Mizuho Financial Group, Inc. filed Amendment No. 1 to Schedule 13G with the SEC on November 12, 2026, disclosing beneficial ownership of Common Shares of SPACSphere Acquisition Corp. as of September 30, 2026.

Key Highlights

  • Beneficial ownership: Mizuho Financial Group, Inc. reported aggregate beneficial ownership of 1,257,763 Common Shares of SPACSphere Acquisition Corp.
  • Percent of class: The 1,257,763 shares represent 6.9% of the class, according to the filing.
  • Sole voting and dispositive power: Mizuho Financial Group, Inc. holds sole voting power and sole dispositive power over all 1,257,763 shares, with no shared voting or dispositive power reported.
  • Triggering event date: The date of event requiring this filing is stated as September 30, 2026.
  • Indirect ownership chain: The filing states that Mizuho Financial Group, Inc., Mizuho Bank, Ltd., and Mizuho Americas LLC "may be deemed to be indirect beneficial owners of said equity securities directly held by Mizuho Securities USA LLC," which the filing describes as their wholly-owned subsidiary.
  • Filer classification: Mizuho Financial Group, Inc. is identified as a Parent Holding Company and is organized in Japan.

Mizuho Financial Group's Disclosed Position in SPACSphere Acquisition Corp.

According to the filing, Mizuho Financial Group, Inc., headquartered at 1-5-5, Otemachi, Chiyoda-ku, Tokyo, 100-8176, Japan, submitted Amendment No. 1 to Schedule 13G disclosing its beneficial ownership position in SPACSphere Acquisition Corp. (CUSIP: G8T088109). The issuer's principal executive offices are listed at 8795 Folsom Blvd, Sacramento, CA 95826. The event date that required the filing is September 30, 2026, and the statement was signed on November 12, 2026, by Takahiro Katsura, Managing Director, Global Corporate Function Coordination Department.

The filing reports that the 1,257,763 Common Shares are held with sole voting power and sole dispositive power entirely by the reporting person, with zero shares subject to shared voting or dispositive power. The filing notes that these securities are directly held by Mizuho Securities USA LLC, a wholly-owned subsidiary, and that Mizuho Financial Group, Inc., Mizuho Bank, Ltd., and Mizuho Americas LLC may be deemed indirect beneficial owners as a result of that relationship.

As required under Schedule 13G certification language, the filing states that the securities "were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer." The filer also certified that the foreign regulatory scheme applicable to the Parent Holding Company is "substantially comparable to the regulatory scheme applicable to the functionally equivalent U.S. institution(s)."

What Was Disclosed

Mizuho Financial Group, Inc. disclosed beneficial ownership of 1,257,763 Common Shares of SPACSphere Acquisition Corp., equal to 6.9% of the class, as of September 30, 2026, through its wholly-owned subsidiary Mizuho Securities USA LLC, in an amended Schedule 13G filing.