{"entity":{"type":"insider","cik":"0001362590","url":"/insider/0001362590","json_url":"/insider/0001362590.json","name":"Lasswell Mark A","name_source":"as-filed","also_issuer":false,"cross_url":null},"coverage_statement":{"n_transactions":13,"n_filings":12,"first":"2006-06-12","last":"2009-06-05","span_basis":"filed_date"},"name_variants":[{"name":"Lasswell Mark A","source":"filing","n_filings":12,"first_seen":"2006-06-12","last_seen":"2009-06-05"}],"transactions":[{"id":5675980,"accession":"0000777491-09-000057","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0000777491-09-000057","line_url":"/filing/0000777491-09-000057#line-1","is_derivative":false,"issuer_cik":"0000777491","issuer_name":"CH2M HILL COMPANIES LTD","issuer_ticker":"NONE","issuer_name_source":null,"issuer_url":"/issuer/0000777491","owner_cik":"0001362590","owner_name":"Lasswell Mark A","owner_display_name":"Lasswell Mark A","owner_url":"/insider/0001362590","role":"Director, Officer (Executive Officer)","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Executive Officer","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":245.851,"shares_display":"245.85","price_per_share":32.54,"price_display":"32.54","price_state":"stated","total_value":7999.99154,"total_display":"7,999.99","total_whole":"8,000","shares_owned_after":59382.302,"shares_owned_after_display":"59,382.30","ownership_form":"D","is_10b5_1":null,"transaction_date":"2009-06-05","filed_date":"2009-06-05","scope":"insider"},{"id":5592222,"accession":"0000777491-09-000028","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0000777491-09-000028","line_url":"/filing/0000777491-09-000028#line-2","is_derivative":false,"issuer_cik":"0000777491","issuer_name":"CH2M HILL COMPANIES LTD","issuer_ticker":"NONE","issuer_name_source":null,"issuer_url":"/issuer/0000777491","owner_cik":"0001362590","owner_name":"Lasswell Mark A","owner_display_name":"Lasswell Mark A","owner_url":"/insider/0001362590","role":"Director, Officer (Executive Officer)","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Executive Officer","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":214.362,"shares_display":"214.36","price_per_share":31.1,"price_display":"31.10","price_state":"stated","total_value":6666.6582,"total_display":"6,666.66","total_whole":"6,667","shares_owned_after":52339.408,"shares_owned_after_display":"52,339.41","ownership_form":"D","is_10b5_1":null,"transaction_date":"2009-03-13","filed_date":"2009-03-16","scope":"insider"},{"id":3896902,"accession":"0000777491-08-000102","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0000777491-08-000102","line_url":"/filing/0000777491-08-000102#line-1","is_derivative":false,"issuer_cik":"0000777491","issuer_name":"CH2M HILL COMPANIES LTD","issuer_ticker":"NONE","issuer_name_source":null,"issuer_url":"/issuer/0000777491","owner_cik":"0001362590","owner_name":"Lasswell Mark A","owner_display_name":"Lasswell Mark A","owner_url":"/insider/0001362590","role":"Director, Officer (Executive Officer)","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Executive Officer","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":222.331,"shares_display":"222.33","price_per_share":30.77,"price_display":"30.77","price_state":"stated","total_value":6841.12487,"total_display":"6,841.12","total_whole":"6,841","shares_owned_after":52125.046,"shares_owned_after_display":"52,125.05","ownership_form":"D","is_10b5_1":null,"transaction_date":"2008-12-05","filed_date":"2008-12-08","scope":"insider"},{"id":3471378,"accession":"0000777491-08-000086","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0000777491-08-000086","line_url":"/filing/0000777491-08-000086#line-1","is_derivative":false,"issuer_cik":"0000777491","issuer_name":"CH2M HILL COMPANIES LTD","issuer_ticker":"NONE","issuer_name_source":null,"issuer_url":"/issuer/0000777491","owner_cik":"0001362590","owner_name":"Lasswell Mark A","owner_display_name":"Lasswell Mark A","owner_url":"/insider/0001362590","role":"Director, Officer (Executive Officer)","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Executive