Mizuho Financial Group, Inc. filed Amendment No. 2 to Schedule 13G with the SEC on November 12, 2026, disclosing beneficial ownership of Common Shares of Yorkville Acquisition Corp. as of September 30, 2026.

Key Highlights

  • Filer: Mizuho Financial Group, Inc., organized in Japan, filed as a parent holding company.
  • Shares beneficially owned: 221,419 Common Shares of Yorkville Acquisition Corp., representing 1.2% of the class.
  • Voting and dispositive power: Mizuho Financial Group, Inc. reported sole voting power and sole dispositive power over all 221,419 shares, with no shared voting or dispositive power.
  • Triggering event date: The date of event requiring the filing was September 30, 2026.
  • 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 deemed indirect beneficial owners.
  • Ordinary course certification: The filer certified 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."

Mizuho Financial Group's Schedule 13G Amendment for Yorkville Acquisition Corp.

Mizuho Financial Group, Inc., headquartered at 1-5-5, Otemachi, Chiyoda-ku, Tokyo, 100-8176, Japan, submitted Amendment No. 2 to its Schedule 13G on November 12, 2026, covering Common Shares (CUSIP: G98659116) of Yorkville Acquisition Corp., whose principal executive offices are located at 1012 Springfield Avenue, Mountainside, NJ 07092. The filing was signed by Takahiro Katsura, Managing Director, Global Corporate Function Coordination Department, on behalf of Mizuho Financial Group, Inc.

According to the filing, the aggregate beneficial ownership reported is 221,419 shares, equating to 1.2% of the class. All 221,419 shares carry sole voting power and sole dispositive power attributed to Mizuho Financial Group, Inc., with zero shares subject to shared voting or shared dispositive power. The filing notes that the shares 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 to be indirect beneficial owners" of those securities.

The filing identifies Mizuho Financial Group, Inc. as a parent holding company (type "FI") and falls under Item 5, ownership of 5 percent or less of a class. The filer further certified compliance with the foreign regulatory scheme comparability requirement applicable to non-U.S. parent holding companies and undertook to furnish additional information to Commission staff upon request.

What Was Disclosed

Mizuho Financial Group, Inc. disclosed indirect beneficial ownership of 221,419 Common Shares of Yorkville Acquisition Corp., representing 1.2% of the class as of September 30, 2026, held directly by wholly-owned subsidiary Mizuho Securities USA LLC.