{"entity":{"type":"insider","cik":"0001251088","url":"/insider/0001251088","json_url":"/insider/0001251088.json","name":"BARKER LAWRENCE S","name_source":"as-filed","also_issuer":false,"cross_url":null},"coverage_statement":{"n_transactions":38,"n_filings":11,"first":"2003-08-27","last":"2012-12-17","span_basis":"filed_date"},"name_variants":[{"name":"BARKER LAWRENCE S","source":"filing","n_filings":11,"first_seen":"2003-08-27","last_seen":"2012-12-17"}],"transactions":[{"id":2154932,"accession":"0001181431-12-064958","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001181431-12-064958","line_url":"/filing/0001181431-12-064958#line-1","is_derivative":false,"issuer_cik":"0000915324","issuer_name":"TELULAR CORP","issuer_ticker":"WRLS","issuer_name_source":null,"issuer_url":"/issuer/0000915324","owner_cik":"0001251088","owner_name":"BARKER LAWRENCE S","owner_display_name":"BARKER LAWRENCE S","owner_url":"/insider/0001251088","role":"Director","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":null,"security_title":"Telular Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":3903.0,"shares_display":"3,903","price_per_share":9.648,"price_display":"9.65","price_state":"stated","total_value":37656.144,"total_display":"37,656.14","total_whole":"37,656","shares_owned_after":47142.0,"shares_owned_after_display":"47,142","ownership_form":"D","is_10b5_1":null,"transaction_date":"2012-12-14","filed_date":"2012-12-17","scope":"insider"},{"id":7743375,"accession":"0001181431-10-023808","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001181431-10-023808","line_url":"/filing/0001181431-10-023808#line-1","is_derivative":false,"issuer_cik":"0000915324","issuer_name":"TELULAR CORP","issuer_ticker":"WRLS","issuer_name_source":null,"issuer_url":"/issuer/0000915324","owner_cik":"0001251088","owner_name":"BARKER LAWRENCE S","owner_display_name":"BARKER LAWRENCE S","owner_url":"/insider/0001251088","role":"Director","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":null,"security_title":"Telular Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":2000.0,"shares_display":"2,000","price_per_share":3.01,"price_display":"3.01","price_state":"stated","total_value":6020.0,"total_display":"6,020.00","total_whole":"6,020","shares_owned_after":6527.0,"shares_owned_after_display":"6,527","ownership_form":"D","is_10b5_1":null,"transaction_date":"2010-05-03","filed_date":"2010-05-03","scope":"insider"},{"id":624815,"accession":"0001181431-04-039560","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001181431-04-039560","line_url":"/filing/0001181431-04-039560#line-1","is_derivative":false,"issuer_cik":"0001000495","issuer_name":"VISUAL NETWORKS INC","issuer_ticker":"VNWK","issuer_name_source":null,"issuer_url":"/issuer/0001000495","owner_cik":"0001251088","owner_name":"BARKER LAWRENCE S","owner_display_name":"BARKER LAWRENCE S","owner_url":"/insider/0001251088","role":"Director, Officer (President and CEO)","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"President and CEO","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":2000.0,"shares_display":"2,000","price_per_share":2.35,"price_display":"2.35","price_state":"stated","total_value":4700.0,"total_display":"4,700.00","total_whole":"4,700","shares_owned_after":99885.0,"shares_owned_after_display":"99,885","ownership_form":"D","is_10b5_1":null,"transaction_date":"2004-08-09","filed_date":"2004-08-10","scope":"insider"},{"id":468508,"accession":"0001181431-04-037735","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001181431-04-037735","line_url":"/filing/0001181431-04-037735#line-2","is_derivative":false,"issuer_cik":"0001000495","issuer_name":"VISUAL NETWORKS INC","issuer_ticker":"VNWK","issuer_name_source":null,"issuer_url":"/issuer/0001000495","owner_cik":"0001251088","owner_name":"BARKER LAWRENCE S","owner_display_name":"BARKER LAWRENCE S","owner_url":"/insider/0001251088","role":"Director, Officer (President and