{"entity":{"type":"insider","cik":"0001347582","url":"/insider/0001347582","json_url":"/insider/0001347582.json","name":"Protopapas Anna","name_source":"as-filed","also_issuer":false,"cross_url":null},"coverage_statement":{"n_transactions":34,"n_filings":28,"first":"2006-11-02","last":"2025-01-17","span_basis":"filed_date"},"name_variants":[{"name":"Protopapas Anna","source":"filing","n_filings":28,"first_seen":"2006-11-02","last_seen":"2025-01-17"}],"transactions":[{"id":4198407,"accession":"0001104659-25-004596","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001104659-25-004596","line_url":"/filing/0001104659-25-004596#line-2","is_derivative":false,"issuer_cik":"0001347582","issuer_name":"Mersana Therapeutics, Inc.","issuer_ticker":"MRSN","issuer_name_source":null,"issuer_url":"/issuer/0001347582","owner_cik":"0001347582","owner_name":"Protopapas Anna","owner_url":"/insider/0001347582","role":"Director","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":8637.0,"shares_display":"8,637","price_per_share":0.58,"price_display":"0.58","price_state":"stated","total_value":5009.46,"total_display":"5,009.46","shares_owned_after":168041.0,"shares_owned_after_display":"168,041","ownership_form":"D","is_10b5_1":null,"transaction_date":"2025-01-16","filed_date":"2025-01-17","scope":"insider"},{"id":4198401,"accession":"0001104659-25-004187","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001104659-25-004187","line_url":"/filing/0001104659-25-004187#line-2","is_derivative":false,"issuer_cik":"0001347582","issuer_name":"Mersana Therapeutics, Inc.","issuer_ticker":"MRSN","issuer_name_source":null,"issuer_url":"/issuer/0001347582","owner_cik":"0001347582","owner_name":"Protopapas Anna","owner_url":"/insider/0001347582","role":"Director","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":6191.0,"shares_display":"6,191","price_per_share":0.63,"price_display":"0.63","price_state":"stated","total_value":3900.33,"total_display":"3,900.33","shares_owned_after":155428.0,"shares_owned_after_display":"155,428","ownership_form":"D","is_10b5_1":null,"transaction_date":"2025-01-15","filed_date":"2025-01-16","scope":"insider"},{"id":5206080,"accession":"0001104659-25-003881","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001104659-25-003881","line_url":"/filing/0001104659-25-003881#line-2","is_derivative":false,"issuer_cik":"0001347582","issuer_name":"Mersana Therapeutics, Inc.","issuer_ticker":"MRSN","issuer_name_source":null,"issuer_url":"/issuer/0001347582","owner_cik":"0001347582","owner_name":"Protopapas Anna","owner_url":"/insider/0001347582","role":"Director","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":11534.0,"shares_display":"11,534","price_per_share":0.66,"price_display":"0.66","price_state":"stated","total_value":7612.44,"total_display":"7,612.44","shares_owned_after":144869.0,"shares_owned_after_display":"144,869","ownership_form":"D","is_10b5_1":null,"transaction_date":"2025-01-14","filed_date":"2025-01-15","scope":"insider"},{"id":2184050,"accession":"0001104659-24-004551","txn_seq":5,"anchor":"line-5","filing_url":"/filing/0001104659-24-004551","line_url":"/filing/0001104659-24-004551#line-5","is_derivative":false,"issuer_cik":"0001347582","issuer_name":"Mersana Therapeutics, Inc.","issuer_ticker":"MRSN","issuer_name_source":null,"issuer_url":"/issuer/0001347582","owner_cik":"0001347582","owner_name":"Protopapas Anna","owner_url":"/insider/0001347582","role":"Director","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":29399.0,"shares_display":"29,399","price_per_share":2.71,"price_display":"2.71","price_state":"stated","total_value":79671.29,"total_display":"79,671.29","shares_owned_after":125153.0,"shares_owned_after_display":"125,153","ownership_form":"D","is_10b5_1":null,"transaction_date":"2024-01-16","filed_date":"2024-01-17","scope":"insider"},{"id":7974244,"accession":"0001209191-23-059368","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001209191-23-059368","line_url":"/filing/0001209191-23-059368#line-2","is_derivative":false,"issuer_cik":"0001347582","issuer_name":"Nuvalent, Inc.","issuer_ticker":"NUVL","issuer_name_source":null,"issuer_url":"/issuer/0001347582","owner_cik":"0001347582","owner_name":"Protopapas