{"entity":{"type":"insider","cik":"0001254801","url":"/insider/0001254801","json_url":"/insider/0001254801.json","name":"WEISBERG SETH","name_source":"as-filed","also_issuer":false,"cross_url":null},"coverage_statement":{"n_transactions":113,"n_filings":53,"first":"2005-03-16","last":"2017-08-07","span_basis":"filed_date"},"name_variants":[{"name":"WEISBERG SETH","source":"filing","n_filings":53,"first_seen":"2005-03-16","last_seen":"2017-08-07"}],"transactions":[{"id":9270394,"accession":"0001209191-17-048006","txn_seq":8,"anchor":"line-8","filing_url":"/filing/0001209191-17-048006","line_url":"/filing/0001209191-17-048006","is_derivative":false,"issuer_cik":"0001082923","issuer_name":"STAMPS.COM INC","issuer_ticker":"STMP","issuer_name_source":null,"issuer_url":"/issuer/0001082923","owner_cik":"0001254801","owner_name":"WEISBERG SETH","owner_display_name":"WEISBERG SETH","owner_url":"/insider/0001254801","role":"Officer (Chief Legal Officer), Other","role_mark":"O","role_mark_label":"Officer (Chief Legal Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Legal Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":25000.0,"shares_display":"25,000","price_per_share":197.448237468,"price_display":"197.45","price_state":"stated","total_value":4936205.9367,"total_display":"4,936,205.94","total_whole":"4,936,206","shares_owned_after":43022.0,"shares_owned_after_display":"43,022","ownership_form":"D","is_10b5_1":null,"transaction_date":"2017-08-03","filed_date":"2017-08-07","scope":"insider","n_lines":19},{"id":4084268,"accession":"0001209191-17-047794","txn_seq":21,"anchor":"line-21","filing_url":"/filing/0001209191-17-047794","line_url":"/filing/0001209191-17-047794","is_derivative":false,"issuer_cik":"0001082923","issuer_name":"STAMPS.COM INC","issuer_ticker":"STMP","issuer_name_source":null,"issuer_url":"/issuer/0001082923","owner_cik":"0001254801","owner_name":"WEISBERG SETH","owner_display_name":"WEISBERG SETH","owner_url":"/insider/0001254801","role":"Officer (Chief Legal Officer), Other","role_mark":"O","role_mark_label":"Officer (Chief Legal Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Legal Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":25000.0,"shares_display":"25,000","price_per_share":197.448237468,"price_display":"197.45","price_state":"stated","total_value":4936205.9367,"total_display":"4,936,205.94","total_whole":"4,936,206","shares_owned_after":26700.0,"shares_owned_after_display":"26,700","ownership_form":"D","is_10b5_1":null,"transaction_date":"2017-08-03","filed_date":"2017-08-04","scope":"insider","n_lines":19},{"id":5209118,"accession":"0001209191-17-041152","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001209191-17-041152","line_url":"/filing/0001209191-17-041152#line-2","is_derivative":false,"issuer_cik":"0001082923","issuer_name":"STAMPS.COM INC","issuer_ticker":"STMP","issuer_name_source":null,"issuer_url":"/issuer/0001082923","owner_cik":"0001254801","owner_name":"WEISBERG SETH","owner_display_name":"WEISBERG SETH","owner_url":"/insider/0001254801","role":"Officer (Chief Legal Officer), Other","role_mark":"O","role_mark_label":"Officer (Chief Legal Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Legal Officer","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":150.1483,"price_display":"150.15","price_state":"stated","total_value":750741.5,"total_display":"750,741.50","total_whole":"750,742","shares_owned_after":22572.0,"shares_owned_after_display":"22,572","ownership_form":"D","is_10b5_1":null,"transaction_date":"2017-06-19","filed_date":"2017-06-20","scope":"insider"},{"id":5351618,"accession":"0001209191-17-036003","txn_seq":5,"anchor":"line-5","filing_url":"/filing/0001209191-17-036003","line_url":"/filing/0001209191-17-036003","is_derivative":false,"issuer_cik":"0001082923","issuer_name":"STAMPS.COM INC","issuer_ticker":"STMP","issuer_name_source":null,"issuer_url":"/issuer/0001082923","owner_cik":"0001254801","owner_name":"WEISBERG SETH","owner_display_name":"WEISBERG SETH","owner_url":"/insider/0001254801","role":"Officer (Chief Legal Officer), Other","role_mark":"O","role_mark_label":"Officer (Chief