Substack is a subscription-based newsletter publishing platform for independent writers.
Substack has raised $100.0M in total funding. The most recent round was Series C. The last funding was announced in July 2025.
Substack's investors include Andreessen Horowitz, Bond, Y Combinator, Quiet Capital, TCG.
Substack is headquartered in San Francisco, United States.
Substack is a subscription-based newsletter publishing platform for independent writers.
Substack is at the Series C stage.
Free to use in articles, research, and reference works. Stable URL — will not change. Data on this page last updated .
"Substack — Funding & Investors." VCBacked, July 17, 2025, https://www.vcbacked.co/company/substack. Accessed August 2, 2026.
VCBacked. (2025). Substack — Funding & Investors. Retrieved August 2, 2026, from https://www.vcbacked.co/company/substack
{{cite web |title=Substack — Funding & Investors |url=https://www.vcbacked.co/company/substack |website=VCBacked |access-date=August 2, 2026}}Profile data sourced and verified per the VCbacked methodology · Last funding round dated