{"entity":{"type":"insider","cik":"0001427141","url":"/insider/0001427141","json_url":"/insider/0001427141.json","name":"O'Connor William Bernard","name_source":"as-filed","also_issuer":false,"cross_url":null},"coverage_statement":{"n_transactions":37,"n_filings":22,"first":"2010-03-02","last":"2017-02-14","span_basis":"filed_date"},"name_variants":[{"name":"O'Connor William Bernard","source":"filing","n_filings":22,"first_seen":"2010-03-02","last_seen":"2017-02-14"}],"transactions":[{"id":5142977,"accession":"0001179110-17-002382","txn_seq":8,"anchor":"line-8","filing_url":"/filing/0001179110-17-002382","line_url":"/filing/0001179110-17-002382","is_derivative":false,"issuer_cik":"0001113481","issuer_name":"MEDICINES CO /DE","issuer_ticker":"MDCO","issuer_name_source":null,"issuer_url":"/issuer/0001113481","owner_cik":"0001427141","owner_name":"O'Connor William Bernard","owner_display_name":"O'Connor William Bernard","owner_url":"/insider/0001427141","role":"Officer (Chief Financial Officer)","role_mark":"O","role_mark_label":"Officer (Chief Financial Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Financial Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":57502.0,"shares_display":"57,502","price_per_share":50.0,"price_display":"50.00","price_state":"stated","total_value":2875100.0,"total_display":"2,875,100.00","total_whole":"2,875,100","shares_owned_after":20102.0,"shares_owned_after_display":"20,102","ownership_form":"D","is_10b5_1":null,"transaction_date":"2017-02-10","filed_date":"2017-02-14","scope":"insider","n_lines":4},{"id":4191777,"accession":"0001179110-17-001924","txn_seq":5,"anchor":"line-5","filing_url":"/filing/0001179110-17-001924","line_url":"/filing/0001179110-17-001924","is_derivative":false,"issuer_cik":"0001113481","issuer_name":"MEDICINES CO /DE","issuer_ticker":"MDCO","issuer_name_source":null,"issuer_url":"/issuer/0001113481","owner_cik":"0001427141","owner_name":"O'Connor William Bernard","owner_display_name":"O'Connor William Bernard","owner_url":"/insider/0001427141","role":"Officer (Chief Financial Officer)","role_mark":"O","role_mark_label":"Officer (Chief Financial Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Financial Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":15000.0,"shares_display":"15,000","price_per_share":47.07086666666667,"price_display":"47.07","price_state":"stated","total_value":706063.0,"total_display":"706,063.00","total_whole":"706,063","shares_owned_after":23002.0,"shares_owned_after_display":"23,002","ownership_form":"D","is_10b5_1":null,"transaction_date":"2017-02-07","filed_date":"2017-02-07","scope":"insider","n_lines":2},{"id":4191757,"accession":"0001179110-17-001924","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001179110-17-001924","line_url":"/filing/0001179110-17-001924#line-2","is_derivative":false,"issuer_cik":"0001113481","issuer_name":"MEDICINES CO /DE","issuer_ticker":"MDCO","issuer_name_source":null,"issuer_url":"/issuer/0001113481","owner_cik":"0001427141","owner_name":"O'Connor William Bernard","owner_display_name":"O'Connor William Bernard","owner_url":"/insider/0001427141","role":"Officer (Chief Financial Officer)","role_mark":"O","role_mark_label":"Officer (Chief Financial Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Financial Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":10833.0,"shares_display":"10,833","price_per_share":45.0,"price_display":"45.00","price_state":"stated","total_value":487485.0,"total_display":"487,485.00","total_whole":"487,485","shares_owned_after":20102.0,"shares_owned_after_display":"20,102","ownership_form":"D","is_10b5_1":null,"transaction_date":"2017-02-03","filed_date":"2017-02-07","scope":"insider"},{"id":2948653,"accession":"0001179110-16-021314","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001179110-16-021314","line_url":"/filing/0001179110-16-021314","is_derivative":false,"issuer_cik":"0001113481","issuer_name":"MEDICINES CO /DE","issuer_ticker":"MDCO","issuer_name_source":null,"issuer_url":"/issuer/0001113481","owner_cik":"0001427141","owner_name":"O'Connor