Xilio Therapeutics, Inc. (XLO)
NASDAQ: XLO · Real-Time Price · USD
8.85
-0.04 (-0.45%)
At close: Jun 26, 2026, 4:00 PM EDT
9.05
+0.20 (2.26%)
After-hours: Jun 26, 2026, 4:10 PM EDT

Company Description

Xilio Therapeutics, Inc., a clinical-stage biotechnology company, engages in the discovery and development of masked immuno-oncology therapies.

The company’s pipeline includes XTX501, a bispecific PD-1 / masked IL-2, for patients with metastatic non-small cell lung cancer; Efarindodekin alfa, an investigational, masked IL-12, that is in Phase 2 clinical trial for patients with advanced solid tumors; and Vilastobart, an investigational tumor-activated, Fc-enhanced, high affinity binding anti-CTLA-4 monoclonal antibody.

The company was founded in 2016 and is headquartered in Waltham, Massachusetts.

Xilio Therapeutics, Inc.
Xilio Therapeutics logo
Country United States
Founded 2016
IPO Date Oct 22, 2021
Industry Biotechnology
Sector Healthcare
Employees 76
CEO Rene Russo

Contact Details

Address:
828 Winter Street, Suite 300
Waltham, Massachusetts 02451
United States
Phone 857 524 2466
Website xiliotx.com

Stock Details

Ticker Symbol XLO
Exchange NASDAQ
Stock Type Common Stock
Fiscal Year January - December
Reporting Currency USD
IPO Price $16.00
CIK Code 0001840233
CUSIP Number 98422T209
ISIN Number US98422T2096
Employer ID 85-1623397
SIC Code 2834

Key Executives

Name Position
Dr. Rene Russo BCPS, Pharm.D. President, Chief Executive Officer and Director
Christopher Frankenfield Chief Financial Officer and Chief Operating Officer

Latest SEC Filings

Date Type Title
Jun 12, 2026 8-K Current Report
May 29, 2026 EFFECT Notice of Effectiveness
May 27, 2026 S-3/A [Amend] Registration statement under Securities Act of 1933
May 15, 2026 SCHEDULE 13G Filing
May 15, 2026 SCHEDULE 13G/A Filing
May 15, 2026 SCHEDULE 13G/A Filing
May 15, 2026 SCHEDULE 13G Filing
May 12, 2026 S-3 Registration statement under Securities Act of 1933
May 12, 2026 10-Q Quarterly Report
May 12, 2026 8-K Current Report