{"cik":"0001458116","entityType":"other","sic":"","sicDescription":"","ownerOrg":"","insiderTransactionForOwnerExists":1,"insiderTransactionForIssuerExists":0,"name":"Altschuler Steven","tickers":[],"exchanges":[],"ein":null,"lei":null,"description":"","website":"","investorWebsite":"","category":"","fiscalYearEnd":null,"stateOfIncorporation":"","stateOfIncorporationDescription":"","addresses":{"mailing":{"street1":"LEXEO THERAPEUTICS, INC.","street2":"345 PARK AVENUE SOUTH, FLOOR 6","city":"NEW YORK","stateOrCountry":"NY","zipCode":"10010","stateOrCountryDescription":"NY","isForeignLocation":0,"foreignStateTerritory":null,"country":null,"countryCode":null},"business":{"street1":null,"street2":null,"city":null,"stateOrCountry":null,"zipCode":null,"stateOrCountryDescription":null,"isForeignLocation":null,"foreignStateTerritory":null,"country":null,"countryCode":null}},"phone":null,"flags":"","formerNames":[],"filings":{"recent":{"accessionNumber":["0001458116-26-000002","0001193125-25-259056","0001415889-25-018519","0000950170-25-090483","0000950170-25-014433","0000950170-25-000389","0000950170-24-111403","0000950170-24-081572","0001415889-24-018348","0000950170-24-041132","0000950170-24-011462","0000950170-24-007054","0000950170-24-000918","0001209191-23-054258","0001209191-23-051962","0001209191-23-041064","0001209191-23-037908","0001209191-23-023252","0000899243-23-004826","0001209191-23-000900","0001209191-22-052824","0001209191-22-041120","0001209191-22-035003","0000899243-22-018586","0001209191-22-023461","0001209191-22-001646","0001209191-21-059808","0001209191-21-045788","0001209191-21-041505","0000899243-21-016224","0001209191-21-025867","0000899243-20-019090","0001209191-20-039715","0001209191-20-037901","0001209191-20-022095","0000899243-20-009444","0000899243-20-009442","0001209191-20-006159","0001209191-20-006154","0001209191-20-000246","0000899243-19-029419","0001127602-19-032132","0001209191-19-051792","0001209191-19-040185","0001609351-19-000055","0001209191-19-023131","0001209191-19-001883","0001127602-18-032520","0001209191-18-053768","0001209191-18-041571","0001609351-18-000054","0001127602-18-017295","0001209191-18-023643","0001209191-18-001916","0001209191-17-055896","0001209191-17-043966","0001104659-17-039505","0001609351-17-000045","0001209191-17-025582","0001209191-17-016251","0001209191-17-002002","0001209191-16-155874","0001209191-16-144888","0001209191-16-132035","0001609351-16-000066","0001609351-16-000027","0001209191-16-113438","0001209191-16-103646","0001209191-16-090031","0001209191-15-085781","0000899243-15-006597","0001209191-15-074559","0001209191-15-060126","0001209191-15-033096","0001209191-15-020678","0001209191-15-019378","0001192482-15-000015","0001209191-15-002844","0001209191-14-076280","0001181431-14-032991","0001181431-14-025789","0001181431-14-015125","0001209191-14-015522","0001181431-14-000203","0001181431-13-063087","0001181431-13-051963","0001181431-13-038670","0001181431-13-020557","0001209191-13-013004","0001181431-13-001673","0001181431-12-065654","0001181431-12-052486","0001225208-12-006914","0001225208-11-008847","0001225208-11-007707","0001225208-11-006194","0001225208-10-005773","0001225208-09-006967","