SCHEDULE 13D/A

ON24 Inc

Common Stock, par value $0.0001 per share · CUSIP: 68339B104

Event date: 2025-06-06

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

• Lynrock Lake LPReported CIK 0001734341

  Shares: 8,260,424.00 · Class: 19.4%

• Lynrock Lake Partners LLCReported CIK 0001771092

  Shares: 8,260,424.00 · Class: 19.4%

• Cynthia PaulReported CIK 0001736572

  Shares: 8,350,499.00 · Class: 19.6%

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