Lyell Immunopharma Inc.
LYEL | NASDAQ
$11.16
+$0.23 (+2.10%)
Sep 22, 2026, 12:17 PM ET · Market open
Company Profile
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.
Key Executives
| Name | Position |
|---|---|
| Lynn Seely | Principal Executive Officer, President, CEO & Director |
| Stephen J. Hill | Chief Operating Officer |
| Ann Tomlin | Chief Human Resources Officer |
| Crystal L. Mackall | Founder & Scientific Advisor |
| Gary Lee | Chief Scientific Officer |
| Mark A. Meltz | General Counsel & Corporate Secretary |
| Nellie Dillery | Director of Accounting |
| Richard D. Klausner | Founder & Executive Chairman |
| Smital Shah | Principal Financial Officer, CFO & Chief Business Officer |
| Stanley R. Riddell | Founder & Scientific Advisor |
Latest SEC Filings
| Date | Type | Title |
|---|---|---|
| Aug 25, 2026 | 4 | Filing |
| Aug 25, 2026 | 4 | Filing |
| Aug 25, 2026 | 4 | Filing |
| Aug 14, 2026 | SC 13G/A | [Amend] Statement of acquisition of beneficial own... |
| Aug 11, 2026 | 4 | Filing |
| Aug 11, 2026 | 4 | Filing |
| Aug 11, 2026 | 4 | Filing |
| Aug 11, 2026 | 4 | Filing |
| Aug 06, 2026 | 10-Q | Quarterly Report |
| Aug 06, 2026 | 8-K | Current Report |
Lyell Immunopharma Inc.
| Country | United States |
| IPO Date | Jun 16, 2021 |
| Industry | Biotechnology |
| Sector | Healthcare |
| Employees | 161 |
| CEO | Lynn Seely |
Contact Details
201 Haskins Way South San Francisco,
California 94080 United States
Stock Details
| Ticker Symbol | LYEL |
| Exchange | NASDAQ |
| Fiscal Year | January - December |
| Reporting Currency | USD |
| CIK Code | 0001806952 |
| CUSIP Number | 55083R203 |
| ISIN Number | US55083R2031 |
| SIC Code | 2834 |
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