/Investor DB

Japan Post Investment — Full Portfolio

3 tracked investments · listed companies and verified rows first

Atonarpatonarp.comAug 2019 · $50M

A company that manufactures mass spectrometry instruments for semiconductor and freeze-drying process monitoring and control at the molecular level.

Advanced ManufacturingAI & Machine LearningDeep TechHardwareSemiconductorsTokyo, JP

Sridhar Marcy Prakash(Founder, President and CEO)

Co-investorsCelesta CapitalGlobal Hands-On VCOpen Field CapitalINCJ, Ltd.SBI InvestmentWRVI Capital

Cloudiancloudian.comin𝕏Jan 2023 · $60M

Cloudian provides S3-native object storage and data management software for AI, analytics, and backup workloads, with immutable storage for ransomware protection and high-throughput storage for GPU cloud providers.

Cloud ComputingCybersecurityData & InfrastructureSan Mateo, US

Michael M. Tso(Executive Officer, Director)inHiroshi Ohta(Founder)inMichael Tso(Founder)

BoardJonathan Epstein(Director)David Milstein(Director)Ken Yasunaga(Director)

Co-investorsDG Ventures, Inc.Foothill VenturesGlobal Hands-On VCNTT DOCOMO VenturesEight Roads VenturesFoundation Capital+3 more

SDP JAPAN Inc.sdp-japan.comJun 2025

SDP Japan (Super Doctor Produce) supports the launch and operation of surgery-specialized hospitals and clinics, acting as a producer that connects doctors, patients, and healthcare institutions.

Digital HealthHealthtechTokyo, JP

Co-investorsGlobis Capital PartnersSpiral CapitalSpiral Innovation PartnersSumitomo Mitsui Trust Bank

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.