William Bernard","owner_display_name":"O'Connor William Bernard","owner_url":"/insider/0001427141","role":"Officer (Chief Financial Officer)","role_mark":"O","role_mark_label":"Officer (Chief Financial Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Financial Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":8617.0,"shares_display":"8,617","price_per_share":34.39258094464431,"price_display":"34.39","price_state":"stated","total_value":296360.87,"total_display":"296,360.87","total_whole":"296,361","shares_owned_after":19724.0,"shares_owned_after_display":"19,724","ownership_form":"D","is_10b5_1":null,"transaction_date":"2016-03-04","filed_date":"2016-03-08","scope":"insider","n_lines":2},{"id":8931624,"accession":"0001179110-15-012909","txn_seq":4,"anchor":"line-4","filing_url":"/filing/0001179110-15-012909","line_url":"/filing/0001179110-15-012909#line-4","is_derivative":false,"issuer_cik":"0001113481","issuer_name":"MEDICINES CO /DE","issuer_ticker":"MDCO","issuer_name_source":null,"issuer_url":"/issuer/0001113481","owner_cik":"0001427141","owner_name":"O'Connor William Bernard","owner_display_name":"O'Connor William Bernard","owner_url":"/insider/0001427141","role":"Officer (SVP & Chief Acct. Officer)","role_mark":"O","role_mark_label":"Officer (SVP & Chief Acct. Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"SVP & Chief Acct. Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":35451.0,"shares_display":"35,451","price_per_share":40.0,"price_display":"40.00","price_state":"stated","total_value":1418040.0,"total_display":"1,418,040.00","total_whole":"1,418,040","shares_owned_after":24732.0,"shares_owned_after_display":"24,732","ownership_form":"D","is_10b5_1":null,"transaction_date":"2015-08-31","filed_date":"2015-09-02","scope":"insider"},{"id":8234803,"accession":"0001179110-15-006469","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001179110-15-006469","line_url":"/filing/0001179110-15-006469#line-1","is_derivative":false,"issuer_cik":"0001113481","issuer_name":"MEDICINES CO /DE","issuer_ticker":"MDCO","issuer_name_source":null,"issuer_url":"/issuer/0001113481","owner_cik":"0001427141","owner_name":"O'Connor William Bernard","owner_display_name":"O'Connor William Bernard","owner_url":"/insider/0001427141","role":"Officer (SVP & Chief Acct. Officer)","role_mark":"O","role_mark_label":"Officer (SVP & Chief Acct. Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"SVP & Chief Acct. Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":1281.0,"shares_display":"1,281","price_per_share":30.0,"price_display":"30.00","price_state":"stated","total_value":38430.0,"total_display":"38,430.00","total_whole":"38,430","shares_owned_after":24732.0,"shares_owned_after_display":"24,732","ownership_form":"D","is_10b5_1":null,"transaction_date":"2015-04-16","filed_date":"2015-04-20","scope":"insider"},{"id":8207484,"accession":"0001179110-15-004126","txn_seq":3,"anchor":"line-3","filing_url":"/filing/0001179110-15-004126","line_url":"/filing/0001179110-15-004126#line-3","is_derivative":false,"issuer_cik":"0001113481","issuer_name":"MEDICINES CO /DE","issuer_ticker":"MDCO","issuer_name_source":null,"issuer_url":"/issuer/0001113481","owner_cik":"0001427141","owner_name":"O'Connor William Bernard","owner_display_name":"O'Connor William Bernard","owner_url":"/insider/0001427141","role":"Officer (SVP & Chief Acct. Officer)","role_mark":"O","role_mark_label":"Officer (SVP & Chief Acct. Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"SVP & Chief Acct. Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":2988.0,"shares_display":"2,988","price_per_share":28.78,"price_display":"28.78","price_state":"stated","total_value":85994.64,"total_display":"85,994.64","total_whole":"85,995","shares_owned_after":28032.0,"shares_owned_after_display":"28,032","ownership_form":"D","is_10b5_1":null,"transaction_date":"2015-03-02","filed_date":"2015-03-03","scope":"insider"},{"id":6252060,"accession":"0001179110-14-004372","txn_seq":3,"anchor":"line-3","filing_url":"/filing/0001179110-14-004372","line_url":"/filing/0001179110-14-004372#line-3","is_derivative":false,"issuer_cik":"0001113481","issuer_name":"MEDICINES CO /DE","issuer_ticker":"MDCO","issuer_name_source":null,"issuer_url":"/issuer/0001113481","owner_cik":"0001427141","owner_name":"O'Connor William Bernard","owner_display_name":"O'Connor William Bernard","owner_url":"/insider/0001427141","role":"Officer (Sr VP & Chief Acct. Officer)","role_mark":"O","role_mark_label":"Officer (Sr VP & Chief Acct. Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Sr VP & Chief Acct. Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":2968.0,"shares_display":"2,968","price_per_share":30.31,"price_display":"30.31","price_state":"stated","total_value":89960.08,"total_display":"89,960.08","total_whole":"89,960","shares_owned_after":29312.0,"shares_owned_after_display":"29,312","ownership_form":"D","is_10b5_1":null,"transaction_date":"2014-03-03","filed_date":"2014-03-04","scope":"insider"},{"id":6547121,"accession":"0001179110-14-001113","txn_seq":5,"anchor":"line-5","filing_url":"/filing/0001179110-14-001113","line_url":"/filing/0001179110-14-001113#line-5","is_derivative":false,"issuer_cik":"0001113481","issuer_name":"MEDICINES CO /DE","issuer_ticker":"MDCO","issuer_name_source":null,"issuer_url":"/issuer/0001113481","owner_cik":"0001427141","owner_name":"O'Connor William Bernard","owner_display_name":"O'Connor William Bernard","owner_url":"/insider/0001427141","role":"Officer (Sr VP & Chief Acct. Officer)","role_mark":"O","role_mark_label":"Officer (Sr VP & Chief Acct. Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Sr VP & Chief Acct. Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":1250.0,"shares_display":"1,250","price_per_share":40.0,"price_display":"40.00","price_state":"stated","total_value":50000.0,"total_display":"50,000.00","total_whole":"50,000","shares_owned_after":25058.0,"shares_owned_after_display":"25,058","ownership_form":"D","is_10b5_1":null,"transaction_date":"2014-01-15","filed_date":"2014-01-16","scope":"insider"},{"id":6547116,"accession":"0001179110-14-001113","txn_seq":3,"anchor":"line-3","filing_url":"/filing/0001179110-14-001113","line_url":"/filing/0001179110-14-001113#line-3","is_derivative":false,"issuer_cik":"0001113481","issuer_name":"MEDICINES CO /DE","issuer_ticker":"MDCO","issuer_name_source":null,"issuer_url":"/issuer/0001113481","owner_cik":"0001427141","owner_name":"O'Connor William Bernard","owner_display_name":"O'Connor William Bernard","owner_url":"/insider/0001427141","role":"Officer (Sr VP & Chief Acct. Officer)","role_mark":"O","role_mark_label":"Officer (Sr VP & Chief Acct. Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Sr VP & Chief Acct. Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":3177.0,"shares_display":"3,177","price_per_share":38.8101,"price_display":"38.81","price_state":"stated","total_value":123299.6877,"total_display":"123,299.69","total_whole":"123,300","shares_owned_after":25058.0,"shares_owned_after_display":"25,058","ownership_form":"D","is_10b5_1":null,"transaction_date":"2014-01-14","filed_date":"2014-01-16","scope":"insider"},{"id":6638836,"accession":"0001179110-14-000957","txn_seq":8,"anchor":"line-8","filing_url":"/filing/0001179110-14-000957","line_url":"/filing/0001179110-14-000957#line-8","is_derivative":false,"issuer_cik":"0001113481","issuer_name":"MEDICINES CO /DE","issuer_ticker":"MDCO","issuer_name_source":null,"issuer_url":"/issuer/0001113481","owner_cik":"0001427141","owner_name":"O'Connor William Bernard","owner_display_name":"O'Connor William Bernard","owner_url":"/insider/0001427141","role":"Officer (Sr VP & Chief Acct. Officer)","role_mark":"O","role_mark_label":"Officer (Sr VP & Chief Acct. Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Sr VP & Chief Acct. Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":72384.0,"shares_display":"72,384","price_per_share":40.0,"price_display":"40.00","price_state":"stated","total_value":2895360.0,"total_display":"2,895,360.00","total_whole":"2,895,360","shares_owned_after":25058.0,"shares_owned_after_display":"25,058","ownership_form":"D","is_10b5_1":null,"transaction_date":"2014-01-10","filed_date":"2014-01-14","scope":"insider"},{"id":4327097,"accession":"0001179110-13-015758","txn_seq":4,"anchor":"line-4","filing_url":"/filing/0001179110-13-015758","line_url":"/filing/0001179110-13-015758","is_derivative":false,"issuer_cik":"0001113481","issuer_name":"MEDICINES CO /DE","issuer_ticker":"MDCO","issuer_name_source":null,"issuer_url":"/issuer/0001113481","owner_cik":"0001427141","owner_name":"O'Connor William Bernard","owner_display_name":"O'Connor William Bernard","owner_url":"/insider/0001427141","role":"Officer (Sr VP & Chief Acct. Officer)","role_mark":"O","role_mark_label":"Officer (Sr VP & Chief Acct. Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Sr VP & Chief Acct. Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":6354.0,"shares_display":"6,354","price_per_share":35.0,"price_display":"35.00","price_state":"stated","total_value":222390.0,"total_display":"222,390.00","total_whole":"222,390","shares_owned_after":25058.0,"shares_owned_after_display":"25,058","ownership_form":"D","is_10b5_1":null,"transaction_date":"2013-10-23","filed_date":"2013-10-25","scope":"insider","n_lines":2},{"id":4277233,"accession":"0001179110-13-008331","txn_seq":4,"anchor":"line-4","filing_url":"/filing/0001179110-13-008331","line_url":"/filing/0001179110-13-008331","is_derivative":false,"issuer_cik":"0001113481","issuer_name":"MEDICINES CO /DE","issuer_ticker":"MDCO","issuer_name_source":null,"issuer_url":"/issuer/0001113481","owner_cik":"0001427141","owner_name":"O'Connor William Bernard","owner_display_name":"O'Connor William Bernard","owner_url":"/insider/0001427141","role":"Officer (Sr VP & Chief Acct. Officer)","role_mark":"O","role_mark_label":"Officer (Sr VP & Chief Acct. Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Sr VP & Chief Acct. Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":29654.0,"shares_display":"29,654","price_per_share":35.0,"price_display":"35.00","price_state":"stated","total_value":1037890.0,"total_display":"1,037,890.00","total_whole":"1,037,890","shares_owned_after":25058.0,"shares_owned_after_display":"25,058","ownership_form":"D","is_10b5_1":null,"transaction_date":"2013-05-09","filed_date":"2013-05-13","scope":"insider","n_lines":2},{"id":5352333,"accession":"0001179110-13-003811","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001179110-13-003811","line_url":"/filing/0001179110-13-003811#line-1","is_derivative":false,"issuer_cik":"0001113481","issuer_name":"MEDICINES CO /DE","issuer_ticker":"MDCO","issuer_name_source":null,"issuer_url":"/issuer/0001113481","owner_cik":"0001427141","owner_name":"O'Connor William Bernard","owner_display_name":"O'Connor William Bernard","owner_url":"/insider/0001427141","role":"Officer (Sr VP & Chief Acct. Officer)","role_mark":"O","role_mark_label":"Officer (Sr VP & Chief Acct. Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Sr VP & Chief Acct. Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":4872.0,"shares_display":"4,872","price_per_share":31.09,"price_display":"31.09","price_state":"stated","total_value":151470.48,"total_display":"151,470.48","total_whole":"151,470","shares_owned_after":14166.0,"shares_owned_after_display":"14,166","ownership_form":"D","is_10b5_1":null,"transaction_date":"2013-02-27","filed_date":"2013-03-01","scope":"insider"},{"id":5061757,"accession":"0001179110-13-003533","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001179110-13-003533","line_url":"/filing/0001179110-13-003533#line-1","is_derivative":false,"issuer_cik":"0001113481","issuer_name":"MEDICINES CO /DE","issuer_ticker":"MDCO","issuer_name_source":null,"issuer_url":"/issuer/0001113481","owner_cik":"0001427141","owner_name":"O'Connor William Bernard","owner_display_name":"O'Connor William Bernard","owner_url":"/insider/0001427141","role":"Officer (Sr VP & Chief Acct. Officer)","role_mark":"O","role_mark_label":"Officer (Sr VP & Chief Acct. Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Sr VP & Chief Acct. Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":1182.0,"shares_display":"1,182","price_per_share":31.17,"price_display":"31.17","price_state":"stated","total_value":36842.94,"total_display":"36,842.94","total_whole":"36,843","shares_owned_after":19038.0,"shares_owned_after_display":"19,038","ownership_form":"D","is_10b5_1":null,"transaction_date":"2013-02-25","filed_date":"2013-02-26","scope":"insider"},{"id":4905564,"accession":"0001179110-13-003341","txn_seq":5,"anchor":"line-5","filing_url":"/filing/0001179110-13-003341","line_url":"/filing/0001179110-13-003341","is_derivative":false,"issuer_cik":"0001113481","issuer_name":"MEDICINES CO /DE","issuer_ticker":"MDCO","issuer_name_source":null,"issuer_url":"/issuer/0001113481","owner_cik":"0001427141","owner_name":"O'Connor William Bernard","owner_display_name":"O'Connor William Bernard","owner_url":"/insider/0001427141","role":"Officer (Sr VP & Chief Acct. Officer)","role_mark":"O","role_mark_label":"Officer (Sr VP & Chief Acct. Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Sr VP & Chief Acct. Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":5296.0,"shares_display":"5,296","price_per_share":32.9,"price_display":"32.90","price_state":"stated","total_value":174238.4,"total_display":"174,238.40","total_whole":"174,238","shares_owned_after":20220.0,"shares_owned_after_display":"20,220","ownership_form":"D","is_10b5_1":null,"transaction_date":"2013-02-21","filed_date":"2013-02-22","scope":"insider","n_lines":2},{"id":4905549,"accession":"0001179110-13-003341","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001179110-13-003341","line_url":"/filing/0001179110-13-003341#line-1","is_derivative":false,"issuer_cik":"0001113481","issuer_name":"MEDICINES CO /DE","issuer_ticker":"MDCO","issuer_name_source":null,"issuer_url":"/issuer/0001113481","owner_cik":"0001427141","owner_name":"O'Connor William Bernard","owner_display_name":"O'Connor William Bernard","owner_url":"/insider/0001427141","role":"Officer (Sr VP & Chief Acct. Officer)","role_mark":"O","role_mark_label":"Officer (Sr VP & Chief Acct. Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Sr VP & Chief Acct. Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":570.0,"shares_display":"570","price_per_share":32.42,"price_display":"32.42","price_state":"stated","total_value":18479.4,"total_display":"18,479.40","total_whole":"18,479","shares_owned_after":20220.0,"shares_owned_after_display":"20,220","ownership_form":"D","is_10b5_1":null,"transaction_date":"2013-02-20","filed_date":"2013-02-22","scope":"insider"},{"id":5061689,"accession":"0001179110-13-003268","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001179110-13-003268","line_url":"/filing/0001179110-13-003268#line-1","is_derivative":false,"issuer_cik":"0001113481","issuer_name":"MEDICINES CO /DE","issuer_ticker":"MDCO","issuer_name_source":null,"issuer_url":"/issuer/0001113481","owner_cik":"0001427141","owner_name":"O'Connor William Bernard","owner_display_name":"O'Connor William Bernard","owner_url":"/insider/0001427141","role":"Officer (Sr VP & Chief Acct. Officer)","role_mark":"O","role_mark_label":"Officer (Sr VP & Chief Acct. Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Sr VP & Chief Acct. Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":1143.0,"shares_display":"1,143","price_per_share":31.8,"price_display":"31.80","price_state":"stated","total_value":36347.4,"total_display":"36,347.40","total_whole":"36,347","shares_owned_after":20790.0,"shares_owned_after_display":"20,790","ownership_form":"D","is_10b5_1":null,"transaction_date":"2013-02-19","filed_date":"2013-02-21","scope":"insider"},{"id":5550203,"accession":"0001179110-13-001018","txn_seq":6,"anchor":"line-6","filing_url":"/filing/0001179110-13-001018","line_url":"/filing/0001179110-13-001018","is_derivative":false,"issuer_cik":"0001113481","issuer_name":"MEDICINES