Schedule 13G ownership disclosure

FIVE9 INC

Common Stock · CUSIP: 338307101

Event date: 2026-09-30

Filing-level shares
6,579,962
Percent of class
8.80%
  • Vanguard Portfolio Management

    Shares: 6,579,962 · Class: 8.80%

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

Source: SEC EDGAR filing

Filing metadata

Accession number
0002100121-26-001060
Form type
SCHEDULE 13G/A
Filer
VANGUARD PORTFOLIO MANAGEMENT LLC
CIK
CIK 2100121
Filed
Oct 30, 2026
Reporting period
Sep 30, 2026
Description
Schedule 13G beneficial ownership

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