Mizuho Financial Group, Inc. filed a Schedule 13G with the SEC on November 12, 2026, disclosing beneficial ownership of 490,260 common shares of Westin Acquisition Corp as of September 30, 2026.

Key Highlights

  • Beneficial ownership: Mizuho Financial Group, Inc. reported aggregate beneficial ownership of 490,260 common shares of Westin Acquisition Corp.
  • Percent of class: The 490,260 shares represent 8.1% of the class of common shares, according to the filing.
  • Sole voting and dispositive power: Mizuho Financial Group, Inc. reported sole voting power and sole dispositive power over all 490,260 shares, with no shared voting or dispositive power.
  • Triggering event date: The date of the event requiring the filing was September 30, 2026.
  • Indirect beneficial ownership: According to the filing, 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 is their wholly-owned subsidiary."
  • Filer classification: Mizuho Financial Group, Inc. is classified as a Parent Holding Company in the filing, organized under the laws of Japan.

Mizuho Financial Group Discloses Passive Stake in Westin Acquisition Corp

Mizuho Financial Group, Inc., headquartered at 1-5-5, Otemachi, Chiyoda-ku, Tokyo, 100-8176, Japan, filed a Schedule 13G disclosing a beneficial ownership position in Westin Acquisition Corp, whose principal executive offices are listed as Suite 1165-L3 Coleman Street, #03-24, Singapore, Republic of Singapore 179804. The filing was signed by Takahiro Katsura, Managing Director, Global Corporate Function Coordination Department, and dated November 12, 2026.

According to the filing, the 490,260 common shares (CUSIP G9584S106) are directly held by Mizuho Securities USA LLC, a wholly-owned subsidiary, with Mizuho Financial Group, Inc., Mizuho Bank, Ltd., and Mizuho Americas LLC each described as potentially deemed indirect beneficial owners. The filing identifies Mizuho Financial Group, Inc. as the reporting person and classifies it as a Parent Holding Company (type "FI"). The filing references Exhibit A for the identity and classification of the relevant subsidiary.

The certifications included in the filing state that, to the best of the signatory's knowledge and belief, "the securities referred to above 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 of the securities." The filing also certifies 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. filed a Schedule 13G reporting 490,260 common shares, or 8.1% of the class, in Westin Acquisition Corp as of September 30, 2026. The shares are directly held by subsidiary Mizuho Securities USA LLC.