ON24 (ONTF) investor relations material

Executive summary

• A special meeting is scheduled for March 26, 2026, to vote on the proposed merger with Cvent Atlanta, LLC, where ON24 will become a wholly-owned subsidiary of Parent following the merger.

• Supplemental proxy disclosures were issued in response to shareholder litigation alleging insufficient information in the original proxy statement.

• Forward-looking statements highlight risks related to merger completion, regulatory approvals, litigation, and potential disruption to business operations.

Voting matters and shareholder proposals

• Stockholders are being asked to vote on the adoption of the Merger Agreement at the special meeting.

• Litigation from shareholders seeks to enjoin the merger or recover damages if it proceeds, prompting additional disclosures.

Board of directors and corporate governance

• No negotiations regarding management participation or employment in the surviving corporation occurred prior to signing the Merger Agreement.

• Cvent's proposal was not conditioned on management participation or employment.