Schedule 13G ownership disclosure

Rhythm Pharmaceuticals Inc

COM · CUSIP: 76243J105

Event date: 2025-12-31

Filing-level shares
3,478,669
Percent of class
5.21%
  • PRIMECAP MANAGEMENT CO/CA/

    Shares: 3,478,669 · Class: 5.21%

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

Source: SEC EDGAR filing

Filing metadata

Accession number
0000763212-26-000014
Form type
SCHEDULE 13G/A
Filer
PRIMECAP MANAGEMENT CO/CA/
CIK
CIK 763212
Filed
Feb 12, 2026
Reporting period
Dec 31, 2025
Description
Schedule 13G beneficial ownership

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