ON24 (NYSE: ONTF) CFO executes 422-share 10b5-1 stock sale

Rhea-AI Filing Summary

ON24 Inc.'s Chief Financial Officer, Steven Vattuone, sold 422 shares of ON24 common stock on February 11, 2026, in an open-market transaction at $7.92 per share. After this sale, he directly owned 452,654 shares of ON24 common stock. The transaction was executed under a pre-arranged Rule 10b5-1 trading plan that Vattuone adopted on September 12, 2024, which is designed to allow insiders to sell shares according to a predetermined schedule.

Insider Trade Summary

Net Seller: 422 shares ($3,342)

Net Sell 1 txn

Insider Vattuone Steven

Role Chief Financial Officer

Sold 422 shs ($3K)

Type	Security	Shares	Price	Value
Sale	Common Stock	422	$7.92	$3K

Holdings After Transaction: Common Stock — 452,654 shares (Direct)

Footnotes (1)

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Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Vattuone Steven

(Last) (First) (Middle)

C/O ON24, INC.

301 HOWARD STREET, SUITE 1100

(Street)

SAN FRANCISCO CA 94105

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
ON24 INC. [ ONTF ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Financial Officer

3. Date of Earliest Transaction (Month/Day/Year)
02/11/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	02/11/2026		S(1)		422	D	$7.92	452,654	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The transaction reported in this Form 4 was effected pursuant to a Rule 10B5-1 trading plan adopted by the reporting person on September 12, 2024.

Remarks:

	/s/ Vattuone Steven by Charles Rogerson, as Attorney-in-Fact	02/12/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did ON24 (ONTF) disclose for its CFO?

ON24 reported that Chief Financial Officer Steven Vattuone sold 422 shares of common stock at $7.92 per share. The sale occurred on February 11, 2026, as an open-market transaction under a pre-established Rule 10b5-1 trading plan adopted in September 2024.

How many ON24 (ONTF) shares does CFO Steven Vattuone hold after the sale?

After the reported transaction, CFO Steven Vattuone directly owns 452,654 shares of ON24 common stock. This figure reflects his holdings immediately following the February 11, 2026 open-market sale of 422 shares at $7.92 per share under a Rule 10b5-1 plan.

At what price did ON24 (ONTF) CFO Steven Vattuone sell his shares?

CFO Steven Vattuone sold 422 ON24 common shares at $7.92 per share in an open-market transaction. The sale took place on February 11, 2026 and was carried out pursuant to a Rule 10b5-1 trading plan adopted on September 12, 2024.

Was the ON24 (ONTF) CFO’s stock sale under a Rule 10b5-1 plan?

Yes. The Form 4 states the sale was effected under a Rule 10b5-1 trading plan adopted by CFO Steven Vattuone on September 12, 2024. Such plans pre-schedule trades, allowing insiders to sell shares according to predetermined instructions over time.

What type of transaction did ON24 (ONTF) report for its CFO on Form 4?

ON24 reported an open-market sale of common stock by CFO Steven Vattuone, coded as an “S” transaction. He sold 422 shares at $7.92 per share on February 11, 2026, and held 452,654 shares directly after this planned Rule 10b5-1 trade.