{"entity":{"type":"insider","cik":"0001595803","url":"/insider/0001595803","json_url":"/insider/0001595803.json","name":"M3C Holdings LLC","name_source":"as-filed","also_issuer":false,"cross_url":null},"coverage_statement":{"n_transactions":15,"n_filings":11,"first":"2015-02-25","last":"2015-05-13","span_basis":"filed_date"},"name_variants":[{"name":"M3C Holdings LLC","source":"filing","n_filings":11,"first_seen":"2015-02-25","last_seen":"2015-05-13"}],"transactions":[{"id":8800247,"accession":"0001140361-15-019399","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001140361-15-019399","line_url":"/filing/0001140361-15-019399#line-2","is_derivative":false,"issuer_cik":"0000720500","issuer_name":"AMTECH SYSTEMS INC","issuer_ticker":"ASYS","issuer_name_source":null,"issuer_url":"/issuer/0000720500","owner_cik":"0001595803","owner_name":"M3C Holdings LLC","owner_display_name":"M3C Holdings LLC","owner_url":"/insider/0001595803","role":"Ten percent owner","role_mark":"%","role_mark_label":"Ten percent owner","role_mark_generic":"Ten percent owner","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":17500.0,"shares_display":"17,500","price_per_share":10.8121,"price_display":"10.81","price_state":"stated","total_value":189211.75,"total_display":"189,211.75","total_whole":"189,212","shares_owned_after":263688.0,"shares_owned_after_display":"263,688","ownership_form":"D","is_10b5_1":null,"transaction_date":"2015-05-12","filed_date":"2015-05-13","scope":"insider"},{"id":8800246,"accession":"0001140361-15-019399","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001140361-15-019399","line_url":"/filing/0001140361-15-019399#line-1","is_derivative":false,"issuer_cik":"0000720500","issuer_name":"AMTECH SYSTEMS INC","issuer_ticker":"ASYS","issuer_name_source":null,"issuer_url":"/issuer/0000720500","owner_cik":"0001595803","owner_name":"M3C Holdings LLC","owner_display_name":"M3C Holdings LLC","owner_url":"/insider/0001595803","role":"Ten percent owner","role_mark":"%","role_mark_label":"Ten percent owner","role_mark_generic":"Ten percent owner","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":7500.0,"shares_display":"7,500","price_per_share":10.72,"price_display":"10.72","price_state":"stated","total_value":80400.0,"total_display":"80,400.00","total_whole":"80,400","shares_owned_after":246188.0,"shares_owned_after_display":"246,188","ownership_form":"D","is_10b5_1":null,"transaction_date":"2015-05-11","filed_date":"2015-05-13","scope":"insider"},{"id":8176960,"accession":"0001140361-15-019069","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001140361-15-019069","line_url":"/filing/0001140361-15-019069#line-1","is_derivative":false,"issuer_cik":"0000906193","issuer_name":"KEY TECHNOLOGY INC","issuer_ticker":"KTEC","issuer_name_source":null,"issuer_url":"/issuer/0000906193","owner_cik":"0001595803","owner_name":"M3C Holdings LLC","owner_display_name":"M3C Holdings LLC","owner_url":"/insider/0001595803","role":"Ten percent owner","role_mark":"%","role_mark_label":"Ten percent owner","role_mark_generic":"Ten percent owner","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":6000.0,"shares_display":"6,000","price_per_share":12.928,"price_display":"12.93","price_state":"stated","total_value":77568.0,"total_display":"77,568.00","total_whole":"77,568","shares_owned_after":132077.0,"shares_owned_after_display":"132,077","ownership_form":"D","is_10b5_1":null,"transaction_date":"2015-05-08","filed_date":"2015-05-12","scope":"insider"},{"id":8672031,"accession":"0001140361-15-018008","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001140361-15-018008","line_url":"/filing/0001140361-15-018008#line-1","is_derivative":false,"issuer_cik":"0000906193","issuer_name":"KEY TECHNOLOGY INC","issuer_ticker":"KTEC","issuer_name_source":null,"issuer_url":"/issuer/0000906193","owner_cik":"0001595803","owner_name":"M3C Holdings LLC","owner_display_name":"M3C Holdings LLC","owner_url":"/insider/0001595803","role":"Ten percent owner","role_mark":"%","role_mark_label":"Ten percent owner","role_mark_generic":"Ten percent