0001225208-09-006941"],"filingDate":["2026-06-29","2025-10-30","2025-06-30","2025-06-26","2025-02-05","2025-01-02","2024-10-02","2024-07-03","2024-06-27","2024-04-03","2024-02-05","2024-01-24","2024-01-03","2023-11-02","2023-10-04","2023-07-05","2023-06-16","2023-04-05","2023-02-13","2023-01-04","2022-10-05","2022-07-06","2022-06-08","2022-05-18","2022-04-06","2022-01-05","2021-10-06","2021-07-07","2021-06-17","2021-04-19","2021-04-07","2020-07-14","2020-07-01","2020-06-19","2020-04-01","2020-03-25","2020-03-25","2020-02-03","2020-02-03","2020-01-02","2019-12-17","2019-11-07","2019-10-02","2019-07-02","2019-06-03","2019-04-03","2019-01-04","2018-11-08","2018-10-03","2018-07-05","2018-05-31","2018-05-14","2018-04-04","2018-01-04","2017-10-04","2017-07-06","2017-06-15","2017-06-02","2017-04-05","2017-03-02","2017-01-05","2016-12-19","2016-10-05","2016-07-07","2016-06-03","2016-04-29","2016-04-06","2016-03-01","2016-01-06","2015-12-17","2015-10-09","2015-10-07","2015-07-08","2015-04-08","2015-03-03","2015-02-27","2015-01-29","2015-01-07","2014-12-17","2014-10-01","2014-07-02","2014-04-02","2014-03-03","2014-01-02","2013-12-17","2013-10-02","2013-07-03","2013-04-03","2013-03-04","2013-01-04","2012-12-18","2012-10-01","2012-03-06","2011-03-04","2011-02-28","2011-02-16","2010-02-25","2009-03-12","2009-03-12"],"reportDate":["2026-06-25","2025-10-30","2025-06-26","2025-06-24","2025-02-03","2024-12-30","2024-09-30","2024-07-01","2024-06-25","2024-04-01","2024-02-01","2024-01-24","2024-01-01","2023-11-02","2023-10-02","2023-07-03","2023-06-14","2023-04-03","2023-02-09","2023-01-02","2022-10-03","2022-07-04","2022-06-07","2022-05-16","2022-04-04","2022-01-03","2021-10-04","2021-07-05","2021-06-16","2021-04-15","2021-04-05","2020-06-22","2020-06-29","2020-06-17","2020-03-30","2020-03-23","2020-03-23","2020-02-03","2020-02-03","2019-12-30","2019-12-17","2019-11-06","2019-09-30","2019-07-01","2019-05-30","2019-04-01","2019-01-02","2018-11-06","2018-10-01","2018-07-02","2018-05-30","2018-05-08","2018-04-02","2018-01-02","2017-10-02","2017-07-03","2017-06-15","2017-05-31","2017-04-03","2017-02-28","2017-01-03","2016-12-15","2016-10-03","2016-07-05","2016-06-01","2016-04-27","2016-04-04","2016-02-26","2016-01-04","2015-12-15","2015-10-07","2015-10-05","2015-07-06","2015-04-06","2015-02-28","2015-02-26","2015-01-29","2015-01-05","2014-12-15","2014-09-29","2014-06-30","2014-03-31","2014-02-27","2013-12-30","2013-12-15","2013-09-30","2013-07-01","2013-04-01","2013-02-27","2013-01-02","2012-12-15","2012-09-30","2012-03-02","2011-03-02","2011-02-24","2010-03-10","2010-02-24","2009-03-10","2009-03-10"],"acceptanceDateTime":["2026-06-29T20:45:56.000Z","2025-10-31T00:25:11.000Z","2025-06-30T21:00:08.000Z","2025-06-26T20:56:45.000Z","2025-02-05T21:01:06.000Z","2025-01-02T21:01:08.000Z","2024-10-02T20:01:10.000Z","2024-07-03T20:32:44.000Z","2024-06-27T21:04:37.000Z","2024-04-03T20:31:46.000Z","2024-02-06T01:08:49.000Z","2024-01-24T22:16:40.000Z","2024-01-03T21:20:08.000Z","2023-11-03T01:16:45.000Z","2023-10-04T20:26:24.000Z","2023-07-05T20:23:43.000Z","2023-06-16T20:30:21.000Z","2023-04-05T20:03:49.000Z","2023-02-13T22:48:01.000Z","2023-01-04T21:19:06.000Z","2022-10-05T21:24:01.000Z","