| 1976-09 |
（有）佐藤建築設計事務所を設立 |
| 1976-09 |
Established Sato Architectural Design Office |
| 1985-04 |
施工図作図のため海外ネットワーク形成へ着手 |
| 1985-04 |
Worked on the development of overseas network to prepare working drawings |
| 1987-04 |
海外設計事務所に施工図の発注を開始 |
| 1987-04 |
Began placing orders for working drawings to an overseas architectural design |
| 1991-03 |
建設技術者派遣事業を開始 |
| 1991-03 |
Launched a Construction engineer temporary staffing business |
| 1997-08 |
障がい者雇用を行う共生産業（株）（現・当社）設立 |
| 1997-08 |
Kyousei Sangyou Inc. established to employ persons with disabilities |
| 2003-09 |
東京証券取引所JASDAQに上場 |
| 2003-09 |
Stock listing (TSE JASDAQ) |
| 2004-11 |
人材サービス事業を開始し、（株）トラストワークスサンエーへ社名変更 |
| 2004-11 |
Staffing services business launched and company name changed to Trust Works Sanei Inc. |
| 2005-04 |
組織をホールディングス化 事業継承会社として（株）夢真を設立 |
| 2005-04 |
Became a holding company : Established Yumeshin Co., Ltd. as a successor company |
| 2005-06 |
技術者派遣を行う（株）トラスト・テックを子会社化 |
| 2005-06 |
Engineer staffing services company Trust Tech Inc. acquired and made into subsidiary |
| 2006-11 |
（株）トラストワークスへ社名変更 |
| 2006-11 |
Company name changed to Trust Works Inc. |
| 2007-06 |
東京証券取引所JASDAQに上場 |
| 2007-06 |
Listed on JASDAQ Securities Exchange |
| 2007-10 |
（株）夢真ホールディングスと（株）夢真が合併 |
| 2007-10 |
Yumeshin Holdings Co., Ltd. and Yumeshin Co., Ltd. merged |
| 2008-10 |
子会社の（株）トラスト・テックを吸収合併し、（株）トラストワークス（現・当社）は（株）トラスト・テックへ社名変更 |
| 2008-10 |
Merged with subsidiary Trust Tech Inc. in an absorption-type merger and company name changed to Trust Tech Inc. |
| 2009-03 |
製造派遣を行う（株）TTMを子会社化 |
| 2009-03 |
Manufacturing staffing services company TTM Inc. acquired and made into subsidiary |
| 2010-06 |
香港虎斯科技有限公司（HKTT Limited）を子会社化 |
| 2010-06 |
KTT Limited acquired and made into subsidiary |
| 2011-05 |
（株）フルキャストテクノロジー（現・（株）夢テクノロジー）を子会社化 |
| 2011-05 |
Made Yume Technology Co., Ltd. a subsidiary |
| 2012-01 |
採用サテライト「夢探索カフェ」の展開スタート |
| 2012-01 |
Launch of "Dream Exploration Cafe" as a hired satellite |
| 2013-08 |
東京証券取引所市場第2部へ市場変更 |
| 2013-08 |
Listed on Second Section of Tokyo Stock Exchange |
| 2013-12 |
東京証券取引所市場第1部へ市場変更 |
| 2013-12 |
Listed on First Section of Tokyo Stock Exchange |
| 2014-10 |
グループ稼動技術者数2,000名突破 |
| 2014-10 |
Number of Group engineers at work exceeded 2,000 |
| 2014-11 |
本社を東京都 丸の内へ移転 |
| 2014-11 |
Relocated headquarters to Marunouchi, Tokyo |
| 2015-03 |
子会社香港虎斯科技有限公司（HKTT Limited）がインドネシア駐在員事務所を設立 |
| 2015-03 |
Indonesia representative office established by subsidiary HKTT Limited |
| 2015-07 |
（株）テクノパワーよりテクニカルソリューション事業部を譲受 （株）フリーダムを子会社化 |
| 2015-07 |
Technical Solutions Division of Technology Power Corporation transferred to Trust Tech Inc.; Freedom Co., Ltd. acquired and made into subsidiary |
| 2015-08 |
グループ稼動技術者数3,000名突破 |
| 2015-08 |
Number of Group engineers at work exceeded 3,000 |
| 2015-10 |
（株）トラィアル（旧社名：カナモトエンジニアリング）を子会社化 |
| 2015-10 |
Trust Ideal Inc. (formerly Kanamoto Engineering Co., Ltd.) acquired and made into subsidiary |
| 2016-08 |
英国人材派遣会社MTrec Limitedを子会社化 |
| 2016-08 |
UK-based staffing services company MTrec Limited acquired and made into subsidiary |
| 2016-09 |
子会社香港虎斯科技有限公司（HKTT Limited）が上海現地法人を設立 |
| 2016-09 |
Shanghai local subsidiary established by subsidiary HKTT Limited |
| 2016-10 |
子会社（株）トラィアルを吸収合併 山東省聯信智達人力資源有限公司を合弁で設立 |
| 2016-10 |
Merged with subsidiary Trust Ideal Inc. in an absorption-type merger; Shandong Trust-Bridge Human Resource Inc. established as joint venture |
| 2016-11 |
グループ稼動技術者数4,000名突破 |
| 2016-11 |
Number of Group engineers at work exceeded 4,000 |
| 2017-03 |
（株）フュージョンアイを子会社化 |
| 2017-03 |
Special subsidiary name changed to Trust Tech With Inc.; FUSIONi Co., Ltd. acquired and made into subsidiary |
| 2017-07 |
グループ稼動技術者数5,000名突破 |
| 2017-07 |
Number of Group engineers at work exceeded 5,000 |
| 2017-11 |
広州点米信科人力資源有限公司を合弁で設立 |
| 2017-11 |
Guangzhou Trust Dianmi Human Resources Inc. established as joint venture |
| 2017-12 |
