{"cik":"0002080940","entityType":"other","sic":"","sicDescription":"","ownerOrg":"","insiderTransactionForOwnerExists":0,"insiderTransactionForIssuerExists":0,"name":"Heartland Ventures S12 LLC","tickers":[],"exchanges":[],"ein":"994382957","lei":null,"description":"","website":"","investorWebsite":"","category":"","fiscalYearEnd":"1231","stateOfIncorporation":"DE","stateOfIncorporationDescription":"DE","addresses":{"mailing":{"street1":"4131 WORTH AVE.","street2":"STE 210","city":"COLUMBUS","stateOrCountry":"OH","zipCode":"43219","stateOrCountryDescription":"OH","isForeignLocation":0,"foreignStateTerritory":null,"country":null,"countryCode":null},"business":{"street1":"4131 WORTH AVE.","street2":"STE 210","city":"COLUMBUS","stateOrCountry":"OH","zipCode":"43219","stateOrCountryDescription":"OH","isForeignLocation":null,"foreignStateTerritory":null,"country":null,"countryCode":null}},"phone":"4143310555","flags":"","formerNames":[],"filings":{"recent":{"accessionNumber":["0002080940-26-000001"],"filingDate":["2026-03-09"],"reportDate":[""],"acceptanceDateTime":["2026-03-09T14:47:35.000Z"],"act":["33"],"form":["D"],"fileNumber":["021-575813"],"filmNumber":["26733646"],"items":["06b,3C,3C.1"],"core_type":["D"],"size":[7232],"isXBRL":[0],"isInlineXBRL":[0],"isXBRLNumeric":[null],"primaryDocument":["xslFormDX01/primary_doc.xml"],"primaryDocDescription":[""]},"files":[]}}