X0609 4 2026-04-01 true 0001110611 ON24 INC. ONTF 0001841671 Blackie James false C/O ON24, INC. 301 HOWARD STREET, SUITE 1100 SAN FRANCISCO CA 94105 false true false false Chief Revenue Officer false Common Stock 2026-04-01 4 A false 59029.00 0.00 A 539964.00 D Common Stock 2026-04-01 4 D false 539964.00 D 0.00 D Stock Option (Right to Buy) 0.99 2026-04-01 4 D false 35696.00 0.00 D 2026-12-09 Common Stock 35696.00 0.00 D Stock Options (Right to buy) 13.33 2026-04-01 4 D false 122727.00 0.00 D 2030-12-11 Common Stock 122727.00 0.00 D Stock Options (Right to buy) 13.33 2026-04-01 4 D false 18273.00 0.00 D 2030-12-11 Common Stock 18273.00 0.00 D Stock Options (Right to buy) 2.00 2026-04-01 4 D false 89271.00 0.00 D 2030-01-16 Common Stock 89271.00 0.00 D Stock Options (Right to buy) 1.79 2026-04-01 4 D false 222588.00 0.00 D 2026-12-09 Common Stock 222588.00 0.00 D Stock Options (Right to buy) 1.23 2026-04-01 4 D false 22916.00 0.00 D 2030-01-16 Common Stock 22916.00 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 except that unvested RSUs remain subject to time-based vesting conditions. 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/ Blackie James by Charles Rogerson, as Attorney-in-Fact 2026-04-02