“GMO SONIC 2027” Confirmed!

GMO Internet Group (Group Representative: Masatoshi Kumagai) and Creativeman Productions Co., Ltd. (President: Naoki Shimizu) have decided to hold the large-scale music festival "GMO SONIC 2027" for two days on April 3 (Sat) and April 4 (Sun), 2027, at "GMO Arena Saitama" (Saitama City, Saitama Prefecture).

Furthermore, on March 30, 2026, GMO Internet Group concluded a value-up naming rights agreement with Saitama Prefecture and Saitama Arena Co., Ltd. As a result, it has been decided that the nickname for the Saitama Super Arena will be "GMO Arena Saitama" starting in April 2026.

"GMO Arena Saitama," which is currently undergoing renovation, will host "GMO SONIC 2027" as its first performance following the reopening.

【About "GMO SONIC 2027"】 (URL: https://sonic.gmo/) "GMO SONIC" is a large-scale music event organized by GMO Internet Group—which operates businesses in internet infrastructure, internet security, internet advertising/media, internet finance, and crypto-assets under the corporate catchphrase "Internet for Everyone"—and Creativeman Productions, which organizes music festivals such as SUMMER SONIC in addition to hosting performances by domestic and international artists.

This year marks the fifth installment since the event began in 2023, and it will return to "GMO Arena Saitama." Artists leading the domestic and international dance music scenes are scheduled to perform. As a large-scale music event originating from Japan, we will deliver a festival that fuses Japanese culture and entertainment to customers around the world.

GMO Internet Group will continue to evolve "GMO SONIC" into a music festival that Japan can be proud of globally, delivering "smiles" and "excitement" to even more people.

【About "GMO Arena Saitama"】 On March 30, 2026, GMO Internet Group concluded a value-up naming rights partner agreement with Saitama Prefecture and Saitama Arena Co., Ltd. Consequently, the nickname for "Saitama Super Arena" will be "GMO Arena Saitama" starting in April 2026.

GMO Internet Group views this naming rights agreement as more than just assigning a nickname; it is an initiative to fuse No. 1 technology with hospitality to realize the "evolution of the arena" and "contribution to the local community."

We aim to evolve the venue into a "one-of-a-kind cultural and entertainment hub in the world" and a "stage that creates the future for sustainable community and social development." With the catchphrase "GMO Arena Saitama: Delivering smiles, excitement, and enthusiasm to everyone," we will realize a "Smart Arena" that is more globally recognized and beloved by the local community than ever before.

【"GMO SONIC 2027" Event Overview】 ● Event Name: GMO SONIC 2027 ● Dates: April 3 (Sat) and April 4 (Sun), 2027 ● Venue: GMO Arena Saitama ● Official Website: https://sonic.gmo/ ● Official SNS ・ X (formerly Twitter): https://x.com/gmosonic ・ Instagram: https://www.instagram.com/gmosonic/ ・ Facebook: https://www.facebook.com/gmosonic ・ YouTube: https://www.youtube.com/@gmosonic ・ LINE: https://line.me/R/ti/p/@gmosonic ・ TikTok: https://www.tiktok.com/@gmosonic ● Organizer/Planner: GMO Internet Group, Inc. / Creativeman Productions Co., Ltd. ● Production/Operation/Booking: Creativeman Productions Co., Ltd. ● Inquiries: Creativeman Productions Co., Ltd. TEL: 03-3499-6669 (Mon, Wed, Fri 12:00–16:00)

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【GMO Internet Group, Inc.】 (URL: https://group.gmo/) Company Name: GMO Internet Group, Inc. (Tokyo Stock Exchange Prime Market, Securities Code: 9449) Location: Cerulean Tower, 26-1 Sakuragaoka-cho, Shibuya-ku, Tokyo Representative: Masatoshi Kumagai, Representative Director and Group Representative Business Description: Holding company (Group management functions) ■ Group Business Areas Internet Infrastructure Business Internet Security Business Internet Advertising/Media Business Internet Finance Business Crypto-asset Business Capital: 5 billion yen Copyright (C) 2026 GMO Internet Group, Inc. All Rights Reserved.