Mizuho Financial Group, Inc. filed a beneficial ownership statement with the SEC on November 12, 2026, reporting a 6.5% stake in RF Acquisition Corp III as of September 30, 2026.

Key Highlights

  • Reporting person: Mizuho Financial Group, Inc., a Japan-incorporated parent holding company headquartered at 1-5-5, Otemachi, Chiyoda-ku, Tokyo, 100-8176, Japan.
  • Issuer: RF Acquisition Corp III, with principal executive offices at 111 Somerset, #05-07, Singapore, Republic of Singapore 238164.
  • Shares beneficially owned: 900,447 Common Shares, representing 6.5% of the class (CUSIP G7537X107).
  • Voting and dispositive power: Mizuho Financial Group holds sole voting power and sole dispositive power over all 900,447 shares, with no shared voting or dispositive power reported.
  • Triggering event date: September 30, 2026, identified in the filing as the date of the event requiring this statement.
  • Indirect ownership: According to the filing, the shares 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 indirect beneficial owners.
  • Signed by: Takahiro Katsura, Managing Director, Global Corporate Function Coordination Department, on November 12, 2026.

Mizuho Financial Group Reports Passive Ownership Position in RF Acquisition Corp III

Mizuho Financial Group, Inc., one of Japan's major banking and financial services groups organized as a parent holding company, disclosed beneficial ownership of 900,447 Common Shares of RF Acquisition Corp III, a special purpose acquisition company registered with principal offices in Singapore. The filing reports ownership as of September 30, 2026, and was submitted to the SEC on November 12, 2026. The CUSIP number associated with the reported securities is G7537X107.

According to the filing, the shares are not held directly by Mizuho Financial Group itself but are directly held by Mizuho Securities USA LLC. 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 is their wholly-owned subsidiary." The subsidiary structure is described further in Exhibit A of the filing, which identifies and classifies the relevant subsidiary as required under SEC rules for parent holding company filers.

The filing's certifications state that, to the best of the signatory's knowledge, 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." No shared voting or dispositive power over any of the 900,447 shares was reported. The filing classifies Mizuho Financial Group, Inc. as a financial institution filing in its capacity as a parent holding company.

What Was Disclosed

Mizuho Financial Group, Inc. reported beneficial ownership of 900,447 Common Shares, or 6.5%, of RF Acquisition Corp III as of September 30, 2026, held indirectly through wholly-owned subsidiary Mizuho Securities USA LLC, with the statement signed on November 12, 2026.