Schedule 13D ownership disclosure

ENZON INC

Common Stock, par value $0.01 per share · CUSIP: 293904108

Event date: 2026-01-30

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
  • CARL C ICAHNReported CIK 0000921669

    Shares: 36,056,636 · Class: 48.6%

  • ICAHN ENTERPRISES HOLDINGS L.P.Reported CIK 0001034563

    Shares: 36,056,636 · Class: 48.6%

  • ICAHN ENTERPRISES G.P. INC.Reported CIK 0001257324

    Shares: 36,056,636 · Class: 48.6%

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

Source: SEC EDGAR filing

Filing metadata

Accession number
0001193125-26-032170
Form type
SCHEDULE 13D/A
Filer
ENZON PHARMACEUTICALS, INC.
CIK
CIK 727510
Filed
Jan 30, 2026
Reporting period
Jan 30, 2026
Description
Schedule 13D beneficial ownership

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