SCHEDULE: Vanguard Amends ON24 Stake, Citing Internal Realignment

The Vanguard Group filed an amendment to its Schedule 13G, disclosing a 4.67% beneficial ownership in ON24 Inc. and an internal realignment affecting future reporting.

Summary

• The Vanguard Group reported beneficial ownership of 1,978,132 shares of ON24 Inc. common stock as of December 31, 2025.
• This represents 4.67% of ON24 Inc.'s class of securities.
• Vanguard holds sole dispositive power over 0 shares and shared dispositive power over 1,978,132 shares.
• Vanguard holds sole voting power over 0 shares and shared voting power over 247,168 shares.
• An internal realignment at The Vanguard Group, Inc. on January 12, 2026, resulted in the company no longer performing portfolio management services or administering proxy voting.
• Following the realignment, certain subsidiaries or business divisions of Vanguard are expected to report beneficial ownership separately (on a disaggregated basis) from The Vanguard Group, Inc.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral filing, primarily a routine disclosure of beneficial ownership and an internal organizational change at Vanguard, with no direct positive or negative implications for ON24 Inc.'s operational or financial performance.

Future Outlook

The Vanguard Group anticipates that certain subsidiaries or business divisions will report beneficial ownership separately (on a disaggregated basis) from The Vanguard Group, Inc. in reliance on SEC Release No. 34-39538, following an internal realignment.

Industry Context

StockSavvy.ai notes that Schedule 13G filings are routine disclosures by institutional investors holding less than 5% of a company's stock, indicating passive investment intent. The internal realignment at Vanguard reflects an organizational change within a major asset manager, which is common in the financial industry to optimize operations or comply with regulatory interpretations.

Stakeholder Impact

• Shareholders of ON24 Inc. will observe a slight change in how Vanguard's beneficial ownership is reported, moving from a consolidated view to a disaggregated one by its subsidiaries, which is primarily an administrative change.

Next Steps

• Certain subsidiaries or business divisions of The Vanguard Group, Inc. are expected to report beneficial ownership separately from The Vanguard Group, Inc. in future filings.

Key Dates

Keywords

ON24 Inc, Vanguard Group, Schedule 13G, Beneficial Ownership, Common Stock, Institutional Investor, SEC Filing, Investment Management