{"cik":"0001734625","entityType":"other","sic":"","sicDescription":"","ownerOrg":"","insiderTransactionForOwnerExists":0,"insiderTransactionForIssuerExists":0,"name":"HarbourVest Partners XI Buyout AIF L.P.","tickers":[],"exchanges":[],"ein":"000000000","lei":null,"description":"","website":"","investorWebsite":"","category":"","fiscalYearEnd":"1231","stateOfIncorporation":"X0","stateOfIncorporationDescription":"United Kingdom","addresses":{"mailing":{"street1":"50 LOTHIAN ROAD","street2":"FESTIVAL SQUARE","city":"EDINBURGH","stateOrCountry":null,"zipCode":null,"stateOrCountryDescription":null,"isForeignLocation":1,"foreignStateTerritory":null,"country":"United Kingdom","countryCode":"X0"},"business":{"street1":"50 LOTHIAN ROAD","street2":"FESTIVAL SQUARE","city":"EDINBURGH","stateOrCountry":null,"zipCode":null,"stateOrCountryDescription":null,"isForeignLocation":1,"foreignStateTerritory":null,"country":"United Kingdom","countryCode":"X0"}},"phone":"44 131 473 6000","flags":"","formerNames":[],"filings":{"recent":{"accessionNumber":["0001193125-25-191096","0001193125-25-120935","0001193125-24-281924","0001193125-24-237397","0001193125-24-110442","0001734625-19-000002","0001734625-18-000002"],"filingDate":["2025-08-28","2025-05-15","2024-12-19","2024-10-15","2024-04-24","2019-03-19","2018-03-20"],"reportDate":["","","","","","",""],"acceptanceDateTime":["2025-08-28T19:25:42.000Z","2025-05-15T21:12:09.000Z","2024-12-19T19:19:12.000Z","2024-10-15T14:50:28.000Z","2024-04-24T21:31:36.000Z","2019-03-19T15:21:54.000Z","2018-03-20T16:03:39.000Z"],"act":["IC","IC","IC","IC","IC","33","33"],"form":["40-APP/A","40-APP","40-APP/A","40-APP/A","40-APP","D/A","D"],"fileNumber":["812-15801-175","812-15801-175","812-15568-198","812-15568-198","812-15568-198","021-308097","021-308097"],"filmNumber":["251272370","25955489","241562306","241370397","24871898","19690633","18701169"],"items":["","","","","","06b,3C,3C.7","06b,3C,3C.7"],"core_type":["40-APP/A","40-APP","40-APP/A","40-APP/A","40-APP","D/A","D"],"size":[1706848,1704661,1511489,1481134,1516597,8400,9164],"isXBRL":[0,0,0,0,0,0,0],"isInlineXBRL":[0,0,0,0,0,0,0],"isXBRLNumeric":[null,null,null,null,null,null,null],"primaryDocument":["d74034d40appa.htm","d938796d40app.htm","d844321d40appa.htm","d861061d40appa.htm","d786402d40app.htm","xslFormDX01/primary_doc.xml","xslFormDX01/primary_doc.xml"],"primaryDocDescription":["40-APP/A","40-APP","40-APP/A","40-APP/A","40-APP","",""]},"files":[]}}