{"entity":{"type":"insider","cik":"0001609495","url":"/insider/0001609495","json_url":"/insider/0001609495.json","name":"MPM Asset Management Investors BV2014 LLC","name_source":"as-filed","also_issuer":false,"cross_url":null},"coverage_statement":{"n_transactions":142,"n_filings":44,"first":"2019-02-14","last":"2025-12-04","span_basis":"filed_date"},"name_variants":[{"name":"MPM Asset Management Investors BV2014 LLC","source":"filing","n_filings":44,"first_seen":"2019-02-14","last_seen":"2025-12-04"}],"transactions":[{"id":4173477,"accession":"0001231919-25-000575","txn_seq":3,"anchor":"line-3","filing_url":"/filing/0001231919-25-000575","line_url":"/filing/0001231919-25-000575#line-3","is_derivative":false,"issuer_cik":"0001609492","issuer_name":"Werewolf Therapeutics, Inc.","issuer_ticker":"HOWL","issuer_name_source":null,"issuer_url":"/issuer/0001609492","owner_cik":null,"owner_name":"MPM BioVentures 2014 GP LLC; MPM BioVentures 2014 (B), L.P.; MPM BioVentures 2014 LLC; MPM Asset Management Investors BV2014 LLC","owner_url":null,"role":"Other","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":83230.0,"shares_display":"83,230","price_per_share":0.97,"price_display":"0.97","price_state":"stated","total_value":80733.1,"total_display":"80,733.10","shares_owned_after":4784111.0,"shares_owned_after_display":"4,784,111","ownership_form":"I","is_10b5_1":null,"transaction_date":"2025-12-04","filed_date":"2025-12-04","scope":"insider"},{"id":4173476,"accession":"0001231919-25-000575","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001231919-25-000575","line_url":"/filing/0001231919-25-000575#line-2","is_derivative":false,"issuer_cik":"0001609492","issuer_name":"Werewolf Therapeutics, Inc.","issuer_ticker":"HOWL","issuer_name_source":null,"issuer_url":"/issuer/0001609492","owner_cik":null,"owner_name":"MPM BioVentures 2014 GP LLC; MPM BioVentures 2014 (B), L.P.; MPM BioVentures 2014 LLC; MPM Asset Management Investors BV2014 LLC","owner_url":null,"role":"Other","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":57225.0,"shares_display":"57,225","price_per_share":0.87,"price_display":"0.87","price_state":"stated","total_value":49785.75,"total_display":"49,785.75","shares_owned_after":4867341.0,"shares_owned_after_display":"4,867,341","ownership_form":"I","is_10b5_1":null,"transaction_date":"2025-12-03","filed_date":"2025-12-04","scope":"insider"},{"id":4173474,"accession":"0001231919-25-000575","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001231919-25-000575","line_url":"/filing/0001231919-25-000575#line-1","is_derivative":false,"issuer_cik":"0001609492","issuer_name":"Werewolf Therapeutics, Inc.","issuer_ticker":"HOWL","issuer_name_source":null,"issuer_url":"/issuer/0001609492","owner_cik":null,"owner_name":"MPM BioVentures 2014 GP LLC; MPM BioVentures 2014 (B), L.P.; MPM BioVentures 2014 LLC; MPM Asset Management Investors BV2014 LLC","owner_url":null,"role":"Other","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":59277.0,"shares_display":"59,277","price_per_share":0.89,"price_display":"0.89","price_state":"stated","total_value":52756.53,"total_display":"52,756.53","shares_owned_after":4924566.0,"shares_owned_after_display":"4,924,566","ownership_form":"I","is_10b5_1":null,"transaction_date":"2025-12-02","filed_date":"2025-12-04","scope":"insider"},{"id":4767252,"accession":"0001231919-25-000565","txn_seq":3,"anchor":"line-3","filing_url":"/filing/0001231919-25-000565","line_url":"/filing/0001231919-25-000565#line-3","is_derivative":false,"issuer_cik":"0001609492","issuer_name":"Werewolf Therapeutics, Inc.","issuer_ticker":"HOWL","issuer_name_source":null,"issuer_url":"/issuer/0001609492","owner_cik":null,"owner_name":"MPM BioVentures 2014 GP LLC; MPM Asset Management Investors BV2014 LLC; MPM BioVentures 2014 LLC; MPM BioVentures 2014 (B), L.P.","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":60917.0,"shares_display":"60,917","price_per_share":0.94,"price_display":"0.94","price_state":"stated","total_value":57261.98,"total_display":"57,261.98","shares_owned_after":4983843.0,"shares_owned_after_display":"4,983,843","ownership_form":"I","is_10b5_1":null,"transaction_date":"2025-12-01","filed_date":"2025-12-01","scope":"insider"},{"id":4767243,"accession":"0001231919-25-000565","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001231919-25-000565","line_url":"/filing/0001231919-25-000565#line-2","is_derivative":false,"issuer_cik":"0001609492","issuer_name":"Werewolf Therapeutics, Inc.","issuer_ticker":"HOWL","issuer_name_source":null,"issuer_url":"/issuer/0001609492","owner_cik":null,"owner_name":"MPM BioVentures 2014 GP LLC; MPM Asset Management Investors BV2014 LLC; MPM BioVentures 2014 LLC; MPM BioVentures 2014 (B), L.P.","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":20277.0,"shares_display":"20,277","price_per_share":0.99,"price_display":"0.99","price_state":"stated","total_value":20074.23,"total_display":"20,074.23","shares_owned_after":5044760.0,"shares_owned_after_display":"5,044,760","ownership_form":"I","is_10b5_1":null,"transaction_date":"2025-11-28","filed_date":"2025-12-01","scope":"insider"},{"id":4767237,"accession":"0001231919-25-000565","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001231919-25-000565","line_url":"/filing/0001231919-25-000565#line-1","is_derivative":false,"issuer_cik":"0001609492","issuer_name":"Werewolf Therapeutics, Inc.","issuer_ticker":"HOWL","issuer_name_source":null,"issuer_url":"/issuer/0001609492","owner_cik":null,"owner_name":"MPM BioVentures 2014 GP LLC; MPM Asset Management Investors BV2014 LLC; MPM BioVentures 2014 LLC; MPM BioVentures 2014 (B), L.P.","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":60733.0,"shares_display":"60,733","price_per_share":0.98,"price_display":"0.98","price_state":"stated","total_value":59518.34,"total_display":"59,518.34","shares_owned_after":5065037.0,"shares_owned_after_display":"5,065,037","ownership_form":"I","is_10b5_1":null,"transaction_date":"2025-11-26","filed_date":"2025-12-01","scope":"insider"},{"id":4586905,"accession":"0001231919-25-000551","txn_seq":3,"anchor":"line-3","filing_url":"/filing/0001231919-25-000551","line_url":"/filing/0001231919-25-000551#line-3","is_derivative":false,"issuer_cik":"0001609492","issuer_name":"Werewolf Therapeutics, Inc.","issuer_ticker":"HOWL","issuer_name_source":null,"issuer_url":"/issuer/0001609492","owner_cik":null,"owner_name":"MPM BioVentures 2014 (B), L.P.; MPM BioVentures 2014 GP LLC; MPM Asset Management Investors BV2014 