Legal Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Legal Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":4500.0,"shares_display":"4,500","price_per_share":140.38243024444444,"price_display":"140.38","price_state":"stated","total_value":631720.9361,"total_display":"631,720.94","total_whole":"631,721","shares_owned_after":22853.0,"shares_owned_after_display":"22,853","ownership_form":"D","is_10b5_1":null,"transaction_date":"2017-05-26","filed_date":"2017-05-26","scope":"insider","n_lines":2},{"id":5351607,"accession":"0001209191-17-036003","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001209191-17-036003","line_url":"/filing/0001209191-17-036003#line-2","is_derivative":false,"issuer_cik":"0001082923","issuer_name":"STAMPS.COM INC","issuer_ticker":"STMP","issuer_name_source":null,"issuer_url":"/issuer/0001082923","owner_cik":"0001254801","owner_name":"WEISBERG SETH","owner_display_name":"WEISBERG SETH","owner_url":"/insider/0001254801","role":"Officer (Chief Legal Officer), Other","role_mark":"O","role_mark_label":"Officer (Chief Legal Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Legal Officer","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":140.11,"price_display":"140.11","price_state":"stated","total_value":70055.0,"total_display":"70,055.00","total_whole":"70,055","shares_owned_after":22572.0,"shares_owned_after_display":"22,572","ownership_form":"D","is_10b5_1":null,"transaction_date":"2017-05-25","filed_date":"2017-05-26","scope":"insider"},{"id":5061234,"accession":"0001209191-17-017161","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001209191-17-017161","line_url":"/filing/0001209191-17-017161#line-2","is_derivative":false,"issuer_cik":"0001082923","issuer_name":"STAMPS.COM INC","issuer_ticker":"STMP","issuer_name_source":null,"issuer_url":"/issuer/0001082923","owner_cik":"0001254801","owner_name":"WEISBERG SETH","owner_display_name":"WEISBERG SETH","owner_url":"/insider/0001254801","role":"Officer (Chief Legal Officer), Other","role_mark":"O","role_mark_label":"Officer (Chief Legal Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Legal Officer","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":123.7706,"price_display":"123.77","price_state":"stated","total_value":618853.0,"total_display":"618,853.00","total_whole":"618,853","shares_owned_after":22572.0,"shares_owned_after_display":"22,572","ownership_form":"D","is_10b5_1":null,"transaction_date":"2017-03-01","filed_date":"2017-03-03","scope":"insider"},{"id":2205787,"accession":"0001209191-16-105654","txn_seq":4,"anchor":"line-4","filing_url":"/filing/0001209191-16-105654","line_url":"/filing/0001209191-16-105654","is_derivative":false,"issuer_cik":"0001082923","issuer_name":"STAMPS.COM INC","issuer_ticker":"STMP","issuer_name_source":null,"issuer_url":"/issuer/0001082923","owner_cik":"0001254801","owner_name":"WEISBERG SETH","owner_display_name":"WEISBERG SETH","owner_url":"/insider/0001254801","role":"Officer (Chief Legal Officer), Other","role_mark":"O","role_mark_label":"Officer (Chief Legal Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Legal Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":11096.0,"shares_display":"11,096","price_per_share":120.6315,"price_display":"120.63","price_state":"stated","total_value":1338527.124,"total_display":"1,338,527.12","total_whole":"1,338,527","shares_owned_after":19168.0,"shares_owned_after_display":"19,168","ownership_form":"D","is_10b5_1":null,"transaction_date":"2016-03-01","filed_date":"2016-03-03","scope":"insider","n_lines":2},{"id":8786083,"accession":"0001209191-15-065385","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001209191-15-065385","line_url":"/filing/0001209191-15-065385#line-2","is_derivative":false,"issuer_cik":"0001082923","issuer_name":"STAMPS.COM INC","issuer_ticker":"STMP","issuer_name_source":null,"issuer_url":"/issuer/0001082923","owner_cik":"0001254801","owner_name":"WEISBERG SETH","owner_display_name":"WEISBERG SETH","owner_url":"/insider/0001254801","role":"Officer (Chief Legal Officer), Other","role_mark":"O","role_mark_label":"Officer (Chief Legal Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Legal Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":30000.0,"shares_display":"30,000","price_per_share":83.3219,"price_display":"83.32","price_state":"stated","total_value":2499657.0,"total_display":"2,499,657.00","total_whole":"2,499,657","shares_owned_after":18814.0,"shares_owned_after_display":"18,814","ownership_form":"D","is_10b5_1":null,"transaction_date":"2015-08-07","filed_date":"2015-08-11","scope":"insider"},{"id":8785884,"accession":"0001209191-15-056527","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001209191-15-056527","line_url":"/filing/0001209191-15-056527#line-2","is_derivative":false,"issuer_cik":"0001082923","issuer_name":"STAMPS.COM