{"cik":"0001870907","entityType":"other","sic":"5990","sicDescription":"Retail-Retail Stores, NEC","ownerOrg":"07 Trade & Services","insiderTransactionForOwnerExists":0,"insiderTransactionForIssuerExists":0,"name":"Masterworks 066, LLC","tickers":[],"exchanges":[],"ein":"871369881","lei":null,"description":"","website":"","investorWebsite":"","category":"","fiscalYearEnd":"1231","stateOfIncorporation":"DE","stateOfIncorporationDescription":"DE","addresses":{"mailing":{"street1":"1 WORLD TRADE CENTER","street2":"57TH FLOOR","city":"NEW YORK","stateOrCountry":"NY","zipCode":"10007","stateOrCountryDescription":"NY","isForeignLocation":0,"foreignStateTerritory":null,"country":null,"countryCode":null},"business":{"street1":"1 WORLD TRADE CENTER","street2":"57TH FLOOR","city":"NEW YORK","stateOrCountry":"NY","zipCode":"10007","stateOrCountryDescription":"NY","isForeignLocation":null,"foreignStateTerritory":null,"country":null,"countryCode":null}},"phone":"203 518 5172","flags":"","formerNames":[],"filings":{"recent":{"accessionNumber":["0001493152-26-030678","0001493152-26-025877","0001493152-26-020047","0001493152-26-017295","0001493152-26-001398","0001493152-25-022823","0001493152-25-015166","0001641172-25-019048","0001641172-25-007007","0001641172-25-004380","0001493152-25-000662","0001493152-24-051388","0001493152-24-039826","0001493152-24-036761","0001493152-24-027427","0001493152-24-016433","0001493152-24-013580","0001493152-24-001336","0001493152-24-000966","0001493152-23-036007","0001493152-23-035518","0001493152-23-034179","0001493152-23-030964","0001493152-23-023708","0001493152-23-014224","0001493152-23-011404","0001493152-23-000585","0001493152-22-030472","0001493152-22-029096","0001493152-22-028823","0001493152-22-024674","0001493152-22-019706","0001493152-22-010994","0001493152-22-005365","0001493152-21-023474","0001493152-21-022282","0001493152-21-022268","9999999994-21-000274","0001493152-21-021755","0001493152-21-021028","0000000000-21-008821","0001493152-21-016572"],"filingDate":["2026-06-29","2026-05-29","2026-04-30","2026-04-17","2026-01-12","2025-11-14","2025-09-26","2025-07-14","2025-04-30","2025-04-14","2025-01-06","2024-12-23","2024-10-07","2024-09-17","2024-07-15","2024-04-26","2024-04-08","2024-01-05","2024-01-04","2023-10-05","2023-10-04","2023-09-27","2023-08-31","2023-07-06","2023-04-28","2023-04-07","2023-01-05","2022-11-04","2022-10-20","2022-10-19","2022-08-31","2022-07-18","2022-04-26","2022-02-24","2021-09-23","2021-09-09","2021-09-09","2021-09-03","2021-09-01","2021-08-23","2021-07-16","2021-07-12"],"reportDate":["","2026-05-29","2025-12-31","2026-04-17","2026-01-12","2025-11-14","2025-06-30","2025-07-14","2024-12-31","2025-04-14","2025-01-06","2024-12-23","2024-10-07","2024-06-30","2024-07-15","2023-12-31","2024-04-08","2024-01-05","2024-01-04","2023-10-05","2023-10-04","2023-06-30","2023-08-31","2023-07-06","2022-12-31","2023-04-07","2023-01-05","2022-11-04","2022-10-20","2022-10-19","2022-06-30","2022-07-18","2021-12-31","2022-02-24","2021-06-30","2021-09-09","","","","","",""],"acceptanceDateTime":["2026-06-29T16:32:36.000Z","2026-05-29T14:08:22.000Z","2026-04-30T19:06:51.000Z","2026-04-17T14:39:39.000Z","2026-01-12T18:31:29.000Z","2025-11-14T15:14:45.000Z","2025-09-26T14:19:12.000Z","2025-07-14T16:26:56.000Z","2025-04-30T16:22:07.000Z","2025-04-14T18:35:55.000Z","2025-01-06T17:39:12.000Z","2024-12-23T18:41:13.000Z","2024-10-07T17:43:20.000Z","2024-09-17T15:47:05.000Z","2024-07-15T15:53:51.000Z","2024-04-26T20:03:15.000Z","2024-04-08T16:53:48.000Z","2024-01-05T19:19:27.000Z","2024-01-04T16:39:21.000Z","2023-10-05T16:10:59.000Z","2023-10-04T14:46:50.000Z","2023-09-27T15:30:44.000Z","2023-08-31T19:27:50.000Z","2023-07-06T18:38:31.000Z","2023-04-28T16:20:36.000Z","2023-04-07T16:16:04.000Z","2023-