LLC; MPM BioVentures 2014 LLC","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":42533.0,"shares_display":"42,533","price_per_share":0.92,"price_display":"0.92","price_state":"stated","total_value":39130.36,"total_display":"39,130.36","shares_owned_after":5125770.0,"shares_owned_after_display":"5,125,770","ownership_form":"I","is_10b5_1":null,"transaction_date":"2025-11-25","filed_date":"2025-11-25","scope":"insider"},{"id":4586902,"accession":"0001231919-25-000551","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001231919-25-000551","line_url":"/filing/0001231919-25-000551#line-2","is_derivative":false,"issuer_cik":"0001609492","issuer_name":"Werewolf Therapeutics, Inc.","issuer_ticker":"HOWL","issuer_name_source":null,"issuer_url":"/issuer/0001609492","owner_cik":null,"owner_name":"MPM BioVentures 2014 (B), L.P.; MPM BioVentures 2014 GP LLC; MPM Asset Management Investors BV2014 LLC; MPM BioVentures 2014 LLC","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":88802.0,"shares_display":"88,802","price_per_share":0.98,"price_display":"0.98","price_state":"stated","total_value":87025.96,"total_display":"87,025.96","shares_owned_after":5168303.0,"shares_owned_after_display":"5,168,303","ownership_form":"I","is_10b5_1":null,"transaction_date":"2025-11-24","filed_date":"2025-11-25","scope":"insider"},{"id":4586895,"accession":"0001231919-25-000551","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001231919-25-000551","line_url":"/filing/0001231919-25-000551#line-1","is_derivative":false,"issuer_cik":"0001609492","issuer_name":"Werewolf Therapeutics, Inc.","issuer_ticker":"HOWL","issuer_name_source":null,"issuer_url":"/issuer/0001609492","owner_cik":null,"owner_name":"MPM BioVentures 2014 (B), L.P.; MPM BioVentures 2014 GP LLC; MPM Asset Management Investors BV2014 LLC; MPM BioVentures 2014 LLC","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":64331.0,"shares_display":"64,331","price_per_share":0.83,"price_display":"0.83","price_state":"stated","total_value":53394.73,"total_display":"53,394.73","shares_owned_after":5257105.0,"shares_owned_after_display":"5,257,105","ownership_form":"I","is_10b5_1":null,"transaction_date":"2025-11-21","filed_date":"2025-11-25","scope":"insider"},{"id":4242857,"accession":"0001231919-25-000534","txn_seq":3,"anchor":"line-3","filing_url":"/filing/0001231919-25-000534","line_url":"/filing/0001231919-25-000534#line-3","is_derivative":false,"issuer_cik":"0001609492","issuer_name":"Werewolf Therapeutics, Inc.","issuer_ticker":"HOWL","issuer_name_source":null,"issuer_url":"/issuer/0001609492","owner_cik":null,"owner_name":"MPM Asset Management Investors BV2014 LLC; MPM BioVentures 2014 GP LLC; MPM BioVentures 2014 (B), L.P.; MPM BioVentures 2014 LLC","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":41152.0,"shares_display":"41,152","price_per_share":0.89,"price_display":"0.89","price_state":"stated","total_value":36625.28,"total_display":"36,625.28","shares_owned_after":5321436.0,"shares_owned_after_display":"5,321,436","ownership_form":"I","is_10b5_1":null,"transaction_date":"2025-11-20","filed_date":"2025-11-20","scope":"insider"},{"id":4242853,"accession":"0001231919-25-000534","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001231919-25-000534","line_url":"/filing/0001231919-25-000534#line-2","is_derivative":false,"issuer_cik":"0001609492","issuer_name":"Werewolf Therapeutics, Inc.","issuer_ticker":"HOWL","issuer_name_source":null,"issuer_url":"/issuer/0001609492","owner_cik":null,"owner_name":"MPM Asset Management Investors BV2014 LLC; MPM BioVentures 2014 GP LLC; MPM BioVentures 2014 (B), L.P.; MPM BioVentures 2014 LLC","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":66324.0,"shares_display":"66,324","price_per_share":0.94,"price_display":"0.94","price_state":"stated","total_value":62344.56,"total_display":"62,344.56","shares_owned_after":5362588.0,"shares_owned_after_display":"5,362,588","ownership_form":"I","is_10b5_1":null,"transaction_date":"2025-11-19","filed_date":"2025-11-20","scope":"insider"},{"id":4242848,"accession":"0001231919-25-000534","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001231919-25-000534","line_url":"/filing/0001231919-25-000534#line-1","is_derivative":false,"issuer_cik":"0001609492","issuer_name":"Werewolf Therapeutics, Inc.","issuer_ticker":"HOWL","issuer_name_source":null,"issuer_url":"/issuer/0001609492","owner_cik":null,"owner_name":"MPM Asset Management Investors BV2014 LLC; MPM BioVentures 2014 GP LLC; MPM BioVentures 2014 (B), L.P.; MPM BioVentures 2014 LLC","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":52627.0,"shares_display":"52,627","price_per_share":0.93,"price_display":"0.93","price_state":"stated","total_value":48943.11,"total_display":"48,943.11","shares_owned_after":5428912.0,"shares_owned_after_display":"5,428,912","ownership_form":"I","is_10b5_1":null,"transaction_date":"2025-11-18","filed_date":"2025-11-20","scope":"insider"},{"id":5035742,"accession":"0001231919-25-000509","txn_seq":3,"anchor":"line-3","filing_url":"/filing/0001231919-25-000509","line_url":"/filing/0001231919-25-000509#line-3","is_derivative":false,"issuer_cik":"0001609492","issuer_name":"Werewolf Therapeutics, Inc.","issuer_ticker":"HOWL","issuer_name_source":null,"issuer_url":"/issuer/0001609492","owner_cik":null,"owner_name":"MPM BioVentures 2014 (B), L.P.; MPM BioVentures 2014 GP LLC; MPM Asset Management Investors BV2014 LLC; MPM BioVentures 2014 LLC","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":57061.0,"shares_display":"57,061","price_per_share":0.95,"price_display":"0.95","price_state":"stated","total_value":54207.95,"total_display":"54,207.95","shares_owned_after":5481539.0,"shares_owned_after_display":"5,481,539","ownership_form":"I","is_10b5_1":null,"transaction_date":"2025-11-17","filed_date":"2025-11-17","scope":"insider"},{"id":5035739,"accession":"0001231919-25-000509","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001231919-25-000509","line_url":"/filing/0001231919-25-000509#line-2","is_derivative":false,"issuer_cik":"0001609492","issuer_name":"Werewolf Therapeutics, Inc.","issuer_ticker":"HOWL","issuer_name_source":null,"issuer_url":"/issuer/0001609492","owner_cik":null,"owner_name":"MPM BioVentures 2014 (B), L.P.; MPM BioVentures 2014 GP LLC; MPM Asset Management Investors BV2014 LLC; MPM BioVentures 2014 