Alto Neuroscience's top three insider shareholders as of August 29, 2026 are Wave Global, Lp Alpha (TenPercentOwner, 3.71Mn shares), Investment Group Ltd. Apeiron (Other, 926.54K shares), Amit Etkin (President And Ceo, 833.95K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Wave Global, Lp Alpha | TenPercentOwner | 0 | 3,707,757 | 3,707,757 | 66.2% | 08 Feb, 2024 |
| 2 | Investment Group Ltd. Apeiron | Other | 251,881 | 674,658 | 926,539 | 16.5% | 05 Mar, 2024 |
| 3 | Amit Etkin | President And Ceo | 833,949 | 0 | 833,949 | 14.9% | 15 May, 2026 |
| 4 | Po Yu (Jeff) Chen | Director | 47,709 | 0 | 47,709 | 0.9% | 07 Feb, 2024 |
| 5 | Adam Savitz | Chief Medical Officer | 0 | 39,851 | 39,851 | 0.7% | 11 Jul, 2024 |
| 6 | Nicholas Conrad Smith | Chief Financial Officer Cbo | 24,060 | 0 | 24,060 | 0.4% | 03 Mar, 2026 |
| 7 | Gwill York | Director | 23,917 | 0 | 23,917 | 0.4% | 07 Feb, 2024 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 27 May, 2026 | Andrew Craig Miller | Director | Acquired A | 26,000 | $0.00 | $0 | 26,000 | Direct |
| 14 May, 2026 | Amit Etkin | President And Ceo | Disposed G | 400,000 | $0.00 | $0 | 833,949 | Direct |
| 12 May, 2026 | Ramiro Sanchez | Director | Acquired A | 10,958 | $0.00 | $0 | 10,958 | Direct |
| 12 May, 2026 | Gwill York | Director | Acquired A | 10,958 | $0.00 | $0 | 10,958 | Direct |
| 12 May, 2026 | Husseini Manji | Director | Acquired A | 10,958 | $0.00 | $0 | 10,958 | Direct |
| 12 May, 2026 | Christopher Nixon Cox | Director | Acquired A | 10,958 | $0.00 | $0 | 10,958 | Direct |
| 01 Mar, 2026 | Amit Etkin | President And Ceo | Disposed F | 6,227 | $19.69 | $122.61K | 1,233,949 | Direct |
| 01 Mar, 2026 | Nicholas Conrad Smith | Chief Financial Officer Cbo | Disposed F | 2,806 | $19.69 | $55.25K | 24,060 | Direct |
| 01 Mar, 2026 | Nicholas Conrad Smith | Chief Financial Officer Cbo | Disposed F | 2,806 | $19.69 | $55.25K | 24,060 | Direct |
| 01 Mar, 2026 | Nicholas Conrad Smith | Chief Financial Officer Cbo | Disposed F | 2,806 | $19.69 | $55.25K | 24,060 | Direct |
| 01 Mar, 2026 | Nicholas Conrad Smith | Chief Financial Officer Cbo | Disposed F | 2,806 | $19.69 | $55.25K | 24,060 | Direct |
| 11 Feb, 2026 | Nicholas Conrad Smith | Chief Financial Officer Cbo | Acquired A | 200,000 | $0.00 | $0 | 200,000 | Direct |
| 11 Feb, 2026 | Jr. Michael Conick Hanley | Chief Operating Officer | Acquired A | 131,000 | $0.00 | $0 | 131,000 | Direct |
| 11 Feb, 2026 | Nicholas Conrad Smith | Chief Financial Officer Cbo | Acquired A | 200,000 | $0.00 | $0 | 200,000 | Direct |
| 11 Feb, 2026 | Adam Savitz | Chief Medical Officer | Acquired A | 124,000 | $0.00 | $0 | 124,000 | Direct |
| 11 Feb, 2026 | Jr. Michael Conick Hanley | Chief Operating Officer | Acquired A | 131,000 | $0.00 | $0 | 131,000 | Direct |
| 11 Feb, 2026 | Nicholas Conrad Smith | Chief Financial Officer Cbo | Acquired A | 200,000 | $0.00 | $0 | 200,000 | Direct |
| 11 Feb, 2026 | Jr. Michael Conick Hanley | Chief Operating Officer | Acquired A | 131,000 | $0.00 | $0 | 131,000 | Direct |
| 11 Feb, 2026 | Nicholas Conrad Smith | Chief Financial Officer Cbo | Acquired A | 200,000 | $0.00 | $0 | 200,000 | Direct |
| 11 Feb, 2026 | Adam Savitz | Chief Medical Officer | Acquired A | 124,000 | $0.00 | $0 | 124,000 | Direct |