{"city":"Boston","country":"US","filedDate":"2026-08-04","filingSourceUrl":"https://www.sec.gov/Archives/edgar/data/2146615/000214661526000001/primary_doc.xml","firstSaleDate":"2026-07-30","fundNumber":"IX","investorCount":47,"managers":["alex-finkelstein-4","fraser-kelton-2","jeremy-philips-4","santo-politi-4"],"name":"Spark Capital Founders' Fund IX, L.P.","region":"boston","slug":"spark-capital-founders-fund-ix-l-p","soldUsd":10119000,"sources":[{"fact":"fund","publisher":"SEC EDGAR","retrievedAt":"2026-09-28","status":"sourced","url":"https://www.sec.gov/Archives/edgar/data/2146615/000214661526000001/primary_doc.xml"}],"targetUsd":10119000,"updatedAt":"2026-09-28"}