LLC","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":61640.0,"shares_display":"61,640","price_per_share":0.93,"price_display":"0.93","price_state":"stated","total_value":57325.2,"total_display":"57,325.20","shares_owned_after":5538600.0,"shares_owned_after_display":"5,538,600","ownership_form":"I","is_10b5_1":null,"transaction_date":"2025-11-14","filed_date":"2025-11-17","scope":"insider"},{"id":5035735,"accession":"0001231919-25-000509","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001231919-25-000509","line_url":"/filing/0001231919-25-000509#line-1","is_derivative":false,"issuer_cik":"0001609492","issuer_name":"Werewolf Therapeutics, Inc.","issuer_ticker":"HOWL","issuer_name_source":null,"issuer_url":"/issuer/0001609492","owner_cik":null,"owner_name":"MPM BioVentures 2014 (B), L.P.; MPM BioVentures 2014 GP LLC; MPM Asset Management Investors BV2014 LLC; MPM BioVentures 2014 LLC","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":90951.0,"shares_display":"90,951","price_per_share":0.98,"price_display":"0.98","price_state":"stated","total_value":89131.98,"total_display":"89,131.98","shares_owned_after":5600240.0,"shares_owned_after_display":"5,600,240","ownership_form":"I","is_10b5_1":null,"transaction_date":"2025-11-13","filed_date":"2025-11-17","scope":"insider"},{"id":4049497,"accession":"0001231919-25-000461","txn_seq":4,"anchor":"line-4","filing_url":"/filing/0001231919-25-000461","line_url":"/filing/0001231919-25-000461#line-4","is_derivative":false,"issuer_cik":"0001609492","issuer_name":"Werewolf Therapeutics, Inc.","issuer_ticker":"HOWL","issuer_name_source":null,"issuer_url":"/issuer/0001609492","owner_cik":null,"owner_name":"MPM BioVentures 2014 (B), L.P.; MPM Asset Management Investors BV2014 LLC; MPM BioVentures 2014 LLC; MPM BioVentures 2014 GP LLC","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":40669.0,"shares_display":"40,669","price_per_share":1.09,"price_display":"1.09","price_state":"stated","total_value":44329.21,"total_display":"44,329.21","shares_owned_after":5691191.0,"shares_owned_after_display":"5,691,191","ownership_form":"I","is_10b5_1":null,"transaction_date":"2025-11-12","filed_date":"2025-11-12","scope":"insider"},{"id":4049496,"accession":"0001231919-25-000461","txn_seq":3,"anchor":"line-3","filing_url":"/filing/0001231919-25-000461","line_url":"/filing/0001231919-25-000461#line-3","is_derivative":false,"issuer_cik":"0001609492","issuer_name":"Werewolf Therapeutics, Inc.","issuer_ticker":"HOWL","issuer_name_source":null,"issuer_url":"/issuer/0001609492","owner_cik":null,"owner_name":"MPM BioVentures 2014 (B), L.P.; MPM Asset Management Investors BV2014 LLC; MPM BioVentures 2014 LLC; MPM BioVentures 2014 GP LLC","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":55810.0,"shares_display":"55,810","price_per_share":1.14,"price_display":"1.14","price_state":"stated","total_value":63623.4,"total_display":"63,623.40","shares_owned_after":5731860.0,"shares_owned_after_display":"5,731,860","ownership_form":"I","is_10b5_1":null,"transaction_date":"2025-11-11","filed_date":"2025-11-12","scope":"insider"},{"id":4049495,"accession":"0001231919-25-000461","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001231919-25-000461","line_url":"/filing/0001231919-25-000461#line-2","is_derivative":false,"issuer_cik":"0001609492","issuer_name":"Werewolf Therapeutics, Inc.","issuer_ticker":"HOWL","issuer_name_source":null,"issuer_url":"/issuer/0001609492","owner_cik":null,"owner_name":"MPM BioVentures 2014 (B), L.P.; MPM Asset Management Investors BV2014 LLC; MPM BioVentures 2014 LLC; MPM BioVentures 2014 GP LLC","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":48570.0,"shares_display":"48,570","price_per_share":1.18,"price_display":"1.18","price_state":"stated","total_value":57312.6,"total_display":"57,312.60","shares_owned_after":5787670.0,"shares_owned_after_display":"5,787,670","ownership_form":"I","is_10b5_1":null,"transaction_date":"2025-11-10","filed_date":"2025-11-12","scope":"insider"},{"id":4049494,"accession":"0001231919-25-000461","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001231919-25-000461","line_url":"/filing/0001231919-25-000461#line-1","is_derivative":false,"issuer_cik":"0001609492","issuer_name":"Werewolf Therapeutics, Inc.","issuer_ticker":"HOWL","issuer_name_source":null,"issuer_url":"/issuer/0001609492","owner_cik":null,"owner_name":"MPM BioVentures 2014 (B), L.P.; MPM Asset Management Investors BV2014 LLC; MPM BioVentures 2014 LLC; MPM BioVentures 2014 GP LLC","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":68480.0,"shares_display":"68,480","price_per_share":1.11,"price_display":"1.11","price_state":"stated","total_value":76012.8,"total_display":"76,012.80","shares_owned_after":5836240.0,"shares_owned_after_display":"5,836,240","ownership_form":"I","is_10b5_1":null,"transaction_date":"2025-11-07","filed_date":"2025-11-12","scope":"insider"},{"id":4883118,"accession":"0001231919-25-000441","txn_seq":3,"anchor":"line-3","filing_url":"/filing/0001231919-25-000441","line_url":"/filing/0001231919-25-000441#line-3","is_derivative":false,"issuer_cik":"0001609492","issuer_name":"Werewolf Therapeutics, Inc.","issuer_ticker":"HOWL","issuer_name_source":null,"issuer_url":"/issuer/0001609492","owner_cik":null,"owner_name":"MPM BioVentures 2014 LLC; MPM BioVentures 2014 (B), L.P.; MPM Asset Management Investors BV2014 LLC; MPM BioVentures 2014 GP LLC","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":54452.0,"shares_display":"54,452","price_per_share":1.21,"price_display":"1.21","price_state":"stated","total_value":65886.92,"total_display":"65,886.92","shares_owned_after":5904720.0,"shares_owned_after_display":"5,904,720","ownership_form":"I","is_10b5_1":null,"transaction_date":"2025-11-06","filed_date":"2025-11-06","scope":"insider"},{"id":4883113,"accession":"0001231919-25-000441","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001231919-25-000441","line_url":"/filing/0001231919-25-000441#line-2","is_derivative":false,"issuer_cik":"0001609492","issuer_name":"Werewolf Therapeutics, Inc.","issuer_ticker":"HOWL","issuer_name_source":null,"issuer_url":"/issuer/0001609492","owner_cik":null,"owner_name":"MPM BioVentures 2014 LLC; MPM BioVentures 2014 (B), L.P.; MPM Asset Management Investors BV2014 LLC; MPM BioVentures 2014 GP LLC","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":47950.0,"shares_display":"47,950","price_per_share":1.22,"price_display":"1.22","price_state":"stated","total_value":58499.0,"total_display":"58,499.00","shares_owned_after":5959172.0,"shares_owned_after_display":"5,959,172","ownership_form":"I","is_10b5_1":null,"transaction_date":"2025-11-05","filed_date":"2025-11-06","scope":"insider"},{"id":4883108,"accession":"0001231919-25-000441","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001231919-25-000441","line_url":"/filing/0001231919-25-000441#line-1","is_derivative":false,"issuer_cik":"0001609492","issuer_name":"Werewolf