SCHEDULE 13G

Cardinal Infrastructure Group, Inc.

Common · CUSIP: 14154A102

Event date: 2026-09-30

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

• First Trust Portfolios L.P.

  Shares: 1,370,274.00 · Class: 6.71%

• First Trust Advisors L.P.

  Shares: 1,370,274.00 · Class: 6.71%

• The Charger Corporation

  Shares: 1,370,274.00 · Class: 6.71%

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