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ON24, Inc. (ONTF) institutional ownership

Market cap$348M SectorTechnology
Funds holding · Q1 2026
132
reported ONTF position changes
Top owners · Q2 2026
No disclosed owners are available.
Institutional activity · Q1 2026
Activity unavailable N/A
77 buyers · 55 sellers

ON24, Inc. (ONTF) price and institutional activity

Dates

Q1 2026

$0 bought by 77 investors
Oddo Bhf Asset Management SasFil Ltd +75 more
$0 sold by 55 investors
Indaba Capital Management, L.P.Federated Hermes, Inc. +53 more
Bought Sold Totals per quarter; hover a bar for the names.

ON24, Inc. (ONTF) institutional activity · 77

Investor Type Est. change Change Δ Own Date
Oddo Bhf Asset Management Sas · New
Change +1.6M Date Q1 2026
Oddo Bhf Asset Management Sas New· Q1 2026 +1.6M Q1 2026
Fil Ltd · New
Change +1.4M Date Q1 2026
Fil Ltd New· Q1 2026 +1.4M Q1 2026
Glazer Capital, LLC · Added
Change +1.0M Date Q1 2026
Glazer Capital, LLC Added· Q1 2026 +1.0M Q1 2026
Arrowstreet Capital, Limited Partnership · Added
Change +418K Date Q1 2026
Arrowstreet Capital, Limited Partnership Added· Q1 2026 +418K Q1 2026
Groupe la Francaise · New
Change +365K Date Q1 2026
Groupe la Francaise New· Q1 2026 +365K Q1 2026
Gabelli Funds LLC · New
Change +248K Date Q1 2026
Gabelli Funds LLC New· Q1 2026 +248K Q1 2026
Abc Arbitrage SA · New
Change +247K Date Q1 2026
Abc Arbitrage SA New· Q1 2026 +247K Q1 2026
Credit Industriel Et Commercial · New
Change +247K Date Q1 2026
Credit Industriel Et Commercial New· Q1 2026 +247K Q1 2026
Squarepoint Ops LLC · New
Change +214K Date Q1 2026
Squarepoint Ops LLC New· Q1 2026 +214K Q1 2026
Morgan Stanley · Added
Change +212K Date Q1 2026
Morgan Stanley Added· Q1 2026 +212K Q1 2026
Millennium Management LLC · Added
Change +198K Date Q1 2026
Millennium Management LLC Added· Q1 2026 +198K Q1 2026
Trium Capital LLP · New
Change +177K Date Q1 2026
Trium Capital LLP New· Q1 2026 +177K Q1 2026
Gabelli & Co Investment Advisers, Inc. · New
Change +171K Date Q1 2026
Gabelli & Co Investment Advisers, Inc. New· Q1 2026 +171K Q1 2026
Alpine Associates Management Inc. · New
Change +147K Date Q1 2026
Alpine Associates Management Inc. New· Q1 2026 +147K Q1 2026
Oxford Asset Management LLP · New
Change +112K Date Q1 2026
Oxford Asset Management LLP New· Q1 2026 +112K Q1 2026
Data through Q1 2026 · filed Jun 2, 2026
15 of 77

Famous investor activity in ON24, Inc. (ONTF)

