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
Mar 01, 2026 Buy	Common Stock M-Exempt	Plisinski Michael P Chief Executive Officer	CEO / President	4 597 Value: $1.29M
Mar 01, 2026 Sell	Common Stock F-InKind	Plisinski Michael P Chief Executive Officer	CEO / President	2 222 Value: $479.7K
Mar 01, 2026 Sell	Common Stock F-InKind	Plisinski Michael P Chief Executive Officer	CEO / President	1 925 Value: $415.6K
Mar 01, 2026 Buy	Performance Stock Unit M-Exempt	Plisinski Michael P Chief Executive Officer	CEO / President	5 971 Value: $1.67M
Mar 01, 2026 Buy	Common Stock M-Exempt	Oh Yoon Ah SVP, Gen Counsel & Corp Sec	Officer	724 Value: $202.7K
Mar 01, 2026 Sell	Common Stock F-InKind	Oh Yoon Ah SVP, Gen Counsel & Corp Sec	Officer	307 Value: $66.3K
Mar 01, 2026 Sell	Common Stock F-InKind	Oh Yoon Ah SVP, Gen Counsel & Corp Sec	Officer	267 Value: $57.6K
Mar 01, 2026 Buy	Performance Stock Unit M-Exempt	Oh Yoon Ah SVP, Gen Counsel & Corp Sec	Officer	941 Value: $263.5K
Feb 14, 2026 Sell	Common Stock F-InKind	Plisinski Michael P Chief Executive Officer	CEO / President	3 632 Value: $789.0K
Feb 14, 2026 Sell	Common Stock F-InKind	Plisinski Michael P Chief Executive Officer	CEO / President	8 919 Value: $1.94M
Feb 14, 2026 Buy	Common Stock M-Exempt	Plisinski Michael P Chief Executive Officer	CEO / President	18 445 Value: $5.16M
Feb 14, 2026 Buy	Performance Stock Unit M-Exempt	Plisinski Michael P Chief Executive Officer	CEO / President	11 824 Value: $3.31M
Feb 14, 2026 Buy	Common Stock M-Exempt	Oh Yoon Ah SVP, Gen Counsel & Corp Sec	Officer	3 084 Value: $863.5K
Feb 14, 2026 Sell	Common Stock F-InKind	Oh Yoon Ah SVP, Gen Counsel & Corp Sec	Officer	1 094 Value: $237.6K
Feb 14, 2026 Sell	Common Stock F-InKind	Oh Yoon Ah SVP, Gen Counsel & Corp Sec	Officer	501 Value: $108.8K
Feb 14, 2026 Buy	Performance Stock Unit M-Exempt	Oh Yoon Ah SVP, Gen Counsel & Corp Sec	Officer	1 977 Value: $553.5K
Dec 24, 2025 Sell	Common Stock G-Gift	Plisinski Michael P Chief Executive Officer	CEO / President	25 000 Value: $0
Dec 02, 2025 Sell	Common Stock F-InKind	Dolev Ido EVP, Prod Solutions Grp	Officer	3 183 Value: $490.2K
Oct 03, 2025 Sell	Common Stock F-InKind	Yaldaei Ramil Chief Operating Officer	C-Suite Officer	594 Value: $85.4K
Oct 03, 2025 Sell	Common Stock F-InKind	Yaldaei Ramil Chief Operating Officer	C-Suite Officer	594 Value: $85.4K
Sep 02, 2025 Buy	Common Stock A-Award	Roberts Brian K Chief Financial Officer	C-Suite Officer	21 175 Value: $2.20M
Sep 02, 2025 Buy	Common Stock A-Award	Chen Shirley SVP, Customer Success	Officer	12 994 Value: $1.35M
Sep 02, 2025 Buy	Common Stock A-Award	Chen Shirley SVP, Customer Success	Officer	12 994 Value: $1.35M
Sep 02, 2025 Buy	Common Stock A-Award	Roberts Brian K Chief Financial Officer	C-Suite Officer	21 175 Value: $2.20M
Jun 16, 2025 Buy	Common Stock J-Other	Chen Shirley Officer	Officer	0 Value: $0

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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