SCHEDULE 13D/A

Stagwell Inc

Class A Common Stock · CUSIP: 85256A109

Event date: 2025-04-16

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

• Penn Mark JefferyReported CIK 0001771735

  Shares: 31,098,697.00 · Class: 11.7%

• Stagwell Agency Holdings LLCReported CIK 0001771728

  Shares: 0.00 · Class: 0.0%

• Stagwell Group LLCReported CIK 0001771444

  Shares: 22,296,375.00 · Class: 8.4%

• Stagwell Media LPReported CIK 0001876672

  Shares: 0.00 · Class: 0.0%

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