{"entity":{"type":"insider","cik":"0001358665","url":"/insider/0001358665","json_url":"/insider/0001358665.json","name":"Osteraas John","name_source":"as-filed","also_issuer":false,"cross_url":null},"coverage_statement":{"n_transactions":52,"n_filings":21,"first":"2007-04-25","last":"2016-02-12","span_basis":"filed_date"},"name_variants":[{"name":"Osteraas John","source":"filing","n_filings":21,"first_seen":"2007-04-25","last_seen":"2016-02-12"}],"transactions":[{"id":3156419,"accession":"0000851520-16-000178","txn_seq":4,"anchor":"line-4","filing_url":"/filing/0000851520-16-000178","line_url":"/filing/0000851520-16-000178#line-4","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":47.0,"shares_display":"47","price_per_share":47.4525,"price_display":"47.45","price_state":"stated","total_value":2230.2675,"total_display":"2,230.27","total_whole":"2,230","shares_owned_after":4353.0,"shares_owned_after_display":"4,353","ownership_form":"D","is_10b5_1":null,"transaction_date":"2016-01-01","filed_date":"2016-02-12","scope":"insider"},{"id":3156415,"accession":"0000851520-16-000178","txn_seq":3,"anchor":"line-3","filing_url":"/filing/0000851520-16-000178","line_url":"/filing/0000851520-16-000178#line-3","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":43.0,"shares_display":"43","price_per_share":43.605,"price_display":"43.60","price_state":"stated","total_value":1875.015,"total_display":"1,875.02","total_whole":"1,875","shares_owned_after":4306.0,"shares_owned_after_display":"4,306","ownership_form":"D","is_10b5_1":null,"transaction_date":"2015-10-02","filed_date":"2016-02-12","scope":"insider"},{"id":3156410,"accession":"0000851520-16-000178","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0000851520-16-000178","line_url":"/filing/0000851520-16-000178#line-2","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":53.0,"shares_display":"53","price_per_share":42.712,"price_display":"42.71","price_state":"stated","total_value":2263.736,"total_display":"2,263.74","total_whole":"2,264","shares_owned_after":4263.0,"shares_owned_after_display":"4,263","ownership_form":"D","is_10b5_1":null,"transaction_date":"2015-07-03","filed_date":"2016-02-12","scope":"insider"},{"id":8807047,"accession":"0000851520-15-000099","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0000851520-15-000099","line_url":"/filing/0000851520-15-000099#line-1","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":3692.0,"shares_display":"3,692","price_per_share":86.7421,"price_display":"86.74","price_state":"stated","total_value":320251.8332,"total_display":"320,251.83","total_whole":"320,252","shares_owned_after":2083.0,"shares_owned_after_display":"2,083","ownership_form":"D","is_10b5_1":null,"transaction_date":"2015-05-06","filed_date":"2015-05-08","scope":"insider"},{"id":3156404,"accession":"0000851520-16-000178","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0000851520-16-000178","line_url":"/filing/0000851520-16-000178#line-1","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":44.0,"shares_display":"44","price_per_share":42.313,"price_display":"42.31","price_state":"stated","total_value":1861.772,"total_display":"1,861.77","total_whole":"1,862","shares_owned_after":5819.0,"shares_owned_after_display":"5,819","ownership_form":"D","is_10b5_1":null,"transaction_date":"2015-04-02","filed_date":"2016-02-12","scope":"insider"},{"id":8707111,"accession":"0000851520-15-000033","txn_seq":4,"anchor":"line-4","filing_url":"/filing/0000851520-15-000033","line_url":"/filing/0000851520-15-000033#line-4","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":29.0,"shares_display":"29","price_per_share":77.0355,"price_display":"77.04","price_state":"stated","total_value":2234.0295,"total_display":"2,234.03","total_whole":"2,234","shares_owned_after":7881.0,"shares_owned_after_display":"7,881","ownership_form":"D","is_10b5_1":null,"transaction_date":"2015-01-02","filed_date":"2015-02-13","scope":"insider"},{"id":8707110,"accession":"0000851520-15-000033","txn_seq":3,"anchor":"line-3","filing_url":"/filing/0000851520-15-000033","line_url":"/filing/0000851520-15-000033#line-3","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":28.0,"shares_display":"28","price_per_share":68.343,"price_display":"68.34","price_state":"stated","total_value":1913.604,"total_display":"1,913.60","total_whole":"1,914","shares_owned_after":7852.0,"shares_owned_