{"entity":{"type":"insider","cik":"0001325718","url":"/insider/0001325718","json_url":"/insider/0001325718.json","name":"Koya Keizo","name_source":"as-filed","also_issuer":false,"cross_url":null},"coverage_statement":{"n_transactions":5,"n_filings":4,"first":"2009-08-26","last":"2012-03-05","span_basis":"filed_date"},"name_variants":[{"name":"Koya Keizo","source":"filing","n_filings":4,"first_seen":"2009-08-26","last_seen":"2012-03-05"}],"transactions":[{"id":2717876,"accession":"0001179110-12-004229","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001179110-12-004229","line_url":"/filing/0001179110-12-004229#line-1","is_derivative":false,"issuer_cik":"0001157601","issuer_name":"SYNTA PHARMACEUTICALS CORP","issuer_ticker":"SNTA","issuer_name_source":null,"issuer_url":"/issuer/0001157601","owner_cik":"0001325718","owner_name":"Koya Keizo","owner_url":"/insider/0001325718","role":"Officer (Sr. VP, Drug Development)","officer_title":"Sr. VP, Drug Development","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":6844.0,"shares_display":"6,844","price_per_share":4.703,"price_display":"4.70","price_state":"stated","total_value":32187.332,"total_display":"32,187.33","shares_owned_after":12999.0,"shares_owned_after_display":"12,999","ownership_form":"D","is_10b5_1":null,"transaction_date":"2012-03-01","filed_date":"2012-03-05","scope":"insider"},{"id":9059499,"accession":"0001179110-11-006920","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001179110-11-006920","line_url":"/filing/0001179110-11-006920#line-2","is_derivative":false,"issuer_cik":"0001157601","issuer_name":"SYNTA PHARMACEUTICALS CORP","issuer_ticker":"SNTA","issuer_name_source":null,"issuer_url":"/issuer/0001157601","owner_cik":"0001325718","owner_name":"Koya Keizo","owner_url":"/insider/0001325718","role":"Officer (Sr. VP, Drug Development)","officer_title":"Sr. VP, Drug Development","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":10000.0,"shares_display":"10,000","price_per_share":6.0,"price_display":"6.00","price_state":"stated","total_value":60000.0,"total_display":"60,000.00","shares_owned_after":19843.0,"shares_owned_after_display":"19,843","ownership_form":"D","is_10b5_1":null,"transaction_date":"2011-04-25","filed_date":"2011-04-26","scope":"insider"},{"id":9059498,"accession":"0001179110-11-006920","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001179110-11-006920","line_url":"/filing/0001179110-11-006920#line-1","is_derivative":false,"issuer_cik":"0001157601","issuer_name":"SYNTA PHARMACEUTICALS CORP","issuer_ticker":"SNTA","issuer_name_source":null,"issuer_url":"/issuer/0001157601","owner_cik":"0001325718","owner_name":"Koya Keizo","owner_url":"/insider/0001325718","role":"Officer (Sr. VP, Drug Development)","officer_title":"Sr. VP, Drug Development","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":10000.0,"shares_display":"10,000","price_per_share":5.6,"price_display":"5.60","price_state":"stated","total_value":56000.0,"total_display":"56,000.00","shares_owned_after":29843.0,"shares_owned_after_display":"29,843","ownership_form":"D","is_10b5_1":null,"transaction_date":"2011-04-20","filed_date":"2011-04-26","scope":"insider"},{"id":9121008,"accession":"0001179110-11-004052","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001179110-11-004052","line_url":"/filing/0001179110-11-004052#line-2","is_derivative":false,"issuer_cik":"0001157601","issuer_name":"SYNTA PHARMACEUTICALS CORP","issuer_ticker":"SNTA","issuer_name_source":null,"issuer_url":"/issuer/0001157601","owner_cik":"0001325718","owner_name":"Koya Keizo","owner_url":"/insider/0001325718","role":"Officer (Sr. VP, Drug Development)","officer_title":"Sr. VP, Drug Development","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":18270.0,"shares_display":"18,270","price_per_share":5.23,"price_display":"5.23","price_state":"stated","total_value":95552.1,"total_display":"95,552.10","shares_owned_after":32999.0,"shares_owned_after_display":"32,999","ownership_form":"D","is_10b5_1":null,"transaction_date":"2011-03-01","filed_date":"2011-03-03","scope":"insider"},{"id":5831716,"accession":"0001179110-09-012557","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001179110-09-012557","line_url":"/filing/0001179110-09-012557#line-1","is_derivative":false,"issuer_cik":"0001157601","issuer_name":"SYNTA PHARMACEUTICALS CORP","issuer_ticker":"SNTA","issuer_name_source":null,"issuer_url":"/issuer/0001157601","owner_cik":"0001325718","owner_name":"Koya Keizo","owner_url":"/insider/0001325718","role":"Officer (Sr. VP, Drug Development)","officer_title":"Sr. VP, Drug Development","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":2.8434,"price_display":"2.84","price_state":"stated","total_value":28434.0,"total_display":"28,434.00","shares_owned_after":43045.0,"shares_owned_after_display":"43,045","ownership_form":"D","is_10b5_1":null,"transaction_date":"2009-08-24","filed_date":"2009-08-26","scope":"insider"}],"next_cursor":null,"ledger_fault":false,"count":{"value":5,"kind":"exact"},"open_market_only":false,"composition":{"kind":"exact","rows":[{"code":"P","label":"Open-market purchase","n":1,"open_market":true},{"code":"S","label":"Open-market sale","n":4,"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":5},"affiliations":[{"type":"issuer","type_label":"ISSUER","cik":"0001157601","name":"SYNTA PHARMACEUTICALS CORP","url":"/issuer/0001157601","role":"Officer (Sr. VP, Drug Development)","n_filings":4,"first_seen":"2009-08-26","last_seen":"2012-03-05"}],"order_statement":"Newest transaction date first, id breaking the tie.","canonical_url":"https://ebomi.com/insider/0001325718","retrieved_at":"2026-08-22T03:11:21+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"}}