| 1886-11 |
Founder Yasutarō Sanogawatani was born in Sano Town, Sennan District, Osaka Prefecture |
| 1897 |
Yasutarō Sanogawatani began training as a shipbuilder at age 11 |
| 1903 |
At age 17, Yasutarō Sanogawatani traveled around Tohoku and Hokkaido, starting in Tokyo, to learn shipbuilding techniques |
| 1911-04 |
Founded Sano Shipyard |
| 1924-01 |
Acquired Senbonmatsu Shipyard Co., Ltd. |
| 1927-05 |
Founded Shiba Iron Works by Shiba Kiichi's personal management, began manufacturing automobile parts |
| 1940-06 |
Established Sano An Shipyard Co., Ltd. (capital of 1.5 million yen) |
| 1940-12 |
Established Kokusaku Industry Co., Ltd. Headquarters: 3-2-28 Fukae-Kita, Higashinari-ku, Osaka City |
| 1944-04 |
Designated as a military supply company |
| 1945-05 |
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| 1945-05 |
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| 1945-08 |
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| 1946-09 |
Designated as a compensation factory by GHQ (removed in May 1949) |
| 1947-04 |
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| 1952-04 |
Founded as a machining company (privately owned) of Daihatsu Motor Co., Ltd. |
| 1961-04 |
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| 1961-04 |
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| 1961-05 |
Established the corporate motto 'Build ships with heartfelt sincerity' |
| 1961-06 |
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| 1961-11 |
Established Kato Seiki Manufacturing Co., Ltd. |
| 1963-02 |
In February 1963, Sano Ansen Kyo Co., Ltd. (now SanoYasu Holdings Co., Ltd.) became a subsidiary. |
| 1963-02 |
Became a subsidiary of Sano Yasu Shipyard Co., Ltd. (now Sanoyasu Holdings Co., Ltd.) |
| 1967-06 |
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| 1973-04 |
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| 1974-01 |
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| 1974-02 |
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| 1974-10 |
Changed the company name to Kato Seiki Co., Ltd. |
| 1975-03 |
Relocated factory to Sanda City, Hyogo Prefecture |
| 1975-11 |
Panasonic Corporation (formerly Matsushita Electric) became a joint venture company |
| 1981-06 |
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| 1984-08 |
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| 1984-08 |
Renamed to K.S. Sanoyasu Co., Ltd. |
| 1987-01 |
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| 1987-01 |
Moved headquarters to 501-3 Miyano-mae, Fukushima, Sanda City |
| 1990-04 |
Completed Kofu Factory in Kofu City, Yamanashi Prefecture |
| 1990-10 |
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| 1991-04 |
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| 1991-04 |
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| 1993-06 |
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| 1993-08 |
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| 1995-04 |
In April 1995, Kato Seiki Co., Ltd. became a subsidiary of SanoYasu Holdings Co., Ltd. |
| 1995-04 |
Became a subsidiary of Sanoyasu Holdings Co., Ltd., formerly Sanoyasu & Hishino Meisho Co., Ltd. |
| 1997-06 |
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| 2000-02 |
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| 2003-06 |
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| 2005-04 |
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| 2007-03 |
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| 2008-11 |
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| 2009-02 |
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| 2009-06 |
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| 2009-07 |
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| 2010-04 |
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| 2011-04 |
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| 2011-10 |
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| 2011-10 |
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| 2011-10 |
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| 2012-01 |
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| 2013-07 |
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| 2013-07 |
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| 2014-01 |
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| 2014-03 |
Started solar power generation business (821Kw) on owned land (10,000㎡) in Taka Town, Hyogo Prefecture |
| 2014-04 |
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| 2014-11 |
In November 2014, Kato Seiki Co., Ltd. became a wholly owned subsidiary of SanoYasu Holdings Co., Ltd. |
| 2014-11 |
Became a wholly owned subsidiary of Sanoyasu Holdings Co., Ltd. |
| 2015-03 |
Acquired Daiyu Co., Ltd. |
| 2015-04 |
Sano Yasu Ride (Australia) and Melbourne Star Management merged their businesses |
| 2016-04 |
Established Sano Yasu Business Partner Co., Ltd. through the merger of Sano Yasu Trading Co., Ltd., Sano Yasu Security Services Co., Ltd., and Sano Yasu Industries Co., Ltd. |
| 2017-02 |
In February 2017, K.S. SanoYasu Co., Ltd. became a wholly owned subsidiary of SanoYasu Holdings Co., Ltd. |
| 2017-02 |
Became a wholly owned subsidiary of Sanoyasu Holdings Co., Ltd. |
| 2017-04 |
Sano Yasu Precision Industries Co., Ltd. merged with Kato Precision Co., Ltd. and K.S. Sano Yasu Co., Ltd. |
| 2017-04 |
In April 2017, Kato Seiki Co., Ltd., K.S. SanoYasu Co., Ltd., and SanoYasu Precision Industry Co., Ltd. were absorbed and merged. |
| 2017-04 |
Merged into Kato Seiki Co., Ltd., K.S. Sanoyasu Co., Ltd., and Sanoyasu Precision Industries Co., Ltd. |
| 2018-04 |
Established Sano Yasu MTG Co., Ltd. |
| 2018-06 |
Transitioned to a company with an Audit and Supervisory Committee |
| 2019-03 |
In March 2019, a new headquarters building was completed in Sanda City, Hyogo Prefecture, consolidating three production bases in the Kansai region. |
| 2019-03 |
New company building completed at headquarters (Sanda City, Hyogo Prefecture), consolidating three production bases in Kansai region |
| 2019-04 |
Sano Yasu Engineering Co., Ltd. merged with Daiyu Co., Ltd. |
| 2019-04 |
Sano Yasu Business Partner Co., Ltd. merged with Sano Tech Co., Ltd. and changed its company name to Sano Tech Co., Ltd. |
| 2020-01 |
Acquisition of Happiness Denki Co., Ltd. |
| 2020-04 |
SanoYasu Engineering Co., Ltd. merged with SanoYasu Construction Machinery Co., Ltd. |
| 2021-01 |
Transfer of SanoYasu Ride (Australia) |
| 2021-02 |
Transfer of SanoYasu Shipbuilding Co., Ltd. |
| 2021-03 |
Appointment of Isao Kitaki as President and CEO |
| 2021-03 |
SanoYasu MTG Co., Ltd. changed its company name to SanoYasu Techno Support Co., Ltd. |
| 2022-04 |
Yamada Industrial Co., Ltd. changed its company name to SanoYasu Entec Co., Ltd. |
| 2022-04 |
Transition to the Tokyo Stock Exchange Standard Market |
| 2022-08 |
Acquisition of Shoei Electric Co., Ltd. and Shoei Electric System Control Co., Ltd. |
| 2025-06 |
Acquisition of Kodera Electronics Manufacturing Co., Ltd. |
| 2025-07 |
Acquisition of Yamagata Kyodo Co., Ltd. |