01-05T20:22:04.000Z","2022-11-04T17:43:20.000Z","2022-10-20T14:21:43.000Z","2022-10-19T19:08:48.000Z","2022-08-31T21:10:57.000Z","2022-07-18T20:45:00.000Z","2022-04-26T00:13:44.000Z","2022-02-24T18:27:33.000Z","2021-09-23T17:50:42.000Z","2021-09-09T19:34:04.000Z","2021-09-09T18:25:54.000Z","2021-09-07T04:15:15.000Z","2021-09-01T16:42:24.000Z","2021-08-23T21:07:02.000Z","2021-07-16T20:30:09.000Z","2021-07-09T22:15:41.000Z"],"act":["33","33","33","33","33","33","33","33","33","33","33","33","33","33","33","33","33","33","33","33","33","33","33","33","33","33","33","33","33","33","33","33","33","33","33","33","33","33","","33","","33"],"form":["1-Z","1-U","1-K","1-U","1-U","1-U","1-SA","1-U","1-K","1-U","1-U","1-U","1-U","1-SA","1-U","1-K","1-U","1-U","1-U","1-U","1-U","1-SA","1-U","1-U","1-K","1-U","1-U","1-U","1-U","1-U","1-SA","1-U","1-K","1-U","1-SA","1-U","253G2","QUALIF","CORRESP","1-A/A","UPLOAD","1-A"],"fileNumber":["24R-00463","24R-00463","24R-00463","24R-00463","24R-00463","24R-00463","24R-00463","24R-00463","24R-00463","24R-00463","24R-00463","24R-00463","24R-00463","24R-00463","24R-00463","24R-00463","24R-00463","24R-00463","24R-00463","24R-00463","24R-00463","24R-00463","24R-00463","24R-00463","24R-00463","24R-00463","24R-00463","24R-00463","24R-00463","24R-00463","24R-00463","24R-00463","24R-00463","24R-00463","24R-00463","24R-00463","024-11577","024-11577","","024-11577","","024-11577"],"filmNumber":["261133607","261039860","26924029","26870085","26525925","251482195","251346038","251120772","25892840","25835564","25509972","241572154","241357087","241303063","241116358","24883454","24828902","24515661","24510572","231310505","231306868","231283043","231228683","231073168","23862745","23808259","23510997","221361595","221320271","221318432","221218686","221089620","22851371","22669316","211272138","211244344","211244208","211238127","","211197646","","211083843"],"items":["","9.1","","9.1","9.1","9.1","","9.1","","9.1","9.1","9.1","9.1","","9.1","","9.1","9.1","9.1","9.1","9.1","","9.1","9.1","","9.1","9.1","9.1","4","9.1","","9.1","","9.1","","9.1","","","","","",""],"core_type":["1-Z","1-U","1-K","1-U","1-U","1-U","1-SA","1-U","1-K","1-U","1-U","1-U","1-U","1-SA","1-U","1-K","1-U","1-U","1-U","1-U","1-U","1-SA","1-U","1-U","1-K","1-U","1-U","1-U","1-U","1-U","1-SA","1-U","1-K","1-U","1-SA","1-U","253G2","QUALIF","CORRESP","1-A/A","LETTER","1-A"],"size":[2729,22602,323351,31078,31205,31381,214566,31561,335857,32747,31395,25649,31444,219339,30599,321333,29726,29456,809747,24867,30385,198910,26198,30306,443848,30344,28994,25771,345289,31074,316043,29000,348666,21869,154988,6217095,1271333,1646,19517,1807507,40975,4817855],"isXBRL":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"isInlineXBRL":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"isXBRLNumeric":[0,0,0,0,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null],"primaryDocument":["xsl1-Z_X01/primary_doc.xml","form1-u.htm","xsl1-K_X01/primary_doc.xml","form1-u.htm","form1-u.htm","form1-u.htm","form1-sa.htm","form1-u.htm","xsl1-K_X01/primary_doc.xml","form1-u.htm","form1-u.htm","form1-u.htm","form1-u.htm","form1-sa.htm","form1-u.htm","xsl1-K_X01/primary_doc.xml","form1-u.htm","form1-u.htm","form1-u.htm","form1-u.htm","form1-u.htm","form1-sa.htm","form1-u.htm","form1-u.htm","xsl1-K_X01/primary_doc.xml","form1-u.htm","form1-u.htm","form1-u.htm","form1-u.htm","form1-u.htm","form1-sa.htm","form1-u.htm","xsl1-K_X01/primary_doc.xml","form1-u.htm","form1-sa.htm","form1-u.htm","form253g2.htm","xslQUALIFX01/primary_doc.xml","filename1.htm","xsl1-A_X01/primary_doc.xml","filename1.pdf","xsl1-A_X01/primary_doc.xml"],"primaryDocDescription":["","1-U","","1-U","1-U","1-U","1-SA","1-U","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","",""]},"files":[]}}