Officer","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":293.064,"shares_display":"293.06","price_per_share":30.71,"price_display":"30.71","price_state":"stated","total_value":8999.99544,"total_display":"9,000.00","total_whole":"9,000","shares_owned_after":49777.715,"shares_owned_after_display":"49,777.72","ownership_form":"D","is_10b5_1":null,"transaction_date":"2008-09-12","filed_date":"2008-09-16","scope":"insider"},{"id":4001508,"accession":"0000777491-08-000069","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0000777491-08-000069","line_url":"/filing/0000777491-08-000069#line-1","is_derivative":false,"issuer_cik":"0000777491","issuer_name":"CH2M HILL COMPANIES LTD","issuer_ticker":"NONE","issuer_name_source":null,"issuer_url":"/issuer/0000777491","owner_cik":"0001362590","owner_name":"Lasswell Mark A","owner_display_name":"Lasswell Mark A","owner_url":"/insider/0001362590","role":"Director, Officer (Executive Officer)","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Executive Officer","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":191.632,"shares_display":"191.63","price_per_share":31.31,"price_display":"31.31","price_state":"stated","total_value":5999.99792,"total_display":"6,000.00","total_whole":"6,000","shares_owned_after":49484.651,"shares_owned_after_display":"49,484.65","ownership_form":"D","is_10b5_1":null,"transaction_date":"2008-06-06","filed_date":"2008-06-09","scope":"insider"},{"id":3785586,"accession":"0000777491-08-000043","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0000777491-08-000043","line_url":"/filing/0000777491-08-000043#line-1","is_derivative":false,"issuer_cik":"0000777491","issuer_name":"CH2M HILL COMPANIES LTD","issuer_ticker":"NONE","issuer_name_source":null,"issuer_url":"/issuer/0000777491","owner_cik":"0001362590","owner_name":"Lasswell Mark A","owner_display_name":"Lasswell Mark A","owner_url":"/insider/0001362590","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":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":208.395,"shares_display":"208.40","price_per_share":30.32,"price_display":"30.32","price_state":"stated","total_value":6318.5364,"total_display":"6,318.54","total_whole":"6,319","shares_owned_after":49293.019,"shares_owned_after_display":"49,293.02","ownership_form":"D","is_10b5_1":null,"transaction_date":"2008-03-07","filed_date":"2008-03-10","scope":"insider"},{"id":7166362,"accession":"0000777491-07-000080","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0000777491-07-000080","line_url":"/filing/0000777491-07-000080","is_derivative":false,"issuer_cik":"0000777491","issuer_name":"CH2M HILL COMPANIES LTD","issuer_ticker":"NONE","issuer_name_source":null,"issuer_url":"/issuer/0000777491","owner_cik":"0001362590","owner_name":"Lasswell Mark A","owner_display_name":"Lasswell Mark A","owner_url":"/insider/0001362590","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":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":1226.175,"shares_display":"1,226.18","price_per_share":27.94,"price_display":"27.94","price_state":"stated","total_value":34259.3295,"total_display":"34,259.33","total_whole":"34,259","shares_owned_after":45498.624,"shares_owned_after_display":"45,498.62","ownership_form":"D","is_10b5_1":null,"transaction_date":"2007-12-07","filed_date":"2007-12-11","scope":"insider","n_lines":2},{"id":7331030,"accession":"0000777491-07-000070","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0000777491-07-000070","line_url":"/filing/0000777491-07-000070#line-1","is_derivative":false,"issuer_cik":"0000777491","issuer_name":"CH2M HILL COMPANIES LTD","issuer_ticker":"NONE","issuer_name_source":null,"issuer_url":"/issuer/0000777491","owner_cik":"0001362590","owner_name":"Lasswell Mark A","owner_display_name":"Lasswell Mark A","owner_url":"/insider/0001362590","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":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":323.074,"shares_display":"323.07","price_per_share":22.82,"price_display":"22.82","price_state":"stated","total_value":7372.54868,"total_display":"7,372.55","total_whole":"7,373","shares_owned_after":44272.449,"shares_owned_after_display":"44,272.45","ownership_form":"D","is_10b5_1":null,"transaction_date":"2007-09-07","filed_date":"2007-09-11","scope":"insider"},{"id":8002042,"accession":"0000777491-07-000059","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0000777491-07-000059","line_url":"/filing/0000777491-07-000059#line-1","is_derivative":false,"issuer_cik":"0000777491","issuer_name":"CH2M