{"entity":{"type":"insider","cik":"0001727936","url":"/insider/0001727936","json_url":"/insider/0001727936.json","name":"Lipson Matthew A.","name_source":"as-filed","also_issuer":false,"cross_url":null},"coverage_statement":{"n_transactions":51,"n_filings":7,"first":"2018-01-18","last":"2020-10-05","span_basis":"filed_date"},"name_variants":[{"name":"Lipson Matthew A.","source":"filing","n_filings":7,"first_seen":"2018-01-18","last_seen":"2020-10-05"}],"transactions":[{"id":3323467,"accession":"0001082923-20-000134","txn_seq":7,"anchor":"line-7","filing_url":"/filing/0001082923-20-000134","line_url":"/filing/0001082923-20-000134","is_derivative":false,"issuer_cik":"0001082923","issuer_name":"STAMPS.COM INC","issuer_ticker":"STMP","issuer_name_source":null,"issuer_url":"/issuer/0001082923","owner_cik":"0001727936","owner_name":"Lipson Matthew A.","owner_display_name":"Lipson Matthew A.","owner_url":"/insider/0001727936","role":"Officer (Chief Legal Officer/ Secretary)","role_mark":"O","role_mark_label":"Officer (Chief Legal Officer/ Secretary)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Legal Officer/ Secretary","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":51784.0,"shares_display":"51,784","price_per_share":252.44992185617178,"price_display":"252.45","price_state":"stated","total_value":13072866.7534,"total_display":"13,072,866.75","total_whole":"13,072,867","shares_owned_after":14726.0,"shares_owned_after_display":"14,726","ownership_form":"D","is_10b5_1":null,"transaction_date":"2020-10-01","filed_date":"2020-10-05","scope":"insider","n_lines":6},{"id":2104497,"accession":"0001082923-20-000127","txn_seq":19,"anchor":"line-19","filing_url":"/filing/0001082923-20-000127","line_url":"/filing/0001082923-20-000127","is_derivative":false,"issuer_cik":"0001082923","issuer_name":"STAMPS.COM INC","issuer_ticker":"STMP","issuer_name_source":null,"issuer_url":"/issuer/0001082923","owner_cik":"0001727936","owner_name":"Lipson Matthew A.","owner_display_name":"Lipson Matthew A.","owner_url":"/insider/0001727936","role":"Officer (Chief Legal Officer/ Secretary)","role_mark":"O","role_mark_label":"Officer (Chief Legal Officer/ Secretary)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Legal Officer/ Secretary","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":15287.0,"shares_display":"15,287","price_per_share":218.475543010401,"price_display":"218.48","price_state":"stated","total_value":3339835.626,"total_display":"3,339,835.63","total_whole":"3,339,836","shares_owned_after":13670.0,"shares_owned_after_display":"13,670","ownership_form":"D","is_10b5_1":null,"transaction_date":"2020-09-16","filed_date":"2020-09-17","scope":"insider","n_lines":12},{"id":2104415,"accession":"0001082923-20-000127","txn_seq":6,"anchor":"line-6","filing_url":"/filing/0001082923-20-000127","line_url":"/filing/0001082923-20-000127","is_derivative":false,"issuer_cik":"0001082923","issuer_name":"STAMPS.COM INC","issuer_ticker":"STMP","issuer_name_source":null,"issuer_url":"/issuer/0001082923","owner_cik":"0001727936","owner_name":"Lipson Matthew A.","owner_display_name":"Lipson Matthew A.","owner_url":"/insider/0001727936","role":"Officer (Chief Legal Officer/ Secretary)","role_mark":"O","role_mark_label":"Officer (Chief Legal Officer/ Secretary)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Legal Officer/ Secretary","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":9713.0,"shares_display":"9,713","price_per_share":216.01073620920417,"price_display":"216.01","price_state":"stated","total_value":2098112.2808,"total_display":"2,098,112.28","total_whole":"2,098,112","shares_owned_after":4861.0,"shares_owned_after_display":"4,861","ownership_form":"D","is_10b5_1":null,"transaction_date":"2020-09-15","filed_date":"2020-09-17","scope":"insider","n_lines":5},{"id":6901046,"accession":"0001082923-18-000047","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001082923-18-000047","line_url":"/filing/0001082923-18-000047#line-1","is_derivative":false,"issuer_cik":"0001082923","issuer_name":"STAMPS.COM INC","issuer_ticker":"STMP","issuer_name_source":null,"issuer_url":"/issuer/0001082923","owner_cik":"0001727936","owner_name":"Lipson Matthew A.","owner_display_name":"Lipson Matthew A.","owner_url":"/insider/0001727936","role":"Officer (Chief Legal Officer/ Secretary)","role_mark":"O","role_mark_label":"Officer (Chief Legal