Xilio Therapeutics, Inc.

Xilio Therapeutics, Inc.

XLO·NASDAQ

$8.46

-0.71%
HealthcareBiotechnology

Xilio Therapeutics, Inc., a clinical-stage biotechnology company, develops immunotherapies to improve the immune system of cancer patients. Its checkpoint inhibitor program includes XTX101, a clinical-stage, tumor-selective anti-CTLA-4 mAb that is in Phase 1/2 clinical trials in patients with solid tumors. The company also develops cytokine programs, which comprises XTX202, a modified form of IL-2; XTX301, an IL-12 product candidate; and XTX401, an IL-15 product candidate that are masked with a protein domain to prevent binding activity until cleaved off by tumor microenvironment (TME)-associated proteases. Xilio Therapeutics, Inc. was founded in 2016 and is headquartered in Waltham, Massachusetts.

At a Glance

Live Snapshot
Market Cap$50.61M
EPS-4.1900
P/E Ratio-21.38
Earnings Date08/13/2026
-42.09%
Return on Invested Capital
-69%
3Y-41.0%
5Y-87.0%
10Y+27.0%
-99.33%
Return on Equity
-70%
3Y+19.0%
5Y-110.0%
10Y+121.0%
-22.65%
Return on Assets
-72%
3Y-64.0%
5Y-85.0%
10Y-18.0%
Xilio Therapeutics, Inc.

Xilio Therapeutics, Inc. Management Team

XLO · NASDAQ
SC

Scott Coleman

Chief Development Officer

CF

Christopher Frankenfield

Chief Financial Officer & Chief Operating Officer

Compensation

$786,196

Born 1982(Age 44)
male
NM

Nathan McBride

Chief Information Officer

male
CH

Caroline Hensley

Chief Legal Officer

female
KL

Katarina Luptakova

Chief Medical Officer

Compensation

$661,890

Born 1976(Age 50)
UB

Uli Bialucha

Chief Scientific Officer

RR

Rene Russo

President, Chief Executive Officer & Director

Compensation

$966,228

Born 1975(Age 51)
KB

Kevin Brennan

Senior Vice President of Finance & Accounting

Born 1970(Age 56)
male
Rd

Ruth du Moulin

Senior Vice President of Medical Affairs

female
xlo

Xilio Therapeutics, Inc. Insider Positioning

XLO · NASDAQ

During the last 12 months, insiders have purchased $118K and sold $6K worth of XLO shares, resulting in $113K of net buying activity.

3 Months

Bought

5.0K

43.95K

Sold

0

0.00

Net Activity

+44K

+$44K

3-6 Months

Bought

3.7M

373.00

Sold

8.9K

5.70K

Net Activity

-5K

-$5K

6-9 Months

Bought

0

0.00

Sold

0

0.00

Net Activity

+0

+$0

9-12 Months

Bought

13.4M

74.10K

Sold

0

0.00

Net Activity

+74K

+$74K

Top Buyers

1
SJS

Shannon James Samuel

Director

75.0K shares3 transactions

$92K

2
RR

Russo Rene

Director, Officer: President And Ceo

36.3K shares1 transactions

$25K

3
GSI

Gilead Sciences, Inc.

10 Percent Owner

17.1M shares2 transactions

$2K

Top Sellers

1
FCJ

Frankenfield Christopher James

Officer: Chief Financial Officer

7.0K shares1 transactions

$5K

2
BKM

Brennan Kevin M.

Officer: Svp, Finance And Accounting

1.8K shares1 transactions

$1K

Insider Activity Analysis

Net Insider Sentiment

Bullish

Strong bullish signal with $113K net buying. Insiders are aggressively accumulating shares, suggesting significant confidence in future prospects.

Buy/Sell Ratio

20.79:1

Exceptional buy/sell ratio. Buying dramatically outweighs selling—one of the strongest possible insider signals.

Recent Trend (3 Months)

$44K

Very strong recent buying momentum. Recent insider purchases significantly outpace sales, suggesting near-term optimism.

Insider Participation

Moderate Buying

3 insider buyers vs. 2 sellers. More insiders buying than selling indicates positive sentiment.

Insider Activity Insight

Strong confluence of bullish signals: High buy/sell ratio, multiple insiders participating, and recent buying momentum all point to significant insider confidence. This level of coordinated buying often precedes positive developments.

SEC Filings

XLO - Filing history and reports

Filing TypeFiling DatePeriod EndingFiscal YearActions
DEF 14A

DEF 14A 2026

N/A

April 28, 2026
June 10, 2026
2026
DEF 14A

DEF 14A 2026

N/A

January 26, 2026
February 23, 2026
2026
DEF 14A

DEF 14A 2025

N/A

October 20, 2025
November 21, 2025
2025
DEF 14A

DEF 14A 2025

N/A

April 28, 2025
June 10, 2025
2025
DEF 14A

DEF 14A 2024

N/A

April 25, 2024
June 13, 2024
2024
DEF 14A

DEF 14A 2023

N/A

April 25, 2023
June 08, 2023
2023
DEF 14A

DEF 14A 2022

N/A

April 26, 2022
June 09, 2022
2022
Showing 1 to 7 of 7 filings