{"cik":"0001919306","entityType":"other","sic":"","sicDescription":"","ownerOrg":null,"insiderTransactionForOwnerExists":0,"insiderTransactionForIssuerExists":0,"name":"Alterra IOS Venture II Master, LP","tickers":[],"exchanges":[],"ein":"873334615","lei":null,"description":"","website":"","investorWebsite":"","category":"","fiscalYearEnd":"1231","stateOfIncorporation":"DE","stateOfIncorporationDescription":"DE","addresses":{"mailing":{"street1":"720 FAYETTE STREET, SUITE 700","street2":null,"city":"CONSHOHOCKEN","stateOrCountry":"PA","zipCode":"19428","stateOrCountryDescription":"PA","isForeignLocation":null,"foreignStateTerritory":null,"country":null,"countryCode":null},"business":{"street1":"720 FAYETTE STREET, SUITE 700","street2":null,"city":"CONSHOHOCKEN","stateOrCountry":"PA","zipCode":"19428","stateOrCountryDescription":"PA","isForeignLocation":null,"foreignStateTerritory":null,"country":null,"countryCode":null}},"phone":"(215) 667-6830","flags":"","formerNames":[],"filings":{"recent":{"accessionNumber":["0001919306-22-000002","0001919306-22-000001"],"filingDate":["2022-12-22","2022-03-25"],"reportDate":["",""],"acceptanceDateTime":["2022-12-22T18:41:04.000Z","2022-03-25T21:01:35.000Z"],"act":["33","33"],"form":["D/A","D"],"fileNumber":["021-439053","021-439053"],"filmNumber":["221481404","22772196"],"items":["06b,3C,3C.5","06b,3C,3C.1"],"core_type":["D/A","D"],"size":[11630,9717],"isXBRL":[0,0],"isInlineXBRL":[0,0],"isXBRLNumeric":[null,null],"primaryDocument":["xslFormDX01/primary_doc.xml","xslFormDX01/primary_doc.xml"],"primaryDocDescription":["",""]},"files":[]}}