CO /DE","issuer_ticker":"MDCO","issuer_name_source":null,"issuer_url":"/issuer/0001113481","owner_cik":"0001427141","owner_name":"O'Connor William Bernard","owner_display_name":"O'Connor William Bernard","owner_url":"/insider/0001427141","role":"Officer (Chief Accounting Officer)","role_mark":"O","role_mark_label":"Officer (Chief Accounting Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Accounting Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":49496.0,"shares_display":"49,496","price_per_share":30.0,"price_display":"30.00","price_state":"stated","total_value":1484880.0,"total_display":"1,484,880.00","total_whole":"1,484,880","shares_owned_after":21933.0,"shares_owned_after_display":"21,933","ownership_form":"D","is_10b5_1":null,"transaction_date":"2013-01-16","filed_date":"2013-01-17","scope":"insider","n_lines":3},{"id":3292507,"accession":"0001179110-12-005098","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001179110-12-005098","line_url":"/filing/0001179110-12-005098#line-1","is_derivative":false,"issuer_cik":"0001113481","issuer_name":"MEDICINES CO /DE","issuer_ticker":"MDCO","issuer_name_source":null,"issuer_url":"/issuer/0001113481","owner_cik":"0001427141","owner_name":"O'Connor William Bernard","owner_display_name":"O'Connor William Bernard","owner_url":"/insider/0001427141","role":"Officer (Chief Accounting Officer)","role_mark":"O","role_mark_label":"Officer (Chief Accounting Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Accounting Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":1040.0,"shares_display":"1,040","price_per_share":21.08,"price_display":"21.08","price_state":"stated","total_value":21923.2,"total_display":"21,923.20","total_whole":"21,923","shares_owned_after":21933.0,"shares_owned_after_display":"21,933","ownership_form":"D","is_10b5_1":null,"transaction_date":"2012-03-14","filed_date":"2012-03-15","scope":"insider"},{"id":2417879,"accession":"0001179110-12-003559","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001179110-12-003559","line_url":"/filing/0001179110-12-003559#line-1","is_derivative":false,"issuer_cik":"0001113481","issuer_name":"MEDICINES CO /DE","issuer_ticker":"MDCO","issuer_name_source":null,"issuer_url":"/issuer/0001113481","owner_cik":"0001427141","owner_name":"O'Connor William Bernard","owner_display_name":"O'Connor William Bernard","owner_url":"/insider/0001427141","role":"Officer (Chief Accounting Officer)","role_mark":"O","role_mark_label":"Officer (Chief Accounting Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Accounting Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":1908.0,"shares_display":"1,908","price_per_share":22.22,"price_display":"22.22","price_state":"stated","total_value":42395.76,"total_display":"42,395.76","total_whole":"42,396","shares_owned_after":10473.0,"shares_owned_after_display":"10,473","ownership_form":"D","is_10b5_1":null,"transaction_date":"2012-02-23","filed_date":"2012-02-27","scope":"insider"},{"id":2296705,"accession":"0001179110-12-003337","txn_seq":3,"anchor":"line-3","filing_url":"/filing/0001179110-12-003337","line_url":"/filing/0001179110-12-003337","is_derivative":false,"issuer_cik":"0001113481","issuer_name":"MEDICINES CO /DE","issuer_ticker":"MDCO","issuer_name_source":null,"issuer_url":"/issuer/0001113481","owner_cik":"0001427141","owner_name":"O'Connor William Bernard","owner_display_name":"O'Connor William Bernard","owner_url":"/insider/0001427141","role":"Officer (Chief Accounting Officer)","role_mark":"O","role_mark_label":"Officer (Chief Accounting Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Accounting Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":1694.0,"shares_display":"1,694","price_per_share":20.94,"price_display":"20.94","price_state":"stated","total_value":35472.36,"total_display":"35,472.36","total_whole":"35,472","shares_owned_after":13448.0,"shares_owned_after_display":"13,448","ownership_form":"D","is_10b5_1":null,"transaction_date":"2012-02-21","filed_date":"2012-02-23","scope":"insider","n_lines":3},{"id":8819808,"accession":"0001179110-11-016983","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001179110-11-016983","line_url":"/filing/0001179110-11-016983#line-1","is_derivative":false,"issuer_cik":"0001113481","issuer_name":"MEDICINES