Officer/ Secretary)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Legal Officer/ Secretary","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":243.8,"price_display":"243.80","price_state":"stated","total_value":312307.8,"total_display":"312,307.80","total_whole":"312,308","shares_owned_after":650.0,"shares_owned_after_display":"650","ownership_form":"D","is_10b5_1":null,"transaction_date":"2018-05-15","filed_date":"2018-05-17","scope":"insider"},{"id":6352072,"accession":"0001082923-18-000029","txn_seq":9,"anchor":"line-9","filing_url":"/filing/0001082923-18-000029","line_url":"/filing/0001082923-18-000029","is_derivative":false,"issuer_cik":"0001082923","issuer_name":"STAMPS.COM INC","issuer_ticker":"STMP","issuer_name_source":null,"issuer_url":"/issuer/0001082923","owner_cik":"0001727936","owner_name":"Lipson Matthew A.","owner_display_name":"Lipson Matthew A.","owner_url":"/insider/0001727936","role":"Officer (Chief Legal Officer/ Secretary)","role_mark":"O","role_mark_label":"Officer (Chief Legal Officer/ Secretary)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Legal Officer/ Secretary","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":9174.0,"shares_display":"9,174","price_per_share":204.4322967625899,"price_display":"204.43","price_state":"stated","total_value":1875461.8905,"total_display":"1,875,461.89","total_whole":"1,875,462","shares_owned_after":7048.0,"shares_owned_after_display":"7,048","ownership_form":"D","is_10b5_1":null,"transaction_date":"2018-04-16","filed_date":"2018-04-18","scope":"insider","n_lines":7},{"id":6516654,"accession":"0001082923-18-000019","txn_seq":6,"anchor":"line-6","filing_url":"/filing/0001082923-18-000019","line_url":"/filing/0001082923-18-000019","is_derivative":false,"issuer_cik":"0001082923","issuer_name":"STAMPS.COM INC","issuer_ticker":"STMP","issuer_name_source":null,"issuer_url":"/issuer/0001082923","owner_cik":"0001727936","owner_name":"Lipson Matthew A.","owner_display_name":"Lipson Matthew A.","owner_url":"/insider/0001727936","role":"Officer (Chief Legal Officer/ Secretary)","role_mark":"O","role_mark_label":"Officer (Chief Legal Officer/ Secretary)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Legal Officer/ Secretary","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":10000.0,"shares_display":"10,000","price_per_share":199.34194698,"price_display":"199.34","price_state":"stated","total_value":1993419.4698,"total_display":"1,993,419.47","total_whole":"1,993,419","shares_owned_after":8497.0,"shares_owned_after_display":"8,497","ownership_form":"D","is_10b5_1":null,"transaction_date":"2018-03-15","filed_date":"2018-03-19","scope":"insider","n_lines":5},{"id":6758122,"accession":"0001209191-18-011469","txn_seq":7,"anchor":"line-7","filing_url":"/filing/0001209191-18-011469","line_url":"/filing/0001209191-18-011469","is_derivative":false,"issuer_cik":"0001082923","issuer_name":"STAMPS.COM INC","issuer_ticker":"STMP","issuer_name_source":null,"issuer_url":"/issuer/0001082923","owner_cik":"0001727936","owner_name":"Lipson Matthew A.","owner_display_name":"Lipson Matthew A.","owner_url":"/insider/0001727936","role":"Officer (Chief Legal Officer/ Secretary)","role_mark":"O","role_mark_label":"Officer (Chief Legal Officer/ Secretary)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Legal Officer/ Secretary","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":10000.0,"shares_display":"10,000","price_per_share":187.37349925,"price_display":"187.37","price_state":"stated","total_value":1873734.9925,"total_display":"1,873,734.99","total_whole":"1,873,735","shares_owned_after":4566.0,"shares_owned_after_display":"4,566","ownership_form":"D","is_10b5_1":null,"transaction_date":"2018-02-15","filed_date":"2018-02-20","scope":"insider","n_lines":6},{"id":6447753,"accession":"0001209191-18-004313","txn_seq":10,"anchor":"line-10","filing_url":"/filing/0001209191-18-004313","line_url":"/filing/0001209191-18-004313#line-10","is_derivative":false,"issuer_cik":"0001082923","issuer_name":"STAMPS.COM INC","issuer_ticker":"STMP","issuer_name_source":null,"issuer_url":"/issuer/0001082923","owner_cik":"0001727936","owner_name":"Lipson Matthew A.","owner_display_name":"Lipson Matthew A.","owner_url":"/insider/0001727936","role":"Officer (Chief Legal Officer/ Secretary)","role_mark":"O","role_mark_label":"Officer (Chief Legal Officer/ Secretary)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Legal Officer/ Secretary","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":2435.0,"shares_display":"2,435","price_per_share":190.2413,"price_display":"190.24","price_state":"stated","total_value":463237.5655,"total_display":"463,237.57","total_whole":"463,238","shares_owned_after":4831.0,"shares_owned_after_display":"4,831","ownership_form":"D","is_10b5_1":null,"transaction_date":"2018-01-16","filed_date":"2018-01-18","scope":"insider"},{"id":6447751,"accession":"0001209191-18-004313","txn_seq":9,"anchor":"line-9","filing_url":"/filing/0001209191-18-004313","line_url":"/filing/0001209191-18-004313#line-9","is_derivative":false,"issuer_cik":"0001082923","issuer_name":"STAMPS.COM INC","issuer_ticker":"STMP","issuer_name_source":null,"issuer_url":"/issuer/0001082923","owner_cik":"0001727936","owner_name":"Lipson Matthew A.","owner_display_name":"Lipson Matthew A.","owner_url":"/insider/0001727936","role":"Officer (Chief Legal Officer/ Secretary)","role_mark":"O","role_mark_label":"Officer (Chief Legal Officer/ Secretary)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Legal Officer/ Secretary","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":2302.0,"shares_display":"2,302","price_per_share":187.9804,"price_display":"187.98","price_state":"stated","total_value":432730.8808,"total_display":"432,730.88","total_whole":"432,731","shares_owned_after":8625.0,"shares_owned_after_display":"8,625","ownership_form":"D","is_10b5_1":null,"transaction_date":"2018-01-16","filed_date":"2018-01-18","scope":"insider"},{"id":6447748,"accession":"0001209191-18-004313","txn_seq":8,"anchor":"line-8","filing_url":"/filing/0001209191-18-004313","line_url":"/filing/0001209191-18-004313#line-8","is_derivative":false,"issuer_cik":"0001082923","issuer_name":"STAMPS.COM INC","issuer_ticker":"STMP","issuer_name_source":null,"issuer_url":"/issuer/0001082923","owner_cik":"0001727936","owner_name":"Lipson Matthew A.","owner_display_name":"Lipson Matthew A.","owner_url":"/insider/0001727936","role":"Officer (Chief Legal Officer/ Secretary)","role_mark":"O","role_mark_label":"Officer (Chief Legal Officer/ Secretary)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Legal Officer/ Secretary","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":2130.0,"shares_display":"2,130","price_per_share":187.13,"price_display":"187.13","price_state":"stated","total_value":398586.9,"total_display":"398,586.90","total_whole":"398,587","shares_owned_after":10927.0,"shares_owned_after_display":"10,927","ownership_form":"D","is_10b5_1":null,"transaction_date":"2018-01-16","filed_date":"2018-01-18","scope":"insider"},{"id":6447745,"accession":"0001209191-18-004313","txn_seq":7,"anchor":"line-7","filing_url":"/filing/0001209191-18-004313","line_url":"/filing/0001209191-18-004313#line-7","is_derivative":false,"issuer_cik":"0001082923","issuer_name":"STAMPS.COM INC","issuer_ticker":"STMP","issuer_name_source":null,"issuer_url":"/issuer/0001082923","owner_cik":"0001727936","owner_name":"Lipson Matthew A.","owner_display_name":"Lipson Matthew A.","owner_url":"/insider/0001727936","role":"Officer (Chief Legal Officer/ Secretary)","role_mark":"O","role_mark_label":"Officer (Chief Legal Officer/ Secretary)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Legal Officer/ Secretary","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":1359.0,"shares_display":"1,359","price_per_share":189.1107,"price_display":"189.11","price_state":"stated","total_value":257001.4413,"total_display":"257,001.44","total_whole":"257,001","shares_owned_after":7266.0,"shares_owned_after_display":"7,266","ownership_form":"D","is_10b5_1":null,"transaction_date":"2018-01-16","filed_date":"2018-01-18","scope":"insider"},{"id":6447742,"accession":"0001209191-18-004313","txn_seq":6,"anchor":"line-6","filing_url":"/filing/0001209191-18-004313","line_url":"/filing/0001209191-18-004313#line-6","is_derivative":false,"issuer_cik":"0001082923","issuer_name":"STAMPS.COM INC","issuer_ticker":"STMP","issuer_name_source":null,"issuer_url":"/issuer/0001082923","owner_cik":"0001727936","owner_name":"Lipson Matthew A.","owner_display_name":"Lipson Matthew A.","owner_url":"/insider/0001727936","role":"Officer (Chief Legal Officer/ Secretary)","role_mark":"O","role_mark_label":"Officer (Chief Legal Officer/ Secretary)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Legal