owner","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":7500.0,"shares_display":"7,500","price_per_share":13.0,"price_display":"13.00","price_state":"stated","total_value":97500.0,"total_display":"97,500.00","total_whole":"97,500","shares_owned_after":126077.0,"shares_owned_after_display":"126,077","ownership_form":"D","is_10b5_1":null,"transaction_date":"2015-05-04","filed_date":"2015-05-06","scope":"insider"},{"id":8809534,"accession":"0001140361-15-017034","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001140361-15-017034","line_url":"/filing/0001140361-15-017034#line-1","is_derivative":false,"issuer_cik":"0000906193","issuer_name":"KEY TECHNOLOGY INC","issuer_ticker":"KTEC","issuer_name_source":null,"issuer_url":"/issuer/0000906193","owner_cik":"0001595803","owner_name":"M3C Holdings LLC","owner_display_name":"M3C Holdings LLC","owner_url":"/insider/0001595803","role":"Ten percent owner","role_mark":"%","role_mark_label":"Ten percent owner","role_mark_generic":"Ten percent owner","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":8229.0,"shares_display":"8,229","price_per_share":13.0828,"price_display":"13.08","price_state":"stated","total_value":107658.3612,"total_display":"107,658.36","total_whole":"107,658","shares_owned_after":118577.0,"shares_owned_after_display":"118,577","ownership_form":"D","is_10b5_1":null,"transaction_date":"2015-04-28","filed_date":"2015-04-30","scope":"insider"},{"id":8781355,"accession":"0001140361-15-016124","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001140361-15-016124","line_url":"/filing/0001140361-15-016124#line-1","is_derivative":false,"issuer_cik":"0000906193","issuer_name":"KEY TECHNOLOGY INC","issuer_ticker":"KTEC","issuer_name_source":null,"issuer_url":"/issuer/0000906193","owner_cik":"0001595803","owner_name":"M3C Holdings LLC","owner_display_name":"M3C Holdings LLC","owner_url":"/insider/0001595803","role":"Ten percent owner","role_mark":"%","role_mark_label":"Ten percent owner","role_mark_generic":"Ten percent owner","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":2200.0,"shares_display":"2,200","price_per_share":12.8498,"price_display":"12.85","price_state":"stated","total_value":28269.56,"total_display":"28,269.56","total_whole":"28,270","shares_owned_after":110348.0,"shares_owned_after_display":"110,348","ownership_form":"D","is_10b5_1":null,"transaction_date":"2015-04-20","filed_date":"2015-04-22","scope":"insider"},{"id":8790727,"accession":"0001140361-15-015862","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001140361-15-015862","line_url":"/filing/0001140361-15-015862#line-1","is_derivative":false,"issuer_cik":"0000906193","issuer_name":"KEY TECHNOLOGY INC","issuer_ticker":"KTEC","issuer_name_source":null,"issuer_url":"/issuer/0000906193","owner_cik":"0001595803","owner_name":"M3C Holdings LLC","owner_display_name":"M3C Holdings LLC","owner_url":"/insider/0001595803","role":"Ten percent owner","role_mark":"%","role_mark_label":"Ten percent owner","role_mark_generic":"Ten percent owner","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":5272.0,"shares_display":"5,272","price_per_share":13.0154,"price_display":"13.02","price_state":"stated","total_value":68617.1888,"total_display":"68,617.19","total_whole":"68,617","shares_owned_after":108148.0,"shares_owned_after_display":"108,148","ownership_form":"D","is_10b5_1":null,"transaction_date":"2015-04-16","filed_date":"2015-04-20","scope":"insider"},{"id":8060252,"accession":"0001140361-15-015621","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001140361-15-015621","line_url":"/filing/0001140361-15-015621#line-1","is_derivative":false,"issuer_cik":"0000906193","issuer_name":"KEY TECHNOLOGY INC","issuer_ticker":"KTEC","issuer_name_source":null,"issuer_url":"/issuer/0000906193","owner_cik":"0001595803","owner_name":"M3C Holdings LLC","owner_display_name":"M3C Holdings LLC","owner_url":"/insider/0001595803","role":"Ten percent owner","role_mark":"%","role_mark_label":"Ten percent owner","role_mark_generic":"Ten percent