after_display":"7,852","ownership_form":"D","is_10b5_1":null,"transaction_date":"2014-10-03","filed_date":"2015-02-13","scope":"insider"},{"id":8707109,"accession":"0000851520-15-000033","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0000851520-15-000033","line_url":"/filing/0000851520-15-000033#line-2","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":31.0,"shares_display":"31","price_per_share":71.06,"price_display":"71.06","price_state":"stated","total_value":2202.86,"total_display":"2,202.86","total_whole":"2,203","shares_owned_after":7824.0,"shares_owned_after_display":"7,824","ownership_form":"D","is_10b5_1":null,"transaction_date":"2014-07-03","filed_date":"2015-02-13","scope":"insider"},{"id":8707108,"accession":"0000851520-15-000033","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0000851520-15-000033","line_url":"/filing/0000851520-15-000033#line-1","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":33.0,"shares_display":"33","price_per_share":69.027,"price_display":"69.03","price_state":"stated","total_value":2277.891,"total_display":"2,277.89","total_whole":"2,278","shares_owned_after":7793.0,"shares_owned_after_display":"7,793","ownership_form":"D","is_10b5_1":null,"transaction_date":"2014-04-04","filed_date":"2015-02-13","scope":"insider"},{"id":8352619,"accession":"0000851520-15-000046","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0000851520-15-000046","line_url":"/filing/0000851520-15-000046#line-1","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":4016.0,"shares_display":"4,016","price_per_share":86.8843,"price_display":"86.88","price_state":"stated","total_value":348927.3488,"total_display":"348,927.35","total_whole":"348,927","shares_owned_after":2669.0,"shares_owned_after_display":"2,669","ownership_form":"D","is_10b5_1":null,"transaction_date":"2014-02-26","filed_date":"2015-03-02","scope":"insider"},{"id":6247047,"accession":"0000851520-14-000014","txn_seq":4,"anchor":"line-4","filing_url":"/filing/0000851520-14-000014","line_url":"/filing/0000851520-14-000014#line-4","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":36.0,"shares_display":"36","price_per_share":73.511,"price_display":"73.51","price_state":"stated","total_value":2646.396,"total_display":"2,646.40","total_whole":"2,646","shares_owned_after":6685.0,"shares_owned_after_display":"6,685","ownership_form":"D","is_10b5_1":null,"transaction_date":"2014-01-03","filed_date":"2014-02-11","scope":"insider"},{"id":6247044,"accession":"0000851520-14-000014","txn_seq":3,"anchor":"line-3","filing_url":"/filing/0000851520-14-000014","line_url":"/filing/0000851520-14-000014#line-3","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":38.0,"shares_display":"38","price_per_share":67.868,"price_display":"67.87","price_state":"stated","total_value":2578.984,"total_display":"2,578.98","total_whole":"2,579","shares_owned_after":6649.0,"shares_owned_after_display":"6,649","ownership_form":"D","is_10b5_1":null,"transaction_date":"2013-09-27","filed_date":"2014-02-11","scope":"insider"},{"id":6247042,"accession":"0000851520-14-000014","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0000851520-14-000014","line_url":"/filing/0000851520-14-000014#line-2","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":40.0,"shares_display":"40","price_per_share":56.1545,"price_display":"56.15","price_state":"stated","total_value":2246.18,"total_display":"2,246.18","total_whole":"2,246","shares_owned_after":6611.0,"shares_owned_after_display":"6,611","ownership_form":"D","is_10b5_1":null,"transaction_date":"2013-06-28","filed_date":"2014-02-11","scope":"insider"},{"id":6247037,"accession":"0000851520-14-000014","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0000851520-14-000014","line_url":"/filing/0000851520-14-000014#line-1","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":52.0,"shares_display":"52","price_per_share":51.243,"price_display":"51.24","price_state":"stated","total_value":2664.636,"total_display":"2,664.64","total_whole":"2,665","shares_owned_after":6571.0,"shares_owned_after_display":"6,571","ownership_form":"D","is_10b5_1":null,"transaction_date":"2013-03-29","filed_date":"2014-02-11","scope":"insider"},{"id":4901617,"accession":"0000851520-13-000012","txn_seq":4,"anchor":"line-4","filing_url":"/filing/0000851520-13-000012","line_url":"/filing/0000851520-13-000012#line-4","