HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND - 31 Mar 2025 SCHEDULE 13G/A Report for SilverBox Corp IV Class A ordinary shares, $0.0001 par value (SBXD)

Filing Manager
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND
Reporting Manager
Healthcare of Ontario Pension Plan Trust Fund
Security
SilverBox Corp IV Class A ordinary shares, $0.0001 par value
Symbol
SBXD
Shares outstanding
20,454,545 shares
Disclosed Ownership
1,800,000 shares
Ownership
8.8%
Form type
SCHEDULE 13G/A
Filing time
14 May 2025, 16:15:08 UTC
Date of event
31 Mar 2025
Next filing
13 Aug 2025
SEC
View on sec.gov

Quoteable Key Fact

"HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND disclosed 8.8% ownership in SilverBox Corp IV Class A ordinary shares, $0.0001 par value (SBXD) on 31 Mar 2025."

Quick Takeaways

  • HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND filed SCHEDULE 13G/A for SilverBox Corp IV Class A ordinary shares, $0.0001 par value (SBXD).
  • Disclosed ownership: 8.8%.
  • Date of event: 31 Mar 2025.

What Changed

  • No earlier schedule filing is available for direct comparison.
  • Current filing was accepted on 14 May 2025, 16:15.

Why This Matters

  • This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
  • You can verify ownership claims directly against the original SEC filing.

Source Evidence

Backed by Schedule 13D/13G

Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.

See Original Filing

Reporting Managers (1)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Healthcare of Ontario Pension Plan Trust Fund 8.8% 1,800,000 1,800,000 /s/ Abas Kanu VP, HOOPP Compliance Officer