Anna","owner_url":"/insider/0001347582","role":"Director","officer_title":null,"security_title":"Class A Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":5000.0,"shares_display":"5,000","price_per_share":75.67,"price_display":"75.67","price_state":"stated","total_value":378350.0,"total_display":"378,350.00","shares_owned_after":0.0,"shares_owned_after_display":"0","ownership_form":"D","is_10b5_1":null,"transaction_date":"2023-12-18","filed_date":"2023-12-20","scope":"insider"},{"id":8224088,"accession":"0001104659-23-004744","txn_seq":6,"anchor":"line-6","filing_url":"/filing/0001104659-23-004744","line_url":"/filing/0001104659-23-004744#line-6","is_derivative":false,"issuer_cik":"0001347582","issuer_name":"Mersana Therapeutics, Inc.","issuer_ticker":"MRSN","issuer_name_source":null,"issuer_url":"/issuer/0001347582","owner_cik":"0001347582","owner_name":"Protopapas Anna","owner_url":"/insider/0001347582","role":"Director, Officer (President & CEO)","officer_title":"President & CEO","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":17346.0,"shares_display":"17,346","price_per_share":5.74,"price_display":"5.74","price_state":"stated","total_value":99566.04,"total_display":"99,566.04","shares_owned_after":48733.0,"shares_owned_after_display":"48,733","ownership_form":"D","is_10b5_1":null,"transaction_date":"2023-01-17","filed_date":"2023-01-18","scope":"insider"},{"id":4282259,"accession":"0001104659-21-093665","txn_seq":3,"anchor":"line-3","filing_url":"/filing/0001104659-21-093665","line_url":"/filing/0001104659-21-093665#line-3","is_derivative":false,"issuer_cik":"0001347582","issuer_name":"Mersana Therapeutics, Inc.","issuer_ticker":"MRSN","issuer_name_source":null,"issuer_url":"/issuer/0001347582","owner_cik":"0001347582","owner_name":"Protopapas Anna","owner_url":"/insider/0001347582","role":"Director, Officer (President & CEO)","officer_title":"President & CEO","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":21901.0,"shares_display":"21,901","price_per_share":12.02,"price_display":"12.02","price_state":"stated","total_value":263250.02,"total_display":"263,250.02","shares_owned_after":282978.0,"shares_owned_after_display":"282,978","ownership_form":"D","is_10b5_1":null,"transaction_date":"2021-07-19","filed_date":"2021-07-19","scope":"insider"},{"id":4282252,"accession":"0001104659-21-093665","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001104659-21-093665","line_url":"/filing/0001104659-21-093665#line-2","is_derivative":false,"issuer_cik":"0001347582","issuer_name":"Mersana Therapeutics, Inc.","issuer_ticker":"MRSN","issuer_name_source":null,"issuer_url":"/issuer/0001347582","owner_cik":"0001347582","owner_name":"Protopapas Anna","owner_url":"/insider/0001347582","role":"Director, Officer (President & CEO)","officer_title":"President & CEO","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":20043.0,"shares_display":"20,043","price_per_share":12.47,"price_display":"12.47","price_state":"stated","total_value":249936.21,"total_display":"249,936.21","shares_owned_after":304879.0,"shares_owned_after_display":"304,879","ownership_form":"D","is_10b5_1":null,"transaction_date":"2021-07-16","filed_date":"2021-07-19","scope":"insider"},{"id":3556640,"accession":"0001347582-08-000014","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001347582-08-000014","line_url":"/filing/0001347582-08-000014#line-1","is_derivative":false,"issuer_cik":"0001002637","issuer_name":"MILLENNIUM PHARMACEUTICALS INC","issuer_ticker":"MLNM","issuer_name_source":null,"issuer_url":"/issuer/0001002637","owner_cik":"0001347582","owner_name":"Protopapas Anna","owner_url":"/insider/0001347582","role":"Officer (Senior Vice President)","officer_title":"Senior Vice President","security_title":"Common stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":2041.0,"shares_display":"2,041","price_per_share":24.88,"price_display":"24.88","price_state":"stated","total_value":50780.08,"total_display":"50,780.08","shares_owned_after":170073.0,"shares_owned_after_display":"170,073","ownership_form":"D","is_10b5_1":null,"transaction_date":"2008-05-01","filed_date":"2008-05-05","scope":"insider"},{"id":3423300,"accession":"0001347582-08-000012","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001347582-08-000012","line_url":"/filing/0001347582-08-000012#line-1","is_derivative":false,"issuer_cik":"0001002637","issuer_name":"MILLENNIUM PHARMACEUTICALS INC","issuer_ticker":"MLNM","issuer_name_source":null,"issuer_url":"/issuer/0001002637","owner_cik":"0001347582","owner_name":"Protopapas Anna","owner_url":"/insider/0001347582","role":"Officer (Senior Vice President)","officer_title":"Senior Vice President","security_title":"Common stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":2010.0,"shares_display":"2,010","price_per_share":13.3397,"price_display":"13.34","price_state":"stated","total_value":26812.797,"total_display":"26,812.80","shares_owned_after":170073.0,"shares_owned_after_display":"170,073","ownership_form":"D","is_10b5_1":null,"transaction_date":"2008-03-07","filed_date":"2008-03-11","scope":"insider"},{"id":3945245,"accession":"0001347582-08-000010","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001347582-08-000010","line_url":"/filing/0001347582-08-000010#line-2","is_derivative":false,"issuer_cik":"0001002637","issuer_name":"MILLENNIUM PHARMACEUTICALS INC","issuer_ticker":"MLNM","issuer_name_source":null,"issuer_url":"/issuer/0001002637","owner_cik":"0001347582","owner_name":"Protopapas Anna","owner_url":"/insider/0001347582","role":"Officer (Senior Vice President)","officer_title":"Senior Vice President","security_title":"Common stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":3431.0,"shares_display":"3,431","price_per_share":13.6739,"price_display":"13.67","price_state":"stated","total_value":46915.1509,"total_display":"46,915.15","shares_owned_after":172083.0,"shares_owned_after_display":"172,083","ownership_form":"D","is_10b5_1":null,"transaction_date":"2008-02-29","filed_date":"2008-03-04","scope":"insider"},{"id":3945242,"accession":"0001347582-08-000010","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001347582-08-000010","line_url":"/filing/0001347582-08-000010#line-1","is_derivative":false,"issuer_cik":"0001002637","issuer_name":"MILLENNIUM PHARMACEUTICALS INC","issuer_ticker":"MLNM","issuer_name_source":null,"issuer_url":"/issuer/0001002637","owner_cik":"0001347582","owner_name":"Protopapas Anna","owner_url":"/insider/0001347582","role":"Officer (Senior Vice President)","officer_title":"Senior Vice President","security_title":"Common stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":858.0,"shares_display":"858","price_per_share":13.6745,"price_display":"13.67","price_state":"stated","total_value":11732.721,"total_display":"11,732.72","shares_owned_after":175514.0,"shares_owned_after_display":"175,514","ownership_form":"D","is_10b5_1":null,"transaction_date":"2008-02-29","filed_date":"2008-03-04","scope":"insider"},{"id":3578539,"accession":"0001347582-08-000008","txn_seq":4,"anchor":"line-4","filing_url":"/filing/0001347582-08-000008","line_url":"/filing/0001347582-08-000008#line-4","is_derivative":false,"issuer_cik":"0001002637","issuer_name":"MILLENNIUM PHARMACEUTICALS INC","issuer_ticker":"MLNM","issuer_name_source":null,"issuer_url":"/issuer/0001002637","owner_cik":"0001347582","owner_name":"Protopapas Anna","owner_url":"/insider/0001347582","role":"Officer (Senior Vice President)","officer_title":"Senior Vice President","security_title":"Common stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":3561.0,"shares_display":"3,561","price_per_share":14.03,"price_display":"14.03","price_state":"stated","total_value":49960.83,"total_display":"49,960.83","shares_owned_after":176372.0,"shares_owned_after_display":"176,372","ownership_form":"D","is_10b5_1":null,"transaction_date":"2008-02-19","filed_date":"2008-02-19","scope":"insider"},{"id":4079643,"accession":"0001347582-08-000006","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001347582-08-000006","line_url":"/filing/0001347582-08-000006#line-2","is_derivative":false,"issuer_cik":"0001002637","issuer_name":"MILLENNIUM