owner","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":3436.0,"shares_display":"3,436","price_per_share":13.018,"price_display":"13.02","price_state":"stated","total_value":44729.848,"total_display":"44,729.85","total_whole":"44,730","shares_owned_after":102876.0,"shares_owned_after_display":"102,876","ownership_form":"D","is_10b5_1":null,"transaction_date":"2015-04-14","filed_date":"2015-04-16","scope":"insider"},{"id":8646232,"accession":"0001140361-15-015364","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001140361-15-015364","line_url":"/filing/0001140361-15-015364#line-2","is_derivative":false,"issuer_cik":"0000906193","issuer_name":"KEY TECHNOLOGY INC","issuer_ticker":"KTEC","issuer_name_source":null,"issuer_url":"/issuer/0000906193","owner_cik":"0001595803","owner_name":"M3C Holdings LLC","owner_display_name":"M3C Holdings LLC","owner_url":"/insider/0001595803","role":"Ten percent owner","role_mark":"%","role_mark_label":"Ten percent owner","role_mark_generic":"Ten percent owner","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":4700.0,"shares_display":"4,700","price_per_share":12.9991,"price_display":"13.00","price_state":"stated","total_value":61095.77,"total_display":"61,095.77","total_whole":"61,096","shares_owned_after":99440.0,"shares_owned_after_display":"99,440","ownership_form":"D","is_10b5_1":null,"transaction_date":"2015-04-13","filed_date":"2015-04-14","scope":"insider"},{"id":8646231,"accession":"0001140361-15-015364","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001140361-15-015364","line_url":"/filing/0001140361-15-015364#line-1","is_derivative":false,"issuer_cik":"0000906193","issuer_name":"KEY TECHNOLOGY INC","issuer_ticker":"KTEC","issuer_name_source":null,"issuer_url":"/issuer/0000906193","owner_cik":"0001595803","owner_name":"M3C Holdings LLC","owner_display_name":"M3C Holdings LLC","owner_url":"/insider/0001595803","role":"Ten percent owner","role_mark":"%","role_mark_label":"Ten percent owner","role_mark_generic":"Ten percent owner","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":6701.0,"shares_display":"6,701","price_per_share":12.9939,"price_display":"12.99","price_state":"stated","total_value":87072.1239,"total_display":"87,072.12","total_whole":"87,072","shares_owned_after":94740.0,"shares_owned_after_display":"94,740","ownership_form":"D","is_10b5_1":null,"transaction_date":"2015-04-10","filed_date":"2015-04-14","scope":"insider"},{"id":9232918,"accession":"0001140361-15-012940","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001140361-15-012940","line_url":"/filing/0001140361-15-012940#line-2","is_derivative":false,"issuer_cik":"0001595803","issuer_name":"AMTECH SYSTEMS INC","issuer_ticker":"ASYS","issuer_name_source":null,"issuer_url":"/issuer/0001595803","owner_cik":"0001595803","owner_name":"M3C Holdings LLC","owner_display_name":"M3C Holdings LLC","owner_url":"/insider/0001595803","role":"Ten percent owner","role_mark":"%","role_mark_label":"Ten percent owner","role_mark_generic":"Ten percent owner","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":10651.0,"shares_display":"10,651","price_per_share":11.0318,"price_display":"11.03","price_state":"stated","total_value":117499.7018,"total_display":"117,499.70","total_whole":"117,500","shares_owned_after":238688.0,"shares_owned_after_display":"238,688","ownership_form":"D","is_10b5_1":null,"transaction_date":"2015-03-18","filed_date":"2015-03-23","scope":"insider"},{"id":8646170,"accession":"0001140361-15-012675","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001140361-15-012675","line_url":"/filing/0001140361-15-012675#line-2","is_derivative":false,"issuer_cik":"0000720500","issuer_name":"AMTECH SYSTEMS INC","issuer_ticker":"ASYS","issuer_name_source":null,"issuer_url":"/issuer/0000720500","owner_cik":"0001595803","owner_name":"M3C Holdings LLC","owner_display_name":"M3C Holdings LLC","owner_url":"/insider/0001595803","role":"Ten percent owner","role_mark":"%","role_mark_label":"Ten percent owner","role_mark_generic":"Ten percent