X0508 4 2025-06-20 false 0001110611 ON24 INC. ONTF 0001336059 Arora Anil C/O ON24, INC. 50 BEALE STREET, 8TH FLOOR SAN FRANCISCO CA 94015 true false false false false Common Stock 2025-06-20 4 A false 31855.00 0.00 A 157903.00 D Represents shares underlying restricted stock units ("RSUs"). The RSUs will vest on the earlier of (i) the date of the following year's Annual Meeting (or the date immediately prior to the next Annual Meeting if the Non-Employee Director's service as a director ends at such meeting due to the director's failure to be re-elected or the director not standing for re-election); or (ii) the first anniversary of the date of the grant. /s/ Arora Anil by Charles Rogerson, as Attorney-in-Fact 2025-06-24