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":44.0,"shares_display":"44","price_per_share":51.015,"price_display":"51.02","price_state":"stated","total_value":2244.66,"total_display":"2,244.66","total_whole":"2,245","shares_owned_after":5233.0,"shares_owned_after_display":"5,233","ownership_form":"D","is_10b5_1":null,"transaction_date":"2012-12-28","filed_date":"2013-02-08","scope":"insider"},{"id":2531111,"accession":"0000851520-12-000153","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0000851520-12-000153","line_url":"/filing/0000851520-12-000153#line-1","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":658.0,"shares_display":"658","price_per_share":50.8015,"price_display":"50.80","price_state":"stated","total_value":33427.387,"total_display":"33,427.39","total_whole":"33,427","shares_owned_after":5039.0,"shares_owned_after_display":"5,039","ownership_form":"D","is_10b5_1":null,"transaction_date":"2012-11-19","filed_date":"2012-11-20","scope":"insider"},{"id":4901612,"accession":"0000851520-13-000012","txn_seq":3,"anchor":"line-3","filing_url":"/filing/0000851520-13-000012","line_url":"/filing/0000851520-13-000012#line-3","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":48.0,"shares_display":"48","price_per_share":54.2355,"price_display":"54.24","price_state":"stated","total_value":2603.304,"total_display":"2,603.30","total_whole":"2,603","shares_owned_after":5847.0,"shares_owned_after_display":"5,847","ownership_form":"D","is_10b5_1":null,"transaction_date":"2012-09-28","filed_date":"2013-02-08","scope":"insider"},{"id":4901608,"accession":"0000851520-13-000012","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0000851520-13-000012","line_url":"/filing/0000851520-13-000012#line-2","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":45.0,"shares_display":"45","price_per_share":50.1885,"price_display":"50.19","price_state":"stated","total_value":2258.4825,"total_display":"2,258.48","total_whole":"2,258","shares_owned_after":5799.0,"shares_owned_after_display":"5,799","ownership_form":"D","is_10b5_1":null,"transaction_date":"2012-06-29","filed_date":"2013-02-08","scope":"insider"},{"id":3362391,"accession":"0000851520-12-000096","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0000851520-12-000096","line_url":"/filing/0000851520-12-000096#line-1","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":1902.0,"shares_display":"1,902","price_per_share":48.8101,"price_display":"48.81","price_state":"stated","total_value":92836.8102,"total_display":"92,836.81","total_whole":"92,837","shares_owned_after":5697.0,"shares_owned_after_display":"5,697","ownership_form":"D","is_10b5_1":null,"transaction_date":"2012-05-01","filed_date":"2012-05-04","scope":"insider"},{"id":4901601,"accession":"0000851520-13-000012","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0000851520-13-000012","line_url":"/filing/0000851520-13-000012#line-1","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":57.0,"shares_display":"57","price_per_share":46.094,"price_display":"46.09","price_state":"stated","total_value":2627.358,"total_display":"2,627.36","total_whole":"2,627","shares_owned_after":7656.0,"shares_owned_after_display":"7,656","ownership_form":"D","is_10b5_1":null,"transaction_date":"2012-03-30","filed_date":"2013-02-08","scope":"insider"},{"id":3428814,"accession":"0000851520-12-000038","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0000851520-12-000038","line_url":"/filing/0000851520-12-000038#line-1","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":795.0,"shares_display":"795","price_per_share":47.4,"price_display":"47.40","price_state":"stated","total_value":37683.0,"total_display":"37,683.00","total_whole":"37,683","shares_owned_after":6298.0,"shares_owned_after_display":"6,298","ownership_form":"D","is_10b5_1":null,"transaction_date":"2012-02-23","filed_date":"2012-02-27","scope":"insider"},{"id":3044967,"accession":"0000851520-12-000024","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0000851520-12-000024","line_url":"/filing/0000851520-12-000024#line-1","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":45.0,"shares_display":"45","price_per_share":48.1,"price_display":"48.10","price_state":"stated","total_value":2164.5,"total_display":"2,164.50","total_whole":"2,165","shares_owned_after":7093.0,"shares_owned_after_display":"7,093","ownership_form":"D","is_10b5_1":null,"transaction_date