Filing Flows › ClearSign Technologies (CLIR) › R&D spending
ClearSign Technologies (CLIR) R&D spending by quarter
ClearSign Technologies' R&D spending was $448K in Q2 2026 (second quarter 2026), +80% from Q1 2026. Over the last 7 quarters it ranged from $247K (Q2 2025) to $459K (Q4 2024).
| Quarter | R&D spending | Q/Q | Y/Y |
|---|---|---|---|
| Q2 2026 | $448K | +80% | +81% |
| Q1 2026 | $249K | -40% | -44% |
| Q4 2025 | $418K | +35% | -9% |
| Q3 2025 | $310K | +26% | — |
| Q2 2025 | $247K | -45% | — |
| Q1 2025 | $447K | -3% | — |
| Q4 2024 | $459K | — | — |
Q2 2026 at a glance
ClearSign Technologies, Q2 2026: revenue $560K (+321% year over year), operating margin -267.5%, net loss $1.3M, operating cash flow −$1.2M. The chart follows the revenue to costs, profit and cash.
Questions
What is ClearSign Technologies' R&D spending?
ClearSign Technologies' R&D spending was $448K in Q2 2026 (second quarter 2026), +80% from Q1 2026.
How has ClearSign Technologies' R&D spending changed?
Over the last 7 quarters it ranged from $247K (Q2 2025) to $459K (Q4 2024).
Q2 2026 results → · How ClearSign Technologies makes money →