POWER OF ATTORNEY FOR SECTION 16 REPORTING PURPOSES

Know all by these presents, that the undersigned hereby
constitutes and appoints each of Steven Vattuone, Amit Khetan,
William Weesner, Charles Rogerson and Bianca Jean LaCaille, or
any of them signing singly, and with full power of
substitution, as the undersigned's true and lawful attorney-
in-fact to:

(1)	prepare, execute for and on behalf of the undersigned Forms
3, 4, and 5 in accordance with Section 16(a) of the Securities
Exchange Act of 1934 and the rules thereunder, and any other
forms or reports the undersigned may be required to file in
connection with the undersigned's ownership, acquisition, or
disposition of securities of ON24, Inc. (the "Company"),

(2)	do and perform any and all acts for and on behalf of the
undersigned which may be necessary or desirable to complete
and execute any such Form 3, 4, or 5, or other form or report,
and timely file such form or report with the United States
Securities and Exchange Commission and any stock exchange or
similar authority, and

(3)	take any other action of any type whatsoever in connection
with the foregoing, which, in the opinion of such attorney-in-
fact, may be of benefit to, in the best interest of, or
legally require d by, the undersigned, it being understood
that the documents executed by such attorney-in-fact on behalf
of the undersigned pursuant to this Power of Attorney shall be
in such form and shall contain such terms and conditions as
such attorney-in-fact may approve in such attorney-in-fact's
discretion.

The undersigned hereby grants to each such attorney-in-fact
full power and authority to do and perform any and every act
and thing whatsoever requisite, necessary, or proper to be
done in the exercise of any of the rights and powers herein
granted, as fully to all intents and purposes as the
undersigned might or could do if personally present, with full
power of substitution or revocation, hereby ratifying and
confirming all that such attorney-in-fact, or such attorney-
in-fact's substitute or substitutes, shall lawfully do or
cause to be done by virtue of this power of attorney and the
rights and powers herein granted. The undersigned acknowledges
that the foregoing attorney-in-fact, in serving in such
capacity at the request of the undersigned, is not assuming,
nor is the Company assuming, any of the undersigned's
responsibilities to comply with Section 16 of the Securities
Exchange Act of 1934.

This Power of Attorney shall remain in full force and effect
until the undersigned is no longer required to file Forms 3,
4, and 5 with respect to the undersigned's holdings of and
transactions in securities issued by the Company, unless
earlier revoked by the undersigned in a signed writing
delivered to the foregoing attorneys-in-fact.

IN WITNESS WHEREOF, the undersigned has caused this Power of
Attorney to be executed as of April 11, 2022.


Anthony Zingale