X0508 4 2025-03-11 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 2025-03-11 4 P false 39.00 5.50 A 117387.00 D Common Stock 2025-03-13 4 P false 8661.00 5.6542 A 126048.00 D Shares acquired on the open market on March 11, 2025. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions ranging from $5.59 to $ 5.70 inclusive. The reporting person undertakes to provide to Issuer, any security holder of Issuer, or the staff of the Security and Exchange Commission, upon request, full information regarding the number of shares purchased in each separate price within the range set forth in footnote (2) to this Form 4. Shares acquired on the open market on March 13, 2025. /s/ Arora Anil by Charles Rogerson, as Attorney-in-Fact 2025-03-13