CEO)","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"President and CEO","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":4000.0,"shares_display":"4,000","price_per_share":2.5,"price_display":"2.50","price_state":"stated","total_value":10000.0,"total_display":"10,000.00","total_whole":"10,000","shares_owned_after":97885.0,"shares_owned_after_display":"97,885","ownership_form":"D","is_10b5_1":null,"transaction_date":"2004-07-28","filed_date":"2004-07-29","scope":"insider"},{"id":573307,"accession":"0001181431-04-023399","txn_seq":4,"anchor":"line-4","filing_url":"/filing/0001181431-04-023399","line_url":"/filing/0001181431-04-023399","is_derivative":false,"issuer_cik":"0001000495","issuer_name":"VISUAL NETWORKS INC","issuer_ticker":"VNWK","issuer_name_source":null,"issuer_url":"/issuer/0001000495","owner_cik":"0001251088","owner_name":"BARKER LAWRENCE S","owner_display_name":"BARKER LAWRENCE S","owner_url":"/insider/0001251088","role":"Director, Officer (President and CEO)","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"President and CEO","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":5000.0,"shares_display":"5,000","price_per_share":3.16932,"price_display":"3.17","price_state":"stated","total_value":15846.6,"total_display":"15,846.60","total_whole":"15,847","shares_owned_after":86132.0,"shares_owned_after_display":"86,132","ownership_form":"D","is_10b5_1":null,"transaction_date":"2004-04-30","filed_date":"2004-04-30","scope":"insider","n_lines":4},{"id":213310,"accession":"0001181431-04-011439","txn_seq":3,"anchor":"line-3","filing_url":"/filing/0001181431-04-011439","line_url":"/filing/0001181431-04-011439","is_derivative":false,"issuer_cik":"0001000495","issuer_name":"VISUAL NETWORKS INC","issuer_ticker":"VNWK","issuer_name_source":null,"issuer_url":"/issuer/0001000495","owner_cik":"0001251088","owner_name":"BARKER LAWRENCE S","owner_display_name":"BARKER LAWRENCE S","owner_url":"/insider/0001251088","role":"Director, Officer (President and CEO)","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"President and CEO","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":7500.0,"shares_display":"7,500","price_per_share":3.43632,"price_display":"3.44","price_state":"stated","total_value":25772.4,"total_display":"25,772.40","total_whole":"25,772","shares_owned_after":81572.0,"shares_owned_after_display":"81,572","ownership_form":"D","is_10b5_1":null,"transaction_date":"2004-02-23","filed_date":"2004-02-23","scope":"insider","n_lines":3},{"id":9243641,"accession":"0001181431-03-031472","txn_seq":4,"anchor":"line-4","filing_url":"/filing/0001181431-03-031472","line_url":"/filing/0001181431-03-031472","is_derivative":false,"issuer_cik":"0001251088","issuer_name":"VISUAL NETWORKS INC","issuer_ticker":"VNWK","issuer_name_source":null,"issuer_url":"/issuer/0001251088","owner_cik":"0001251088","owner_name":"BARKER LAWRENCE S","owner_display_name":"BARKER LAWRENCE S","owner_url":"/insider/0001251088","role":"Director, Officer (President and CEO)","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"President and CEO","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":5000.0,"shares_display":"5,000","price_per_share":1.9414,"price_display":"1.94","price_state":"stated","total_value":9707.0,"total_display":"9,707.00","total_whole":"9,707","shares_owned_after":70172.0,"shares_owned_after_display":"70,172","ownership_form":"D","is_10b5_1":null,"transaction_date":"2003-11-13","filed_date":"2003-11-17","scope":"insider","n_lines":5},{"id":5975,"accession":"0001181431-03-031129","txn_seq":5,"anchor":"line-5","filing_url":"/filing/0001181431-03-031129","line_url":"/filing/0001181431-03-031129","is_derivative":false,"issuer_cik":"0001000495","issuer_name":"VISUAL NETWORKS INC","issuer_ticker":"VNWK","issuer_name_source":null,"issuer_url":"/issuer/0001000495","owner_cik":"0001251088","owner_name":"BARKER LAWRENCE S","owner_display_name":"BARKER LAWRENCE S","owner_url":"/insider/0001251088","role":"Director, Officer (President and CEO)","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"President and CEO","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":18872.0,"shares_display":"18,872","price_per_share":1.9344658753709199,"price_display":"1.93","price_state":"stated","total_value":36507.24,"total_display":"36,507.24","total_whole":"36,507","shares_owned_after":67172.0,"shares_owned_after_display":"67,172","ownership_form":"D","is_10b5_1":null,"transaction_date":"2003-11-13","filed_date":"2003-11-14","scope":"insider","n_lines":5},{"id":23747,"accession":"0001181431-03-029558","txn_seq":4,"anchor":"line-4","filing_url":"/filing/0001181431-03-029558","line_url":"/filing/0001181431-03-029558","is_derivative":false,"issuer_cik":"0001000495","issuer_name":"VISUAL NETWORKS INC","issuer_ticker":"VNWK","issuer_name_source":null,"issuer_url":"/issuer/0001000495","owner_cik":"0001251088","owner_name":"BARKER LAWRENCE S","owner_display_name":"BARKER LAWRENCE S","owner_url":"/insider/0001251088","role":"Officer (President and CEO)","role_mark":"O","role_mark_label":"Officer (President and CEO)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"President and CEO","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":5000.0,"shares_display":"5,000","price_per_share":1.8608,"price_display":"1.86","price_state":"stated","total_value":9304.0,"total_display":"9,304.00","total_whole":"9,304","shares_owned_after":66572.0,"shares_owned_after_display":"66,572","ownership_form":"D","is_10b5_1":null,"transaction_date":"2003-11-03","filed_date":"2003-11-06","scope":"insider","n_lines":2},{"id":23745,"accession":"0001181431-03-029558","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001181431-03-029558","line_url":"/filing/0001181431-03-029558#line-2","is_derivative":false,"issuer_cik":"0001000495","issuer_name":"VISUAL NETWORKS INC","issuer_ticker":"VNWK","issuer_name_source":null,"issuer_url":"/issuer/0001000495","owner_cik":"0001251088","owner_name":"BARKER LAWRENCE S","owner_display_name":"BARKER LAWRENCE S","owner_url":"/insider/0001251088","role":"Officer (President and CEO)","role_mark":"O","role_mark_label":"Officer (President and CEO)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"President and CEO","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":5000.0,"shares_display":"5,000","price_per_share":1.7,"price_display":"1.70","price_state":"stated","total_value":8500.0,"total_display":"8,500.00","total_whole":"8,500","shares_owned_after":61572.0,"shares_owned_after_display":"61,572","ownership_form":"D","is_10b5_1":null,"transaction_date":"2003-10-31","filed_date":"2003-11-06","scope":"insider"},{"id":199223,"accession":"0001169232-03-005509","txn_seq":7,"anchor":"line-7","filing_url":"/filing/0001169232-03-005509","line_url":"/filing/0001169232-03-005509","is_derivative":false,"issuer_cik":"0001000495","issuer_name":"VISUAL NETWORKS INC","issuer_ticker":"VNWK","issuer_name_source":null,"issuer_url":"/issuer/0001000495","owner_cik":"0001251088","owner_name":"BARKER LAWRENCE S","owner_display_name":"BARKER LAWRENCE S","owner_url":"/insider/0001251088","role":"Director, Officer (President and CEO)","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"President and CEO","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":9800.0,"shares_display":"9,800","price_per_share":1.4840510204081632,"price_display":"1.48","price_state":"stated","total_value":14543.7,"total_display":"14,543.70","total_whole":"14,544","shares_owned_after":50000.0,"shares_owned_after_display":"50,000","ownership_form":"D","is_10b5_1":null,"transaction_date":"2003-08-29","filed_date":"2003-08-29","scope":"insider","n_lines":4},{"id":199219,"accession":"0001169232-03-005509","txn_seq":3,"anchor":"line-3","filing_url":"/filing/0001169232-03-005509","line_url":"/filing/0001169232-03-005509","is_derivative":false,"issuer_cik":"0001000495","issuer_name":"VISUAL NETWORKS