{"cik":"0001734604","entityType":"other","sic":"","sicDescription":"","ownerOrg":"","insiderTransactionForOwnerExists":0,"insiderTransactionForIssuerExists":0,"name":"HarbourVest Partners XI Buyout Fund L.P.","tickers":[],"exchanges":[],"ein":"000000000","lei":null,"description":"","website":"","investorWebsite":"","category":"","fiscalYearEnd":"1231","stateOfIncorporation":"DE","stateOfIncorporationDescription":"DE","addresses":{"mailing":{"street1":"HARBOURVEST PARTNERS, LLC","street2":"ONE LINCOLN STREET, SUITE 1700","city":"BOSTON","stateOrCountry":"MA","zipCode":"02111","stateOrCountryDescription":"MA","isForeignLocation":0,"foreignStateTerritory":null,"country":null,"countryCode":null},"business":{"street1":"HARBOURVEST PARTNERS, LLC","street2":"ONE LINCOLN STREET, SUITE 1700","city":"BOSTON","stateOrCountry":"MA","zipCode":"02111","stateOrCountryDescription":"MA","isForeignLocation":null,"foreignStateTerritory":null,"country":null,"countryCode":null}},"phone":"617-348-3707","flags":"","formerNames":[],"filings":{"recent":{"accessionNumber":["0001193125-25-191096","0001193125-25-120935","0001193125-24-281924","0001193125-24-237397","0001193125-24-110442","0001734604-19-000002","0001734604-18-000002"],"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","2019-03-19T15:07:09.000Z","2018-03-20T15:57:27.000Z"],"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":["812-15801-176","812-15801-176","812-15568-266","812-15568-266","812-15568-266","021-308094","021-308094"],"filmNumber":["251272371","25955490","241562374","241370443","24871966","19690594","18701153"],"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":[1706848,1704661,1511489,1481134,1516597,21032,22583],"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":[]}}