PHARMACEUTICALS INC","issuer_ticker":"MLNM","issuer_name_source":null,"issuer_url":"/issuer/0001002637","owner_cik":"0001347582","owner_name":"Protopapas Anna","owner_url":"/insider/0001347582","role":"Officer (Senior Vice President)","officer_title":"Senior Vice President","security_title":"Common stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":3812.0,"shares_display":"3,812","price_per_share":16.53,"price_display":"16.53","price_state":"stated","total_value":63012.36,"total_display":"63,012.36","shares_owned_after":122227.0,"shares_owned_after_display":"122,227","ownership_form":"D","is_10b5_1":null,"transaction_date":"2008-01-18","filed_date":"2008-01-22","scope":"insider"},{"id":2708664,"accession":"0001347582-08-000004","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001347582-08-000004","line_url":"/filing/0001347582-08-000004#line-1","is_derivative":false,"issuer_cik":"0001002637","issuer_name":"MILLENNIUM PHARMACEUTICALS INC","issuer_ticker":"MLNM","issuer_name_source":null,"issuer_url":"/issuer/0001002637","owner_cik":"0001347582","owner_name":"Protopapas Anna","owner_url":"/insider/0001347582","role":"Officer (Senior Vice President)","officer_title":"Senior Vice President","security_title":"Common stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":1071.0,"shares_display":"1,071","price_per_share":15.23,"price_display":"15.23","price_state":"stated","total_value":16311.33,"total_display":"16,311.33","shares_owned_after":122227.0,"shares_owned_after_display":"122,227","ownership_form":"D","is_10b5_1":null,"transaction_date":"2008-01-08","filed_date":"2008-01-09","scope":"insider"},{"id":3631362,"accession":"0001347582-08-000002","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001347582-08-000002","line_url":"/filing/0001347582-08-000002#line-1","is_derivative":false,"issuer_cik":"0001002637","issuer_name":"MILLENNIUM PHARMACEUTICALS INC","issuer_ticker":"MLNM","issuer_name_source":null,"issuer_url":"/issuer/0001002637","owner_cik":"0001347582","owner_name":"Protopapas Anna","owner_url":"/insider/0001347582","role":"Officer (Senior Vice President)","officer_title":"Senior Vice President","security_title":"Common stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":4091.0,"shares_display":"4,091","price_per_share":16.11,"price_display":"16.11","price_state":"stated","total_value":65906.01,"total_display":"65,906.01","shares_owned_after":123298.0,"shares_owned_after_display":"123,298","ownership_form":"D","is_10b5_1":null,"transaction_date":"2008-01-03","filed_date":"2008-01-07","scope":"insider"},{"id":7859610,"accession":"0001347582-07-000031","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001347582-07-000031","line_url":"/filing/0001347582-07-000031#line-1","is_derivative":false,"issuer_cik":"0001002637","issuer_name":"MILLENNIUM PHARMACEUTICALS INC","issuer_ticker":"MLNM","issuer_name_source":null,"issuer_url":"/issuer/0001002637","owner_cik":"0001347582","owner_name":"Protopapas Anna","owner_url":"/insider/0001347582","role":"Officer (Senior Vice President)","officer_title":"Senior Vice President","security_title":"Common stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":5674.0,"shares_display":"5,674","price_per_share":14.55,"price_display":"14.55","price_state":"stated","total_value":82556.7,"total_display":"82,556.70","shares_owned_after":127389.0,"shares_owned_after_display":"127,389","ownership_form":"D","is_10b5_1":null,"transaction_date":"2007-12-03","filed_date":"2007-12-03","scope":"insider"},{"id":6843069,"accession":"0001347582-07-000029","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001347582-07-000029","line_url":"/filing/0001347582-07-000029#line-1","is_derivative":false,"issuer_cik":"0001002637","issuer_name":"MILLENNIUM PHARMACEUTICALS INC","issuer_ticker":"MLNM","issuer_name_source":null,"issuer_url":"/issuer/0001002637","owner_cik":"0001347582","owner_name":"Protopapas Anna","owner_url":"/insider/0001347582","role":"Officer (Senior Vice President)","officer_title":"Senior Vice