2022-07-06T20:27:20.000Z","2022-06-08T20:05:47.000Z","2022-05-18T20:05:24.000Z","2022-04-06T20:14:44.000Z","2022-01-05T21:14:07.000Z","2021-10-06T20:08:43.000Z","2021-07-07T20:22:16.000Z","2021-06-17T21:02:03.000Z","2021-04-19T20:45:47.000Z","2021-04-07T20:21:53.000Z","2020-07-14T21:01:26.000Z","2020-07-01T20:10:54.000Z","2020-06-19T20:06:53.000Z","2020-04-01T20:11:36.000Z","2020-03-26T01:15:16.000Z","2020-03-26T01:08:44.000Z","2020-02-04T01:56:42.000Z","2020-02-04T01:47:08.000Z","2020-01-02T21:10:17.000Z","2019-12-17T21:30:53.000Z","2019-11-07T19:01:15.000Z","2019-10-02T20:57:41.000Z","2019-07-02T20:07:15.000Z","2019-06-03T20:16:40.000Z","2019-04-03T20:29:05.000Z","2019-01-04T21:09:16.000Z","2018-11-08T21:32:27.000Z","2018-10-03T20:10:00.000Z","2018-07-05T20:13:24.000Z","2018-06-01T01:29:03.000Z","2018-05-14T18:22:34.000Z","2018-04-04T20:25:12.000Z","2018-01-04T21:15:05.000Z","2017-10-04T20:45:48.000Z","2017-07-06T20:03:14.000Z","2017-06-15T19:42:21.000Z","2017-06-02T20:04:52.000Z","2017-04-05T20:08:09.000Z","2017-03-02T15:02:26.000Z","2017-01-05T21:12:54.000Z","2016-12-19T21:06:01.000Z","2016-10-05T20:13:43.000Z","2016-07-07T20:19:14.000Z","2016-06-03T20:33:09.000Z","2016-04-29T20:29:32.000Z","2016-04-06T20:10:38.000Z","2016-03-01T15:58:45.000Z","2016-01-06T22:48:59.000Z","2015-12-17T21:40:47.000Z","2015-10-09T23:19:42.000Z","2015-10-07T20:05:58.000Z","2015-07-08T20:35:59.000Z","2015-04-08T20:02:04.000Z","2015-03-03T14:48:20.000Z","2015-02-27T18:16:11.000Z","2015-01-30T00:48:53.000Z","2015-01-07T21:16:50.000Z","2014-12-17T21:10:16.000Z","2014-10-01T20:41:56.000Z","2014-07-02T20:11:10.000Z","2014-04-02T20:35:50.000Z","2014-03-03T14:33:17.000Z","2014-01-02T21:22:57.000Z","2013-12-17T21:24:03.000Z","2013-10-02T20:09:46.000Z","2013-07-03T19:33:14.000Z","2013-04-03T20:21:26.000Z","2013-03-04T12:30:31.000Z","2013-01-04T21:12:06.000Z","2012-12-18T22:28:48.000Z","2012-10-01T20:06:05.000Z","2012-03-06T22:53:57.000Z","2011-03-04T22:42:59.000Z","2011-03-01T01:57:44.000Z","2011-02-16T23:12:37.000Z","2010-02-25T22:34:06.000Z","2009-03-12T19:31:45.000Z","2009-03-12T18:55:01.000Z"],"act":["34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34"],"form":["4","4","4","4","4","4","4","4","4","4","4","4","4","3","4","4","4","4","4","4","4","4","4","4","4","4","4","4","4","4","4","4","4","4","4","4","3","4","3","4","4","4","4","4","4","4","4","4","4","4","4","3","4","4","4","4","4","4","4","4","4","4","4","4","4","4","4","4","4","4","4","4","4","4","4","4","3","4","4","4","4","4","4","4","4","4","4","4","4","4","4","3","4","4","4","4","4","4","3"],"fileNumber":["001-41855","001-39122","001-41855","001-16769","001-39122","001-16769","001-16769","001-16769","001-41855","001-16769","001-39122","001-38722","001-16769","001-41855","001-16769","001-16769","001-38722","001-16769","001-39122","001-16769","001-16769","001-16769","001-38722","001-39122","001-16769","001-16769","001-16769","001-16769","001-38722","001-39122","001-16769","001-39122","001-16769","001-38722","001-16769","001-39122","001-39122","001-38722","001-38722","001-16769","001-36819","001-13988","001-16769","001-16769","001-36819","001-16769","001-16769","001-13988","001-16769","001-16769","001-36819","001-13988