| June 1991 | Okinawa Cellular Telephone Company was established. Initial capital was 300 million yen. | 
|---|---|
| November 1996 | Rights offering (296 million yen) and allocation of new shares to a third party (456,000 yen). | 
| April 1997 | Corporate stock registered at Japan Securities Dealers Association. 818.125 million yen capital increase through public offering. Capital increases to 1,414.581 million yen. | 
| July 1999 | Split common shares 5 for 1, altering the face value from 50,000 yen to 10,000 yen. | 
| November 2004 | Split common shares 2 for 1. | 
| September 2005 | Split common shares 2 for 1. | 
| October 2012 | Split common shares 100 for 1. | 
| October 2022 | Split common shares 2 for 1. | 
| October 2025 | Split common shares 2 for 1. |