英国人材派遣会社Gap Personnel Holdings Limitedを子会社化 |
| 2017-12 |
グループ稼動技術者数6,000名突破 |
| 2017-12 |
Number of Group engineers at work exceeded 6,000 |
| 2018-01 |
子会社（株）フュージョンアイが当社のIT・ソフト領域の事業を承継し、（株）トラスト・アイパワーズに社名変更 |
| 2018-01 |
IT and software services business of Trust Tech Inc. transferred to subsidiary FUSIONi Co., Ltd. and company name changed to Trust iPowers Inc. |
| 2018-04 |
子会社（株）フリーダム傘下の事業会社（（株）システムOne、（株）イーシーエス等）を統合し、（株）トラスト・ネクストソリューションズに社名変更 |
| 2018-04 |
Subsidiary Freedom Co., Ltd. integrated with its group companies (System One Co., Ltd. and ECS Co., Ltd., etc.) and company name changed to Trust NEXT Solutions Co., Ltd. |
| 2018-06 |
株主優待制度の新設を発表 |
| 2018-06 |
Announced the establishment of a shareholder benefit program |
| 2018-08 |
英国人材派遣会社Quattro Group Holdings Limited（後にGap Personnel Holdings Limitedに統合）を子会社化 |
| 2018-08 |
Staffing services company Quattro Group Holdings Limited of UK acquired and made into subsidiary |
| 2018-09 |
グループ稼動技術者数7,000名突破 （株）夢グローバル設立 |
| 2018-09 |
Number of Group engineers at work exceeded 7,000 |
| 2018-09 |
Established YUME GLOBAL Co., Ltd. |
| 2018-10 |
ネプラス（株）を完全子会社化 |
| 2018-10 |
Made Neplus Co., Ltd. a wholly owned subsidiary |
| 2018-10 |
Made P3OPLE4U, inc. a subsidiary |
| 2019-01 |
ベトナムの大手人材派遣会社を傘下に持つL&A INVESTMENT CORPORATIONの株式を取得し持分法適用会社に |
| 2019-01 |
（株）夢テクノロジーを完全子会社化 |
| 2019-01 |
Shares of L&A Investment Corporation, the parent company of a major Vietnamese staffing company, acquired and the corporation made into equity-method affiliate |
| 2019-01 |
Made Yume Technology Co., Ltd. a wholly owned subsidiary |
| 2019-04 |
（株）インフォメーションポートを子会社化 （株）侍（現・（株）SAMURAI）を子会社化 |
| 2019-04 |
Made Information Port Co., Ltd. a subsidiary |
| 2019-04 |
Made Samurai, Inc a subsidiary |
| 2019-05 |
グループ稼動技術者数8,000名突破 |
| 2019-05 |
Number of Group engineers at work exceeded 8,000 |
| 2019-07 |
子会社（株）トラスト・アイパワーズと子会社（株）トラスト・ネクストソリューションズが合併し、（株）ビーネックスソリューションズに社名変更 |
| 2019-07 |
ガレネット（株）を子会社化 |
| 2019-07 |
Subsidiary Trust NEXT Solutions Co., Ltd. name changed to BeNEXT Solutions Inc. |
| 2019-07 |
Made Garenet Co., Ltd. a subsidiary |
| 2019-10 |
純粋持株会社体制へ移行 |
| 2019-10 |
Transition to a pure holding company structure |
| 2019-11 |
（株）アクシス・クリエイトを子会社化 |
| 2019-11 |
Axis Create Inc., Faith Inc., and Axis Human Development Inc. acquired and made into subsidiaries |
| 2019-12 |
グループ稼動技術者9,000名突破 |
| 2019-12 |
Number of Group engineers at work exceeded 9,000 |
| 2020-01 |
Transitioned to holding company structure and name changed to BeNEXT Group Inc. : Engineer staffing services business transferred to subsidiary BeNEXT Technologies Inc. (established in July 2019) : Subsidiary TTM Inc. name changed to BeNEXT Partners Inc. : Trust Tech With Inc. name changed to BeNEXT With Inc. |
| 2020-04 |
（株）クルンテープと三立機械設計（株）が合併 （株）夢プロエンジへ名称変更 （株）アローインフォメーションを子会社化 |
| 2020-04 |
Krung Tape Co., Ltd. and Sanritsu Machinery Design Co., Ltd. merged and change the name to YUME PROENG Co., Ltd. |
| 2020-04 |
Arrow Information Co., Ltd. a subsidiary |
| 2020-09 |
（株）夢グローバルは（株）夢テクノロジーを存続会社として吸収合併 |
| 2020-09 |
Yume Global Co., Ltd. merged with Yume Technology Co., Ltd. as the surviving company. |
| 2021-01 |
（株）アロートラストシステムズを子会社化 |
| 2021-01 |
（株）ビーネックスグループ（現・当社）に社名変更 |
| 2021-01 |
Arrow Trust Systems Co., Ltd. acquired and made into subsidiary |
| 2021-04 |
Merged as BeNext-Yumeshin Group Co. |
| 2023-01 |
Company name changed to Open Up Group Inc. |
| 2024-04 |
UT Technology Co., Ltd. and UT Construction Co., Ltd. are acquired and made into subsidiaries of Open Up Group Inc.; UT Technology Co., Ltd. changed its name to Open Up Technology Inc.; UT Construction Co., Ltd. changed its name to Open Up Construction Inc. |
| 2024-10 |
IR Inc. acquired and made into subsidiary; Part of Open Up Technology's business was split and absorbed into BeBeNEXT Technologies Inc. and Open Up IT Engineer Inc.; The company was merged into BeNEXT Solutions Inc. |
