{"entity":{"type":"insider","cik":"0001353664","url":"/insider/0001353664","json_url":"/insider/0001353664.json","name":"Marshall William A","name_source":"as-filed","also_issuer":false,"cross_url":null},"coverage_statement":{"n_transactions":11,"n_filings":4,"first":"2007-02-14","last":"2009-04-06","span_basis":"filed_date"},"name_variants":[{"name":"Marshall William A","source":"filing","n_filings":4,"first_seen":"2007-02-14","last_seen":"2009-04-06"}],"transactions":[{"id":9251083,"accession":"0001181431-09-019214","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001181431-09-019214","line_url":"/filing/0001181431-09-019214#line-1","is_derivative":false,"issuer_cik":"0000885074","issuer_name":"AUTHENTIDATE HOLDING CORP","issuer_ticker":"ADAT","issuer_name_source":null,"issuer_url":"/issuer/0000885074","owner_cik":"0001353664","owner_name":"Marshall William A","owner_display_name":"Marshall William A","owner_url":"/insider/0001353664","role":"Officer (CFO & Treasurer)","role_mark":"O","role_mark_label":"Officer (CFO & Treasurer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"CFO & Treasurer","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":185000.0,"shares_display":"185,000","price_per_share":0.275,"price_display":"0.28","price_state":"stated","total_value":50875.0,"total_display":"50,875.00","total_whole":"50,875","shares_owned_after":235000.0,"shares_owned_after_display":"235,000","ownership_form":"D","is_10b5_1":null,"transaction_date":"2009-03-31","filed_date":"2009-04-06","scope":"insider"},{"id":5585236,"accession":"0001181431-09-018394","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001181431-09-018394","line_url":"/filing/0001181431-09-018394#line-1","is_derivative":false,"issuer_cik":"0000885074","issuer_name":"AUTHENTIDATE HOLDING CORP","issuer_ticker":"ADAT","issuer_name_source":null,"issuer_url":"/issuer/0000885074","owner_cik":"0001353664","owner_name":"Marshall William A","owner_display_name":"Marshall William A","owner_url":"/insider/0001353664","role":"Officer (CFO & Treasurer)","role_mark":"O","role_mark_label":"Officer (CFO & Treasurer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"CFO & Treasurer","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":185000.0,"shares_display":"185,000","price_per_share":50875.0,"price_display":"50,875.00","price_state":"stated","total_value":9411875000.0,"total_display":"9,411,875,000.00","total_whole":"9,411,875,000","shares_owned_after":235000.0,"shares_owned_after_display":"235,000","ownership_form":"D","is_10b5_1":null,"transaction_date":"2009-03-31","filed_date":"2009-04-02","scope":"insider"},{"id":3877790,"accession":"0001181431-08-031732","txn_seq":4,"anchor":"line-4","filing_url":"/filing/0001181431-08-031732","line_url":"/filing/0001181431-08-031732","is_derivative":false,"issuer_cik":"0000885074","issuer_name":"AUTHENTIDATE HOLDING CORP","issuer_ticker":"ADAT","issuer_name_source":null,"issuer_url":"/issuer/0000885074","owner_cik":"0001353664","owner_name":"Marshall William A","owner_display_name":"Marshall William A","owner_url":"/insider/0001353664","role":"Officer (CFO & Treasurer)","role_mark":"O","role_mark_label":"Officer (CFO & Treasurer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"CFO & Treasurer","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":25000.0,"shares_display":"25,000","price_per_share":0.4671816,"price_display":"0.47","price_state":"stated","total_value":11679.54,"total_display":"11,679.54","total_whole":"11,680","shares_owned_after":44500.0,"shares_owned_after_display":"44,500","ownership_form":"D","is_10b5_1":null,"transaction_date":"2008-05-14","filed_date":"2008-05-15","scope":"insider","n_lines":4},{"id":7032569,"accession":"0001181431-07-011606","txn_seq":5,"anchor":"line-5","filing_url":"/filing/0001181431-07-011606","line_url":"/filing/0001181431-07-011606#line-5","is_derivative":false,"issuer_cik":"0000885074","issuer_name":"AUTHENTIDATE HOLDING CORP","issuer_ticker":"ADAT","issuer_name_source":null,"issuer_url":"/issuer/0000885074","owner_cik":"0001353664","owner_name":"Marshall William A","owner_display_name":"Marshall William A","owner_url":"/insider/0001353664","role":"Officer (CFO & Treasurer)","role_mark":"O","role_mark_label":"Officer (CFO & Treasurer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"CFO & Treasurer","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":13032.0,"shares_display":"13,032","price_per_share":1.48,"price_display":"1.48","price_state":"stated","total_value":19287.36,"total_display":"19,287.36","total_whole":"19,287","shares_owned_after":25000.0,"shares_owned_after_display":"25,000","ownership_form":"D","is_10b5_1":null,"transaction_date":"2007-02-13","filed_date":"2007-02-14","scope":"insider"},{"id":7032567,"accession":"0001181431-07-011606","txn_seq":4,"anchor":"line-4","filing_url":"/filing/0001181431-07-011606","line_url":"/filing/0001181431-07-011606","is_derivative":false,"issuer_cik":"0000885074","issuer_name":"AUTHENTIDATE HOLDING CORP","issuer_ticker":"ADAT","issuer_name_source":null,"issuer_url":"/issuer/0000885074","owner_cik":"0001353664","owner_name":"Marshall William A","owner_display_name":"Marshall William A","owner_url":"/insider/0001353664","role":"Officer (CFO & Treasurer)","role_mark":"O","role_mark_label":"Officer (CFO & Treasurer)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"CFO & Treasurer","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":11968.0,"shares_display":"11,968","price_per_share":1.4671323529411764,"price_display":"1.47","price_state":"stated","total_value":17558.64,"total_display":"17,558.64","total_whole":"17,559","shares_owned_after":9500.0,"shares_owned_after_display":"9,500","ownership_form":"D","is_10b5_1":null,"transaction_date":"2007-02-12","filed_date":"2007-02-14","scope":"insider","n_lines":4}],"collapsed":true,"next_cursor":null,"ledger_fault":false,"count":{"value":11,"kind":"exact"},"open_market_only":false,"composition":{"kind":"exact","rows":[{"code":"P","label":"Open-market purchase","n":11,"open_market":true},{"code":"S","label":"Open-market sale","n":0,"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":11},"affiliations":[{"type":"issuer","type_label":"ISSUER","cik":"0000885074","name":"AUTHENTIDATE HOLDING CORP","url":"/issuer/0000885074","role":"Officer (CFO & Treasurer)","n_filings":4,"first_seen":"2007-02-14","last_seen":"2009-04-06"}],"order_statement":"Newest transaction date first, id breaking the tie.","canonical_url":"https://ebomi.com/insider/0001353664","retrieved_at":"2026-08-24T15:28:09+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"}}