Onto Innovation Inc
Ownership
Ownership Structure
Who owns Onto Innovation Inc (ONTO)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 79.7% of the shares are freely tradable; institutional investors hold 100.4%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 11.28 | 5,534,265 | +12.2 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 5.59 | 2,743,019 | +0.0 | 03/31/2026 |
| Vanguard Capital Management, LLC | 4.53 | 2,222,852 | +0.0 | 03/31/2026 |
| State Street Corp | 3.06 | 1,499,684 | +2.8 | 03/31/2026 |
| Geode Capital Management, LLC | 2.47 | 1,211,014 | +7.4 | 03/31/2026 |
| Point72 Asset Management, L.P. | 2.45 | 1,203,658 | +212.8 | 03/31/2026 |
| Paradigm Capital Management, Inc. | 2.24 | 1,101,438 | -0.1 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Mid-Cap ETF | 3.55 | 1,742,498 | +0.0 | 08/31/2026 |
| Vanguard MStar Total Stk Mkt Idx Invest | 3.23 | 1,585,146 | +0.3 | 07/31/2026 |
| Vanguard Small Cap Index | 2.33 | 1,142,904 | +0.2 | 07/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Roberts Brian K | Chief Financial Officer | 21,032 | 5,258,000 $ | Sep 2, 2026 | direct |
| Chen Shirley | Senior Vice President of Custo | 14,001 | 3,500,250 $ | Sep 2, 2026 | direct |
| Lynch Susan D | Director | 2,684 | 671,000 $ | Aug 21, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 2, 2026 | Chen Shirley | Senior Vice President of Custo | Other | 1,516 | 254.55 | 385,898 |
| Sep 2, 2026 | Roberts Brian K | Chief Financial Officer | Other | 3,239 | 254.55 | 824,487 |
| Aug 21, 2026 | Lynch Susan D | Director | Sell | 1,000 | 302.30 | 302,300 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: September 17, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.