🏆 Deal of the Month · August 2025
Riverlane raised USD 75 million in a Series C round at a post-money valuation of USD 325 million, closing in August 2025. The round was backed by a syndicate led by Planet First Partners alongside National Security Strategic Investment Fund, EDBI, Cambridge Innovation Capital, Amadeus Capital Partners, and Altair. This financing positions Riverlane to accelerate development and deployment of its quantum error correction technology.
Riverlane — key deal facts
| Company | Riverlane |
| Founded | 2016 |
| Headquarters | Cambridge, United Kingdom |
| Amount raised | USD 75 M |
| Valuation | USD 325 M |
| Round | Series C |
| Investors | Planet First Partners, National Security Strategic Investment Fund, EDBI, Cambridge Innovation Capital, Amadeus Capital Partners, Altair |
| Sectors | Computer, Information Technology, Quantum Computing, Software |
Who invested in Riverlane?
The Series C drew capital from Planet First Partners, the National Security Strategic Investment Fund, EDBI, Cambridge Innovation Capital, Amadeus Capital Partners, and Altair. The investor mix is notable for combining a national security-focused vehicle with a Singapore government-linked fund and established deep-tech specialists, reflecting both the strategic importance of quantum error correction and its international commercial interest. The participation of Cambridge Innovation Capital and Amadeus Capital Partners, both long-standing backers of UK deep tech, signals continued conviction from the company's existing investor base.
What does Riverlane do?
Riverlane is a quantum computing software company founded in 2016 by Steve Brierley, who serves as CEO. The company is headquartered in Cambridge, England, with additional offices in Boston and San Francisco. Its flagship product, Deltaflow, is a Quantum Error Correction Stack designed to detect and correct data errors in quantum systems at a rate of millions of corrections per second. Riverlane's primary customers include governments, quantum hardware manufacturers, and leading research institutions seeking to advance useful-scale quantum computing.
Riverlane valuation & multiples
No existing multiples analysis was provided for this deal. For context on valuation benchmarks applicable to quantum computing and deep-tech software businesses, readers can explore Venionaire DealMatrix's sector multiples pages covering Computer Software and Information Technology, where EV/Sales and EV/EBITDA ranges for comparable transactions are maintained and updated on an ongoing basis.
Explore the benchmarks: Series C Software.
Frequently asked questions
How much did Riverlane raise in its Series C?
Riverlane raised USD 75 million in its Series C round, which closed in August 2025.
What is Riverlane's valuation?
Riverlane's post-money valuation following the Series C is USD 325 million.
Who invested in Riverlane?
The Series C investors include Planet First Partners, National Security Strategic Investment Fund, EDBI, Cambridge Innovation Capital, Amadeus Capital Partners, and Altair.
When was Riverlane founded and where is it based?
Riverlane was founded in 2016 and is headquartered in Cambridge, United Kingdom.
Source: original announcement — read the full report.