// company-profile
Onto Innovation Inc.
ONTOExchangeNYSESectorMeasuring & Controlling Devices, NECInc.DEFilings131Insiders21
// api This Onto Innovation Inc. insider-trading data is served live by the Form4API insider trading API. Get the same data via API.
// activity-summary
No insider transactions in the last 30 days.
// 90-day insight
Over the last 90 days, Onto Innovation Inc. insiders bought $0 (6 transactions) and sold $373K (3 transactions).
- Most active insider: YALDAEI RAMIL with 2 transactions totaling $229K.
- Largest single sale: $170K by YALDAEI RAMIL on May 15, 2026.
Activity skews bullish — buys outpace sales.
Institutional Ownership
Top 13F-HR holders of Onto Innovation Inc. as of 2026-03-31
Total reported AUM
$8.57B
QoQ change
+34.6%
Reporting period
2026-03-31
#1
BlackRock, Inc.
CIK 2012383
$600.7M
2.9M shares
#2
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
$455.8M
2.2M shares
#3
BlackRock, Inc.
CIK 2012383
$313.8M
1.5M shares
Data source: SEC Form 13F-HR filings. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| May 20, 2026 | SEAMS CHRISTOPHER A | ONTO | Award | 761 | $0.00 | $0K |
| May 20, 2026 | Lynch Susan D | ONTO | Award | 761 | $0.00 | $0K |
| May 20, 2026 | MILLER DAVID BRIAN | ONTO | Award | 761 | $0.00 | $0K |
| May 20, 2026 | SCHWARTZ STEPHEN S | ONTO | Award | 761 | $0.00 | $0K |
| May 20, 2026 | Su May | ONTO | Award | 761 | $0.00 | $0K |
45 more transactions hidden
Free account · No credit card required
Building something? Get API access →
Popular companies on Form4API
Browse insider trading activity for other actively-filed companies.