{"entity":{"type":"insider","cik":"0001713603","url":"/insider/0001713603","json_url":"/insider/0001713603.json","name":"Buerba Sebastian","name_source":"as-filed","also_issuer":false,"cross_url":null},"coverage_statement":{"n_transactions":175,"n_filings":26,"first":"2017-09-13","last":"2021-09-08","span_basis":"filed_date"},"name_variants":[{"name":"Buerba Sebastian","source":"filing","n_filings":26,"first_seen":"2017-09-13","last_seen":"2021-09-08"}],"transactions":[{"id":4583245,"accession":"0001082923-21-000133","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001082923-21-000133","line_url":"/filing/0001082923-21-000133#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":"0001713603","owner_name":"Buerba Sebastian","owner_display_name":"Buerba Sebastian","owner_url":"/insider/0001713603","role":"Officer (Chief Marketing Officer)","role_mark":"O","role_mark_label":"Officer (Chief Marketing Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Marketing Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":2511.0,"shares_display":"2,511","price_per_share":328.6524,"price_display":"328.65","price_state":"stated","total_value":825246.1764,"total_display":"825,246.18","total_whole":"825,246","shares_owned_after":0.0,"shares_owned_after_display":"0","ownership_form":"D","is_10b5_1":null,"transaction_date":"2021-09-03","filed_date":"2021-09-08","scope":"insider"},{"id":4100343,"accession":"0001082923-21-000119","txn_seq":3,"anchor":"line-3","filing_url":"/filing/0001082923-21-000119","line_url":"/filing/0001082923-21-000119","is_derivative":false,"issuer_cik":"0001082923","issuer_name":"STAMPS.COM INC","issuer_ticker":"STMP","issuer_name_source":null,"issuer_url":"/issuer/0001082923","owner_cik":"0001713603","owner_name":"Buerba Sebastian","owner_display_name":"Buerba Sebastian","owner_url":"/insider/0001713603","role":"Officer (Chief Marketing Officer)","role_mark":"O","role_mark_label":"Officer (Chief Marketing Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Marketing Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":2511.0,"shares_display":"2,511","price_per_share":327.75686109119874,"price_display":"327.76","price_state":"stated","total_value":822997.4782,"total_display":"822,997.48","total_whole":"822,997","shares_owned_after":0.0,"shares_owned_after_display":"0","ownership_form":"D","is_10b5_1":null,"transaction_date":"2021-08-03","filed_date":"2021-08-05","scope":"insider","n_lines":2},{"id":5095676,"accession":"0001082923-21-000079","txn_seq":5,"anchor":"line-5","filing_url":"/filing/0001082923-21-000079","line_url":"/filing/0001082923-21-000079","is_derivative":false,"issuer_cik":"0001082923","issuer_name":"STAMPS.COM INC","issuer_ticker":"STMP","issuer_name_source":null,"issuer_url":"/issuer/0001082923","owner_cik":"0001713603","owner_name":"Buerba Sebastian","owner_display_name":"Buerba Sebastian","owner_url":"/insider/0001713603","role":"Officer (Chief Marketing Officer)","role_mark":"O","role_mark_label":"Officer (Chief Marketing Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Marketing Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":2511.0,"shares_display":"2,511","price_per_share":200.68595475906014,"price_display":"200.69","price_state":"stated","total_value":503922.4324,"total_display":"503,922.43","total_whole":"503,922","shares_owned_after":354.0,"shares_owned_after_display":"354","ownership_form":"D","is_10b5_1":null,"transaction_date":"2021-07-06","filed_date":"2021-07-08","scope":"insider","n_lines":4},{"id":5440361,"accession":"0001082923-21-000075","txn_seq":4,"anchor":"line-4","filing_url":"/filing/0001082923-21-000075","line_url":"/filing/0001082923-21-000075","is_derivative":false,"issuer_cik":"0001082923","issuer_name":"STAMPS.COM INC","issuer_ticker":"STMP","issuer_name_source":null,"issuer_url":"/issuer/0001082923","owner_cik":"0001713603","owner_name":"Buerba