Substack
Last verified 2026-04-30. JSON
The funding figures on this page are attributed, not sourced: a publisher is on record but no document URL is. How we mark provenance.
| Total raised | $100.0Mattributed |
|---|---|
| Latest round | series-c, $100.0M, 2025-07-17attributed |
| Founded | 2017 |
| Headquarters | San Francisco |
| Industry | consumer |
| Stage | series-b+ |
| Website | substack.com |
Substack is a publishing and subscription platform that lets creators publish newsletters, posts, podcasts, and chat, and earn directly from paying subscribers. It serves writers, journalists, and other content creators. Its differentiator is a direct reader-subscription model that frees creators from advertising and publishing intermediaries.
Funding rounds
| Date | Round | Amount | Lead |
|---|---|---|---|
| 2025-07-17 | series-c | $100.0M | undisclosed |
Detected tech stack
Cloudflare, Express, React Router 7.6.2, Substack, Cloudflare Bot Management, Vercel Speed Insights, React, Node.js, mathjax 2.7.9, Remix
Provenance
| Fact | Status | Basis |
|---|---|---|
| Series C, $100.0M | attributed | news-misc named as publisher. No document URL on file. |
| Total raised $100.0M | attributed | news-misc named as publisher. No document URL on file. |
| Company existence | sourced | Y Combinator named as publisher. Document, retrieved 2026-09-17. |
| Description | self-reported | substack.com, read 2026-04-30 |
Change history
| Date | Fact | Change | Basis |
|---|---|---|---|
| 2026-09-24Existence: self-reported → sourced, Y Combinator, document, retrieved 2026-09-17 | Existence | self-reported → sourced | Y Combinator, document, retrieved 2026-09-17 |
Records begin 2026-09-24. All changes