","001-16769","001-16769","001-16769","001-16769","001-34251","001-36819","001-16769","001-34251","001-16769","001-16769","001-16769","001-16769","001-36819","001-36819","001-16769","001-34251","001-16769","001-16769","001-36819","001-16769","001-16769","001-16769","001-34251","001-34251","001-36819","001-16769","001-16769","001-16769","001-16769","001-16769","001-34251","001-16769","001-16769","001-16769","001-16769","001-16769","001-34251","001-16769","001-16769","001-16769","001-34251","001-34251","001-34251","001-34251","001-34251","001-34251","001-34251"],"filmNumber":["261136461","251437657","251092918","251081104","25593135","25501924","241347141","241100543","241080222","24819289","24597718","24557614","24506737","231374274","231308301","231069412","231021645","23802456","23620436","23506683","221296535","221069063","221003536","22939073","22810697","22511283","211309855","211077655","211025576","21835123","21812369","201027603","201005475","20975694","20765508","20743844","20743840","20570385","20570373","20501611","191290099","191199739","191133001","19937340","19873478","19729361","19510105","181170145","181105131","18940713","18873279","18829920","18737505","18510281","171122174","17952099","17913448","17887866","17742629","17657222","17510779","162059012","161922559","161756788","161696138","161607057","161557625","161471892","161327964","151294096","151154224","151149027","15979467","15759104","15667333","15656587","15560501","15513730","141292612","141133604","14956575","14738583","14658364","14502082","131282063","131130361","13953176","13739768","13659894","13511888","121272333","121120005","12671802","11665957","11648651","11618799","10634988","09675562","09675363"],"items":["","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","",""],"core_type":["4","4","4","4","4","4","4","4","4","4","4","4","4","3","4","4","4","4","4","4","4","4","4","4","4","4","4","4","4","4","4","4","4","4","4","4","3","4","3","4","4","4","4","4","4","4","4","4","4","4","4","3","4","4","4","4","4","4","4","4","4","4","4","4","4","4","4","4","4","4","4","4","4","4","4","4","3","4","4","4","4","4","4","4","4","4","4","4","4","4","4","3","4","4","4","4","4","4","3"],"size":[5653,22089,5508,11557,5302,5862,5863,5862,10300,5861,5300,8768,5628,9077,5773,5771,5677,12070,5415,5740,5740,5740,5616,5413,5739,4786,4786,4786,5615,5519,4785,5404,4785,5579,4785,5473,6855,5542,7456,4784,14723,4679,4785,4696,7072,4697,4697,4767,4702,4701,11426,5896,4701,4701,4702,4701,7648,7616,4702,9568,4701,4703,4702,4702,5257,4662,4702,9489,4702,4703,5137,4703,4701,4701,7219,6730,8371,4700,4701,4531,10753,4530,9490,4530,4532,4530,4530,4504,10680,4503,4505,10696,8572,4981,6990,12810,5439,5498,4472],"isXBRL":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"isInlineXBRL":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"isXBRLNumeric":[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,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,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null],"primaryDocument":["xslF345X06/form4-06292026_080651.xml","xslF345X05/ownership.xml","xslF345X05/form4-06302025_050604.xml","xslF345X05/ownership.xml","xslF345X05/ownership.xml","xslF345X05/ownership.xml","xslF345X05/ownership.xml","xslF345X05/ownership.xml","xslF345X05/form4-06272024_090634.xml","xslF345X05/ownership.xml","xslF345X05/ownership.xml","xslF345X05/ownership.xml","xslF345X05/ownership.xml","xslF345X02/doc3.xml","xslF345X05/doc4.xml","xslF345X04/doc4.xml","xslF345X04/doc4.xml","xslF345X04/doc4.