NYSE:ONTO

Onto Innovation Stock Insider Trading

Technology > Semiconductors

Buy ONTO

*Your capital is at risk

$279.98

+1.96 (+0.705%)

At Close: Jun 03, 2026

Onto Innovation Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be positive at 69.49. In total, the insiders bought 310.66K and sold 62.19K ONTO shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.

Insider Power (Last 100 transactions)	69.49
● Buy	310.66K shares
● Sell	62.19K shares
73% Buy Activity Negligible or No Correlation
Buy Signal Medium Confidence Mar 02, 2026 Analysis Breakdown: Strongly supported by a very high Insider Power Score of 69.49. Confidence increased due to high data reliability score of 100.

Historical Insider Trades

Date	Type	Person	Role	Amount
Jun 16, 2025 Buy	Common Stock J-Other	Chen Shirley Officer	Officer	0 Value: $0
Jun 16, 2025 Buy	Common Stock J-Other	Roberts Brian K Officer	Officer	0 Value: $0
Jun 16, 2025 Buy	Common Stock J-Other	Roberts Brian K Officer	Officer	0 Value: $0
Jun 12, 2025 Buy	Common Stock J-Other	Slicer Mark Officer	Officer	0 Value: $0
Jun 12, 2025 Buy	Common Stock J-Other	Slicer Mark Officer	Officer	0 Value: $0
Jun 02, 2025 Buy	Common Stock A-Award	Dolev Ido EVP, Prod Solutions Grp	Officer	5 391 Value: $500.1K
Jun 02, 2025 Buy	Common Stock A-Award	Dolev Ido EVP, Prod Solutions Grp	Officer	21 562 Value: $2.00M
Jun 02, 2025 Buy	Performance Stock Unit A-Award	Dolev Ido EVP, Prod Solutions Grp	Officer	2 695 Value: $250.0K
Jun 02, 2025 Buy	Performance Stock Unit A-Award	Dolev Ido EVP, Prod Solutions Grp	Officer	2 695 Value: $250.0K
Jun 02, 2025 Buy	Common Stock A-Award	Dolev Ido EVP, Prod Solutions Grp	Officer	21 562 Value: $2.00M
Jun 02, 2025 Buy	Common Stock A-Award	Dolev Ido EVP, Prod Solutions Grp	Officer	5 391 Value: $500.1K
May 21, 2025 Buy	Common Stock J-Other	Tsingos Christine A	Director	0 Value: $0
May 21, 2025 Buy	Common Stock J-Other	Berlinghieri Leo	Director	0 Value: $0
May 21, 2025 Buy	Common Stock A-Award	Su May Director	Director	2 114 Value: $200.0K
May 21, 2025 Buy	Common Stock A-Award	Seams Christopher A Director	Director	2 114 Value: $200.0K
May 21, 2025 Buy	Common Stock A-Award	Schwartz Stephen S Director	Director	2 114 Value: $200.0K
May 21, 2025 Buy	Common Stock A-Award	Miller David Brian Director	Director	2 114 Value: $200.0K
May 21, 2025 Buy	Common Stock A-Award	Lynch Susan D Director	Director	2 114 Value: $200.0K
May 21, 2025 Buy	Common Stock A-Award	Kelley Stephen Douglas Director	Director	2 114 Value: $200.0K
May 21, 2025 Buy	Common Stock A-Award	Kelley Stephen Douglas Director	Director	2 114 Value: $200.0K
May 21, 2025 Buy	Common Stock A-Award	Lynch Susan D Director	Director	2 114 Value: $200.0K
May 21, 2025 Buy	Common Stock A-Award	Miller David Brian Director	Director	2 114 Value: $200.0K
May 21, 2025 Buy	Common Stock A-Award	Schwartz Stephen S Director	Director	2 114 Value: $200.0K
May 21, 2025 Buy	Common Stock A-Award	Seams Christopher A Director	Director	2 114 Value: $200.0K
May 21, 2025 Buy	Common Stock A-Award	Su May Director	Director	2 114 Value: $200.0K

About Insider Power

Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.

It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%^* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.

While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.

* October 6th, 2025 - Tested on 5562 stocks

ABOUT ONTO INNOVATION INC.

Onto Innovation Inc. engages in the design, development, manufacture, and support of process control tools that performs macro defect inspection and 2D/3D optical metrology, lithography systems, and process control analytical software worldwide. It offers process and yield management solutions, and device packaging and test facilities through standalone systems for macro-defect inspection, packaging lithography, probe card test and analysis, and ...

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