{"entity":{"type":"insider","cik":"0001418692","url":"/insider/0001418692","json_url":"/insider/0001418692.json","name":"Bittel Stephen","name_source":"as-filed","also_issuer":false,"cross_url":null},"coverage_statement":{"n_transactions":13,"n_filings":9,"first":"2011-08-08","last":"2011-10-03","span_basis":"filed_date"},"name_variants":[{"name":"Bittel Stephen","source":"filing","n_filings":9,"first_seen":"2011-08-08","last_seen":"2011-10-03"}],"transactions":[{"id":8984955,"accession":"0001179110-11-013809","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001179110-11-013809","line_url":"/filing/0001179110-11-013809#line-2","is_derivative":false,"issuer_cik":"0001372020","issuer_name":"Great Lakes Dredge & Dock CORP","issuer_ticker":"GLDD","issuer_name_source":null,"issuer_url":"/issuer/0001372020","owner_cik":"0001418692","owner_name":"Bittel Stephen","owner_url":"/insider/0001418692","role":"Director","officer_title":null,"security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":1587.0,"shares_display":"1,587","price_per_share":4.06,"price_display":"4.06","price_state":"stated","total_value":6443.22,"total_display":"6,443.22","shares_owned_after":90726.0,"shares_owned_after_display":"90,726","ownership_form":"D","is_10b5_1":null,"transaction_date":"2011-09-30","filed_date":"2011-10-03","scope":"insider"},{"id":8984954,"accession":"0001179110-11-013809","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001179110-11-013809","line_url":"/filing/0001179110-11-013809#line-1","is_derivative":false,"issuer_cik":"0001372020","issuer_name":"Great Lakes Dredge & Dock CORP","issuer_ticker":"GLDD","issuer_name_source":null,"issuer_url":"/issuer/0001372020","owner_cik":"0001418692","owner_name":"Bittel Stephen","owner_url":"/insider/0001418692","role":"Director","officer_title":null,"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":4.05,"price_display":"4.05","price_state":"stated","total_value":20250.0,"total_display":"20,250.00","shares_owned_after":90726.0,"shares_owned_after_display":"90,726","ownership_form":"D","is_10b5_1":null,"transaction_date":"2011-09-29","filed_date":"2011-10-03","scope":"insider"},{"id":8984946,"accession":"0001179110-11-013572","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001179110-11-013572","line_url":"/filing/0001179110-11-013572#line-1","is_derivative":false,"issuer_cik":"0001372020","issuer_name":"Great Lakes Dredge & Dock CORP","issuer_ticker":"GLDD","issuer_name_source":null,"issuer_url":"/issuer/0001372020","owner_cik":"0001418692","owner_name":"Bittel Stephen","owner_url":"/insider/0001418692","role":"Director","officer_title":null,"security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":3892.0,"shares_display":"3,892","price_per_share":4.11,"price_display":"4.11","price_state":"stated","total_value":15996.12,"total_display":"15,996.12","shares_owned_after":84139.0,"shares_owned_after_display":"84,139","ownership_form":"D","is_10b5_1":null,"transaction_date":"2011-09-22","filed_date":"2011-09-26","scope":"insider"},{"id":8975207,"accession":"0001179110-11-013476","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001179110-11-013476","line_url":"/filing/0001179110-11-013476#line-2","is_derivative":false,"issuer_cik":"0001372020","issuer_name":"Great Lakes Dredge & Dock CORP","issuer_ticker":"GLDD","issuer_name_source":null,"issuer_url":"/issuer/0001372020","owner_cik":"0001418692","owner_name":"Bittel Stephen","owner_url":"/insider/0001418692","role":"Director","officer_title":null,"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":4.38,"price_display":"4.38","price_state":"stated","total_value":43800.0,"total_display":"43,800.00","shares_owned_after":80247.0,"shares_owned_after_display":"80,247","ownership_form":"D","is_10b5_1":null,"transaction_date":"2011-09-21","filed_date":"2011-09-22","scope":"insider"},{"id":8975206,"accession":"0001179110-11-013476","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001179110-11-013476","line_url":"/filing/0001179110-11-013476#line-1","is_derivative":false,"issuer_cik":"0001372020","issuer_name":"Great