org · case file
Newsletter/subscription publishing platform (founded 2017)
Newsletter and subscription publishing platform founded in 2017; reached a $1.1B valuation in 2025 after multiple Andreessen Horowitz-led rounds. [Substack - Wikipedia ↗]
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Every sourced counterparty, one row each (edges to the same party are merged and show the largest documented amount). Search, filter by type or direction, and sort. Money figures are FEC-sourced where marked.
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Entries here reflect documented financial, professional, or organizational ties drawn from public records — campaign-finance filings, corporate and regulatory disclosures, and reporting. Appearing in this graph is not an allegation of wrongdoing. Every claim shown links to its source. How we source this · Request a correction