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Substack

Substack is an online platform providing publishing, payment, analytics, and design tools for subscription-based newsletters, podcasts, and video content.

Series BTechnologySan Francisco, CA1000+ employees

Stage

Series B

Status

Active

Founders & team

Co-founder, CEO

Co-founder, CTO

Head of Engineering

Head of Sales

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Growth signals

Web traffic

Search interest

Social followers

Glassdoor rating

News mentions

Gov contracts

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About this data

FlareSight surfaces funding data from SEC Form D filings within hours of submission. Browse our full startup funding database to find more recently funded companies.