| 1919 | Founder Riichi Ezaki confirmed suitability of glycogen contained in oysters for confectionery production. |  |
| 1921 | Production and trial launch of "Glico" caramel commenced. Ezaki Shoten established in Nishi-ku, Osaka. Horie Plant built. |  |
| 1922 | "Glico" sales launched at Mitsukoshi Department Store in Osaka on February 11. This date designated as the company's foundation day. |  |
| 1925 | Toyosaki Plant established to take over Horie Plant's operations. |
| 1927 | The first confectionery including an 'omake' (free toy) developed. This was to satisfy the two basic desires of children - eating and playing - at the same time. |  |
| 1931 | Glico vending machine with a film projector developed and patent applied for. Installed in various department stores in Tokyo, this machine gains tremendous popularity. Osaka Plant established to take over Toyosaki Plant's operations. |
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| 1932 | Dalian Plant established in China, marking the company's entry to Chinese and Southeast Asian markets. |
| 1933 | Yeast-based biscuit "Bisco" launched and its newly developed production method attracts a great deal of attention. Unique mini-size advertisement with short-message launched, gaining popularity. |
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| 1934 | The Mother & Child Health Foundation established for promoting the health of mothers and children and for social contributions. |  |
| 1935 | Giant 33 meter high Glico neon sign built in Osaka, becoming a landmark. |  |
| 1937 | Tokyo Plant established. |
