Mizuho to acquire majority of Upsider’s shares for $309.8m

Upsider provides corporate credit card and invoice payment services.

Mizuho Bank is acquiring the majority of Upsider Holdings, Inc.’s shares for about $309.82m (JPY46b).

In a press statement, the Japanese megabank said that it will buy approximately 70% of Upsider’s shares from current holders. This includes venture capital firms from within and outside Japan. Upsider’s founding shareholders will retain their shares.

Following the share acquisition, Upsider will become a consolidated subsidiary of Mizuho Bank.

Upsider is a financial services provider based in Japan, focusing on startups, middle-market firms, and challenger companies. It makes use of an AI credit model and other technologies.

Over 80,000 companies reportedly use Upsider’s corporate credit card or its Shiharai invoice payment service.

(US$1 = JPY148.47; as of 29 July 2025, Google, from Morningstar)