ON24, Inc. (ONTF) insider trading

Company insiders, action and economics first; trade and filed dates last.
Dates
Insider Title Type Price Qty Value Owned ΔOwn Trade date Filed date
Lynrock Lake LP · 10% Owner Other Form 4 events -$67M
Price $8.10 Qty -8.3M Owned 0 Trade date Apr 1, 2026 Filed date Apr 2, 2026
Lynrock Lake LP 10% Owner Other Form 4 events $8.10 -8.3M -$67M 0 Apr 1, 2026 Apr 2, 2026
Lynrock Lake LP · 10% Owner Shares transferred outside the market (D), often for tax or as a gift, not a market sale -$1.1M
Price $8.10 Qty -141K Owned 0 Trade date Apr 1, 2026 Filed date Apr 2, 2026
Lynrock Lake LP 10% Owner Shares transferred outside the market (D), often for tax or as a gift, not a market sale $8.10 -141K -$1.1M 0 Apr 1, 2026 Apr 2, 2026
Zingale Anthony · Director Shares transferred outside the market (D), often for tax or as a gift, not a market sale -137K
Owned 0 Trade date Apr 1, 2026 Filed date Apr 2, 2026
Zingale Anthony Director Shares transferred outside the market (D), often for tax or as a gift, not a market sale -137K 0 Apr 1, 2026 Apr 2, 2026
Mitchell Ronald Paul · Director Shares transferred outside the market (D), often for tax or as a gift, not a market sale -141K
Owned 0 Trade date Apr 1, 2026 Filed date Apr 2, 2026
Mitchell Ronald Paul Director Shares transferred outside the market (D), often for tax or as a gift, not a market sale -141K 0 Apr 1, 2026 Apr 2, 2026
Arora Anil · Director Shares transferred outside the market (D), often for tax or as a gift, not a market sale -158K
Owned 0 Trade date Apr 1, 2026 Filed date Apr 2, 2026
Arora Anil Director Shares transferred outside the market (D), often for tax or as a gift, not a market sale -158K 0 Apr 1, 2026 Apr 2, 2026
Anania Teresa · Director Shares transferred outside the market (D), often for tax or as a gift, not a market sale -141K
Owned 0 Trade date Apr 1, 2026 Filed date Apr 2, 2026
Anania Teresa Director Shares transferred outside the market (D), often for tax or as a gift, not a market sale -141K 0 Apr 1, 2026 Apr 2, 2026
Trempont Dominique · Director 4 operations -330K
Owned 0 Trade date Apr 1, 2026 Filed date Apr 2, 2026
Trempont Dominique Director 4 operations -330K 0 Apr 1, 2026 Apr 2, 2026
Zwarenstein Barry · Director 2 operations -265K
Owned 0 Trade date Apr 1, 2026 Filed date Apr 2, 2026
Zwarenstein Barry Director 2 operations -265K 0 Apr 1, 2026 Apr 2, 2026
Vattuone Steven · CFO 3 operations -612K
Owned 0 Trade date Apr 1, 2026 Filed date Apr 2, 2026
Vattuone Steven CFO 3 operations -612K 0 Apr 1, 2026 Apr 2, 2026
Vattuone Steven · CFO Grant (A) 80K
Owned 512K Trade date Apr 1, 2026 Filed date Apr 2, 2026
Vattuone Steven CFO Grant (A) 80K 512K Apr 1, 2026 Apr 2, 2026
Sahasi Jayesh · Officer 6 operations -1.0M
Owned 0 Trade date Apr 1, 2026 Filed date Apr 2, 2026
Sahasi Jayesh Officer 6 operations -1.0M 0 Apr 1, 2026 Apr 2, 2026
Sahasi Jayesh · Officer Grant (A) 61K
Owned 739K Trade date Apr 1, 2026 Filed date Apr 2, 2026
Sahasi Jayesh Officer Grant (A) 61K 739K Apr 1, 2026 Apr 2, 2026
Blackie James · Officer 7 operations -1.1M
Owned 0 Trade date Apr 1, 2026 Filed date Apr 2, 2026
Blackie James Officer 7 operations -1.1M 0 Apr 1, 2026 Apr 2, 2026
Blackie James · Officer Grant (A) 59K
Owned 540K Trade date Apr 1, 2026 Filed date Apr 2, 2026
Blackie James Officer Grant (A) 59K 540K Apr 1, 2026 Apr 2, 2026
Sharan Sharat · Director 6 operations -5.5M
Owned 0 Trade date Apr 1, 2026 Filed date Apr 2, 2026
Sharan Sharat Director 6 operations -5.5M 0 Apr 1, 2026 Apr 2, 2026
15 of 89
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ON24, Inc. (ONTF) activist and large shareholders

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
Lynrock Lake LP 7.3M
% of shares outstanding 17.7% Filing date Jan 16, 2024
Lynrock Lake LP 7.3M 17.7% Jan 16, 2024
Indaba Capital Management, L.P. 3.5M
% of shares outstanding 7.4% Filing date Feb 14, 2022
Indaba Capital Management, L.P. 3.5M 7.4% Feb 14, 2022
BlackRock Inc. 2.7M
% of shares outstanding 6.4% Filing date Jan 29, 2024
BlackRock Inc. 2.7M 6.4% Jan 29, 2024
Vanguard Group Inc 2.4M
% of shares outstanding 5.8% Filing date Feb 13, 2024
Vanguard Group Inc 2.4M 5.8% Feb 13, 2024
Greenhouse Funds Lllp 400K
% of shares outstanding 1.0% Filing date Feb 14, 2024
Greenhouse Funds Lllp 400K 1.0% Feb 14, 2024
Goldman Sachs Group Inc 68K
% of shares outstanding 0.1% Filing date Feb 8, 2023
Goldman Sachs Group Inc 68K 0.1% Feb 8, 2023
Sharat Sharan 0
% of shares outstanding 0.0% Filing date Apr 2, 2026
Sharat Sharan 0 0.0% Apr 2, 2026
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ON24, Inc. (ONTF) ownership FAQ

Who owns ONTF?

132 reporting institutions disclosed ONTF position changes in the Q1 2026 snapshot.

How is institutional activity calculated?

For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.

What are activist and large shareholder filings?

An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.

Where does this data come from?

Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.

Why are ownership reports delayed?

Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.

How are missing table values shown?

A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.