Corporate History (1972-1989)
1972
| March | Trial store opens at Narimasu in Tokyo on March 12 | 
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| June | The first MOS BURGER store, MOS BURGER Narimasu, opens | 
| July | MOS FOOD SERVICES, INC. is established, and founder Satoshi Sakurada becomes representative director and president | 
1973
| May | The new hamburger "Teriyaki Burger", a major hit, is introduced | 
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| November | The first MOS BURGER franchise store opens in Aratama, Nagoya City | 
1976
| October | The 50th MOS BURGER store, MOS BURGER Koza, opens in Okinawa | 
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1977
| December | MOS SUPPLY, INC. (now MHS, INC.), a subsidiary engaged in food hygiene inspection, is established | 
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1978
| June | MOS CREDIT, INC., a machinery rental and insurance agency, is established | 
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1979
| January | The 100th MOS BURGER store, MOS BURGER Shodoshima, opens in Kagawa | 
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1980
| September | "MOS BURGER Kyoei-kai," a mutual support organization for franchise owners, is formed | 
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1982
| January | "HDC (Hospitality, Deliciousness, Cleanliness), a campaign designed to improve service, is launched | 
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1983
| August | The 200th MOS BURGER store, MOS BURGER Futenma, opens in Okinawa | 
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1984
| June | The new hamburger "Teriyaki Chicken Burger" is introduced | 
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| July | Company name changes to MOS FOOD SERVICES, INC. | 
1985
| June | The 300th MOS BURGER store, MOS BURGER Iizuka, opens in Fukuoka | 
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| November | Trading of MOS FOOD SERVICES, INC. shares begins on the over-the-counter market | 
1986
| March | The first store with a drive-through, MOS BURGER Makiminato, opens in Okinawa | 
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| May | The 400th MOS BURGER store, MOS BURGER Yamagata Sakurada, opens in Yamagata | 
| June | MOS becomes the first company in the food services industry to open stores in all 47 prefectures | 
| December | The 500th MOS BURGER store, MOS BURGER Utsunomiya Tsuruta, opens in Tochigi | 
1987
| August | The new product "MOS Hot Dog" is introduced | 
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| October | The 600th MOS BURGER store, MOS BURGER Hiroshima Ujina, opens in Hiroshima | 
| December | The new hamburger "MOS Rice Burger" an innovative product is introduced | 
1988
| March | MOS FOOD SERVICES, INC. shares are listed on the Second Section of the Tokyo Stock Exchange | 
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| July | The 700th MOS BURGER store, MOS BURGER Minami-Otsuka, opens in Tokyo | 
| October | MOS FOOD SERVICES, INC. enters into a capital participation arrangement in KOHBAI FOODS, INC., a manufacturer of frozen foods | 
1989
| April | The 800th MOS BURGER store, MOS BURGER Yokohama Miyamoto-cho, opens in Kanagawa | 
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| June | The "MOS Kawaguchiko Village" training center is opened in Yamanashi | 
| September | The new hamburger "Pork Cutlet Burger" is introduced | 
| December | MOS FOOD SERVICES, INC. enters into a capital participation arrangement in TAMY FOODS, INC., a food wholesaling manufacturer |