Sebastian","owner_display_name":"Buerba Sebastian","owner_url":"/insider/0001713603","role":"Officer (Chief Marketing Officer)","role_mark":"O","role_mark_label":"Officer (Chief Marketing Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Marketing Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":9802.0,"shares_display":"9,802","price_per_share":197.32612849418487,"price_display":"197.33","price_state":"stated","total_value":1934190.7115,"total_display":"1,934,190.71","total_whole":"1,934,191","shares_owned_after":5799.0,"shares_owned_after_display":"5,799","ownership_form":"D","is_10b5_1":null,"transaction_date":"2021-06-11","filed_date":"2021-06-15","scope":"insider","n_lines":3},{"id":5246868,"accession":"0001082923-21-000037","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001082923-21-000037","line_url":"/filing/0001082923-21-000037#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":"0001713603","owner_name":"Buerba Sebastian","owner_display_name":"Buerba Sebastian","owner_url":"/insider/0001713603","role":"Officer (Chief Marketing Officer)","role_mark":"O","role_mark_label":"Officer (Chief Marketing Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Marketing Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":242.0,"shares_display":"242","price_per_share":196.3,"price_display":"196.30","price_state":"stated","total_value":47504.6,"total_display":"47,504.60","total_whole":"47,505","shares_owned_after":0.0,"shares_owned_after_display":"0","ownership_form":"D","is_10b5_1":null,"transaction_date":"2021-03-03","filed_date":"2021-03-05","scope":"insider"},{"id":4842677,"accession":"0001082923-21-000024","txn_seq":6,"anchor":"line-6","filing_url":"/filing/0001082923-21-000024","line_url":"/filing/0001082923-21-000024","is_derivative":false,"issuer_cik":"0001082923","issuer_name":"STAMPS.COM INC","issuer_ticker":"STMP","issuer_name_source":null,"issuer_url":"/issuer/0001082923","owner_cik":"0001713603","owner_name":"Buerba Sebastian","owner_display_name":"Buerba Sebastian","owner_url":"/insider/0001713603","role":"Officer (Chief Marketing Officer)","role_mark":"O","role_mark_label":"Officer (Chief Marketing Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Marketing Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":2511.0,"shares_display":"2,511","price_per_share":238.25428634010353,"price_display":"238.25","price_state":"stated","total_value":598256.513,"total_display":"598,256.51","total_whole":"598,257","shares_owned_after":1007.0,"shares_owned_after_display":"1,007","ownership_form":"D","is_10b5_1":null,"transaction_date":"2021-02-03","filed_date":"2021-02-05","scope":"insider","n_lines":5},{"id":4456841,"accession":"0001082923-21-000002","txn_seq":9,"anchor":"line-9","filing_url":"/filing/0001082923-21-000002","line_url":"/filing/0001082923-21-000002","is_derivative":false,"issuer_cik":"0001082923","issuer_name":"STAMPS.COM INC","issuer_ticker":"STMP","issuer_name_source":null,"issuer_url":"/issuer/0001082923","owner_cik":"0001713603","owner_name":"Buerba Sebastian","owner_display_name":"Buerba Sebastian","owner_url":"/insider/0001713603","role":"Officer (Chief Marketing Officer)","role_mark":"O","role_mark_label":"Officer (Chief Marketing Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Marketing Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":2513.0,"shares_display":"2,513","price_per_share":202.17285642658177,"price_display":"202.17","price_state":"stated","total_value":508060.3882,"total_display":"508,060.39","total_whole":"508,060","shares_owned_after":742.0,"shares_owned_after_display":"742","ownership_form":"D","is_10b5_1":null,"transaction_date":"2021-01-04","filed_date":"2021-01-06","scope":"insider","n_lines":8},{"id":2911208,"accession":"0001082923-20-000171","txn_seq":4,"anchor":"line-4","filing_url":"/filing/0001082923-20-000171","line_url":"/filing/0001082923-20-000171","is_derivative":false,"issuer_cik":"0001082923","issuer_name":"STAMPS.COM