Therapeutics, Inc.","issuer_ticker":"HOWL","issuer_name_source":null,"issuer_url":"/issuer/0001609492","owner_cik":null,"owner_name":"MPM BioVentures 2014 LLC; MPM BioVentures 2014 (B), L.P.; MPM Asset Management Investors BV2014 LLC; MPM BioVentures 2014 GP LLC","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":140488.0,"shares_display":"140,488","price_per_share":1.22,"price_display":"1.22","price_state":"stated","total_value":171395.36,"total_display":"171,395.36","shares_owned_after":6007122.0,"shares_owned_after_display":"6,007,122","ownership_form":"I","is_10b5_1":null,"transaction_date":"2025-11-04","filed_date":"2025-11-06","scope":"insider"},{"id":4798289,"accession":"0001231919-25-000406","txn_seq":3,"anchor":"line-3","filing_url":"/filing/0001231919-25-000406","line_url":"/filing/0001231919-25-000406#line-3","is_derivative":false,"issuer_cik":"0001609492","issuer_name":"Werewolf Therapeutics, Inc.","issuer_ticker":"HOWL","issuer_name_source":null,"issuer_url":"/issuer/0001609492","owner_cik":null,"owner_name":"MPM BioVentures 2014 LLC; MPM Asset Management Investors BV2014 LLC; MPM BioVentures 2014 (B), L.P.; MPM BioVentures 2014 GP LLC","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":94063.0,"shares_display":"94,063","price_per_share":1.29,"price_display":"1.29","price_state":"stated","total_value":121341.27,"total_display":"121,341.27","shares_owned_after":6147610.0,"shares_owned_after_display":"6,147,610","ownership_form":"I","is_10b5_1":null,"transaction_date":"2025-11-03","filed_date":"2025-11-03","scope":"insider"},{"id":4798286,"accession":"0001231919-25-000406","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001231919-25-000406","line_url":"/filing/0001231919-25-000406#line-2","is_derivative":false,"issuer_cik":"0001609492","issuer_name":"Werewolf Therapeutics, Inc.","issuer_ticker":"HOWL","issuer_name_source":null,"issuer_url":"/issuer/0001609492","owner_cik":null,"owner_name":"MPM BioVentures 2014 LLC; MPM Asset Management Investors BV2014 LLC; MPM BioVentures 2014 (B), L.P.; MPM BioVentures 2014 GP LLC","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":114044.0,"shares_display":"114,044","price_per_share":1.28,"price_display":"1.28","price_state":"stated","total_value":145976.32,"total_display":"145,976.32","shares_owned_after":6241673.0,"shares_owned_after_display":"6,241,673","ownership_form":"I","is_10b5_1":null,"transaction_date":"2025-10-31","filed_date":"2025-11-03","scope":"insider"},{"id":4798283,"accession":"0001231919-25-000406","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001231919-25-000406","line_url":"/filing/0001231919-25-000406#line-1","is_derivative":false,"issuer_cik":"0001609492","issuer_name":"Werewolf Therapeutics, Inc.","issuer_ticker":"HOWL","issuer_name_source":null,"issuer_url":"/issuer/0001609492","owner_cik":null,"owner_name":"MPM BioVentures 2014 LLC; MPM Asset Management Investors BV2014 LLC; MPM BioVentures 2014 (B), L.P.; MPM BioVentures 2014 GP LLC","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":86936.0,"shares_display":"86,936","price_per_share":1.43,"price_display":"1.43","price_state":"stated","total_value":124318.48,"total_display":"124,318.48","shares_owned_after":6355717.0,"shares_owned_after_display":"6,355,717","ownership_form":"I","is_10b5_1":null,"transaction_date":"2025-10-30","filed_date":"2025-11-03","scope":"insider"},{"id":4242825,"accession":"0001231919-25-000374","txn_seq":3,"anchor":"line-3","filing_url":"/filing/0001231919-25-000374","line_url":"/filing/0001231919-25-000374#line-3","is_derivative":false,"issuer_cik":"0001609492","issuer_name":"Werewolf Therapeutics, Inc.","issuer_ticker":"HOWL","issuer_name_source":null,"issuer_url":"/issuer/0001609492","owner_cik":null,"owner_name":"MPM BioVentures 2014 (B), L.P.; MPM Asset Management Investors BV2014 LLC; MPM BioVentures 2014 LLC; MPM BioVentures 2014 GP LLC","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":134240.0,"shares_display":"134,240","price_per_share":1.55,"price_display":"1.55","price_state":"stated","total_value":208072.0,"total_display":"208,072.00","shares_owned_after":6442653.0,"shares_owned_after_display":"6,442,653","ownership_form":"I","is_10b5_1":null,"transaction_date":"2025-10-29","filed_date":"2025-10-29","scope":"insider"},{"id":4242822,"accession":"0001231919-25-000374","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001231919-25-000374","line_url":"/filing/0001231919-25-000374#line-2","is_derivative":false,"issuer_cik":"0001609492","issuer_name":"Werewolf Therapeutics, Inc.","issuer_ticker":"HOWL","issuer_name_source":null,"issuer_url":"/issuer/0001609492","owner_cik":null,"owner_name":"MPM BioVentures 2014 (B), L.P.; MPM Asset Management Investors BV2014 LLC; MPM BioVentures 2014 LLC; MPM BioVentures 2014 GP LLC","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":69068.0,"shares_display":"69,068","price_per_share":1.64,"price_display":"1.64","price_state":"stated","total_value":113271.52,"total_display":"113,271.52","shares_owned_after":6576893.0,"shares_owned_after_display":"6,576,893","ownership_form":"I","is_10b5_1":null,"transaction_date":"2025-10-28","filed_date":"2025-10-29","scope":"insider"},{"id":4242818,"accession":"0001231919-25-000374","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001231919-25-000374","line_url":"/filing/0001231919-25-000374#line-1","is_derivative":false,"issuer_cik":"0001609492","issuer_name":"Werewolf Therapeutics, Inc.","issuer_ticker":"HOWL","issuer_name_source":null,"issuer_url":"/issuer/0001609492","owner_cik":null,"owner_name":"MPM BioVentures 2014 (B), L.P.; MPM Asset Management Investors BV2014 LLC; MPM BioVentures 2014 LLC; MPM BioVentures 2014 GP LLC","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":72709.0,"shares_display":"72,709","price_per_share":1.72,"price_display":"1.72","price_state":"stated","total_value":125059.48,"total_display":"125,059.48","shares_owned_after":6645961.0,"shares_owned_after_display":"6,645,961","ownership_form":"I","is_10b5_1":null,"transaction_date":"2025-10-27","filed_date":"2025-10-29","scope":"insider"},{"id":4861298,"accession":"0001415889-25-013248","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001415889-25-013248","line_url":"/filing/0001415889-25-013248#line-1","is_derivative":false,"issuer_cik":"0001134657","issuer_name":"iTeos