President","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":5000.0,"shares_display":"5,000","price_per_share":14.32,"price_display":"14.32","price_state":"stated","total_value":71600.0,"total_display":"71,600.00","shares_owned_after":133063.0,"shares_owned_after_display":"133,063","ownership_form":"D","is_10b5_1":null,"transaction_date":"2007-11-26","filed_date":"2007-11-27","scope":"insider"},{"id":7092692,"accession":"0001347582-07-000026","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001347582-07-000026","line_url":"/filing/0001347582-07-000026#line-1","is_derivative":false,"issuer_cik":"0001002637","issuer_name":"MILLENNIUM PHARMACEUTICALS INC","issuer_ticker":"MLNM","issuer_name_source":null,"issuer_url":"/issuer/0001002637","owner_cik":"0001347582","owner_name":"Protopapas Anna","owner_url":"/insider/0001347582","role":"Officer (Senior Vice President)","officer_title":"Senior Vice President","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":5000.0,"shares_display":"5,000","price_per_share":13.62,"price_display":"13.62","price_state":"stated","total_value":68100.0,"total_display":"68,100.00","shares_owned_after":138063.0,"shares_owned_after_display":"138,063","ownership_form":"D","is_10b5_1":null,"transaction_date":"2007-11-19","filed_date":"2007-11-20","scope":"insider"},{"id":7366392,"accession":"0001347582-07-000024","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001347582-07-000024","line_url":"/filing/0001347582-07-000024#line-1","is_derivative":false,"issuer_cik":"0001002637","issuer_name":"MILLENNIUM PHARMACEUTICALS INC","issuer_ticker":"MLNM","issuer_name_source":null,"issuer_url":"/issuer/0001002637","owner_cik":"0001347582","owner_name":"Protopapas Anna","owner_url":"/insider/0001347582","role":"Officer (Senior Vice President)","officer_title":"Senior Vice President","security_title":"Common stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":5000.0,"shares_display":"5,000","price_per_share":13.41,"price_display":"13.41","price_state":"stated","total_value":67050.0,"total_display":"67,050.00","shares_owned_after":143063.0,"shares_owned_after_display":"143,063","ownership_form":"D","is_10b5_1":null,"transaction_date":"2007-11-12","filed_date":"2007-11-13","scope":"insider"},{"id":7991183,"accession":"0001347582-07-000022","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001347582-07-000022","line_url":"/filing/0001347582-07-000022#line-1","is_derivative":false,"issuer_cik":"0001002637","issuer_name":"MILLENNIUM PHARMACEUTICALS INC","issuer_ticker":"MLNM","issuer_name_source":null,"issuer_url":"/issuer/0001002637","owner_cik":"0001347582","owner_name":"Protopapas Anna","owner_url":"/insider/0001347582","role":"Officer (Senior Vice President)","officer_title":"Senior Vice President","security_title":"Common stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":5000.0,"shares_display":"5,000","price_per_share":12.62,"price_display":"12.62","price_state":"stated","total_value":63100.0,"total_display":"63,100.00","shares_owned_after":148063.0,"shares_owned_after_display":"148,063","ownership_form":"D","is_10b5_1":null,"transaction_date":"2007-11-05","filed_date":"2007-11-06","scope":"insider"},{"id":7577305,"accession":"0001347582-07-000020","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001347582-07-000020","line_url":"/filing/0001347582-07-000020#line-1","is_derivative":false,"issuer_cik":"0001002637","issuer_name":"MILLENNIUM PHARMACEUTICALS INC","issuer_ticker":"MLNM","issuer_name_source":null,"issuer_url":"/issuer/0001002637","owner_cik":"0001347582","owner_name":"Protopapas Anna","owner_url":"/insider/0001347582","role":"Officer (Senior Vice President)","officer_title":"Senior Vice President","security_title":"Common stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":368.0,"shares_display":"368","price_per_share":12.0,"price_display":"12.00","price_state":"stated","total_value":4416.0,"total_display":"4,416.00","shares_owned_after":153063.0,"shares_owned_after_display":"153,063","ownership_form":"D","is_10b5_1":null,"transaction_date":"2007-11-01","filed_date":"2007-11-02","scope":"insider"},{"id":7859606,"accession":"0001347582-07-000016","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001347582-07-000016","line_url":"/filing/0001347582-07-000016#line-1","is_derivative":false,"issuer_cik":"0001002637","issuer_name":"MILLENNIUM