":"2012-02-10","filed_date":"2012-02-14","scope":"insider"},{"id":3149307,"accession":"0000851520-12-000016","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0000851520-12-000016","line_url":"/filing/0000851520-12-000016#line-1","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":900.0,"shares_display":"900","price_per_share":48.0,"price_display":"48.00","price_state":"stated","total_value":43200.0,"total_display":"43,200.00","total_whole":"43,200","shares_owned_after":7138.0,"shares_owned_after_display":"7,138","ownership_form":"D","is_10b5_1":null,"transaction_date":"2012-02-09","filed_date":"2012-02-10","scope":"insider"},{"id":2656991,"accession":"0000851520-12-000011","txn_seq":4,"anchor":"line-4","filing_url":"/filing/0000851520-12-000011","line_url":"/filing/0000851520-12-000011#line-4","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":51.0,"shares_display":"51","price_per_share":43.6715,"price_display":"43.67","price_state":"stated","total_value":2227.2465,"total_display":"2,227.25","total_whole":"2,227","shares_owned_after":8038.0,"shares_owned_after_display":"8,038","ownership_form":"D","is_10b5_1":null,"transaction_date":"2011-12-30","filed_date":"2012-02-09","scope":"insider"},{"id":9107267,"accession":"0000851520-11-000085","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0000851520-11-000085","line_url":"/filing/0000851520-11-000085#line-1","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":1091.0,"shares_display":"1,091","price_per_share":46.2092,"price_display":"46.21","price_state":"stated","total_value":50414.2372,"total_display":"50,414.24","total_whole":"50,414","shares_owned_after":7805.0,"shares_owned_after_display":"7,805","ownership_form":"D","is_10b5_1":null,"transaction_date":"2011-10-24","filed_date":"2011-10-25","scope":"insider"},{"id":2656988,"accession":"0000851520-12-000011","txn_seq":3,"anchor":"line-3","filing_url":"/filing/0000851520-12-000011","line_url":"/filing/0000851520-12-000011#line-3","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":67.0,"shares_display":"67","price_per_share":39.2635,"price_display":"39.26","price_state":"stated","total_value":2630.6545,"total_display":"2,630.65","total_whole":"2,631","shares_owned_after":9078.0,"shares_owned_after_display":"9,078","ownership_form":"D","is_10b5_1":null,"transaction_date":"2011-09-30","filed_date":"2012-02-09","scope":"insider"},{"id":9068610,"accession":"0000851520-11-000079","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0000851520-11-000079","line_url":"/filing/0000851520-11-000079#line-1","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":1000.0,"shares_display":"1,000","price_per_share":45.2701,"price_display":"45.27","price_state":"stated","total_value":45270.1,"total_display":"45,270.10","total_whole":"45,270","shares_owned_after":8896.0,"shares_owned_after_display":"8,896","ownership_form":"D","is_10b5_1":null,"transaction_date":"2011-07-25","filed_date":"2011-07-27","scope":"insider"},{"id":2656984,"accession":"0000851520-12-000011","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0000851520-12-000011","line_url":"/filing/0000851520-12-000011#line-2","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":54.0,"shares_display":"54","price_per_share":42.104,"price_display":"42.10","price_state":"stated","total_value":2273.616,"total_display":"2,273.62","total_whole":"2,274","shares_owned_after":10011.0,"shares_owned_after_display":"10,011","ownership_form":"D","is_10b5_1":null,"transaction_date":"2011-07-01","filed_date":"2012-02-09","scope":"insider"},{"id":8856138,"accession":"0000851520-11-000064","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0000851520-11-000064","line_url":"/filing/0000851520-11-000064#line-1","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":200.0,"shares_display":"200","price_per_share":40.492,"price_display":"40.49","price_state":"stated","total_value":8098.4,"total_display":"8,098.40","total_whole":"8,098","shares_owned_after":9896.0,"shares_owned_after_display":"9,896","ownership_form":"D","is_10b5_1":null,"transaction_date":"2011-05-24","filed_date":"2011-05-26","scope":"insider"},{"id":2656980,"accession":"0000851520-12-000011","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0000851520-12-000011","line_url":"/filing/0000851520-12-000011#line-1","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":61.0,"shares_display":"61","