Therapeutics, Inc.","issuer_ticker":"ITOS","issuer_name_source":null,"issuer_url":"/issuer/0001134657","owner_cik":null,"owner_name":"MPM Asset Management Investors BV2014 LLC; MPM BioVentures 2014 GP LLC; Foley Todd; MPM BIOVENTURES 2018 (B), L.P.; MPM BioVentures 2014 (B), L.P.; MPM ASSET MANAGEMENT INVESTORS BV2018 LLC; EVNIN LUKE; MPM BioVentures 2014 LLC","owner_url":null,"role":"Other","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":630191.0,"shares_display":"630,191","price_per_share":8.06,"price_display":"8.06","price_state":"stated","total_value":5079339.46,"total_display":"5,079,339.46","shares_owned_after":2108594.0,"shares_owned_after_display":"2,108,594","ownership_form":"I","is_10b5_1":null,"transaction_date":"2025-05-13","filed_date":"2025-05-15","scope":"insider"},{"id":4358231,"accession":"0001415889-25-011574","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001415889-25-011574","line_url":"/filing/0001415889-25-011574#line-1","is_derivative":false,"issuer_cik":"0001473930","issuer_name":"Werewolf Therapeutics, Inc.","issuer_ticker":"HOWL","issuer_name_source":null,"issuer_url":"/issuer/0001473930","owner_cik":null,"owner_name":"MPM BioVentures 2014 LLC; MPM Asset Management Investors BV2014 LLC; MPM BioVentures 2014 (B), L.P.; MPM BioVentures 2014 GP LLC; Foley Todd","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":1963.0,"shares_display":"1,963","price_per_share":1.05,"price_display":"1.05","price_state":"stated","total_value":2061.15,"total_display":"2,061.15","shares_owned_after":3208793.0,"shares_owned_after_display":"3,208,793","ownership_form":"I","is_10b5_1":null,"transaction_date":"2025-03-27","filed_date":"2025-04-30","scope":"insider"},{"id":2371463,"accession":"0001415889-24-029141","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001415889-24-029141","line_url":"/filing/0001415889-24-029141#line-2","is_derivative":false,"issuer_cik":"0001134655","issuer_name":"Entrada Therapeutics, Inc.","issuer_ticker":"TRDA","issuer_name_source":null,"issuer_url":"/issuer/0001134655","owner_cik":null,"owner_name":"MPM BioVentures 2014 (B), L.P.; MPM BioVentures 2014 LLC; MPM ASSET MANAGEMENT INVESTORS BV2018 LLC; MPM BIOVENTURES 2018 (B), L.P.; GADICKE ANSBERT; MPM Asset Management Investors BV2014 LLC; Foley Todd; MPM BioVentures 2014 GP LLC; EVNIN LUKE","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":21787.0,"shares_display":"21,787","price_per_share":20.23,"price_display":"20.23","price_state":"stated","total_value":440751.01,"total_display":"440,751.01","shares_owned_after":4381062.0,"shares_owned_after_display":"4,381,062","ownership_form":"I","is_10b5_1":null,"transaction_date":"2024-12-11","filed_date":"2024-12-12","scope":"insider"},{"id":2371461,"accession":"0001415889-24-029141","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001415889-24-029141","line_url":"/filing/0001415889-24-029141#line-1","is_derivative":false,"issuer_cik":"0001134655","issuer_name":"Entrada Therapeutics, Inc.","issuer_ticker":"TRDA","issuer_name_source":null,"issuer_url":"/issuer/0001134655","owner_cik":null,"owner_name":"MPM BioVentures 2014 (B), L.P.; MPM BioVentures 2014 LLC; MPM ASSET MANAGEMENT INVESTORS BV2018 LLC; MPM BIOVENTURES 2018 (B), L.P.; GADICKE ANSBERT; MPM Asset Management Investors BV2014 LLC; Foley Todd; MPM BioVentures 2014 GP LLC; EVNIN LUKE","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":22935.0,"shares_display":"22,935","price_per_share":20.77,"price_display":"20.77","price_state":"stated","total_value":476359.95,"total_display":"476,359.95","shares_owned_after":4402849.0,"shares_owned_after_display":"4,402,849","ownership_form":"I","is_10b5_1":null,"transaction_date":"2024-12-10","filed_date":"2024-12-12","scope":"insider"},{"id":6692851,"accession":"0001209191-22-002168","txn_seq":5,"anchor":"line-5","filing_url":"/filing/0001209191-22-002168","line_url":"/filing/0001209191-22-002168#line-5","is_derivative":false,"issuer_cik":"0001134657","issuer_name":"iTeos Therapeutics, Inc.","issuer_ticker":"ITOS","issuer_name_source":null,"issuer_url":"/issuer/0001134657","owner_cik":null,"owner_name":"Foley Todd; MPM BioVentures 2014 LLC; MPM BioVentures 2014 (B), L.P.; MPM ASSET MANAGEMENT INVESTORS BV2018 LLC; MPM Asset Management Investors BV2014 LLC; MPM BioVentures 2014 GP LLC; MPM BIOVENTURES 2018 (B), L.P.; MPM BioVentures 2014, L.P.; EVNIN LUKE","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":18135.0,"shares_display":"18,135","price_per_share":42.03,"price_display":"42.03","price_state":"stated","total_value":762214.05,"total_display":"762,214.05","shares_owned_after":2738785.0,"shares_owned_after_display":"2,738,785","ownership_form":"I","is_10b5_1":null,"transaction_date":"2022-01-05","filed_date":"2022-01-06","scope":"insider"},{"id":6692849,"accession":"0001209191-22-002168","txn_seq":4,"anchor":"line-4","filing_url":"/filing/0001209191-22-002168","line_url":"/filing/0001209191-22-002168#line-4","is_derivative":false,"issuer_cik":"0001134657","issuer_name":"iTeos Therapeutics, Inc.","issuer_ticker":"ITOS","issuer_name_source":null,"issuer_url":"/issuer/0001134657","owner_cik":null,"owner_name":"Foley Todd; MPM BioVentures 2014 LLC; MPM BioVentures 2014 (B), L.P.; MPM ASSET MANAGEMENT INVESTORS BV2018 LLC; MPM Asset Management Investors BV2014 LLC; MPM BioVentures 2014 GP LLC; MPM BIOVENTURES 2018 (B), L.P.; MPM BioVentures 2014, L.P.; EVNIN LUKE","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":94745.0,"shares_display":"94,745","price_per_share":42.05,"price_display":"42.05","price_state":"stated","total_value":3984027.25,"total_display":"3,984,027.25","shares_owned_after":2790725.0,"shares_owned_after_display":"2,790,725","ownership_form":"I","is_10b5_1":null,"transaction_date":"2022-01-04","filed_date":"2022-01-06","scope":"insider"},{"id":6692846,"accession":"0001209191-22-002168","txn_seq":3,"anchor":"line-3","filing_url":"/filing/0001209191-22-002168","line_url":"/filing/0001209191-22-002168#line-3","is_derivative":false,"issuer_cik":"0001134657","issuer_name":"iTeos Therapeutics, Inc.","issuer_ticker":"ITOS","issuer_name_source":null,"issuer_url":"/issuer/0001134657","owner_cik":null,"owner_name":"Foley Todd; MPM BioVentures 2014 LLC; MPM BioVentures 2014 (B), L.P.; MPM ASSET MANAGEMENT INVESTORS BV2018 LLC; MPM Asset Management Investors BV2014 LLC; MPM BioVentures 2014 GP LLC; MPM BIOVENTURES 2018 (B), L.P.; MPM BioVentures 2014, L.P.; EVNIN LUKE","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":19366.0,"shares_display":"19,366","price_per_share":43.2,"price_display":"43.20","price_state":"stated","total_value":836611.2,"total_display":"836,611.20","shares_owned_after":2771359.0,"shares_owned_after_display":"2,771,359","ownership_form":"I","is_10b5_1":null,"transaction_date":"2022-01-04","filed_date":"2022-01-06","scope":"insider"},{"id":6692844,"accession":"0001209191-22-002168","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001209191-22-002168","line_url":"/filing/0001209191-22-002168#line-2","is_derivative":false,"issuer_cik":"0001134657","issuer_name":"iTeos Therapeutics, Inc.","issuer_ticker":"ITOS","issuer_name_source":null,"issuer_url":"/issuer/0001134657","owner_cik":null,"owner_name":"Foley Todd; MPM BioVentures 2014 LLC; MPM BioVentures 2014 (B), L.P.; MPM ASSET MANAGEMENT INVESTORS BV2018 LLC; MPM Asset Management Investors BV2014 LLC; MPM BioVentures 2014 GP LLC; MPM BIOVENTURES 2018 (B), L.P.; MPM BioVentures 2014, L.P.; EVNIN LUKE","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":7671.0,"shares_display":"7,671","price_per_share":46.47,"price_display":"46.47","price_state":"stated","total_value":356471.37,"total_display":"356,471.37","shares_owned_after":2756920.0,"shares_owned_after_display":"2,756,920","ownership_form":"I","is_10b5_1":null,"transaction_date":"2022-01-04","filed_date":"2022-01-06","scope":"insider"},{"id":6692840,"accession":"0001209191-22-002168","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001209191-22-002168","line_url":"/filing/0001209191-22-002168#line-1","is_derivative":false,"issuer_cik":"0001134657","issuer_name":"iTeos Therapeutics, Inc.","issuer_ticker":"ITOS","issuer_name_source":null,"issuer_url":"/issuer/0001134657","owner_cik":null,"owner_name":"Foley Todd; MPM BioVentures 2014 LLC; MPM BioVentures 2014 (B), L.P.; MPM ASSET MANAGEMENT INVESTORS BV2018 LLC; MPM Asset Management Investors BV2014 LLC; MPM BioVentures 2014 GP LLC; MPM BIOVENTURES 2018 (B), L.P.; MPM BioVentures 2014, L.P.; EVNIN LUKE","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":6768.0,"shares_display":"6,768","price_per_share":45.32,"price_display":"45.32","price_state":"stated","total_value":306725.76,"total_display":"306,725.76","shares_owned_after":2764591.0,"shares_owned_after_display":"2,764,591","ownership_form":"I","is_10b5_1":null,"transaction_date":"2022-01-04","filed_date":"2022-01-06","scope":"insider"},{"id":5173204,"accession":"0001209191-21-068408","txn_seq":9,"anchor":"line-9","filing_url":"/filing/0001209191-21-068408","line_url":"/filing/0001209191-21-068408#line-9","is_derivative":false,"issuer_cik":"0001134657","issuer_name":"iTeos Therapeutics, Inc.","issuer_ticker":"ITOS","issuer_name_source":null,"issuer_url":"/issuer/0001134657","owner_cik":null,"owner_name":"MPM Asset Management Investors BV2014 LLC; MPM BIOVENTURES 2018 (B), L.P.; MPM BioVentures 2014 GP LLC; EVNIN LUKE; MPM BioVentures 2014 LLC; Foley Todd; MPM BioVentures 2014, L.P.; MPM ASSET MANAGEMENT INVESTORS BV2018 LLC; MPM BioVentures 2014 (B), L.P.","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":17962.0,"shares_display":"17,962","price_per_share":33.15,"price_display":"33.15","price_state":"stated","total_value":595440.3,"total_display":"595,440.30","shares_owned_after":2886964.0,"shares_owned_after_display":"2,886,964","ownership_form":"I","is_10b5_1":null,"transaction_date":"2021-12-07","filed_date":"2021-12-07","scope":"insider"},{"id":5173200,"accession":"0001209191-21-068408","txn_seq":8,"anchor":"line-8","filing_url":"/filing/0001209191-21-068408","line_url":"/filing/0001209191-21-068408#line-8","is_derivative":false,"issuer_cik":"0001134657","issuer_name":"iTeos Therapeutics, Inc.","issuer_ticker":"ITOS","issuer_name_source":null,"issuer_url":"/issuer/0001134657","owner_cik":null,"owner_name":"MPM Asset Management Investors BV2014 LLC; MPM BIOVENTURES 2018 (B), L.P.; MPM BioVentures 2014 GP LLC; EVNIN LUKE; MPM BioVentures 2014 LLC; Foley Todd; MPM BioVentures 2014, L.P.; MPM ASSET MANAGEMENT INVESTORS BV2018 LLC; MPM BioVentures 2014 (B), L.P.","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":1494.0,"shares_display":"1,494","price_per_share":34.11,"price_display":"34.11","price_state":"stated","total_value":50960.34,"total_display":"50,960.34","shares_owned_after":2885470.0,"shares_owned_after_display":"2,885,470","ownership_form":"I","is_10b5_1":null,"transaction_date":"2021-12-07","filed_date":"2021-12-07","scope":"insider"},{"id":5173196,"accession":"0001209191-21-068408","txn_seq":7,"anchor":"line-7","filing_url":"/filing/0001209191-21-068408","line_url":"/filing/0001209191-21-068408#line-7","is_derivative":false,"issuer_cik":"0001134657","issuer_name":"iTeos Therapeutics, Inc.","issuer_ticker":"ITOS","issuer_name_source":null,"issuer_url":"/issuer/0001134657","owner_cik":null,"owner_name":"MPM Asset Management Investors BV2014 LLC; MPM BIOVENTURES 2018 (B), L.P.; MPM BioVentures 2014 GP LLC; EVNIN LUKE; MPM BioVentures 2014 LLC; Foley Todd; MPM BioVentures 2014, L.P.; MPM ASSET MANAGEMENT INVESTORS BV2018 LLC; MPM BioVentures 2014 (B), L.P.","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":8469.0,"shares_display":"8,469","price_per_share":32.35,"price_display":"32.35","price_state":"stated","total_value":273972.15,"total_display":"273,972.15","shares_owned_after":2906665.0,"shares_owned_after_display":"2,906,665","ownership_form":"I","is_10b5_1":null,"transaction_date":"2021-12-06","filed_date":"2021-12-07","scope":"insider"},{"id":5173191,"accession":"0001209191-21-068408","txn_seq":6,"anchor":"line-6","filing_url":"/filing/0001209191-21-068408","line_url":"/filing/0001209191-21-068408#line-6","is_derivative":false,"issuer_cik":"0001134657","issuer_name":"iTeos Therapeutics, Inc.","issuer_ticker":"ITOS","issuer_name_source":null,"issuer_url":"/issuer/0001134657","owner_cik":null,"owner_name":"MPM Asset Management Investors BV2014 LLC; MPM BIOVENTURES 2018 (B), L.P.; MPM BioVentures 2014 GP LLC; EVNIN LUKE; MPM BioVentures 2014 LLC; Foley Todd; MPM BioVentures 2014, L.P.; MPM ASSET MANAGEMENT INVESTORS BV2018 LLC; MPM BioVentures 2014 (B), L.P.","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":1171.0,"shares_display":"1,171","price_per_share":33.57,"price_display":"33.57","price_state":"stated","total_value":39310.47,"total_display":"39,310.47","shares_owned_after":2905494.0,"shares_owned_after_display":"2,905,494","ownership_form":"I","is_10b5_1":null,"transaction_date":"2021-12-06","filed_date":"2021-12-07","scope":"insider"},{"id":5173187,"accession":"0001209191-21-068408","txn_seq":5,"anchor":"line-5","filing_url":"/filing/0001209191-21-068408","line_url":"/filing/0001209191-21-068408#line-5","is_derivative":false,"issuer_cik":"0001134657","issuer_name":"iTeos Therapeutics, Inc.","issuer_ticker":"ITOS","issuer_name_source":null,"issuer_url":"/issuer/0001134657","owner_cik":null,"owner_name":"MPM Asset Management Investors BV2014 LLC; MPM BIOVENTURES 2018 (B), L.P.; MPM BioVentures 2014 GP LLC; EVNIN LUKE; MPM BioVentures 2014 LLC; Foley Todd; MPM BioVentures 2014, L.P.; MPM ASSET MANAGEMENT INVESTORS BV2018 LLC; MPM BioVentures 2014 (B), L.P.","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":508.0,"shares_display":"508","price_per_share":34.08,"price_display":"34.08","price_state":"stated","total_value":17312.64,"total_display":"17,312.64","shares_owned_after":2904986.0,"shares_owned_after_display":"2,904,986","ownership_form":"I","is_10b5_1":null,"transaction_date":"2021-12-06","filed_date":"2021-12-07","scope":"insider"},{"id":5173182,"accession":"0001209191-21-068408","txn_seq":4,"anchor":"line-4","filing_url":"/filing/0001209191-21-068408","line_url":"/filing/0001209191-21-068408#line-4","is_derivative":false,"issuer_cik":"0001134657","issuer_name":"iTeos Therapeutics, Inc.","issuer_ticker":"ITOS","issuer_name_source":null,"issuer_url":"/issuer/0001134657","owner_cik":null,"owner_name":"MPM Asset Management Investors BV2014 LLC; MPM BIOVENTURES 2018 (B), L.P.; MPM BioVentures 2014 GP LLC; EVNIN LUKE; MPM BioVentures 2014 LLC; Foley Todd; MPM BioVentures 2014, L.P.; MPM ASSET MANAGEMENT INVESTORS BV2018 LLC; MPM BioVentures 2014 (B), L.P.","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":60.0,"shares_display":"60","price_per_share":35.04,"price_display":"35.04","price_state":"stated","total_value":2102.4,"total_display":"2,102.40","shares_owned_after":2904926.0,"shares_owned_after_display":"2,904,926","ownership_form":"I","is_10b5_1":null,"transaction_date":"2021-12-06","filed_date":"2021-12-07","scope":"insider"},{"id":5173178,"accession":"0001209191-21-068408","txn_seq":3,"anchor":"line-3","filing_url":"/filing/0001209191-21-068408","line_url":"/filing/0001209191-21-068408#line-3","is_derivative":false,"issuer_cik":"0001134657","issuer_name":"iTeos Therapeutics, Inc.","issuer_ticker":"ITOS","issuer_name_source":null,"issuer_url":"/issuer/0001134657","owner_cik":null,"owner_name":"MPM Asset Management Investors BV2014 LLC; MPM BIOVENTURES 2018 (B), L.P.; MPM BioVentures 2014 GP LLC; EVNIN LUKE; MPM BioVentures 2014 LLC; Foley Todd; MPM BioVentures 2014, L.P.; MPM ASSET MANAGEMENT INVESTORS BV2018 LLC; MPM BioVentures 2014 (B), L.P.","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":17569.0,"shares_display":"17,569","price_per_share":34.68,"price_display":"34.68","price_state":"stated","total_value":609292.92,"total_display":"609,292.92","shares_owned_after":2917732.0,"shares_owned_after_display":"2,917,732","ownership_form":"I","is_10b5_1":null,"transaction_date":"2021-12-03","filed_date":"2021-12-07","scope":"insider"},{"id":5173174,"accession":"0001209191-21-068408","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001209191-21-068408","line_url":"/filing/0001209191-21-068408#line-2","is_derivative":false,"issuer_cik":"0001134657","issuer_name":"iTeos Therapeutics, Inc.","issuer_ticker":"ITOS","issuer_name_source":null,"issuer_url":"/issuer/0001134657","owner_cik":null,"owner_name":"MPM Asset Management Investors BV2014 LLC; MPM BIOVENTURES 2018 (B), L.P.; MPM BioVentures 2014 GP LLC; EVNIN LUKE; MPM BioVentures 2014 LLC; Foley Todd; MPM BioVentures 2014, L.P.; MPM ASSET MANAGEMENT INVESTORS BV2018 LLC; MPM BioVentures 2014 (B), L.P.","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":2419.0,"shares_display":"2,419","price_per_share":35.44,"price_display":"35.44","price_state":"stated","total_value":85729.36,"total_display":"85,729.36","shares_owned_after":2915313.0,"shares_owned_after_display":"2,915,313","ownership_form":"I","is_10b5_1":null,"transaction_date":"2021-12-03","filed_date":"2021-12-07","scope":"insider"},{"id":5173166,"accession":"0001209191-21-068408","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001209191-21-068408","line_url":"/filing/0001209191-21-068408#line-1","is_derivative":false,"issuer_cik":"0001134657","issuer_name":"iTeos Therapeutics, Inc.","issuer_ticker":"ITOS","issuer_name_source":null,"issuer_url":"/issuer/0001134657","owner_cik":null,"owner_name":"MPM Asset Management Investors BV2014 LLC; MPM BIOVENTURES 2018 (B), L.P.; MPM BioVentures 2014 GP LLC; EVNIN LUKE; MPM BioVentures 2014 LLC; Foley Todd; MPM BioVentures 2014, L.P.; MPM ASSET MANAGEMENT INVESTORS BV2018 LLC; MPM BioVentures 2014 (B), L.P.","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":179.0,"shares_display":"179","price_per_share":36.26,"price_display":"36.26","price_state":"stated","total_value":6490.54,"total_display":"6,490.54","shares_owned_after":2915134.0,"shares_owned_after_display":"2,915,134","ownership_form":"I","is_10b5_1":null,"transaction_date":"2021-12-03","filed_date":"2021-12-07","scope":"insider"},{"id":4437038,"accession":"0001209191-21-067706","txn_seq":7,"anchor":"line-7","filing_url":"/filing/0001209191-21-067706","line_url":"/filing/0001209191-21-067706#line-7","is_derivative":false,"issuer_cik":"0001134657","issuer_name":"iTeos Therapeutics, Inc.","issuer_ticker":"ITOS","issuer_name_source":null,"issuer_url":"/issuer/0001134657","owner_cik":null,"owner_name":"MPM BioVentures 2014 (B), L.P.; MPM BIOVENTURES 2018 (B), L.P.; MPM BioVentures 2014, L.P.; Foley Todd; MPM BioVentures 2014 GP LLC; MPM ASSET MANAGEMENT INVESTORS BV2018 LLC; MPM Asset Management Investors BV2014 LLC; MPM BioVentures 2014 LLC; EVNIN LUKE","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":29757.0,"shares_display":"29,757","price_per_share":33.74,"price_display":"33.74","price_state":"stated","total_value":1004001.18,"total_display":"1,004,001.18","shares_owned_after":2942731.0,"shares_owned_after_display":"2,942,731","ownership_form":"I","is_10b5_1":null,"transaction_date":"2021-12-02","filed_date":"2021-12-02","scope":"insider"},{"id":4437034,"accession":"0001209191-21-067706","txn_seq":6,"anchor":"line-6","filing_url":"/filing/0001209191-21-067706","line_url":"/filing/0001209191-21-067706#line-6","is_derivative":false,"issuer_cik":"0001134657","issuer_name":"iTeos