SCHEDULE 13D/A

Impinj Inc

Common Stock · CUSIP: 453204109

Event date: 2025-12-15

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

• SYLEBRA CAPITAL LLCReported CIK 0002003074

  Shares: 1,132,152.00 · Class: 3.76%

• Sylebra Capital LtdReported CIK 0001627436

  Shares: 1,132,152.00 · Class: 3.76%

• Sylebra Capital Management, LtdReported CIK 0001745666

  Shares: 1,132,152.00 · Class: 3.76%

• Gibson Daniel PatrickReported CIK 0001745725

  Shares: 1,132,152.00 · Class: 3.76%

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