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X02/doc3.xml","xslF345X03/doc4.xml","xslF345X02/doc3.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/form4.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/wf-form4_155959298469415.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/form4.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/wf-form4_152781652931863.xml","xslF345X02/form3.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/a4.xml","xslF345X03/wf-form4_149643387416366.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/wf-form4_146498597706283.xml","xslF345X03/wf-form4_146196175821563.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X02/edgar.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/rrd416794.xml","xslF345X03/rrd412640.xml","xslF345X03/rrd406770.xml","xslF345X03/doc4.xml","xslF345X03/rrd398524.xml","xslF345X03/rrd397173.xml","xslF345X03/rrd391591.xml","xslF345X03/rrd384834.xml","xslF345X03/rrd376059.xml","xslF345X03/doc4.xml","xslF345X03/rrd365388.xml","xslF345X03/rrd363773.xml","xslF345X02/rrd357004.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X03/doc4.xml","xslF345X02/doc3.xml"],"primaryDocDescription":["","4","","4","4","4","4","4","","4","4","4","4","FORM 3 SUBMISSION","FORM 4 SUBMISSION","FORM 4 SUBMISSION","FORM 4 SUBMISSION","FORM 4 SUBMISSION","FORM 4 SUBMISSION","FORM 4 SUBMISSION","FORM 4 SUBMISSION","FORM 4 SUBMISSION","FORM 4 SUBMISSION","FORM 4 SUBMISSION","FORM 4 SUBMISSION","FORM 4 SUBMISSION","FORM 4 SUBMISSION","FORM 4 SUBMISSION","FORM 4 SUBMISSION","FORM 4 SUBMISSION","FORM 4 SUBMISSION","FORM 4 SUBMISSION","FORM 4 SUBMISSION","FORM 4 SUBMISSION","FORM 4 SUBMISSION","FORM 4 SUBMISSION","FORM 3 SUBMISSION","FORM 4 SUBMISSION","FORM 3 SUBMISSION","FORM 4 SUBMISSION","FORM 4 SUBMISSION","PRIMARY DOCUMENT","FORM 4 SUBMISSION","FORM 4 SUBMISSION","FORM 4","FORM 4 SUBMISSION","FORM 4 SUBMISSION","PRIMARY DOCUMENT","FORM 4 SUBMISSION","FORM 4 SUBMISSION","FORM 4","PRIMARY DOCUMENT","FORM 4 SUBMISSION","FORM 4 SUBMISSION","FORM 4 SUBMISSION","FORM 4 SUBMISSION","4","FORM 4","FORM 4 SUBMISSION","FORM 4 SUBMISSION","FORM 4 SUBMISSION","FORM 4 SUBMISSION","FORM 4 SUBMISSION","FORM 4 SUBMISSION","FORM 4","FORM 4","FORM 4 SUBMISSION","FORM 4 SUBMISSION","FORM 4 SUBMISSION","FORM 4 SUBMISSION","FORM 4 SUBMISSION","FORM 4 SUBMISSION","FORM 4 SUBMISSION","FORM 4 SUBMISSION","FORM 4 SUBMISSION","FORM 4 SUBMISSION","PRIMARY DOCUMENT","FORM 4 SUBMISSION","FORM 4 SUBMISSION","2014-09-29 ALTSCHULER FORM 4","2014-06-30 ALTSCHULER FORM 4","2014-03-31 ALTSCHULER FORM 4","FORM 4 SUBMISSION","2013-12-30 ALTSCHULER FORM 4","2013-12-15 ALTSCHULER FORM 4","2013-9-30 ALTSCHULER FORM 4","2013-07-01 ALTSCHULER FORM 4","2013-04-01 ALTSCHULER FORM 4","FORM 4 SUBMISSION","2014-01-02 ALTSCHULER FORM 4","2012-12-15 ALTSCHULER FORM 4","2012-09-30 ALTSCHULER FORM 3","","","","","","",""]},"files":[]}}