SCHEDULE 13G/A

CION Grosvenor Infrastructure Master Fund, LLC

Common Shares of Beneficial Interest · CUSIP: 000000000

Event date: 2025-12-31

Reporting persons may disclose overlapping interests. Their amounts are shown individually and are not added into a filing total.

Filing-level shares

Unavailable

Percent of class

Unavailable

• Commonwealth of Pennsylvania, Public School Employees' Retirement System

  Shares: 262,968.12 · Class: 86.9%

• GCM Diversified Infrastructure, L.P.

  Shares: 264,289.57 · Class: 87.3%

Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.