Lyell Immunopharma, Inc. (LYEL)
NASDAQ: LYEL · Real-Time Price · USD
21.48
-1.14 (-5.06%)
At close: Apr 28, 2026, 4:00 PM EDT
21.49
+0.01 (0.07%)
After-hours: Apr 28, 2026, 4:04 PM EDT

Company Description

Lyell Immunopharma, Inc., a clinical-stage cell therapy company, develops chimeric antigen receptor (CAR) T-cell product candidates for patients with hematologic malignancies and solid tumors.

The company’s lead product candidate include rondecabtagene autoleucel, an autologous dual‑targeting CD19/CD20 CAR T‑cell therapy in development, which is in pivotal PiNACLE trial in the 3L+ setting and in a Phase 1/2 clinical trial in the 2L setting, as well as a second pivotal trial, PiNACLE-H2H, which is a Phase 3 head-to-head CAR T cell therapy randomized controlled trial of ronde-cel for LBCL in the 2L setting for the treatment of large B-cell lymphoma; and LYL273, a GCC-targeted CAR T-cell product candidate enhanced with CD19 CAR expression and controlled cytokine release designed to improve CAR T-cell expansion, immune cell infiltration, and cancer cell killing in the hostile solid tumor microenvironment, which is in Phase 1 clinical trial for the treatment of refractory metastatic colorectal cancer.

The company develops therapies using various approaches, such as c-Jun overexpression and NR4A3 gene knockout, to endow functional resistance to exhaustion; Epi‑R to generate population of stem-like T cells with reduced exhaustion and improved proliferation and antitumor activity; and CD62L positive enrichment to generate CAR T cells with enhanced antitumor activity.

Lyell Immunopharma, Inc. was incorporated in 2018 and is headquartered in South San Francisco, California.

Lyell Immunopharma, Inc.
Lyell Immunopharma logo
Country United States
Founded 2018
IPO Date Jun 17, 2021
Industry Biotechnology
Sector Healthcare
Employees 300
CEO Lynn Seely

Contact Details

Address:
201 Haskins Way, Suite 101
South San Francisco, California 94080
United States
Phone 650 695 0677
Website lyell.com

Stock Details

Ticker Symbol LYEL
Exchange NASDAQ
Fiscal Year January - December
Reporting Currency USD
IPO Price $17.00
CIK Code 0001806952
CUSIP Number 55083R203
ISIN Number US55083R2031
Employer ID 83-3006753
SIC Code 2834

Key Executives

Name Position
Dr. Lynn Seely M.D., Ph.D. Principal Executive Officer, President, Chief Executive Officer and Director
Dr. Richard D. Klausner M.D. Founder and Executive Chairman
Stephen J. Hill Chief Operating Officer
Prof. Stanley R. Riddell M.D. Founder and Scientific Advisor
Dr. Crystal L. Mackall M.D. Founder and Scientific Advisor
Smital Shah M.B.A. Principal Financial Officer, Chief Financial Officer and Chief Business Officer
Nellie Dillery Director of Accounting
Dr. Gary K. Lee Ph.D. Chief Scientific Officer
Mark A. Meltz J.D. General Counsel and Corporate Secretary
Ann Tomlin Chief Human Resources Officer

Latest SEC Filings

Date Type Title
Apr 24, 2026 ARS Filing
Apr 24, 2026 DEFA14A Additional definitive proxy soliciting materials and Rule 14(a)(12) material
Apr 24, 2026 DEF 14A Other definitive proxy statements
Apr 21, 2026 SCHEDULE 13G Filing
Apr 14, 2026 EFFECT Notice of Effectiveness
Apr 3, 2026 S-3 Registration statement under Securities Act of 1933
Mar 12, 2026 S-8 Securities to be offered to employees in employee benefit plans
Mar 12, 2026 10-K Annual Report
Mar 12, 2026 8-K Current Report
Mar 9, 2026 8-K Current Report