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Established KEIYU Shoji Co., Ltd. in Machida, Tokyo, and began selling automobiles.
Established the Hachioji sales office (now the Hachioji store).
Completed construction of the head office sales office.
Merged KEIYU Motors Co., Ltd.
Established B. KEIYU Co., Ltd. (now Stern Setagaya Co., Ltd.).
Changed the company name to KEIYU Co., Ltd.
Established the Riders Shop KEIYU Sagamihara store (now Harley-Davidson Sagamihara).
Entered into a dealership agreement with Mercedes-Benz Japan Co., Ltd.
Changed the name of B. KEIYU Co., Ltd. to Stern Tomei Yokohama Co., Ltd. (now Stern Setagaya Co., Ltd.).
Registered its shares for over-the-counter trading with the Japan Securities Dealers Association (now the Japan Securities Dealers Association).
Established the Stern Tomei Yokohama main showroom (now Mercedes-Benz Tomei Yokohama).
Established the Tama branch of Stern Tomei Yokohama Co., Ltd. (now Stern Setagaya Co., Ltd.) (now Mercedes-Benz Tama).
Opened the Import Car Kyu East Yokohama store.
Opened the Sagamihara West office (now Sagamihara West store).
Opened the Yokosuka office (now Yokosuka store).
Signed an authorized dealer agreement with Harley-Davidson Japan Co., Ltd.
Signed a main dealer agreement with Chrysler Japan Sales Co., Ltd. (now Stellantis Japan Co., Ltd.).
Opened the Totsuka office.
Opened the Chiba office (now Chiba store).
Listed shares on the Second Section of the Tokyo Stock Exchange (now Tokyo Stock Exchange Inc.).
Opened the Sturn East Yokohama used car center (now Sturn Setagaya) (now Mercedes-Benz East Yokohama Certified Car Center).
Opened the Chrysler Sagamihara store (now Jeep Sagamihara).
Opened the Chrysler East Yokohama store (now Jeep Tsuji Yokohama).
Opened the Hino office.
Opened the Kuki Shirahoka office (now Kuki Shirahoka store).
Acquired Sturn Setagaya Inc.
Opened the Sturn Setagaya used car center (now Mercedes-Benz Setagaya South Certified Car Center).
Merged Sturn East Yokohama and Sturn Setagaya (now Sturn Setagaya Inc.).
Opened the Higashiyamato office (now Higashiyamato store).
Opened the Sturn Setagaya Azamino branch (now Mercedes-Benz Azamino).
Opened the Utsunomiya Interpark store.
Established MotoRen East Yokohama Inc.
Motoren Tokai Yokohama Co., Ltd. acquires the operating rights of five stores from BMW Tokyo Co., Ltd.
Opened the Sango Inter store.
Stellun Setagaya Mercedes-Benz Tokai Yokohama was re-opened.
Date established: October 1, 2007
Changed the company name to Ky Holdings Co., Ltd.
Established the business company Ky Co., Ltd. through a new split.
Opened Ky Chiba Newtown store.
Ky Tsurukawa store was re-opened as MotoRen Tokai Yokohama Machida Tsurukawa Approved Car Center (currently BMW Premium Selection Machida Tsurukawa).
Established Five Star Setagaya (currently Five Star Tokai Yokohama).
Transferred the business of MotoRen Tokai Yokohama Konan branch.
Establishment date: June 6, 2008.
Changed the company name of Five Star Setagaya to Faren Kanagawa Central (currently Five Star Tokai Yokohama).
Split GM Chevrolet Tokai Yokohama of Ky and had Five Star Tokai Yokohama inherit it.
Closed MotoRen Tokai Yokohama Yokohama West Exit branch and established Yokohama Mitsuzawa branch.
Split Harley-Davidson Sagamihara of Ky and had Five Star Tokai Yokohama inherit it.
Opened Faren Kanagawa Central (currently Five Star Tokai Yokohama) Volkswagen Sagamihara Hashimoto.
Re-opened Ky Main Store.
Opened Five Star Tokai Yokohama Jeep Tokai Yokohama and Cadillac Chevrolet Tokai Yokohama simultaneously.
Opened Ky Ashibusa store.
MotoRen Tokai Yokohama established Yokosuka branch through business acquisition.
Re-opened MotoRen Tokai Yokohama BMW Tokai Yokohama Main Store and MINI Tokai Yokohama.
Faren Kanagawa Central absorbed Five Star Tokai Yokohama and changed the company name to Five Star Tokai Yokohama.
Opened K.Y. Sano store
Renovated and reopened Sturn Setagaya Mercedes-Benz Setagaya South
Opened K.Y. Sendai Izumi store
Opened K.Y. Sendai Wakabayashi store
Separated the Harley-Davidson business at Five Star Higashiyama Yokohama and established RS K.Y.
Designated as a First Section listing on the Tokyo Stock Exchange
Opened MotoRen Higashiyama Yokohama BMW Premium Selection at Higashiyama Yokohama
Opened Five Star Higashiyama Yokohama Jeep Sagamihara and Cadillac Chevrolet Sagamihara simultaneously
Opened Five Star Higashiyama Yokohama Volkswagen Yamato
Renovated and reopened Sturn Setagaya Mercedes-Benz Setagaya South Certified Car Center
Opened K.Y. Shonan Tokusa store
Opened Sturn Setagaya Mercedes-Benz Higashiyama Shizuoka
Opened K.Y. Morioka South store
Opened K.Y. Akita South store
Fully acquired Yokosuka Yanase Co., Ltd. through share acquisition
Renamed Yokosuka Yanase Co., Ltd. to Sturn Yokosuka Co., Ltd.
