | Smith Nicholas Conrad | PRESIDENT AND CFO | Other | 55,000 | 2.32 | 127,600 |
| Sep 30, 2026 | Smith Nicholas Conrad | PRESIDENT AND CFO | Sell | 886 | 26.87 | 23,807 |
| Sep 30, 2026 | Smith Nicholas Conrad | PRESIDENT AND CFO | Sell | 23,170 | 25.78 | 597,290 |
| Sep 30, 2026 | Smith Nicholas Conrad | PRESIDENT AND CFO | Other | 24,056 | 2.35 | 56,532 |
| Sep 29, 2026 | Smith Nicholas Conrad | PRESIDENT AND CFO | Sell | 110,830 | 26.58 | 2,946,150 |
| Sep 29, 2026 | Smith Nicholas Conrad | PRESIDENT AND CFO | Other | 54,375 | 2.35 | 127,781 |
| Sep 29, 2026 | Smith Nicholas Conrad | PRESIDENT AND CFO | Other | 56,455 | 2.35 | 132,669 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: October 30, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.