SEC Form 4
Alto Neuroscience Inc. (ANRO) insider trading
In the 12 months to Oct 26, 2026, one ANRO insider reported open-market sales of $3.6M across 1 filing; no open-market purchases were filed.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $3.6M
- 1 filing · 1 insider
- Open-market purchases
- $0
- 0 filings
Who traded ANRO, and when
- Sale
ANRO daily close from Oct 27, 2025 to Oct 26, 2026, between $11.13 and $36.64, last $22.15. 1 sale and 0 purchase filings by 1 insider, marked at their filing dates. Nicholas Conrad Smith, PRESIDENT AND CFO: sold $3.6M across 1 filing, first filed Oct 1, 2026, last Oct 1, 2026.
Largest mark · tap a row for others
Nicholas Conrad Smith · PRESIDENT AND CFO
Sale $3,567,247
134,886 shares at $26.45 avg
Filed Oct 1, 2026 · traded Sep 29
Close on filing date $25.31
Nicholas Conrad Smith · PRESIDENT AND CFO
PRESIDENT AND CFO
$3.6M soldOpen-market trades
1 filing in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Nicholas Conrad Smith | PRESIDENT AND CFO | $3.6M | — | 1 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Nicholas Conrad Smith PRESIDENT AND CFO | Sale | 134,886 | $26.45 | $3.6M | 24,060 |
GET /stocks/filings/vX/form-4?tickers=ANRO&filing_date.gte=2025-10-26&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"ANRO"
],
"issuer_cik": "0001999480",
"owner_cik": "0002009130",
"accession_number": "0002009130-26-000004",
"form_type": "4",
"filing_date": "2026-10-01",
"period_of_report": "2026-09-29",
"issuer_name": "Alto Neuroscience, Inc.",
"issuer_trading_symbol": "ANRO",
"owner_name": "Smith Nicholas Conrad",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "PRESIDENT AND CFO",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-09-30",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 23170,
"transaction_price_per_share": 25.7786,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 24946,
"transaction_value": 597290.162,
"not_subject_to_section_16": false,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "This transaction was pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 30, 2026."
}
]
},
{
"tickers": [
"ANRO"
],
"issuer_cik": "0001999480",
"owner_cik": "0002009130",
"accession_number": "0002009130-26-000004",
"form_type": "4",
"filing_date": "2026-10-01",
"period_of_report": "2026-09-29",
"issuer_name": "Alto Neuroscience, Inc.",
"issuer_trading_symbol": "ANRO",
"owner_name": "Smith Nicholas Conrad",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "PRESIDENT AND CFO",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-09-29",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 110830,
"transaction_price_per_share": 26.5826,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 24060,
"transaction_value": 2946149.5579999997,
"not_subject_to_section_16": false,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "This transaction was pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 30, 2026."
},
{
"id": "F2",
"description": "This price is a weighted average price. These securities were sold in multiple transactions at prices ranging from $26.5513 to $26.5902 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of securities sold at each separate price within the range set forth in this footnote."
}
]
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
Other insider activity (not market trades) · 7 records
- Option exercises4 records
- Tax withholding2 records
- Gifts1 record
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.
Frequently asked questions
Has Alto Neuroscience Inc.'s CEO sold stock?
No. Amit Etkin (CEO) made no open-market sales filed as CEO in the last 12 months.
How current is ANRO’s insider data?
These are ANRO Form 4 filings from the last year, refreshed daily. The Massive Form 4 API has the full, continuously updated record.
What counts as an open-market buy or sell?
Only purchases and sales at the market price. Option exercises, grants, gifts, and shares withheld for taxes are reported on Form 4 but are left out of the buy and sell totals.
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Track ANRO insider trades with your agent
This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:
Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for ANRO every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.
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