CO /DE","issuer_ticker":"MDCO","issuer_name_source":null,"issuer_url":"/issuer/0001113481","owner_cik":"0001427141","owner_name":"O'Connor William Bernard","owner_display_name":"O'Connor William Bernard","owner_url":"/insider/0001427141","role":"Officer (Chief Accounting Officer)","role_mark":"O","role_mark_label":"Officer (Chief Accounting Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Accounting Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":2881.0,"shares_display":"2,881","price_per_share":20.0,"price_display":"20.00","price_state":"stated","total_value":57620.0,"total_display":"57,620.00","total_whole":"57,620","shares_owned_after":14075.0,"shares_owned_after_display":"14,075","ownership_form":"D","is_10b5_1":null,"transaction_date":"2011-12-20","filed_date":"2011-12-21","scope":"insider"},{"id":9045982,"accession":"0001209191-11-012104","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001209191-11-012104","line_url":"/filing/0001209191-11-012104#line-2","is_derivative":false,"issuer_cik":"0001113481","issuer_name":"MEDICINES CO /DE","issuer_ticker":"MDCO","issuer_name_source":null,"issuer_url":"/issuer/0001113481","owner_cik":"0001427141","owner_name":"O'Connor William Bernard","owner_display_name":"O'Connor William Bernard","owner_url":"/insider/0001427141","role":"Officer (Chief Accounting Officer)","role_mark":"O","role_mark_label":"Officer (Chief Accounting Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Accounting Officer","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":17.28,"price_display":"17.28","price_state":"stated","total_value":18506.88,"total_display":"18,506.88","total_whole":"18,507","shares_owned_after":16956.0,"shares_owned_after_display":"16,956","ownership_form":"D","is_10b5_1":null,"transaction_date":"2011-02-22","filed_date":"2011-02-23","scope":"insider"},{"id":9267053,"accession":"0001209191-10-013451","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001209191-10-013451","line_url":"/filing/0001209191-10-013451#line-1","is_derivative":false,"issuer_cik":"0001113481","issuer_name":"MEDICINES CO /DE","issuer_ticker":"MDCO","issuer_name_source":null,"issuer_url":"/issuer/0001113481","owner_cik":"0001427141","owner_name":"O'Connor William Bernard","owner_display_name":"O'Connor William Bernard","owner_url":"/insider/0001427141","role":"Officer (Chief Accounting Officer)","role_mark":"O","role_mark_label":"Officer (Chief Accounting Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Accounting Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":543.0,"shares_display":"543","price_per_share":7.4038,"price_display":"7.40","price_state":"stated","total_value":4020.2634,"total_display":"4,020.26","total_whole":"4,020","shares_owned_after":11360.0,"shares_owned_after_display":"11,360","ownership_form":"D","is_10b5_1":null,"transaction_date":"2010-02-22","filed_date":"2010-03-02","scope":"insider"}],"collapsed":true,"next_cursor":null,"ledger_fault":false,"count":{"value":37,"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":37,"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":37},"affiliations":[{"type":"issuer","type_label":"ISSUER","cik":"0001113481","name":"MEDICINES CO /DE","url":"/issuer/0001113481","role":"Officer (Chief Financial Officer)","n_filings":22,"first_seen":"2010-03-02","last_seen":"2017-02-14"}],"order_statement":"Newest transaction date first, id breaking the tie.","canonical_url":"https://ebomi.com/insider/0001427141","retrieved_at":"2026-08-26T09:24:53+00:00","coverage":{"filings":1506293,"transactions":4290787,"issuers":28597,"insiders":152303,"first_filed_date":"2003-06-30","last_filed_date":"2026-08-25","last_ingest":"2026-08-26T05:24:25.741053+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"}}