price_per_share":42.5125,"price_display":"42.51","price_state":"stated","total_value":2593.2625,"total_display":"2,593.26","total_whole":"2,593","shares_owned_after":10157.0,"shares_owned_after_display":"10,157","ownership_form":"D","is_10b5_1":null,"transaction_date":"2011-04-01","filed_date":"2012-02-09","scope":"insider"},{"id":9107266,"accession":"0000851520-11-000007","txn_seq":4,"anchor":"line-4","filing_url":"/filing/0000851520-11-000007","line_url":"/filing/0000851520-11-000007#line-4","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":63.0,"shares_display":"63","price_per_share":35.663,"price_display":"35.66","price_state":"stated","total_value":2246.769,"total_display":"2,246.77","total_whole":"2,247","shares_owned_after":6449.0,"shares_owned_after_display":"6,449","ownership_form":"D","is_10b5_1":null,"transaction_date":"2010-12-31","filed_date":"2011-02-15","scope":"insider"},{"id":9107265,"accession":"0000851520-11-000007","txn_seq":3,"anchor":"line-3","filing_url":"/filing/0000851520-11-000007","line_url":"/filing/0000851520-11-000007#line-3","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":84.0,"shares_display":"84","price_per_share":31.2265,"price_display":"31.23","price_state":"stated","total_value":2623.026,"total_display":"2,623.03","total_whole":"2,623","shares_owned_after":6386.0,"shares_owned_after_display":"6,386","ownership_form":"D","is_10b5_1":null,"transaction_date":"2010-10-01","filed_date":"2011-02-15","scope":"insider"},{"id":9107264,"accession":"0000851520-11-000007","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0000851520-11-000007","line_url":"/filing/0000851520-11-000007#line-2","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":74.0,"shares_display":"74","price_per_share":30.5425,"price_display":"30.54","price_state":"stated","total_value":2260.145,"total_display":"2,260.14","total_whole":"2,260","shares_owned_after":6302.0,"shares_owned_after_display":"6,302","ownership_form":"D","is_10b5_1":null,"transaction_date":"2010-07-02","filed_date":"2011-02-15","scope":"insider"},{"id":9107263,"accession":"0000851520-11-000007","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0000851520-11-000007","line_url":"/filing/0000851520-11-000007#line-1","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":96.0,"shares_display":"96","price_per_share":27.2935,"price_display":"27.29","price_state":"stated","total_value":2620.176,"total_display":"2,620.18","total_whole":"2,620","shares_owned_after":6228.0,"shares_owned_after_display":"6,228","ownership_form":"D","is_10b5_1":null,"transaction_date":"2010-04-02","filed_date":"2011-02-15","scope":"insider"},{"id":7251723,"accession":"0000851520-10-000005","txn_seq":4,"anchor":"line-4","filing_url":"/filing/0000851520-10-000005","line_url":"/filing/0000851520-10-000005#line-4","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":85.0,"shares_display":"85","price_per_share":26.448,"price_display":"26.45","price_state":"stated","total_value":2248.08,"total_display":"2,248.08","total_whole":"2,248","shares_owned_after":4501.0,"shares_owned_after_display":"4,501","ownership_form":"D","is_10b5_1":null,"transaction_date":"2010-01-01","filed_date":"2010-01-05","scope":"insider"},{"id":7251720,"accession":"0000851520-10-000005","txn_seq":3,"anchor":"line-3","filing_url":"/filing/0000851520-10-000005","line_url":"/filing/0000851520-10-000005#line-3","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":101.0,"shares_display":"101","price_per_share":26.087,"price_display":"26.09","price_state":"stated","total_value":2634.787,"total_display":"2,634.79","total_whole":"2,635","shares_owned_after":4416.0,"shares_owned_after_display":"4,416","ownership_form":"D","is_10b5_1":null,"transaction_date":"2009-10-02","filed_date":"2010-01-05","scope":"insider"},{"id":7251718,"accession":"0000851520-10-000005","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0000851520-10-000005","line_url":"/filing/0000851520-10-000005#line-2","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":96.0,"shares_display":"96","price_per_share":23.37,"price_display":"23.37","price_state":"stated","total_value":2243.52,"total_display":"2,243.52","total_whole":"2,244","shares_owned_after":4315.0,"shares_owned_after_display":"4,315","ownership_form":"D","is_10b5_1":null,"transaction_date":"2009-07-02","filed_date":"2010-01-05","scope":"insider"},{"id":7251715,"