INC","issuer_ticker":"VNWK","issuer_name_source":null,"issuer_url":"/issuer/0001000495","owner_cik":"0001251088","owner_name":"BARKER LAWRENCE S","owner_display_name":"BARKER LAWRENCE S","owner_url":"/insider/0001251088","role":"Director, Officer (President and CEO)","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"President and CEO","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":15200.0,"shares_display":"15,200","price_per_share":1.2575657894736842,"price_display":"1.26","price_state":"stated","total_value":19115.0,"total_display":"19,115.00","total_whole":"19,115","shares_owned_after":35700.0,"shares_owned_after_display":"35,700","ownership_form":"D","is_10b5_1":null,"transaction_date":"2003-08-27","filed_date":"2003-08-29","scope":"insider","n_lines":3},{"id":32767,"accession":"0001169232-03-005454","txn_seq":7,"anchor":"line-7","filing_url":"/filing/0001169232-03-005454","line_url":"/filing/0001169232-03-005454","is_derivative":false,"issuer_cik":"0001000495","issuer_name":"VISUAL NETWORKS INC","issuer_ticker":"VNWK","issuer_name_source":null,"issuer_url":"/issuer/0001000495","owner_cik":"0001251088","owner_name":"BARKER LAWRENCE S","owner_display_name":"BARKER LAWRENCE S","owner_url":"/insider/0001251088","role":"Director, Officer (President and CEO)","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"President and CEO","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":15000.0,"shares_display":"15,000","price_per_share":1.2654,"price_display":"1.27","price_state":"stated","total_value":18981.0,"total_display":"18,981.00","total_whole":"18,981","shares_owned_after":22700.0,"shares_owned_after_display":"22,700","ownership_form":"D","is_10b5_1":null,"transaction_date":"2003-08-26","filed_date":"2003-08-27","scope":"insider","n_lines":4},{"id":32763,"accession":"0001169232-03-005454","txn_seq":3,"anchor":"line-3","filing_url":"/filing/0001169232-03-005454","line_url":"/filing/0001169232-03-005454","is_derivative":false,"issuer_cik":"0001000495","issuer_name":"VISUAL NETWORKS INC","issuer_ticker":"VNWK","issuer_name_source":null,"issuer_url":"/issuer/0001000495","owner_cik":"0001251088","owner_name":"BARKER LAWRENCE S","owner_display_name":"BARKER LAWRENCE S","owner_url":"/insider/0001251088","role":"Director, Officer (President and CEO)","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"President and CEO","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":10000.0,"shares_display":"10,000","price_per_share":1.2555,"price_display":"1.26","price_state":"stated","total_value":12555.0,"total_display":"12,555.00","total_whole":"12,555","shares_owned_after":7000.0,"shares_owned_after_display":"7,000","ownership_form":"D","is_10b5_1":null,"transaction_date":"2003-08-25","filed_date":"2003-08-27","scope":"insider","n_lines":3}],"collapsed":true,"next_cursor":null,"ledger_fault":false,"count":{"value":38,"kind":"exact"},"open_market_only":false,"composition":{"kind":"exact","rows":[{"code":"P","label":"Open-market purchase","n":37,"open_market":true},{"code":"S","label":"Open-market sale","n":1,"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":38},"affiliations":[{"type":"issuer","type_label":"ISSUER","cik":"0000915324","name":"TELULAR CORP","url":"/issuer/0000915324","role":"Director","n_filings":2,"first_seen":"2010-05-03","last_seen":"2012-12-17"},{"type":"issuer","type_label":"ISSUER","cik":"0001000495","name":"VISUAL NETWORKS INC","url":"/issuer/0001000495","role":"Director, Officer (President and CEO)","n_filings":9,"first_seen":"2003-08-27","last_seen":"2004-08-10"}],"order_statement":"Newest transaction date first, id breaking the tie.","canonical_url":"https://ebomi.com/insider/0001251088","retrieved_at":"2026-08-27T06:17:19+00:00","coverage":{"filings":1506293,"transactions":4290787,"issuers":28597,"insiders":152303,"first_filed_date":"2003-06-30","last_filed_date":"2026-08-26","last_ingest":"2026-08-27T05:24:39.644631+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"}}