/Investor DB

1517 — 2025 Investments

2 investments dated 2025 · listed companies and verified rows first · show all

Lambda Labslambda.aiin𝕏Feb 2025 · $480M

Lambda operates cloud infrastructure and supercomputers purpose-built for AI training and inference, serving hyperscalers, enterprises, and frontier AI labs.

AI & Machine LearningCloud ComputingData & InfrastructureSan Francisco, US

Stephen Balaban(Founder)inBenhamin Nelson(Executive Officer)Austen Allred(Executive Officer, Director)ML engineers in(Founder)Michael Balaban(Founder)

BoardJessica Verrilli(Director)

Co-investorsAccess Ventures (New York)Air Street CapitalAlpha Square GroupAlumni VenturesArctic VenturesB Capital Group+40 more

Zeno Power Systemszenopower.comin𝕏Jan 2025

Zeno develops nuclear batteries that convert heat from decaying radioisotopes into electricity for extended-duration applications in space and deep-sea environments where conventional power sources are inadequate.

CleantechDeep TechDefense TechEnergyHardwareSpace TechArlington, US

Jonathan Segal(Founder)inTyler Bernstein(Founder)inJake Matthews(Founder)

BoardArjun Sethi(Director)inSam Rohr(Director)John M. Richardson(Director)

Co-investors7percent VenturesAIN VenturesAlumni VenturesBalerion Space VenturesBeyond Earth VenturesDCVC (Data Collective)+22 more

Rows marked “SEC filing” are inferred from directors named on the company's SEC Form D — public regulatory data, not a portfolio list published by the firm.