Alto Neuroscience ANRO Insider Ownership

Updated Oct 10, 2026

Over the past year, ANRO insiders sold $3.57 million of stock (134.89K shares) on the open market and bought none.

• Nicholas Conrad Smith (President and CFO) led open-market sales of Alto Neuroscience stock over the past 12 months with $3.57 million (134.89K shares), most recently on September 30, 2026.
• Away from the open market, ANRO insiders acquired 189.89K shares through option exercises and conversions, gave up 9.03K shares to cover taxes or exercise prices and gave away 400K shares as gifts over the last 12 months.
• Per Business Quant data, Alto Neuroscience insiders hold 1.69Mn shares in total based on their latest Form 4 filings, up 3.36% from 1.64Mn shares at the end of Q2 2026.
• Alto Neuroscience insiders hold 936.93K shares directly (55.36% of their total) and 755.5K shares (44.64%) indirectly, through entities such as trusts and partnerships.
• ANRO's insider total is spread across 5 insiders who have filed a Form 4 in the past two years.
• Alto Neuroscience's top three insider holders by shares held are Amit Etkin (President and CEO, 833.95K shares), Christopher Nixon Cox (Director, 715.65K shares) and Nicholas Conrad Smith (President and CFO, 79.06K shares).
• The largest insider, Amit Etkin, holds 49.28% of ANRO's insider total.
• Institutions owned 68.84% of ANRO shares as of Q2 2026; insiders' latest Form 4 filings account for about 3.95%, leaving roughly 27.21% with other investors, including the public.
• Over the trailing 12 months, 10 insiders reported transactions in ANRO stock across 19 Form 4 filings.
• The insider holdings and trades above for Alto Neuroscience reflect Form 4 filings through October 5, 2026.