Are insiders buying ALXO stock?

Yes — 5 distinct insiders have bought ALXO (ALX ONCOLOGY HOLDINGS INC) on the open market, including 1 cluster buy where two or more insiders bought within a rolling window. The most recent qualifying activity was Feb 4, 2026.

How much ALXO stock have insiders bought?

Insiders have bought a combined $5.3M of ALXO across 6 open-market purchases, based on SEC Form 4 filings.

What is an insider cluster buy in ALXO?

A cluster buy is two or more distinct ALX ONCOLOGY HOLDINGS INC insiders — officers, directors, or 10% owners — each buying ALXO on the open market within a rolling window. ALXO has 1 detected cluster buy to date.

Where does this ALXO insider trading data come from?

Every figure is parsed directly from SEC Form 4 filings on EDGAR, and each purchase on this page links back to its original filing document.

ALXO insider buying

1 cluster buy

ALX ONCOLOGY HOLDINGS INC · Healthcare

When two or more insiders at ALX ONCOLOGY HOLDINGS INC buy ALXO on the open market around the same time, that clustered conviction is one of the highest-signal patterns in SEC filing data. Below is every cluster we've detected in ALXO plus the full record of qualifying open-market buys, each parsed directly from Form 4 filings and linked back to the source on SEC EDGAR.

Clusters

Distinct insiders

Total bought

$5.3M

Market cap

$294.7M

Detected clusters

Aug 18 – Sep 17, 2025
Detected Sep 17, 2025
High conviction2 insiders
Total bought
$157.9K
Market cap
$294.7M

All notable open-market buys in ALXO

Every open-market Form 4 purchase, newest first. Click an insider to see their full buying record across companies.

Date	Insider	Shares	Price	Value	Filing
Feb 2, 2026	GOODMAN COREY S Director, 10% Owner	3,184,713	$1.57	$5.0M	SEC ↗
Sep 17, 2025	Lettmann Jasoncluster Director, CHIEF EXECUTIVE OFFICER	71,163	$1.08	$76.9K	SEC ↗
Sep 16, 2025	Lettmann Jasoncluster Director, CHIEF EXECUTIVE OFFICER	21,070	$1.07	$22.5K	SEC ↗
Aug 18, 2025	Shantharam Harishcluster Chief Financial Officer	75,000	$0.78	$58.5K	SEC ↗
Dec 2, 2024	Hemrajani Rekha Director	30,000	$1.55	$46.5K	SEC ↗
Jun 13, 2024	GARCIA PETER S CHIEF FINANCIAL OFFICER	12,000	$8.53	$102.4K	SEC ↗

More Healthcare stocks with insider cluster buys

All insider buying in Healthcare →

ALXO insider buying — FAQ

Are insiders buying ALXO stock?: Yes — 5 distinct insiders have bought ALXO (ALX ONCOLOGY HOLDINGS INC) on the open market, including 1 cluster buy where two or more insiders bought within a rolling window. The most recent qualifying activity was Feb 4, 2026.
How much ALXO stock have insiders bought?: Insiders have bought a combined $5.3M of ALXO across 6 open-market purchases, based on SEC Form 4 filings.
What is an insider cluster buy in ALXO?: A cluster buy is two or more distinct ALX ONCOLOGY HOLDINGS INC insiders — officers, directors, or 10% owners — each buying ALXO on the open market within a rolling window. ALXO has 1 detected cluster buy to date.
Where does this ALXO insider trading data come from?: Every figure is parsed directly from SEC Form 4 filings on EDGAR, and each purchase on this page links back to its original filing document.

How we track insider buying in ALXO

We continuously poll SEC EDGAR for new Form 4 filings and parse every open-market purchase (transaction code P). A cluster is recorded when two or more distinct insiders — officers, directors, or 10% owners — each buy ALXO within a rolling window. We track clusters at every company size, from micro-caps to mega-caps. Every figure on this page traces back to an official filing; open any row to jump straight to the source document. What counts as a cluster buy?

This page is informational and reflects public filing data. It is not investment advice or a recommendation regarding ALXO.