INC","issuer_ticker":"STMP","issuer_name_source":null,"issuer_url":"/issuer/0001082923","owner_cik":"0001713603","owner_name":"Buerba Sebastian","owner_display_name":"Buerba Sebastian","owner_url":"/insider/0001713603","role":"Officer (Chief Marketing Officer)","role_mark":"O","role_mark_label":"Officer (Chief Marketing Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Marketing Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":2346.0,"shares_display":"2,346","price_per_share":197.2409556692242,"price_display":"197.24","price_state":"stated","total_value":462727.282,"total_display":"462,727.28","total_whole":"462,727","shares_owned_after":226.0,"shares_owned_after_display":"226","ownership_form":"D","is_10b5_1":null,"transaction_date":"2020-12-08","filed_date":"2020-12-10","scope":"insider","n_lines":3},{"id":3283202,"accession":"0001082923-20-000169","txn_seq":4,"anchor":"line-4","filing_url":"/filing/0001082923-20-000169","line_url":"/filing/0001082923-20-000169#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":"0001713603","owner_name":"Buerba Sebastian","owner_display_name":"Buerba Sebastian","owner_url":"/insider/0001713603","role":"Officer (Chief Marketing Officer)","role_mark":"O","role_mark_label":"Officer (Chief Marketing Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Marketing Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":127.0,"shares_display":"127","price_per_share":196.5539,"price_display":"196.55","price_state":"stated","total_value":24962.3453,"total_display":"24,962.35","total_whole":"24,962","shares_owned_after":0.0,"shares_owned_after_display":"0","ownership_form":"D","is_10b5_1":null,"transaction_date":"2020-12-07","filed_date":"2020-12-07","scope":"insider"},{"id":3283193,"accession":"0001082923-20-000169","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001082923-20-000169","line_url":"/filing/0001082923-20-000169#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":"0001713603","owner_name":"Buerba Sebastian","owner_display_name":"Buerba Sebastian","owner_url":"/insider/0001713603","role":"Officer (Chief Marketing Officer)","role_mark":"O","role_mark_label":"Officer (Chief Marketing Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Marketing Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":38.0,"shares_display":"38","price_per_share":196.395,"price_display":"196.40","price_state":"stated","total_value":7463.01,"total_display":"7,463.01","total_whole":"7,463","shares_owned_after":0.0,"shares_owned_after_display":"0","ownership_form":"D","is_10b5_1":null,"transaction_date":"2020-12-03","filed_date":"2020-12-07","scope":"insider"},{"id":3327936,"accession":"0001082923-20-000152","txn_seq":11,"anchor":"line-11","filing_url":"/filing/0001082923-20-000152","line_url":"/filing/0001082923-20-000152","is_derivative":false,"issuer_cik":"0001082923","issuer_name":"STAMPS.COM INC","issuer_ticker":"STMP","issuer_name_source":null,"issuer_url":"/issuer/0001082923","owner_cik":"0001713603","owner_name":"Buerba Sebastian","owner_display_name":"Buerba Sebastian","owner_url":"/insider/0001713603","role":"Officer (Chief Marketing Officer)","role_mark":"O","role_mark_label":"Officer (Chief Marketing Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Marketing Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":2511.0,"shares_display":"2,511","price_per_share":227.299093389088,"price_display":"227.30","price_state":"stated","total_value":570748.0235,"total_display":"570,748.02","total_whole":"570,748","shares_owned_after":1286.0,"shares_owned_after_display":"1,286","ownership_form":"D","is_10b5_1":null,"transaction_date":"2020-11-03","filed_date":"2020-11-05","scope":"insider","n_lines":10},{"id":2605628,"accession":"0001082923-20-000137","txn_seq":10,"anchor":"line-10","filing_url":"/filing/0001082923-20-000137","line_url":"/filing/0001082923-20-000137","is_derivative":false,"issuer_cik":"0001082923","issuer_name":"STAMPS.COM