accession":"0000851520-10-000005","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0000851520-10-000005","line_url":"/filing/0000851520-10-000005#line-1","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":101.0,"shares_display":"101","price_per_share":26.03,"price_display":"26.03","price_state":"stated","total_value":2629.03,"total_display":"2,629.03","total_whole":"2,629","shares_owned_after":4219.0,"shares_owned_after_display":"4,219","ownership_form":"D","is_10b5_1":null,"transaction_date":"2009-04-03","filed_date":"2010-01-05","scope":"insider"},{"id":5732263,"accession":"0000851520-09-000006","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0000851520-09-000006","line_url":"/filing/0000851520-09-000006#line-2","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":3000.0,"shares_display":"3,000","price_per_share":19.6071,"price_display":"19.61","price_state":"stated","total_value":58821.3,"total_display":"58,821.30","total_whole":"58,821","shares_owned_after":3162.0,"shares_owned_after_display":"3,162","ownership_form":"D","is_10b5_1":null,"transaction_date":"2009-02-23","filed_date":"2009-02-24","scope":"insider"},{"id":5601577,"accession":"0000851520-09-000048","txn_seq":4,"anchor":"line-4","filing_url":"/filing/0000851520-09-000048","line_url":"/filing/0000851520-09-000048#line-4","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":91.0,"shares_display":"91","price_per_share":28.7755,"price_display":"28.78","price_state":"stated","total_value":2618.5705,"total_display":"2,618.57","total_whole":"2,619","shares_owned_after":3486.0,"shares_owned_after_display":"3,486","ownership_form":"D","is_10b5_1":null,"transaction_date":"2009-01-02","filed_date":"2009-03-24","scope":"insider"},{"id":5601576,"accession":"0000851520-09-000048","txn_seq":3,"anchor":"line-3","filing_url":"/filing/0000851520-09-000048","line_url":"/filing/0000851520-09-000048#line-3","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":74.0,"shares_display":"74","price_per_share":30.5425,"price_display":"30.54","price_state":"stated","total_value":2260.145,"total_display":"2,260.14","total_whole":"2,260","shares_owned_after":3395.0,"shares_owned_after_display":"3,395","ownership_form":"D","is_10b5_1":null,"transaction_date":"2008-09-26","filed_date":"2009-03-24","scope":"insider"},{"id":5601575,"accession":"0000851520-09-000048","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0000851520-09-000048","line_url":"/filing/0000851520-09-000048#line-2","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":81.0,"shares_display":"81","price_per_share":30.1055,"price_display":"30.11","price_state":"stated","total_value":2438.5455,"total_display":"2,438.55","total_whole":"2,439","shares_owned_after":3321.0,"shares_owned_after_display":"3,321","ownership_form":"D","is_10b5_1":null,"transaction_date":"2008-06-27","filed_date":"2009-03-24","scope":"insider"},{"id":5601574,"accession":"0000851520-09-000048","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0000851520-09-000048","line_url":"/filing/0000851520-09-000048#line-1","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":78.0,"shares_display":"78","price_per_share":30.78,"price_display":"30.78","price_state":"stated","total_value":2400.84,"total_display":"2,400.84","total_whole":"2,401","shares_owned_after":3240.0,"shares_owned_after_display":"3,240","ownership_form":"D","is_10b5_1":null,"transaction_date":"2008-03-28","filed_date":"2009-03-24","scope":"insider"},{"id":3588302,"accession":"0000851520-08-000021","txn_seq":7,"anchor":"line-7","filing_url":"/filing/0000851520-08-000021","line_url":"/filing/0000851520-08-000021#line-7","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":92.0,"shares_display":"92","price_per_share":25.973,"price_display":"25.97","price_state":"stated","total_value":2389.516,"total_display":"2,389.52","total_whole":"2,390","shares_owned_after":1675.0,"shares_owned_after_display":"1,675","ownership_form":"D","is_10b5_1":null,"transaction_date":"2007-12-28","filed_date":"2008-02-13","scope":"insider"},{"id":3588300,"accession":"0000851520-08-000021","txn_seq":6,"anchor":"line-6","filing_url":"/filing/0000851520-08-000021","line_url":"/filing/0000851520-08-000021#line-6","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":101.0,"shares_display":"101","price_per_share":23.8355,"price_display":"23.84","price_state":"stated","total_value":2407.