HILL COMPANIES LTD","issuer_ticker":"NONE","issuer_name_source":null,"issuer_url":"/issuer/0000777491","owner_cik":"0001362590","owner_name":"Lasswell Mark A","owner_display_name":"Lasswell Mark A","owner_url":"/insider/0001362590","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":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":302.216,"shares_display":"302.22","price_per_share":20.91,"price_display":"20.91","price_state":"stated","total_value":6319.33656,"total_display":"6,319.34","total_whole":"6,319","shares_owned_after":43949.375,"shares_owned_after_display":"43,949.38","ownership_form":"D","is_10b5_1":null,"transaction_date":"2007-06-08","filed_date":"2007-06-12","scope":"insider"},{"id":7055054,"accession":"0000777491-07-000026","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0000777491-07-000026","line_url":"/filing/0000777491-07-000026#line-1","is_derivative":false,"issuer_cik":"0000777491","issuer_name":"CH2M HILL COMPANIES LTD","issuer_ticker":"NONE","issuer_name_source":null,"issuer_url":"/issuer/0000777491","owner_cik":"0001362590","owner_name":"Lasswell Mark A","owner_display_name":"Lasswell Mark A","owner_url":"/insider/0001362590","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":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":160.961,"shares_display":"160.96","price_per_share":19.63,"price_display":"19.63","price_state":"stated","total_value":3159.66443,"total_display":"3,159.66","total_whole":"3,160","shares_owned_after":43647.159,"shares_owned_after_display":"43,647.16","ownership_form":"D","is_10b5_1":null,"transaction_date":"2007-03-09","filed_date":"2007-03-09","scope":"insider"},{"id":4861284,"accession":"0000777491-06-000092","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0000777491-06-000092","line_url":"/filing/0000777491-06-000092#line-1","is_derivative":false,"issuer_cik":"0000777491","issuer_name":"CH2M HILL COMPANIES LTD","issuer_ticker":"NONE","issuer_name_source":null,"issuer_url":"/issuer/0000777491","owner_cik":"0001362590","owner_name":"Lasswell Mark A","owner_display_name":"Lasswell Mark A","owner_url":"/insider/0001362590","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":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":396.449,"shares_display":"396.45","price_per_share":18.7,"price_display":"18.70","price_state":"stated","total_value":7413.5963,"total_display":"7,413.60","total_whole":"7,414","shares_owned_after":40676.198,"shares_owned_after_display":"40,676.20","ownership_form":"D","is_10b5_1":null,"transaction_date":"2006-09-08","filed_date":"2006-09-12","scope":"insider"},{"id":3873602,"accession":"0000777491-06-000074","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0000777491-06-000074","line_url":"/filing/0000777491-06-000074#line-1","is_derivative":false,"issuer_cik":"0000777491","issuer_name":"CH2M HILL COMPANIES LTD","issuer_ticker":"NONE","issuer_name_source":null,"issuer_url":"/issuer/0000777491","owner_cik":"0001362590","owner_name":"Lasswell Mark A","owner_display_name":"Lasswell Mark A","owner_url":"/insider/0001362590","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":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":400.606,"shares_display":"400.61","price_per_share":17.83,"price_display":"17.83","price_state":"stated","total_value":7142.80498,"total_display":"7,142.80","total_whole":"7,143","shares_owned_after":40279.749,"shares_owned_after_display":"40,279.75","ownership_form":"D","is_10b5_1":null,"transaction_date":"2006-06-09","filed_date":"2006-06-12","scope":"insider"}],"collapsed":true,"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":"0000777491","name":"CH2M HILL COMPANIES LTD","url":"/issuer/0000777491","role":"Director, Officer (Executive Officer)","n_filings":12,"first_seen":"2006-06-12","last_seen":"2009-06-05"}],"order_statement":"Newest transaction date first, id breaking the tie.","canonical_url":"https://ebomi.com/insider/0001362590","retrieved_at":"2026-08-25T15:34:40+00:00","coverage":{"filings":1506293,"transactions":4290787,"issuers":28597,"insiders":152303,"first_filed_date":"2003-06-30","last_filed_date":"2026-08-24","last_ingest":"2026-08-25T05:24:19.374141+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"}}