INC","issuer_ticker":"STMP","issuer_name_source":null,"issuer_url":"/issuer/0001082923","owner_cik":"0001713603","owner_name":"Buerba Sebastian","owner_display_name":"Buerba Sebastian","owner_url":"/insider/0001713603","role":"Officer (Chief Marketing Officer)","role_mark":"O","role_mark_label":"Officer (Chief Marketing Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Marketing Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":2511.0,"shares_display":"2,511","price_per_share":262.9553372361609,"price_display":"262.96","price_state":"stated","total_value":660280.8518,"total_display":"660,280.85","total_whole":"660,281","shares_owned_after":239.0,"shares_owned_after_display":"239","ownership_form":"D","is_10b5_1":null,"transaction_date":"2020-10-05","filed_date":"2020-10-07","scope":"insider","n_lines":9},{"id":2465903,"accession":"0001082923-20-000120","txn_seq":19,"anchor":"line-19","filing_url":"/filing/0001082923-20-000120","line_url":"/filing/0001082923-20-000120#line-19","is_derivative":false,"issuer_cik":"0001082923","issuer_name":"STAMPS.COM INC","issuer_ticker":"STMP","issuer_name_source":null,"issuer_url":"/issuer/0001082923","owner_cik":"0001713603","owner_name":"Buerba Sebastian","owner_display_name":"Buerba Sebastian","owner_url":"/insider/0001713603","role":"Officer (Chief Marketing Officer)","role_mark":"O","role_mark_label":"Officer (Chief Marketing Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Marketing Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":427.0,"shares_display":"427","price_per_share":232.1075,"price_display":"232.11","price_state":"stated","total_value":99109.9025,"total_display":"99,109.90","total_whole":"99,110","shares_owned_after":2084.0,"shares_owned_after_display":"2,084","ownership_form":"D","is_10b5_1":null,"transaction_date":"2020-09-03","filed_date":"2020-09-03","scope":"insider"},{"id":2465900,"accession":"0001082923-20-000120","txn_seq":18,"anchor":"line-18","filing_url":"/filing/0001082923-20-000120","line_url":"/filing/0001082923-20-000120#line-18","is_derivative":false,"issuer_cik":"0001082923","issuer_name":"STAMPS.COM INC","issuer_ticker":"STMP","issuer_name_source":null,"issuer_url":"/issuer/0001082923","owner_cik":"0001713603","owner_name":"Buerba Sebastian","owner_display_name":"Buerba Sebastian","owner_url":"/insider/0001713603","role":"Officer (Chief Marketing Officer)","role_mark":"O","role_mark_label":"Officer (Chief Marketing Officer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Chief Marketing Officer","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":295.0,"shares_display":"295","price_per_share":235.56,"price_display":"235.56","price_state":"stated","total_value":69490.2,"total_display":"69,490.20","total_whole":"69,490","shares_owned_after":1259.0,"shares_owned_after_display":"1,259","ownership_form":"D","is_10b5_1":null,"transaction_date":"2020-09-03","filed_date":"2020-09-03","scope":"insider"}],"collapsed":true,"next_cursor":"2020-09-03|2465900","ledger_fault":false,"count":{"value":175,"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":175,"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":175},"affiliations":[{"type":"issuer","type_label":"ISSUER","cik":"0001082923","name":"STAMPS.COM INC","url":"/issuer/0001082923","role":"Officer (Chief Marketing Officer)","n_filings":26,"first_seen":"2017-09-13","last_seen":"2021-09-08"}],"order_statement":"Newest transaction date first, id breaking the tie.","canonical_url":"https://ebomi.com/insider/0001713603","retrieved_at":"2026-08-26T06:42:02+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"}}