Cohorts of 2021

Companies whose accelerator cohort started in 2021. 1,685 companies.

CompanyClusterProgramStatusLast signal
Aer

Compound compliance: the central hub for meeting SEC obligations

Security and complianceSEC compliance management platformY CombinatorS21Acquired2026-08-23
Keyri

Secure fraud prevention and authentication platform for developers

Security and complianceDevice fingerprinting and fraud preventionY CombinatorS21Acquiredchecked 2026-08-17
Pactima

Live video signing for real-time agreements

Security and complianceeSignature and document verificationY CombinatorS21Acquiredchecked 2026-08-23
Tarsal

Data pipeline for your security data lake.

Security and complianceSecurity data pipeline infrastructureY CombinatorS21Acquired2026-08-23
TelivyAI

Automate your cyber security risk assessments

Security and complianceAI cyber risk assessment platformY CombinatorS21Acquired2026-08-23
CYBAVO Pte. Ltd.

Operator of a crypto custody firm intended to provide advanced digital asset custody by developing a custom operating system. The company provides blockchain security solutions via a patented encryption technology, and a highly secure sandboxed environment to deliver its suite of solutions, thereby helping clients easily manage digital assets and prevent malicious attacks, theft, and loss.

Security and complianceCrypto asset custody and security500 Global500G GA 28Acquiredchecked 2026-08-17
StacksiAI

Automated Answers to Security Questionnaires

Security and complianceSecurity questionnaire automationY CombinatorW21Acquiredchecked 2026-08-17
PopsixleAI

AI-Powered Legal Data Software

Security and compliancelegal data intelligence platformTechstarsTS 2021Acquiredchecked 2026-08-23