Spun out of Alphabet in 2022 (chaired by Eric Schmidt); applies AI + quantum/post-quantum cryptography to security, biopharma, and financial services. No public Series B/C found -- funding labels jump from Series A to Series D. The Information reported (Jul 2025) that SandboxAQ was tracking well below the revenue projections it gave Series E investors (~$10M actual vs. $90M/2025 and $250M/2026 projected), calling the company's earlier success narrative 'illusory' -- a real credibility flag against any steep valuation step-up. Separately, a Jan 2026 TechCrunch report describes a wrongful-termination suit alleging CEO Jack Hidary misused funds and gave misleading financial information to investors (SandboxAQ calls the suit an extortion attempt) -- unresolved, relevant context for diligence.
| Round | Date | Valuation | Lead |
|---|---|---|---|
| Series D | 2024-12-18 | $5.6B | Undisclosed -- SandboxAQ's own press release and Bloomberg/HPCwire/TechCrunch coverage list investors (Fred Alger Management, T. Rowe Price, Mumtalakat, Parkway Venture Capital, Breyer Capital, Rizvi Traverse, S32, USIT/Thomas Tull, Ava Investors, Eric Schmidt, Marc Benioff, David Siegel, Yann LeCun, IQT) without naming a lead |
| Series E | 2025-04-04 | $5.8B+3% | Undisclosed -- SandboxAQ's own press release names new (Ray Dalio, Horizon Kinetics, BNP Paribas, Google, NVIDIA) and existing participants without naming a lead |
No upcoming rounds currently reported.
| Status | S-1 Not Filed |
|---|---|
| Timing | 3-5 years (marketplace speculation) |
| Notes | CEO Jack Hidary has discussed the broader 2026 IPO market (SpaceX, OpenAI, Anthropic) on CNBC but hasn't committed to a SandboxAQ timeline. |
| Source | CNBC, Mar 26 2026; Forge Global / AccessIPOs commentary (secondary-market speculation) |
These are cited news signals only, not a PrePost prediction — year/valuation forecasting is on the roadmap but not live yet.
Transparent, formula-based composite (not machine-learned) of five signals: raise velocity, round acceleration, secondary premium/discount vs. the last primary round, up-round streak, and freshness of the last known mark.