X0609 4 2026-04-01 true 0001110611 ON24 INC. ONTF 0001227348 ZWARENSTEIN BARRY false C/O ON24, INC. 301 HOWARD STREET, SUITE 1100 SAN FRANCISCO CA 94105 true false false false false Common Stock 2026-04-01 4 D false 154586.00 D 0.00 D Stock Options (Right to buy) 6.88 2026-04-01 4 D false 110834.00 0.00 D 2030-08-28 Common Stock 110834.00 0.00 D Pursuant to the Agreement and Plan of Merger, dated as of December 29, 2025 (the "Merger Agreement") among the Issuer, Cvent Atlanta, LLC ("Parent"), and Summit Sub Corp. ("Merger Sub"), on April 1, 2026, Merger Sub merged with and into the Issuer, with the Issuer continuing as the surviving company and a wholly-owned subsidiary of Parent (the "Merger"). At the effective time of the Merger, each outstanding share of Issuer common stock was automatically canceled and converted into the right to receive cash in an amount equal to $8.10 per share, without interest, with similar treatment for outstanding RSUs. At the effective time of the Merger, each outstanding option to purchase Issuer common stock was automatically canceled and converted into the right to receive cash in an amount equal to $8.10 less the exercise price per share of such option. /s/ ZWARENSTEIN BARRY by Charles Rogerson, as Attorney-in-Fact 2026-04-02