SCHEDULE 13G/A

Sun Country Airlines Holdings Inc

Common Shares · CUSIP: 866683105

Event date: 2025-03-31

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

• Macquarie Group Limited

  Shares: 2,549,308 · Class: 4.87%

• Macquarie Management Holdings Inc

  Shares: 2,549,028 · Class: 4.87%

• Macquarie Investment Management Business Trust

  Shares: 2,549,028 · Class: 4.87%

• Macquarie Group (US) Holdings No.1 Pty Ltd

  Shares: 280 · Class: 0.00%

• Macquarie Capital (USA) Inc.

  Shares: 280 · Class: 0.00%

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