PHARMACEUTICALS INC","issuer_ticker":"MLNM","issuer_name_source":null,"issuer_url":"/issuer/0001002637","owner_cik":"0001347582","owner_name":"Protopapas Anna","owner_url":"/insider/0001347582","role":"Officer (Senior Vice President)","officer_title":"Senior Vice President","security_title":"Common stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":1929.0,"shares_display":"1,929","price_per_share":11.07,"price_display":"11.07","price_state":"stated","total_value":21354.03,"total_display":"21,354.03","shares_owned_after":127389.0,"shares_owned_after_display":"127,389","ownership_form":"D","is_10b5_1":null,"transaction_date":"2007-05-01","filed_date":"2007-05-01","scope":"insider"},{"id":8067813,"accession":"0001347582-07-000014","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001347582-07-000014","line_url":"/filing/0001347582-07-000014#line-2","is_derivative":false,"issuer_cik":"0001002637","issuer_name":"MILLENNIUM PHARMACEUTICALS INC","issuer_ticker":"MLNM","issuer_name_source":null,"issuer_url":"/issuer/0001002637","owner_cik":"0001347582","owner_name":"Protopapas Anna","owner_url":"/insider/0001347582","role":"Officer (Senior Vice President)","officer_title":"Senior Vice President","security_title":"Common stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":4250.0,"shares_display":"4,250","price_per_share":11.56,"price_display":"11.56","price_state":"stated","total_value":49130.0,"total_display":"49,130.00","shares_owned_after":127389.0,"shares_owned_after_display":"127,389","ownership_form":"D","is_10b5_1":null,"transaction_date":"2007-04-09","filed_date":"2007-04-10","scope":"insider"},{"id":7151173,"accession":"0001347582-07-000012","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001347582-07-000012","line_url":"/filing/0001347582-07-000012#line-2","is_derivative":false,"issuer_cik":"0001002637","issuer_name":"MILLENNIUM PHARMACEUTICALS INC","issuer_ticker":"MLNM","issuer_name_source":null,"issuer_url":"/issuer/0001002637","owner_cik":"0001347582","owner_name":"Protopapas Anna","owner_url":"/insider/0001347582","role":"Officer (Senior Vice President)","officer_title":"Senior Vice President","security_title":"Common stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":4250.0,"shares_display":"4,250","price_per_share":11.4,"price_display":"11.40","price_state":"stated","total_value":48450.0,"total_display":"48,450.00","shares_owned_after":127389.0,"shares_owned_after_display":"127,389","ownership_form":"D","is_10b5_1":null,"transaction_date":"2007-04-02","filed_date":"2007-04-02","scope":"insider"},{"id":7092691,"accession":"0001347582-07-000010","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001347582-07-000010","line_url":"/filing/0001347582-07-000010#line-2","is_derivative":false,"issuer_cik":"0001002637","issuer_name":"MILLENNIUM PHARMACEUTICALS INC","issuer_ticker":"MLNM","issuer_name_source":null,"issuer_url":"/issuer/0001002637","owner_cik":"0001347582","owner_name":"Protopapas Anna","owner_url":"/insider/0001347582","role":"Officer (Senior Vice President)","officer_title":"Senior Vice President","security_title":"Common stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":4250.0,"shares_display":"4,250","price_per_share":11.38,"price_display":"11.38","price_state":"stated","total_value":48365.0,"total_display":"48,365.00","shares_owned_after":127389.0,"shares_owned_after_display":"127,389","ownership_form":"D","is_10b5_1":null,"transaction_date":"2007-03-26","filed_date":"2007-03-27","scope":"insider"},{"id":8554288,"accession":"0001347582-07-000008","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001347582-07-000008","line_url":"/filing/0001347582-07-000008#line-2","is_derivative":false,"issuer_cik":"0001002637","issuer_name":"MILLENNIUM PHARMACEUTICALS INC","issuer_ticker":"MLNM","issuer_name_source":null,"issuer_url":"/issuer/0001002637","owner_cik":"0001347582","owner_name":"Protopapas