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Lyell Immunopharma (LYEL) R&D spending by quarter

Lyell Immunopharma's R&D spending was $52.2M in Q4 2025 (fourth quarter 2025), +50% from Q2 2025. Over the last 3 quarters it ranged from $34.9M (Q2 2025) to $52.2M (Q4 2025).

Lyell Immunopharma R&D spending by quarterLyell Immunopharma R&D spending by quarter$43.4MQ1 2025$34.9MQ2 2025$52.2MQ4 2025
QuarterR&D spendingQ/QY/Y
Q4 2025$52.2M+50%—
Q2 2025$34.9M-20%—
Q1 2025$43.4M——

Q4 2025 at a glance

Lyell Immunopharma, Q4 2025: revenue $6K (-46% year over year), net loss $141M, operating cash flow −$32.3M. The chart follows the revenue to costs, profit and cash.

Questions

What is Lyell Immunopharma's R&D spending?

Lyell Immunopharma's R&D spending was $52.2M in Q4 2025 (fourth quarter 2025), +50% from Q2 2025.

How has Lyell Immunopharma's R&D spending changed?

Over the last 3 quarters it ranged from $34.9M (Q2 2025) to $52.2M (Q4 2025).

Q4 2025 results → · How Lyell Immunopharma makes money →