Officer/ Secretary","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":1000.0,"shares_display":"1,000","price_per_share":192.515,"price_display":"192.52","price_state":"stated","total_value":192515.0,"total_display":"192,515.00","total_whole":"192,515","shares_owned_after":2831.0,"shares_owned_after_display":"2,831","ownership_form":"D","is_10b5_1":null,"transaction_date":"2018-01-16","filed_date":"2018-01-18","scope":"insider"},{"id":6447738,"accession":"0001209191-18-004313","txn_seq":5,"anchor":"line-5","filing_url":"/filing/0001209191-18-004313","line_url":"/filing/0001209191-18-004313#line-5","is_derivative":false,"issuer_cik":"0001082923","issuer_name":"STAMPS.COM INC","issuer_ticker":"STMP","issuer_name_source":null,"issuer_url":"/issuer/0001082923","owner_cik":"0001727936","owner_name":"Lipson Matthew A.","owner_display_name":"Lipson Matthew A.","owner_url":"/insider/0001727936","role":"Officer (Chief Legal Officer/ Secretary)","role_mark":"O","role_mark_label":"Officer (Chief Legal Officer/ Secretary)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Legal Officer/ Secretary","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":1000.0,"shares_display":"1,000","price_per_share":191.185,"price_display":"191.18","price_state":"stated","total_value":191185.0,"total_display":"191,185.00","total_whole":"191,185","shares_owned_after":3831.0,"shares_owned_after_display":"3,831","ownership_form":"D","is_10b5_1":null,"transaction_date":"2018-01-16","filed_date":"2018-01-18","scope":"insider"},{"id":6447736,"accession":"0001209191-18-004313","txn_seq":4,"anchor":"line-4","filing_url":"/filing/0001209191-18-004313","line_url":"/filing/0001209191-18-004313#line-4","is_derivative":false,"issuer_cik":"0001082923","issuer_name":"STAMPS.COM INC","issuer_ticker":"STMP","issuer_name_source":null,"issuer_url":"/issuer/0001082923","owner_cik":"0001727936","owner_name":"Lipson Matthew A.","owner_display_name":"Lipson Matthew A.","owner_url":"/insider/0001727936","role":"Officer (Chief Legal Officer/ Secretary)","role_mark":"O","role_mark_label":"Officer (Chief Legal Officer/ Secretary)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Legal Officer/ Secretary","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":700.0,"shares_display":"700","price_per_share":185.7,"price_display":"185.70","price_state":"stated","total_value":129990.0,"total_display":"129,990.00","total_whole":"129,990","shares_owned_after":13057.0,"shares_owned_after_display":"13,057","ownership_form":"D","is_10b5_1":null,"transaction_date":"2018-01-16","filed_date":"2018-01-18","scope":"insider"},{"id":6447734,"accession":"0001209191-18-004313","txn_seq":3,"anchor":"line-3","filing_url":"/filing/0001209191-18-004313","line_url":"/filing/0001209191-18-004313#line-3","is_derivative":false,"issuer_cik":"0001082923","issuer_name":"STAMPS.COM INC","issuer_ticker":"STMP","issuer_name_source":null,"issuer_url":"/issuer/0001082923","owner_cik":"0001727936","owner_name":"Lipson Matthew A.","owner_display_name":"Lipson Matthew A.","owner_url":"/insider/0001727936","role":"Officer (Chief Legal Officer/ Secretary)","role_mark":"O","role_mark_label":"Officer (Chief Legal Officer/ Secretary)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Legal Officer/ Secretary","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":500.0,"shares_display":"500","price_per_share":194.76,"price_display":"194.76","price_state":"stated","total_value":97380.0,"total_display":"97,380.00","total_whole":"97,380","shares_owned_after":1931.0,"shares_owned_after_display":"1,931","ownership_form":"D","is_10b5_1":null,"transaction_date":"2018-01-16","filed_date":"2018-01-18","scope":"insider"}],"collapsed":true,"next_cursor":"2018-01-16|6447734","ledger_fault":false,"count":{"value":51,"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":51,"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":51},"affiliations":[{"type":"issuer","type_label":"ISSUER","cik":"0001082923","name":"STAMPS.COM INC","url":"/issuer/0001082923","role":"Officer (Chief Legal Officer/ Secretary)","n_filings":7,"first_seen":"2018-01-18","last_seen":"2020-10-05"}],"order_statement":"Newest transaction date first, id breaking the tie.","canonical_url":"https://ebomi.com/insider/0001727936","retrieved_at":"2026-08-26T13:07:14+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"}}