3855,"total_display":"2,407.39","total_whole":"2,407","shares_owned_after":1583.0,"shares_owned_after_display":"1,583","ownership_form":"D","is_10b5_1":null,"transaction_date":"2007-09-28","filed_date":"2008-02-13","scope":"insider"},{"id":3588297,"accession":"0000851520-08-000021","txn_seq":5,"anchor":"line-5","filing_url":"/filing/0000851520-08-000021","line_url":"/filing/0000851520-08-000021#line-5","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":112.0,"shares_display":"112","price_per_share":21.2515,"price_display":"21.25","price_state":"stated","total_value":2380.168,"total_display":"2,380.17","total_whole":"2,380","shares_owned_after":1482.0,"shares_owned_after_display":"1,482","ownership_form":"D","is_10b5_1":null,"transaction_date":"2007-06-29","filed_date":"2008-02-13","scope":"insider"},{"id":8269163,"accession":"0000851520-07-000065","txn_seq":4,"anchor":"line-4","filing_url":"/filing/0000851520-07-000065","line_url":"/filing/0000851520-07-000065#line-4","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":3600.0,"shares_display":"3,600","price_per_share":22.781,"price_display":"22.78","price_state":"stated","total_value":82011.6,"total_display":"82,011.60","total_whole":"82,012","shares_owned_after":868.0,"shares_owned_after_display":"868","ownership_form":"D","is_10b5_1":null,"transaction_date":"2007-04-25","filed_date":"2007-04-25","scope":"insider"},{"id":8269156,"accession":"0000851520-07-000065","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0000851520-07-000065","line_url":"/filing/0000851520-07-000065#line-2","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":400.0,"shares_display":"400","price_per_share":22.75,"price_display":"22.75","price_state":"stated","total_value":9100.0,"total_display":"9,100.00","total_whole":"9,100","shares_owned_after":868.0,"shares_owned_after_display":"868","ownership_form":"D","is_10b5_1":null,"transaction_date":"2007-04-24","filed_date":"2007-04-25","scope":"insider"},{"id":3588295,"accession":"0000851520-08-000021","txn_seq":4,"anchor":"line-4","filing_url":"/filing/0000851520-08-000021","line_url":"/filing/0000851520-08-000021#line-4","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":114.0,"shares_display":"114","price_per_share":18.9525,"price_display":"18.95","price_state":"stated","total_value":2160.585,"total_display":"2,160.58","total_whole":"2,161","shares_owned_after":1370.0,"shares_owned_after_display":"1,370","ownership_form":"D","is_10b5_1":null,"transaction_date":"2007-03-30","filed_date":"2008-02-13","scope":"insider"},{"id":3588293,"accession":"0000851520-08-000021","txn_seq":3,"anchor":"line-3","filing_url":"/filing/0000851520-08-000021","line_url":"/filing/0000851520-08-000021#line-3","is_derivative":false,"issuer_cik":"0000851520","issuer_name":"EXPONENT INC","issuer_ticker":"EXPO","issuer_name_source":null,"issuer_url":"/issuer/0000851520","owner_cik":"0001358665","owner_name":"Osteraas John","owner_display_name":"Osteraas John","owner_url":"/insider/0001358665","role":"Officer (Group Vice President)","role_mark":"O","role_mark_label":"Officer (Group Vice President)","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"Group Vice President","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":120.0,"shares_display":"120","price_per_share":17.727,"price_display":"17.73","price_state":"stated","total_value":2127.24,"total_display":"2,127.24","total_whole":"2,127","shares_owned_after":1256.0,"shares_owned_after_display":"1,256","ownership_form":"D","is_10b5_1":null,"transaction_date":"2006-12-29","filed_date":"2008-02-13","scope":"insider"}],"collapsed":true,"next_cursor":"2006-12-29|3588293","ledger_fault":false,"count":{"value":52,"kind":"exact"},"open_market_only":false,"composition":{"kind":"exact","rows":[{"code":"P","label":"Open-market purchase","n":39,"open_market":true},{"code":"S","label":"Open-market sale","n":13,"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":52},"affiliations":[{"type":"issuer","type_label":"ISSUER","cik":"0000851520","name":"EXPONENT INC","url":"/issuer/0000851520","role":"Officer (Group Vice President)","n_filings":21,"first_seen":"2007-04-25","last_seen":"2016-02-12"}],"order_statement":"Newest transaction date first, id breaking the tie.","canonical_url":"https://ebomi.com/insider/0001358665","retrieved_at":"2026-08-24T19:48:44+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"}}