ON24, Inc.
ON24, Inc. (ONTF) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · ONTF · as of Mar 31, 2025
Ownership Breakdown
99
Institutional Holders
▼ 13 vs Q4
$154.24M
Total Inst. Value
▼ $35.88M vs Q4
42.99M
Shares Outstanding
freeFloat 84.45%
29.66M
13F Shares Held
▲ 230,268 vs Q4
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
ONTF largest shareholders · institutional ownership
Q1 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
LYNROCK LAKE LP services-prepackaged software | 7.66M | 18.20% | 18.20% | $39.83B | May 15, 2025 | ▲ 329.7K |
INDABA CAPITAL MANAGEMENT, L.P. services-prepackaged software | 4.24M | 10.07% | 10.07% | $22.05B | May 15, 2025 | — held |
VANGUARD GROUP INC services-prepackaged software | 2.57M | 6.10% | 6.10% | $13.34B | May 9, 2025 | ▲ 16.3K |
BLACKROCK, INC. services-prepackaged software | 2.44M | 5.80% | 5.80% | $12.69B | May 2, 2025 | ▲ 52.4K |
DIMENSIONAL FUND ADVISORS LP services-prepackaged software | 1.44M | 3.43% | 3.43% | $7.50B | May 13, 2025 | ▼ 5.1K |
JPMORGAN CHASE & CO services-prepackaged software | 1.43M | 3.40% | 3.40% | $7.44B | May 12, 2025 | ▲ 610.1K |
FEDERATED HERMES, INC. services-prepackaged software | 1.17M | 2.77% | 2.77% | $6.07B | May 8, 2025 | ▼ 50 |
ACADIAN ASSET MANAGEMENT LLC services-prepackaged software | 830.9K | 1.97% | 1.97% | $4.32B | May 21, 2025 | ▲ 127.0K |
STATE STREET CORP services-prepackaged software | 762.1K | 1.81% | 1.81% | $3.96B | May 15, 2025 | ▲ 8.9K |
GEODE CAPITAL MANAGEMENT, LLC services-prepackaged software | 749.9K | 1.78% | 1.78% | $3.90B | May 13, 2025 | ▲ 10.1K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q1 2025 vs prior quarter
Q1 2025
26
Increased
+1.68M shares1
New Positions
first time holders15
Decreased
−403.0K shares0
Sold Out
fully exitedNet shares change (top 50)
+1.28M
+1.68M / −403.0K
Net new holders
+12
1 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
ONTF insider trading · insider activity
Source: SEC Form 4
4
Buy transactions
30
Sell transactions
0.13
Buy/Sell ratio
$17M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Lynrock Lake LP 10 percent owner | Apr 1, 2026 | D-Return | 141,095 | $8.10 | $1.14M | 0 | Form 4 ↗ |
Lynrock Lake LP 10 percent owner | Apr 1, 2026 | U-Tender | 8,293,974 | $8.10 | $67.18M | 0 | Form 4 ↗ |
ZINGALE ANTHONY director | Apr 1, 2026 | D-Return | 137,265 | $8.10 | $1.11M | 0 | Form 4 ↗ |
Mitchell Ronald Paul director | Apr 1, 2026 | D-Return | 141,095 | $8.10 | $1.14M | 0 | Form 4 ↗ |
Arora Anil director | Apr 1, 2026 | D-Return | 157,903 | $8.10 | $1.28M | 0 | Form 4 ↗ |
ANANIA TERESA director | Apr 1, 2026 | D-Return | 141,095 | $8.10 | $1.14M | 0 | Form 4 ↗ |
Trempont Dominique director | Apr 1, 2026 | D-Return | 276,389 | $8.10 | $2.24M | 0 | Form 4 ↗ |
Trempont Dominique director | Apr 1, 2026 | D-Return | 20,000 | $13.33 | $266.6K | 0 | Form 4 ↗ |
Trempont Dominique director | Apr 1, 2026 | D-Return | 12,131 | $1.35 | $16.4K | 0 | Form 4 ↗ |
Trempont Dominique director | Apr 1, 2026 | D-Return | 21,000 | $1.23 | $25.8K | 0 | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
ON24, Inc. (ONTF) is primarily owned by institutional investors, who hold approximately 69.0% of total shares outstanding. Company insiders own approximately 15.55%, while retail and public investors account for the remaining 15.46%.
The largest institutional shareholder of ON24, Inc. is LYNROCK LAKE LP, holding approximately 7.66 million shares — equal to 18.20% of outstanding shares — as of March 31, 2025.
A total of 99 institutional investors currently hold ONTF stock, with a combined institutional value of approximately $154,238,131 as of the most recent 13F filing period.
Frequently asked questions
ONTF ownershipON24, Inc. (ONTF) is primarily owned by institutional investors, who hold approximately 69.0% of shares. The largest shareholder is LYNROCK LAKE LP with a 18.20% stake. Company insiders hold 15.55%. Data sourced from SEC Form 13F as of March 31, 2025.