Filing Flows › Quantum-Si (QSI) › Q4 2025
Quantum-Si (QSI) Q4 2025 earnings results (fourth quarter 2025)
10-K filed Mar 3, 2026
Quantum-Si (QSI) reported revenue of $451K for the fourth quarter 2025 (Q4 2025), -62% from a year earlier and -18% from the quarter before.
Quantum-Si, Q4 2025: revenue $451K (-62% year over year), net loss $17.6M, operating cash flow −$16.3M. The chart follows the revenue to costs, profit and cash.
| Q4 2025 | Amount | Q/Q | Y/Y |
|---|---|---|---|
| Revenue | $451K | -18% | -62% |
| Operating profit | −$21.1M | — | — |
| Net earnings | −$17.6M | — | — |
| Operating cash flow | −$16.3M | — | — |
What changed
Revenue was $451K in Q4 2025, down 62% year over year and down 18% from the previous quarter. Product was the largest line at 92% of revenue.
Gross margin was 27.1%, down 24.1 points from a year earlier. Operating costs exceeded revenue by $21.1M, an operating margin of -4677.2%. Operating expenses fell 32% while revenue fell 62%. The quarter ended with a net loss of $17.6M, narrower than the previous quarter's $35.7M loss.
Operating cash flow was −$16.3M. Non-cash charges added back $1.2M of depreciation and amortization and $2.7M of share-based compensation. Working capital and other items used $2.6M. Capital expenditures of −$17K exceeded it, leaving free cash flow of −$16.3M.
Questions
What was Quantum-Si's revenue in the fourth quarter 2025?
Quantum-Si (QSI) reported revenue of $451K for the fourth quarter 2025 (Q4 2025), -62% from a year earlier and -18% from the quarter before.
Source: Quantum-Si 10-K on SEC EDGAR.