ONTF · Insider Trading

ON24, Inc.

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Every open-market purchase and sale reported by ONTF officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.

Form 4 Filings

most recent

Open-Market Buys

code P

Sales

code S

Reporting Insiders

current holders

ONTF — Recent Form 4 Transactions (latest 2026-04-02)

Filed	Insider	Role	Type	Shares	Value
2026-04-02	Anthony Zingale	Director	D	−137,265	—
2026-04-02	Teresa Anania	Director	D	−141,095	—
2026-04-02	Barry Zwarenstein	Director	D	−154,586	—
2026-04-02	Ronald Paul Mitchell	Director	D	−141,095	—
2026-04-02	Jayesh Sahasi	EV President, Product and CTO	MIXED	−677,132	—
2026-04-02	Cynthia Paul	Director	MIXED	−25,305,207	−$204.97M
2026-04-02	Steven Vattuone	Chief Financial Officer	MIXED	−432,001	—
2026-04-02	Anil Arora	Director	D	−157,903	—
2026-04-02	Dominique Trempont	Director	D	−276,389	—
2026-04-02	Sharat Sharan	President and Chief Executive	MIXED	−3,718,512	—
2026-04-02	James Blackie	Chief Revenue Officer	MIXED	−480,935	—
2026-03-24	Sharat Sharan	President and Chief Executive	Sell	−17,171	−$138.49K
2026-03-24	Jayesh Sahasi	EV President, Product and CTO	Sell	−3,662	−$29.54K
2026-03-24	James Blackie	Chief Revenue Officer	Sell	−3,117	−$25.14K
2026-03-24	Steven Vattuone	Chief Financial Officer	Sell	−3,429	−$27.66K
2026-03-05	Steven Vattuone	Chief Financial Officer	Sell	−22,013	−$176.82K
2026-03-02	Sharat Sharan	President and Chief Executive	MIXED	+110,108	−$125.61K
2026-03-02	Steven Vattuone	Chief Financial Officer	MIXED	+4,789	−$183.33K
2026-03-02	Jayesh Sahasi	EV President, Product and CTO	MIXED	+7,943	−$173.18K
2026-03-02	James Blackie	Chief Revenue Officer	MIXED	+4,880	−$162.45K
2026-02-12	Steven Vattuone	Chief Financial Officer	Sell	−422	−$3.34K
2026-02-10	Jayesh Sahasi	EV President, Product and CTO	MIXED	+324	−$1.98K
2026-02-10	Sharat Sharan	President and Chief Executive	MIXED	+3,016	−$18.32K
2026-02-10	James Blackie	Chief Revenue Officer	MIXED	+311	−$1.90K
2026-02-10	Steven Vattuone	Chief Financial Officer	MIXED	+422	−$2.58K
2026-01-05	Sharat Sharan	President and Chief Executive	Sell	−50,332	−$401.14K
2026-01-02	Jayesh Sahasi	EV President, Product and CTO	Sell	−34,753	−$277.43K
2026-01-02	James Blackie	Chief Revenue Officer	MIXED	—	−$111.52K
2026-01-02	Steven Vattuone	Chief Financial Officer	Sell	−80,000	−$638.74K
2025-12-22	Sharat Sharan	President and Chief Executive	M	+50,000	+$85.00K
2025-12-18	Sharat Sharan	President and Chief Executive	MIXED	+9,744	−$62.30K
2025-12-10	Steven Vattuone	Chief Financial Officer	Sell	−7,010	−$42.33K
2025-12-03	James Blackie	Chief Revenue Officer	Sell	−22,550	−$128.07K
2025-12-03	Jayesh Sahasi	EV President, Product and CTO	Sell	−24,053	−$136.60K
2025-12-03	Steven Vattuone	Chief Financial Officer	Sell	−35,717	−$204.27K
2025-11-25	Sharat Sharan	President and Chief Executive	MIXED	+21,248	−$123.25K
2025-11-24	James Blackie	Chief Revenue Officer	Sell	−4,659	−$24.68K
2025-11-24	Jayesh Sahasi	EV President, Product and CTO	Sell	−4,099	−$21.72K
2025-11-24	Steven Vattuone	Chief Financial Officer	Sell	−8,213	−$43.46K
2025-10-20	Sharat Sharan	President and Chief Executive	MIXED	+21,366	−$127.35K
2025-10-02	Sharat Sharan	President and Chief Executive	Sell	−50,330	−$286.00K
2025-09-17	Sharat Sharan	President and Chief Executive	MIXED	+21,300	−$130.92K
2025-09-09	Steven Vattuone	Chief Financial Officer	Sell	−29,562	−$163.87K
2025-09-09	James Blackie	Chief Revenue Officer	Sell	−6,782	−$37.60K
2025-09-09	Jayesh Sahasi	EV President, Product and CTO	Sell	−8,289	−$45.96K
2025-09-04	James Blackie	Chief Revenue Officer	Sell	−9,455	−$52.13K
2025-09-04	Jayesh Sahasi	EV President, Product and CTO	Sell	−11,554	−$63.71K
2025-09-04	Steven Vattuone	Chief Financial Officer	Sell	−13,165	−$72.59K
2025-08-22	James Blackie	Chief Revenue Officer	Sell	−3,283	−$17.12K
2025-08-22	Steven Vattuone	Chief Financial Officer	Sell	−8,211	−$42.98K

ONTF — Current Insider Holders

Insider	Role	Shares Held	Value
LYNROCK LAKE PARTNERS LLC	10%+ Owner	8,369,807	$67.80M
Steven Vattuone	Chief Financial Officer	511,936	$4.15M
Sharat Sharan	President and Chief Executive	92,500	$749.25K

ONTF Insider Trading FAQ

Who are the insiders at ONTF?

3 officers, directors and 10%+ beneficial owners currently report holdings in ONTF via SEC Form 4.

Are ONTF insiders buying or selling?

Across the 50 most recent Form 4 filings for ONTF, 0 were open-market purchases (code P) and 25 were sales (code S). Sales frequently reflect scheduled 10b5-1 plans or tax withholding rather than a view on the stock.

How current is ONTF insider data?

Form 4 must be filed within two business days of the transaction, so this is close to real time. The most recent ONTF filing is dated 2026-04-02.

How to read Form 4 activity

Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.

Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.

Full filing history and per-insider positions are on the ONTF quote page; the site-wide leaderboard is on the insider transactions hub.