Anna","owner_url":"/insider/0001347582","role":"Officer (Senior Vice President)","officer_title":"Senior Vice President","security_title":"Common stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":4088.0,"shares_display":"4,088","price_per_share":10.73,"price_display":"10.73","price_state":"stated","total_value":43864.24,"total_display":"43,864.24","shares_owned_after":127389.0,"shares_owned_after_display":"127,389","ownership_form":"D","is_10b5_1":null,"transaction_date":"2007-03-19","filed_date":"2007-03-20","scope":"insider"},{"id":7406163,"accession":"0001347582-07-000006","txn_seq":11,"anchor":"line-11","filing_url":"/filing/0001347582-07-000006","line_url":"/filing/0001347582-07-000006#line-11","is_derivative":false,"issuer_cik":"0001002637","issuer_name":"MILLENNIUM PHARMACEUTICALS INC","issuer_ticker":"MLNM","issuer_name_source":null,"issuer_url":"/issuer/0001002637","owner_cik":"0001347582","owner_name":"Protopapas Anna","owner_url":"/insider/0001347582","role":"Officer (Senior Vice President)","officer_title":"Senior Vice President","security_title":"Common stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":1970.0,"shares_display":"1,970","price_per_share":10.64,"price_display":"10.64","price_state":"stated","total_value":20960.8,"total_display":"20,960.80","shares_owned_after":127389.0,"shares_owned_after_display":"127,389","ownership_form":"D","is_10b5_1":null,"transaction_date":"2007-03-12","filed_date":"2007-03-13","scope":"insider"},{"id":7406161,"accession":"0001347582-07-000006","txn_seq":10,"anchor":"line-10","filing_url":"/filing/0001347582-07-000006","line_url":"/filing/0001347582-07-000006#line-10","is_derivative":false,"issuer_cik":"0001002637","issuer_name":"MILLENNIUM PHARMACEUTICALS INC","issuer_ticker":"MLNM","issuer_name_source":null,"issuer_url":"/issuer/0001002637","owner_cik":"0001347582","owner_name":"Protopapas Anna","owner_url":"/insider/0001347582","role":"Officer (Senior Vice President)","officer_title":"Senior Vice President","security_title":"Common stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":1400.0,"shares_display":"1,400","price_per_share":10.58,"price_display":"10.58","price_state":"stated","total_value":14812.0,"total_display":"14,812.00","shares_owned_after":130492.0,"shares_owned_after_display":"130,492","ownership_form":"D","is_10b5_1":null,"transaction_date":"2007-03-09","filed_date":"2007-03-13","scope":"insider"},{"id":7406159,"accession":"0001347582-07-000006","txn_seq":9,"anchor":"line-9","filing_url":"/filing/0001347582-07-000006","line_url":"/filing/0001347582-07-000006#line-9","is_derivative":false,"issuer_cik":"0001002637","issuer_name":"MILLENNIUM PHARMACEUTICALS INC","issuer_ticker":"MLNM","issuer_name_source":null,"issuer_url":"/issuer/0001002637","owner_cik":"0001347582","owner_name":"Protopapas Anna","owner_url":"/insider/0001347582","role":"Officer (Senior Vice President)","officer_title":"Senior Vice President","security_title":"Common stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":1200.0,"shares_display":"1,200","price_per_share":10.59,"price_display":"10.59","price_state":"stated","total_value":12708.0,"total_display":"12,708.00","shares_owned_after":131892.0,"shares_owned_after_display":"131,892","ownership_form":"D","is_10b5_1":null,"transaction_date":"2007-03-09","filed_date":"2007-03-13","scope":"insider"},{"id":7406156,"accession":"0001347582-07-000006","txn_seq":8,"anchor":"line-8","filing_url":"/filing/0001347582-07-000006","line_url":"/filing/0001347582-07-000006#line-8","is_derivative":false,"issuer_cik":"0001002637","issuer_name":"MILLENNIUM PHARMACEUTICALS INC","issuer_ticker":"MLNM","issuer_name_source":null,"issuer_url":"/issuer/0001002637","owner_cik":"0001347582","owner_name":"Protopapas Anna","owner_url":"/insider/0001347582","role":"Officer (Senior Vice President)","officer_title":"Senior Vice President","security_title":"Common stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":1133.0,"shares_display":"1,133","price_per_share":10.57,"price_display":"10.57","price_state":"stated","total_value":11975.81,"total_display":"11,975.81","shares_owned_after":129359.0,"shares_owned_after_display":"129,359","ownership_form":"D","is_10b5_1":null,"transaction_date":"2007-03-09","filed_date":"2007-03-13","scope":"insider"},{"id":7406154,"accession":"0001347582-07-000006","txn_seq":7,"anchor":"line-7","filing_url":"/filing/0001347582-07-000006","line_url":"/filing/0001347582-07-000006#line-7","is_derivative":false,"issuer_cik":"0001002637","issuer_name":"MILLENNIUM PHARMACEUTICALS INC","issuer_ticker":"MLNM","issuer_name_source":null,"issuer_url":"/issuer/0001002637","owner_cik":"0001347582","owner_name":"Protopapas Anna","owner_url":"/insider/0001347582","role":"Officer (Senior Vice President)","officer_title":"Senior Vice President","security_title":"Common stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":100.0,"shares_display":"100","price_per_share":10.6001,"price_display":"10.60","price_state":"stated","total_value":1060.01,"total_display":"1,060.01","shares_owned_after":133092.0,"shares_owned_after_display":"133,092","ownership_form":"D","is_10b5_1":null,"transaction_date":"2007-03-09","filed_date":"2007-03-13","scope":"insider"},{"id":7621227,"accession":"0001347582-07-000002","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001347582-07-000002","line_url":"/filing/0001347582-07-000002#line-1","is_derivative":false,"issuer_cik":"0001002637","issuer_name":"MILLENNIUM PHARMACEUTICALS INC","issuer_ticker":"MLNM","issuer_name_source":null,"issuer_url":"/issuer/0001002637","owner_cik":"0001347582","owner_name":"Protopapas Anna","owner_url":"/insider/0001347582","role":"Officer (Senior Vice President)","officer_title":"Senior Vice President","security_title":"Common stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":4524.0,"shares_display":"4,524","price_per_share":11.02,"price_display":"11.02","price_state":"stated","total_value":49854.48,"total_display":"49,854.48","shares_owned_after":56829.0,"shares_owned_after_display":"56,829","ownership_form":"D","is_10b5_1":null,"transaction_date":"2007-01-04","filed_date":"2007-01-08","scope":"insider"},{"id":3950383,"accession":"0001347582-06-000010","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001347582-06-000010","line_url":"/filing/0001347582-06-000010#line-1","is_derivative":false,"issuer_cik":"0001002637","issuer_name":"MILLENNIUM PHARMACEUTICALS INC","issuer_ticker":"MLNM","issuer_name_source":null,"issuer_url":"/issuer/0001002637","owner_cik":"0001347582","owner_name":"Protopapas Anna","owner_url":"/insider/0001347582","role":"Officer (Senior Vice President)","officer_title":"Senior Vice President","security_title":"Common stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":436.0,"shares_display":"436","price_per_share":11.64,"price_display":"11.64","price_state":"stated","total_value":5075.04,"total_display":"5,075.04","shares_owned_after":61353.0,"shares_owned_after_display":"61,353","ownership_form":"D","is_10b5_1":null,"transaction_date":"2006-11-01","filed_date":"2006-11-02","scope":"insider"}],"next_cursor":null,"ledger_fault":false,"count":{"value":34,"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":34,"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":34},"affiliations":[{"type":"issuer","type_label":"ISSUER","cik":"0001442836","name":"Mersana Therapeutics, Inc.","url":"/issuer/0001442836","role":"Director, Officer (President & CEO)","n_filings":6,"first_seen":"2021-07-19","last_seen":"2025-01-17"},{"type":"issuer","type_label":"ISSUER","cik":"0001861560","name":"Nuvalent, Inc.","url":"/issuer/0001861560","role":"Director","n_filings":1,"first_seen":"2023-12-20","last_seen":"2023-12-20"},{"type":"issuer","type_label":"ISSUER","cik":"0001002637","name":"MILLENNIUM PHARMACEUTICALS INC","url":"/issuer/0001002637","role":"Officer (Senior Vice President)","n_filings":21,"first_seen":"2006-11-02","last_seen":"2008-05-05"}],"order_statement":"Newest transaction date first, id breaking the tie.","canonical_url":"https://ebomi.com/insider/0001347582","retrieved_at":"2026-08-21T06:54:08+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"}}