Sharat Sharan - 22 Dec 2025 Form 4 Insider Report for ON24 INC. (ONTF)

Role: President and Chief Executive, Director, 10%+ Owner
Signature: /s/ Sharan Sharat by Charles Rogerson, as Attorney-in-Fact
Issuer symbol: ONTF
Transactions as of: 22 Dec 2025
Net transactions value: +$85,000
Form type: 4
Filing time: 22 Dec 2025, 16:57:57 UTC
Previous filing: 18 Dec 2025
Next filing: 05 Jan 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Sharan Sharat	President and Chief Executive, Director, 10%+ Owner	C/O ON24, INC., 301 HOWARD STREET, SUITE 1100, SAN FRANCISCO	/s/ Sharan Sharat by Charles Rogerson, as Attorney-in-Fact	22 Dec 2025	0001841654

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ONTF	Common Stock	Options Exercise	$85,000	+50,000	+1.4%	$1.70	3,672,891	22 Dec 2025	Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	ONTF	Stock Option (Right to Buy)	Options Exercise	$0	-50,000	-100%	$0.000000	0	22 Dec 2025	Common Stock	50,000	$1.70	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The options are fully vested and exercisable.