Therapeutics, Inc.","issuer_ticker":"ITOS","issuer_name_source":null,"issuer_url":"/issuer/0001134657","owner_cik":null,"owner_name":"MPM BioVentures 2014 (B), L.P.; MPM BIOVENTURES 2018 (B), L.P.; MPM BioVentures 2014, L.P.; Foley Todd; MPM BioVentures 2014 GP LLC; MPM ASSET MANAGEMENT INVESTORS BV2018 LLC; MPM Asset Management Investors BV2014 LLC; MPM BioVentures 2014 LLC; EVNIN LUKE","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":7430.0,"shares_display":"7,430","price_per_share":34.83,"price_display":"34.83","price_state":"stated","total_value":258786.9,"total_display":"258,786.90","shares_owned_after":2935301.0,"shares_owned_after_display":"2,935,301","ownership_form":"I","is_10b5_1":null,"transaction_date":"2021-12-02","filed_date":"2021-12-02","scope":"insider"},{"id":4437031,"accession":"0001209191-21-067706","txn_seq":5,"anchor":"line-5","filing_url":"/filing/0001209191-21-067706","line_url":"/filing/0001209191-21-067706#line-5","is_derivative":false,"issuer_cik":"0001134657","issuer_name":"iTeos Therapeutics, Inc.","issuer_ticker":"ITOS","issuer_name_source":null,"issuer_url":"/issuer/0001134657","owner_cik":null,"owner_name":"MPM BioVentures 2014 (B), L.P.; MPM BIOVENTURES 2018 (B), L.P.; MPM BioVentures 2014, L.P.; Foley Todd; MPM BioVentures 2014 GP LLC; MPM ASSET MANAGEMENT INVESTORS BV2018 LLC; MPM Asset Management Investors BV2014 LLC; MPM BioVentures 2014 LLC; EVNIN LUKE","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":6042.0,"shares_display":"6,042","price_per_share":33.82,"price_display":"33.82","price_state":"stated","total_value":204340.44,"total_display":"204,340.44","shares_owned_after":2978841.0,"shares_owned_after_display":"2,978,841","ownership_form":"I","is_10b5_1":null,"transaction_date":"2021-12-01","filed_date":"2021-12-02","scope":"insider"},{"id":4437026,"accession":"0001209191-21-067706","txn_seq":4,"anchor":"line-4","filing_url":"/filing/0001209191-21-067706","line_url":"/filing/0001209191-21-067706#line-4","is_derivative":false,"issuer_cik":"0001134657","issuer_name":"iTeos Therapeutics, Inc.","issuer_ticker":"ITOS","issuer_name_source":null,"issuer_url":"/issuer/0001134657","owner_cik":null,"owner_name":"MPM BioVentures 2014 (B), L.P.; MPM BIOVENTURES 2018 (B), L.P.; MPM BioVentures 2014, L.P.; Foley Todd; MPM BioVentures 2014 GP LLC; MPM ASSET MANAGEMENT INVESTORS BV2018 LLC; MPM Asset Management Investors BV2014 LLC; MPM BioVentures 2014 LLC; EVNIN LUKE","owner_url":null,"role":"Ten percent owner","officer_title":null,"security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":5457.0,"shares_display":"5,457","price_per_share":34.61,"price_display":"34.61","price_state":"stated","total_value":188866.77,"total_display":"188,866.77","shares_owned_after":2973384.0,"shares_owned_after_display":"2,973,384","ownership_form":"I","is_10b5_1":null,"transaction_date":"2021-12-01","filed_date":"2021-12-02","scope":"insider"}],"next_cursor":"2021-12-01|4437026","ledger_fault":false,"count":{"value":0,"kind":"exact"},"open_market_only":false,"composition":{"kind":"exact","rows":[{"code":"P","label":"Open-market purchase","n":0,"open_market":true},{"code":"S","label":"Open-market sale","n":0,"open_market":true},{"code":"M","label":"Option exercise","n":0,"open_market":false},{"code":"A","label":"Grant or award","n":0,"open_market":false},{"code":"F","label":"Tax withholding","n":0,"open_market":false},{"code":"D","label":"Disposition to the issuer","n":0,"open_market":false},{"code":"X","label":"In-the-money option exercise","n":0,"open_market":false}],"total":0},"affiliations":[{"type":"issuer","type_label":"ISSUER","cik":"0001785530","name":"Werewolf Therapeutics, Inc.","url":"/issuer/0001785530","role":"Ten percent owner, Other","n_filings":11,"first_seen":"2021-05-06","last_seen":"2025-12-04"},{"type":"issuer","type_label":"ISSUER","cik":"0001808865","name":"iTeos Therapeutics, Inc.","url":"/issuer/0001808865","role":"Ten percent owner, Other","n_filings":20,"first_seen":"2020-07-29","last_seen":"2025-05-15"},{"type":"issuer","type_label":"ISSUER","cik":"0001689375","name":"Entrada Therapeutics, Inc.","url":"/issuer/0001689375","role":"Ten percent owner","n_filings":2,"first_seen":"2021-11-04","last_seen":"2024-12-12"},{"type":"issuer","type_label":"ISSUER","cik":"0001708493","name":"Harpoon Therapeutics, Inc.","url":"/issuer/0001708493","role":"Ten percent owner, Other","n_filings":8,"first_seen":"2019-02-14","last_seen":"2021-04-15"},{"type":"issuer","type_label":"ISSUER","cik":"0001671818","name":"Oncorus, Inc.","url":"/issuer/0001671818","role":"Ten percent owner","n_filings":1,"first_seen":"2020-10-08","last_seen":"2020-10-08"},{"type":"issuer","type_label":"ISSUER","cik":"0001808158","name":"Repare Therapeutics Inc.","url":"/issuer/0001808158","role":"Ten percent owner","n_filings":1,"first_seen":"2020-06-25","last_seen":"2020-06-25"},{"type":"issuer","type_label":"ISSUER","cik":"0001750019","name":"TCR2 THERAPEUTICS INC.","url":"/issuer/0001750019","role":"Ten percent owner","n_filings":1,"first_seen":"2019-02-21","last_seen":"2019-02-21"}],"order_statement":"Newest transaction date first, id breaking the tie.","canonical_url":"https://ebomi.com/insider/0001609495","retrieved_at":"2026-08-21T16:35:48+00:00","coverage":{"filings":1505395,"transactions":4290787,"issuers":28597,"insiders":152303,"first_filed_date":"2003-06-30","last_filed_date":"2026-08-20","last_ingest":"2026-08-21T05:23:33.898496+00:00","counts_are":{"filings":"estimate","transactions":"estimate","issuers":"estimate","insiders":"estimate"},"source":"SEC EDGAR Form 4 filings, parsed by ebomi","fault":false},"license":{"underlying_records":"US SEC filings are public records of the United States government and are not subject to copyright. The transactional facts in them are not ours to license.","this_presentation":"The parsing, normalisation, curation, and presentation are ebomi's own work.","grant":"undecided","grant_note":"The open licence for ebomi's own layer is an open owner decision (SPEC-20260731T1159Z open question 3: CC BY 4.0 or CC0 with a citation request). Until it is taken, no grant is asserted here.","citation_request":"Balogh, A. Insider trading. Scientific Data 10, 237 (2023)","url":"https://ebomi.com/license"},"fair_use":{"policy":"These JSON endpoints are open and unauthenticated. Please read them at a human pace, identify your client in the User-Agent header, and use the published dataset for bulk work rather than crawling page by page.","bulk_alternative":"doi:10.1038/s41597-023-02147-6"}}