Are insiders buying XLO stock?

Yes — 3 distinct insiders have bought XLO (Xilio Therapeutics, 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 Mar 30, 2026.

How much XLO stock have insiders bought?

Insiders have bought a combined $2.3M of XLO across 6 open-market purchases, based on SEC Form 4 filings.

What is an insider cluster buy in XLO?

A cluster buy is two or more distinct Xilio Therapeutics, Inc. insiders — officers, directors, or 10% owners — each buying XLO on the open market within a rolling window. XLO has 1 detected cluster buy to date.

Where does this XLO 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.

XLO insider buying

1 cluster buy

Xilio Therapeutics, Inc. · Healthcare

When two or more insiders at Xilio Therapeutics, Inc. buy XLO 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 XLO 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

$2.3M

Market cap

$56.5M

Detected clusters

Jun 16 – Jun 17, 2025
Detected Jun 17, 2025
High conviction2 insiders
Total bought
$73.0K
Market cap
$56.5M

All notable open-market buys in XLO

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
Mar 26, 2026	Shannon James Samuel Director	5,000	$8.79	$43.9K	SEC ↗
Jun 17, 2025	Shannon James Samuelcluster Director	25,000	$0.69	$17.3K	SEC ↗
Jun 16, 2025	Shannon James Samuelcluster Director	45,000	$0.69	$31.0K	SEC ↗
Jun 16, 2025	Russo Renecluster Director, PRESIDENT AND CEO	36,289	$0.68	$24.7K	SEC ↗
Dec 18, 2024	GILEAD SCIENCES, INC. 10% Owner	1,759,978	$1.04	$1.8M	SEC ↗
Apr 2, 2024	GILEAD SCIENCES, INC. 10% Owner	485,250	$0.76	$368.8K	SEC ↗

More Healthcare stocks with insider cluster buys

All insider buying in Healthcare →

XLO insider buying — FAQ

Are insiders buying XLO stock?: Yes — 3 distinct insiders have bought XLO (Xilio Therapeutics, 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 Mar 30, 2026.
How much XLO stock have insiders bought?: Insiders have bought a combined $2.3M of XLO across 6 open-market purchases, based on SEC Form 4 filings.
What is an insider cluster buy in XLO?: A cluster buy is two or more distinct Xilio Therapeutics, Inc. insiders — officers, directors, or 10% owners — each buying XLO on the open market within a rolling window. XLO has 1 detected cluster buy to date.
Where does this XLO 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 XLO

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 XLO 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 XLO.