Xilio Therapeutics, Inc. (XLO) Insider Trading & SEC Filings

Updated Jul 16, 2026 · Last SEC filing 2026-06-12

Xilio Therapeutics, Inc. (XLO) has filed 7 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-06-12. 2 Form 8-K material event filings were reported by XLO in the last 90 days. InsiderAlpha tracks every XLO SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.

About Xilio Therapeutics, Inc. (XLO)

SEC CIK	0001840233

90-Day SEC Filing Activity

Form 4 filings (90d)	7
Form 8-K filings (90d)	2
Latest Form 4 filing	2026-06-12

Recent XLO Insider Transactions (Form 4)

Date	Insider	Role	Transaction	Shares	Price	Value	Filing
2026-03-26	Shannon James Samuel	Insider	P — Open-market purchase	5.0K	$8.79	$44K	SEC
2026-01-02	Brennan Kevin M.	SVP, FINANCE AND ACCOUNTING	S — Open-market sale [10b5-1]	1.8K	$0.64	$1K	SEC
2026-01-02	Frankenfield Christopher James	Chief Financial Officer	S — Open-market sale [10b5-1]	7.0K	$0.64	$5K	SEC
2026-01-01	Russo Rene	PRESIDENT AND CEO	M — Option exercise	44.2K	—	—	SEC
2026-01-01	Brennan Kevin M.	SVP, FINANCE AND ACCOUNTING	M — Option exercise [10b5-1]	5.0K	—	—	SEC
2026-01-01	Luptakova Katarina	CHIEF MEDICAL OFFICER	M — Option exercise	16.6K	—	—	SEC
2026-01-01	Frankenfield Christopher James	Chief Financial Officer	M — Option exercise [10b5-1]	19.4K	—	—	SEC
2024-12-18	GILEAD SCIENCES, INC.	10% Owner	P — Open-market purchase	1.76M	$1.04	$1.83M	SEC

All transactions sourced from SEC EDGAR Form 4 filings for Xilio Therapeutics, Inc. (XLO). Updated in real time as new filings are submitted to the SEC.

Most-Active XLO Insiders — Last 90 Days

Insider	Form 4 filings	Total transaction value
Bonstein Sara	1	—
Brennan Aoife	1	—
Curran Daniel J.	1	—
Xu Yuan	1	—
Shannon James Samuel	1	—

Recent XLO Form 8-K Material Events

2026-06-12 — Item 5.02, 5.07, 9.01 [SEC]
2026-05-12 — Item 2.02, 9.01 [SEC]
2026-04-16 — Item 5.02, 9.01 · Leadership · neutral [SEC]
Xilio Therapeutics elected Cheryl R. Blanchard, Ph.D., as a Class III director on April 15, 2026. Dr. Blanchard was appointed as chair of the Compensation Committee and member of the Audit Committee, with standard director compensation including annual cash fees and stock option
2026-03-23 — Item 2.02, 9.01 · Earnings · neutral [SEC]
Xilio Therapeutics announced its financial results for Q4 2025 and full year 2025, along with other business highlights. The filing provides standard quarterly and annual financial reporting without explicit beat/miss or guidance language.
2026-03-16 — Other · neutral [SEC]
Trading halt (T3) for XLO. XLO

Recent Insider Filings

2026-06-12 — Bello Akintunde Olatokumbo (Insider)
2026-06-12 — Shannon James Samuel (Insider)
2026-06-12 — Curran Daniel J. (Insider)
2026-06-12 — Xu Yuan (Insider)
2026-06-12 — ROSS ROBERT W. (Insider)

Form 4 Transaction Code Reference

SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in XLO insider filings:

P	Open-market purchase by the insider
S	Open-market sale by the insider
A	Grant, award, or other acquisition from the issuer
M	Exercise or conversion of derivative security (e.g. options)
F	Payment of exercise price or tax liability via share withholding
G	Bona-fide gift of securities
D	Disposition to the issuer (e.g. share buyback participation)
J	Other acquisition or disposition
X	Exercise of in-the-money or at-the-money derivative security
C	Conversion of derivative security
V	Transaction voluntarily reported earlier than required

XLO Insider Trading — FAQ

What is the latest insider trade for XLO?: Xilio Therapeutics, Inc. (XLO) had 7 insider filings in the last 90 days, with the most recent on 2026-06-12. InsiderAlpha tracks every Form 4, 10-K, 10-Q, and 8-K filing in real time.
How many insiders are buying XLO stock?: 0 insider purchases of XLO were filed in the last 90 days.
How many insiders are selling XLO stock?: 0 insider sales of XLO were filed in the last 90 days.
Where can I see XLO SEC filings (Form 4, 10-K, 10-Q, 8-K)?: InsiderAlpha aggregates every XLO SEC filing — Form 4 insider transactions, 10-K and 10-Q quarterly reports, and 8-K material event disclosures — in one timeline.

Learn More

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