INC","issuer_ticker":"STMP","issuer_name_source":null,"issuer_url":"/issuer/0001082923","owner_cik":"0001254801","owner_name":"WEISBERG SETH","owner_display_name":"WEISBERG SETH","owner_url":"/insider/0001254801","role":"Officer (Chief Legal Officer), Other","role_mark":"O","role_mark_label":"Officer (Chief Legal Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Legal Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":5698.0,"shares_display":"5,698","price_per_share":74.2732,"price_display":"74.27","price_state":"stated","total_value":423208.6936,"total_display":"423,208.69","total_whole":"423,209","shares_owned_after":11686.0,"shares_owned_after_display":"11,686","ownership_form":"D","is_10b5_1":null,"transaction_date":"2015-06-23","filed_date":"2015-06-25","scope":"insider"},{"id":8719684,"accession":"0001209191-15-041950","txn_seq":4,"anchor":"line-4","filing_url":"/filing/0001209191-15-041950","line_url":"/filing/0001209191-15-041950#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":"0001254801","owner_name":"WEISBERG SETH","owner_display_name":"WEISBERG SETH","owner_url":"/insider/0001254801","role":"Officer (Chief Legal Officer), Other","role_mark":"O","role_mark_label":"Officer (Chief Legal Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Legal Officer","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":74.29,"price_display":"74.29","price_state":"stated","total_value":104006.0,"total_display":"104,006.00","total_whole":"104,006","shares_owned_after":11686.0,"shares_owned_after_display":"11,686","ownership_form":"D","is_10b5_1":null,"transaction_date":"2015-05-11","filed_date":"2015-05-12","scope":"insider"},{"id":8719679,"accession":"0001209191-15-041950","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001209191-15-041950","line_url":"/filing/0001209191-15-041950#line-2","is_derivative":false,"issuer_cik":"0001082923","issuer_name":"STAMPS.COM INC","issuer_ticker":"STMP","issuer_name_source":null,"issuer_url":"/issuer/0001082923","owner_cik":"0001254801","owner_name":"WEISBERG SETH","owner_display_name":"WEISBERG SETH","owner_url":"/insider/0001254801","role":"Officer (Chief Legal Officer), Other","role_mark":"O","role_mark_label":"Officer (Chief Legal Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Legal Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":12902.0,"shares_display":"12,902","price_per_share":72.5559,"price_display":"72.56","price_state":"stated","total_value":936116.2218,"total_display":"936,116.22","total_whole":"936,116","shares_owned_after":11686.0,"shares_owned_after_display":"11,686","ownership_form":"D","is_10b5_1":null,"transaction_date":"2015-05-08","filed_date":"2015-05-12","scope":"insider"},{"id":8488631,"accession":"0001209191-15-029996","txn_seq":4,"anchor":"line-4","filing_url":"/filing/0001209191-15-029996","line_url":"/filing/0001209191-15-029996#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":"0001254801","owner_name":"WEISBERG SETH","owner_display_name":"WEISBERG SETH","owner_url":"/insider/0001254801","role":"Officer (Chief Legal Officer), Other","role_mark":"O","role_mark_label":"Officer (Chief Legal Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Legal Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":300.0,"shares_display":"300","price_per_share":68.01,"price_display":"68.01","price_state":"stated","total_value":20403.0,"total_display":"20,403.00","total_whole":"20,403","shares_owned_after":11686.0,"shares_owned_after_display":"11,686","ownership_form":"D","is_10b5_1":null,"transaction_date":"2015-03-26","filed_date":"2015-03-27","scope":"insider"}],"collapsed":true,"next_cursor":"2015-03-26|8488631","ledger_fault":false,"count":{"value":113,"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":113,"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":113},"affiliations":[{"type":"issuer","type_label":"ISSUER","cik":"0001082923","name":"STAMPS.COM INC","url":"/issuer/0001082923","role":"Officer (Chief Legal Officer), Other","n_filings":53,"first_seen":"2005-03-16","last_seen":"2017-08-07"}],"order_statement":"Newest transaction date first, id breaking the tie.","canonical_url":"https://ebomi.com/insider/0001254801","retrieved_at":"2026-08-24T09:28:20+00:00","coverage":{"filings":1506293,"transactions":4290787,"issuers":28597,"insiders":152303,"first_filed_date":"2003-06-30","last_filed_date":"2026-08-21","last_ingest":"2026-08-22T05:23:40.159918+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"}}