SEC Form 4
ALX Oncology Holdings Inc. (ALXO) insider trading
In the 12 months to Oct 23, 2026, 2 ALXO insiders reported open-market sales of $42.6K across 7 filings; one director bought $5.0M.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $42.6K
- 7 filings · 2 insiders
- Open-market purchases
- $5.0M
- 1 filing · Corey S. Goodman, Director
Who traded ALXO, and when
- Purchase
- Sale
ALXO daily close from Oct 23, 2025 to Oct 23, 2026, between $0.89 and $2.60, last $1.17. 7 sale and 1 purchase filings by 3 insiders, marked at their filing dates. Corey S. Goodman, Director: bought $5.0M across 1 filing, first filed Feb 4, 2026, last Feb 4, 2026. Jason Lettmann, CHIEF EXECUTIVE OFFICER: sold $31.0K across 2 filings, first filed Mar 23, 2026, last Aug 18, 2026. Shelly Pinto, SVP, FINANCE AND CAO: sold $11.6K across 5 filings, first filed Jan 7, 2026, last Aug 18, 2026.
Largest mark · tap a row for others
Corey S. Goodman · Director
Purchase $4,999,999
3,184,713 shares at $1.57 avg
Filed Feb 4, 2026 · traded Feb 2
Close on filing date $2.01
Corey S. Goodman · Director
Director
$5.0M boughtJason Lettmann · CHIEF EXECUTIVE OFFICER
CHIEF EXECUTIVE OFFICER
$31.0K soldShelly Pinto · SVP, FINANCE AND CAO
SVP, FINANCE AND CAO
$11.6K soldHas ALX Oncology Holdings Inc.'s CEO sold stock?
Yes. Jason Lettmann (CEO) sold 14,541 shares ($31.0K) between Mar 2026 and Aug 2026.
Open-market trades
8 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Corey S. Goodman | Director | — | $5.0M | 1 | — | |
| Jason Lettmann | CHIEF EXECUTIVE OFFICER | $31.0K | — | 2 | — | |
| Shelly Pinto | SVP, FINANCE AND CAO | $11.6K | — | 5 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Shelly Wong SVP, FINANCE AND CAO | Sale | 573 | $1.93 | $1.1K | 87,828 | |
traded | Jason Lettmann CHIEF EXECUTIVE OFFICER | Sale | 2,230 | $1.93 | $4.3K | 294,379 | |
traded | Shelly Wong SVP, FINANCE AND CAO | Sale | 1,404 | $2.04 | $2.9K | 88,401 | |
traded | Shelly Pinto SVP, FINANCE AND CAO | Sale | 903 | $2.17 | $2.0K | 86,805 | |
traded | Jason Lettmann CHIEF EXECUTIVE OFFICER | Sale | 12,311 | $2.17 | $26.7K | 293,609 | |
traded | Shelly Pinto SVP, FINANCE AND CAO | Sale | 565 | $2.27 | $1.3K | 87,708 | |
traded | Corey S. Goodman Director | Purchase | 3,184,713 | $1.57 | $5.0M | 8,453,038 | |
traded | Shelly Pinto SVP, FINANCE AND CAO | Sale | 3,925 | $1.11 | $4.4K | 88,273 |
GET /stocks/filings/vX/form-4?tickers=ALXO&filing_date.gte=2025-10-23&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"ALXO"
],
"issuer_cik": "0001810182",
"owner_cik": "0001688269",
"accession_number": "0001193125-26-355764",
"form_type": "4",
"filing_date": "2026-08-18",
"period_of_report": "2026-08-17",
"issuer_name": "ALX ONCOLOGY HOLDINGS INC",
"issuer_trading_symbol": "ALXO",
"owner_name": "Lettmann Jason",
"is_director": true,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "CHIEF EXECUTIVE OFFICER",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-08-17",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 2230,
"transaction_price_per_share": 1.93,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 294379,
"transaction_value": 4303.9,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "The reported shares were sold to satisfy the reporting person's tax obligations in connection with the vesting of restricted stock units."
},
{
"id": "F2",
"description": "Includes 3,000 shares acquired under the Issuer's employee stock purchase plan on June 30, 2026."
}
]
},
{
"tickers": [
"ALXO"
],
"issuer_cik": "0001810182",
"owner_cik": "0001857740",
"accession_number": "0001193125-26-355761",
"form_type": "4",
"filing_date": "2026-08-18",
"period_of_report": "2026-08-17",
"issuer_name": "ALX ONCOLOGY HOLDINGS INC",
"issuer_trading_symbol": "ALXO",
"owner_name": "Wong Shelly",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "SVP, FINANCE AND CAO",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-08-17",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 573,
"transaction_price_per_share": 1.93,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 87828,
"transaction_value": 1105.8899999999999,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "The reported shares were sold to satisfy the reporting person's tax obligations in connection with the vesting of restricted stock units."
}
]
}
]
}
// 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) · 1 record
- Tax withholding1 record
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
Build this yourself
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 ALXO 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.
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.