Lakes Dredge & Dock CORP","issuer_ticker":"GLDD","issuer_name_source":null,"issuer_url":"/issuer/0001372020","owner_cik":"0001418692","owner_name":"Bittel Stephen","owner_url":"/insider/0001418692","role":"Director","officer_title":null,"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":4.46,"price_display":"4.46","price_state":"stated","total_value":22300.0,"total_display":"22,300.00","shares_owned_after":80247.0,"shares_owned_after_display":"80,247","ownership_form":"D","is_10b5_1":null,"transaction_date":"2011-09-20","filed_date":"2011-09-22","scope":"insider"},{"id":8984939,"accession":"0001179110-11-013310","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001179110-11-013310","line_url":"/filing/0001179110-11-013310#line-1","is_derivative":false,"issuer_cik":"0001372020","issuer_name":"Great Lakes Dredge & Dock CORP","issuer_ticker":"GLDD","issuer_name_source":null,"issuer_url":"/issuer/0001372020","owner_cik":"0001418692","owner_name":"Bittel Stephen","owner_url":"/insider/0001418692","role":"Director","officer_title":null,"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":4.45,"price_display":"4.45","price_state":"stated","total_value":8900.0,"total_display":"8,900.00","shares_owned_after":65247.0,"shares_owned_after_display":"65,247","ownership_form":"D","is_10b5_1":null,"transaction_date":"2011-09-13","filed_date":"2011-09-15","scope":"insider"},{"id":8952726,"accession":"0001179110-11-013223","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001179110-11-013223","line_url":"/filing/0001179110-11-013223#line-1","is_derivative":false,"issuer_cik":"0001372020","issuer_name":"Great Lakes Dredge & Dock CORP","issuer_ticker":"GLDD","issuer_name_source":null,"issuer_url":"/issuer/0001372020","owner_cik":"0001418692","owner_name":"Bittel Stephen","owner_url":"/insider/0001418692","role":"Director","officer_title":null,"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":4.47,"price_display":"4.47","price_state":"stated","total_value":44700.0,"total_display":"44,700.00","shares_owned_after":63247.0,"shares_owned_after_display":"63,247","ownership_form":"D","is_10b5_1":null,"transaction_date":"2011-09-09","filed_date":"2011-09-13","scope":"insider"},{"id":9111074,"accession":"0001179110-11-013060","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001179110-11-013060","line_url":"/filing/0001179110-11-013060#line-1","is_derivative":false,"issuer_cik":"0001372020","issuer_name":"Great Lakes Dredge & Dock CORP","issuer_ticker":"GLDD","issuer_name_source":null,"issuer_url":"/issuer/0001372020","owner_cik":"0001418692","owner_name":"Bittel Stephen","owner_url":"/insider/0001418692","role":"Director","officer_title":null,"security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":600.0,"shares_display":"600","price_per_share":4.44,"price_display":"4.44","price_state":"stated","total_value":2664.0,"total_display":"2,664.00","shares_owned_after":53247.0,"shares_owned_after_display":"53,247","ownership_form":"D","is_10b5_1":null,"transaction_date":"2011-09-06","filed_date":"2011-09-08","scope":"insider"},{"id":9241833,"accession":"0001179110-11-012212","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001179110-11-012212","line_url":"/filing/0001179110-11-012212#line-2","is_derivative":false,"issuer_cik":"0001372020","issuer_name":"Great Lakes Dredge & Dock CORP","issuer_ticker":"GLDD","issuer_name_source":null,"issuer_url":"/issuer/0001372020","owner_cik":"0001418692","owner_name":"Bittel Stephen","owner_url":"/insider/0001418692","role":"Director","officer_title":null,"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":4.53,"price_display":"4.53","price_state":"stated","total_value":22650.0,"total_display":"22,650.00","shares_owned_after":52647.0,"shares_owned_after_display":"52,647","ownership_form":"D","is_10b5_1":null,"transaction_date":"2011-08-08","filed_date":"2011-08-15","scope":"insider"},{"id":9241832,"accession":"0001179110-11-012212","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001179110-11-012212","line_url":"/filing/0001179110-11-012212#line-1","is_derivative":false,"issuer_cik":"0001372020","issuer_name":"Great