owner","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":10651.0,"shares_display":"10,651","price_per_share":11.0318,"price_display":"11.03","price_state":"stated","total_value":117499.7018,"total_display":"117,499.70","total_whole":"117,500","shares_owned_after":227688.0,"shares_owned_after_display":"227,688","ownership_form":"D","is_10b5_1":null,"transaction_date":"2015-03-18","filed_date":"2015-03-19","scope":"insider"},{"id":9232919,"accession":"0001140361-15-012940","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001140361-15-012940","line_url":"/filing/0001140361-15-012940#line-1","is_derivative":false,"issuer_cik":"0001595803","issuer_name":"AMTECH SYSTEMS INC","issuer_ticker":"ASYS","issuer_name_source":null,"issuer_url":"/issuer/0001595803","owner_cik":"0001595803","owner_name":"M3C Holdings LLC","owner_display_name":"M3C Holdings LLC","owner_url":"/insider/0001595803","role":"Ten percent owner","role_mark":"%","role_mark_label":"Ten percent owner","role_mark_generic":"Ten percent owner","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":8787.0,"shares_display":"8,787","price_per_share":11.0072,"price_display":"11.01","price_state":"stated","total_value":96720.2664,"total_display":"96,720.27","total_whole":"96,720","shares_owned_after":228037.0,"shares_owned_after_display":"228,037","ownership_form":"D","is_10b5_1":null,"transaction_date":"2015-03-17","filed_date":"2015-03-23","scope":"insider"},{"id":8646168,"accession":"0001140361-15-012675","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001140361-15-012675","line_url":"/filing/0001140361-15-012675#line-1","is_derivative":false,"issuer_cik":"0000720500","issuer_name":"AMTECH SYSTEMS INC","issuer_ticker":"ASYS","issuer_name_source":null,"issuer_url":"/issuer/0000720500","owner_cik":"0001595803","owner_name":"M3C Holdings LLC","owner_display_name":"M3C Holdings LLC","owner_url":"/insider/0001595803","role":"Ten percent owner","role_mark":"%","role_mark_label":"Ten percent owner","role_mark_generic":"Ten percent owner","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":8787.0,"shares_display":"8,787","price_per_share":11.0072,"price_display":"11.01","price_state":"stated","total_value":96720.2664,"total_display":"96,720.27","total_whole":"96,720","shares_owned_after":217037.0,"shares_owned_after_display":"217,037","ownership_form":"D","is_10b5_1":null,"transaction_date":"2015-03-17","filed_date":"2015-03-19","scope":"insider"},{"id":8498191,"accession":"0001140361-15-008961","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001140361-15-008961","line_url":"/filing/0001140361-15-008961#line-1","is_derivative":false,"issuer_cik":"0000720500","issuer_name":"AMTECH SYSTEMS INC","issuer_ticker":"ASYS","issuer_name_source":null,"issuer_url":"/issuer/0000720500","owner_cik":"0001595803","owner_name":"M3C Holdings LLC","owner_display_name":"M3C Holdings LLC","owner_url":"/insider/0001595803","role":"Ten percent owner","role_mark":"%","role_mark_label":"Ten percent owner","role_mark_generic":"Ten percent owner","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":11000.0,"shares_display":"11,000","price_per_share":10.4,"price_display":"10.40","price_state":"stated","total_value":114400.0,"total_display":"114,400.00","total_whole":"114,400","shares_owned_after":219250.0,"shares_owned_after_display":"219,250","ownership_form":"D","is_10b5_1":null,"transaction_date":"2015-02-23","filed_date":"2015-02-25","scope":"insider"}],"collapsed":true,"next_cursor":null,"ledger_fault":false,"count":{"value":15,"kind":"exact"},"open_market_only":false,"composition":{"kind":"exact","rows":[{"code":"P","label":"Open-market purchase","n":15,"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":15},"affiliations":[{"type":"issuer","type_label":"ISSUER","cik":"0000720500","name":"AMTECH SYSTEMS INC","url":"/issuer/0000720500","role":"Ten percent owner","n_filings":4,"first_seen":"2015-02-25","last_seen":"2015-05-13"},{"type":"issuer","type_label":"ISSUER","cik":"0000906193","name":"KEY TECHNOLOGY INC","url":"/issuer/0000906193","role":"Ten percent owner","n_filings":7,"first_seen":"2015-04-14","last_seen":"2015-05-12"}],"order_statement":"Newest transaction date first, id breaking the tie.","canonical_url":"https://ebomi.com/insider/0001595803","retrieved_at":"2026-08-23T08:04:36+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"}}