Opened K.Y. Kanazawa Nonoi store
Opened K.Y. Aomori Hachinohe store
Opened Sturn Setagaya Mercedes-Benz Shin-Yurigaoka
Opened K.Y. Yamagata Nishi Bypass store
Sturm Setagaya Co., Ltd. absorbs Sturm Yokosuka Co., Ltd.
Sturm Setagaya Co., Ltd. establishes AMG Tokyo Setagaya.
RS Kyu Harley-Davidson Sagamihara relocates and reopens.
Kyu Hakodate store established.
Sturm Setagaya Mercedes-Benz Tama reopens.
Five Star Tomei Yokohama Co., Ltd. renovated and reopened Jeep Tomei Yokohama; KU Co., Ltd. opened its Toyama Interchange store.
Five Star Higashi-Nambu Yokohama Jeep Higashi-Nambu Yokohama reopens.
Kyu Toyama Inter store established.
KU Co., Ltd. opened its Asahikawa store.
KU Co., Ltd. opened its Takaoka store.
KU Co., Ltd. opened its Yamagata Tsuruoka store.
Stern Setagaya Co., Ltd. renovated and reopened Mercedes-Benz Yokosuka; KU Co., Ltd. renovated and reopened its Yokosuka store.
Sturm Setagaya Mercedes-Benz Yokosuka reopens.
Kyu Yokosuka store reopens.
Motoren Tomei Yokohama Co., Ltd. opened BMW Machida Tsurukawa and MINI Machida Tsurukawa.
KU Co., Ltd. opened its Niigata Meike store.
Five Star Tomei Yokohama Co., Ltd. opened Jeep Shin-Yurigaoka.
Became a wholly owned subsidiary of Stern Yokohama East Co., Ltd. through an acquisition of shares.
KU Co., Ltd. opened its Shonan Hiratsuka store.
Stern Setagaya Co., Ltd. opened Mercedes-Benz Konandai.
KU Co., Ltd. opened its Obihiro store.
Motoren Tomei Yokohama Co., Ltd. opened BMW Chofu and BMW Premium Selection Chofu.
KU Co., Ltd. opened its Niigata Joetsu store.
Stern Yokohama East Co., Ltd. relocated and reopened Mercedes-Benz Yokohama East.
Motoren Tomei Yokohama Co., Ltd. opened BMW Premium Selection Yokohama Mitsuzawa.
Following the restructuring of market segments at the Tokyo Stock Exchange, transferred from the First Section to the Standard Market; Stern Setagaya Co., Ltd. opened Mercedes-Benz Hachioji.
Due to a review of the Tokyo Stock Exchange market classification, it moved from the First Section to the Standard Market.
Sturm Setagaya Mercedes-Benz Hachioji established.
Stern Setagaya Co., Ltd. opened Mercedes-EQ Yokohama (now Mercedes-Benz Yokohama Chuo) and Stars @ Mercedes-Benz Ginza.
Sturm Setagaya Mercedes EQ Yokohama (now Mercedes-Benz Yokohama Central) established.
Sturm Setagaya Stars @ Mercedes-Benz Ginza established.
Merged Stern Yokohama East Co., Ltd. into Stern Setagaya Co., Ltd.
Established Five Star Tomei Yokohama Co., Ltd.'s Atsugi Jeep dealership; relocated and reopened KEIYU Co., Ltd.'s Utsunomiya Interpark store in renovated premises.
Five Star Higashi-Nambu Yokohama Jeep Atsugi established.
Kyu Utsunomiya Interpark store relocated and newly opened.
Established KEIYU Co., Ltd.'s Aomori Route 7 Bypass store.
Established KEIYU Co., Ltd.'s Nagano store.
Spun off the Volkswagen business of Five Star Tomei Yokohama Co., Ltd.; acquired Stern Nishi-Tama Co., Ltd. through a share transfer and made it a wholly owned subsidiary.
Five Star Higashi-Nambu Yokohama Co., Ltd. splits its Volkswagen business.
By acquiring shares, Sturm Nishi-Tama Co., Ltd. becomes a wholly-owned subsidiary.
Acquired Stern Chuo Co., Ltd. through a share transfer and made it a wholly owned subsidiary.
Established KEIYU Co., Ltd.'s Kawagoe Interchange store.
Merged Stern Nishi-Tama Co., Ltd. into Stern Setagaya Co., Ltd.
Kiyokoshi Kanade has been dispatched to the 2026 World Equestrian Championships. She will compete in Aachen with her beloved horse, Bior. The World Equestrian Championships is an international para-equestrian event held once every four years, representing the pinnacle of the sport.
Mercedes-Benz Japan LLC hosted the 2026 fiscal year's first quarter recognition, where the Sterren Setagaya Group received the Excellent Dealer Award. The award was due to the support from customers and stakeholders on a daily basis, and they stated they will continue to strive to improve their services.
Stern Setagaya Co., Ltd. delivered a premium SUV GLC to professional golfer Reika Tsukasa and will support her future activities.
Shinichi Yokota, a contracted professional golfer of Stern Corporation Setagaya, won the Unityx Senior Open held at Nanki Shirahama Golf Club.
Sterren Setagaya Group received the Best Sales Award at Mercedes-Benz Japan's 2025 Outstanding Dealer Awards.
Stellun Setagaya Co., Ltd. received the Outstanding Dealer Award at the Q3 2025 Mercedes-Benz Japan awards.
Leon Racing No. 65 car won the 2025 Series Championship. We appreciate the support throughout the season.