Lakes Dredge & Dock CORP","issuer_ticker":"GLDD","issuer_name_source":null,"issuer_url":"/issuer/0001372020","owner_cik":"0001418692","owner_name":"Bittel Stephen","owner_url":"/insider/0001418692","role":"Director","officer_title":null,"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":4.51,"price_display":"4.51","price_state":"stated","total_value":9020.0,"total_display":"9,020.00","shares_owned_after":52647.0,"shares_owned_after_display":"52,647","ownership_form":"D","is_10b5_1":null,"transaction_date":"2011-08-08","filed_date":"2011-08-15","scope":"insider"},{"id":8984887,"accession":"0001179110-11-011958","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001179110-11-011958","line_url":"/filing/0001179110-11-011958#line-2","is_derivative":false,"issuer_cik":"0001372020","issuer_name":"Great Lakes Dredge & Dock CORP","issuer_ticker":"GLDD","issuer_name_source":null,"issuer_url":"/issuer/0001372020","owner_cik":"0001418692","owner_name":"Bittel Stephen","owner_url":"/insider/0001418692","role":"Director","officer_title":null,"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":4.53,"price_display":"4.53","price_state":"stated","total_value":22650.0,"total_display":"22,650.00","shares_owned_after":55647.0,"shares_owned_after_display":"55,647","ownership_form":"D","is_10b5_1":null,"transaction_date":"2011-08-08","filed_date":"2011-08-10","scope":"insider"},{"id":8984886,"accession":"0001179110-11-011958","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001179110-11-011958","line_url":"/filing/0001179110-11-011958#line-1","is_derivative":false,"issuer_cik":"0001372020","issuer_name":"Great Lakes Dredge & Dock CORP","issuer_ticker":"GLDD","issuer_name_source":null,"issuer_url":"/issuer/0001372020","owner_cik":"0001418692","owner_name":"Bittel Stephen","owner_url":"/insider/0001418692","role":"Director","officer_title":null,"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":4.51,"price_display":"4.51","price_state":"stated","total_value":22550.0,"total_display":"22,550.00","shares_owned_after":55647.0,"shares_owned_after_display":"55,647","ownership_form":"D","is_10b5_1":null,"transaction_date":"2011-08-08","filed_date":"2011-08-10","scope":"insider"},{"id":9101052,"accession":"0001179110-11-011856","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001179110-11-011856","line_url":"/filing/0001179110-11-011856#line-1","is_derivative":false,"issuer_cik":"0001372020","issuer_name":"Great Lakes Dredge & Dock CORP","issuer_ticker":"GLDD","issuer_name_source":null,"issuer_url":"/issuer/0001372020","owner_cik":"0001418692","owner_name":"Bittel Stephen","owner_url":"/insider/0001418692","role":"Director","officer_title":null,"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":4.996,"price_display":"5.00","price_state":"stated","total_value":49960.0,"total_display":"49,960.00","shares_owned_after":45647.0,"shares_owned_after_display":"45,647","ownership_form":"D","is_10b5_1":null,"transaction_date":"2011-08-04","filed_date":"2011-08-08","scope":"insider"}],"next_cursor":null,"ledger_fault":false,"count":{"value":13,"kind":"exact"},"open_market_only":false,"composition":{"kind":"exact","rows":[{"code":"P","label":"Open-market purchase","n":13,"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":13},"affiliations":[{"type":"issuer","type_label":"ISSUER","cik":"0001372020","name":"Great Lakes Dredge & Dock CORP","url":"/issuer/0001372020","role":"Director","n_filings":9,"first_seen":"2011-08-08","last_seen":"2011-10-03"}],"order_statement":"Newest transaction date first, id breaking the tie.","canonical_url":"https://ebomi.com/insider/0001418692","retrieved_at":"2026-08-21T16:10:14+00:00","coverage":{"filings":1505395,"transactions":4290787,"issuers":28597,"insiders":152303,"first_filed_date":"2003-06-30","last_filed_date":"2026-08-20","last_ingest":"2026-08-21T05:23:33.898496+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"}}