MIZUHO FINANCIAL GROUP INC - 31 Dec 2025 SCHEDULE 13G Report for SilverBox Corp IV Common Shares (SBXD)

Filing Manager: MIZUHO FINANCIAL GROUP INC
Reporting Manager: Mizuho Financial Group, Inc.
Security: SilverBox Corp IV Common Shares
Symbol: SBXD
Shares outstanding: 20,570,913 shares
Disclosed Ownership: 1,645,673 shares
Ownership: 8%
Form type: SCHEDULE 13G
Filing time: 12 Feb 2026, 06:40:07 UTC
Date of event: 31 Dec 2025
SEC: View on sec.gov

Reporting Managers (1)

Name	Ownership	Shares Owned	sole voting power	shared voting power	Signature	Title	CIK
Mizuho Financial Group, Inc.	8%	1,645,673	1,645,673	0	/s/ Takahiro Katsura	Takahiro Katsura, Managing Director, Global Corporate Function Coordination Department