Onto Innovation (ONTO) Insider Trading & Ownership $105.46 -0.47 (-0.44%) Closing price 03:59 PM EasternExtended Trading$107.30 +1.84 (+1.74%) As of 04:10 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. Add Compare Share Share Insider Trades Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock Onto Innovation (NYSE:ONTO) Insider Buying and Selling ActivityCurrentInsider OwnershipPercentage0.63%Number OfInsiders Buying(Last 12 Months)0Number OfInsiders Selling(Last 12 Months)2Amount OfInsider Selling(Last 12 Months)$18.45M Get ONTO Insider Trade Alerts Want to know when executives and insiders are buying or selling Onto Innovation stock? 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Email Address ONTO Insider Buying and Selling by Quarter Onto Innovation Insider and Congressional Trades History Insiders and Members of Congress Insiders Only Members of Congress Only Transaction Type Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year 2 Years 3 Years Time Frame Start Date End Date Export to Excel Transaction DateNameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionDetails5/12/2025Robert Bresnahan, Jr.U.S. Congress Member (R-PA)Sell$93.29$1,001 - $15,0005/9/2025Robert Bresnahan, Jr.U.S. Congress Member (R-PA)Sell$88.50$1,001 - $15,0001/21/2025Michael P PlisinskiCEOSell35,000$219.19$7,671,650.00 1/16/2025Michael P PlisinskiCEOSell30,000$211.24$6,337,200.00 1/15/2025Srinivas VedulaSVPSell827$205.00$169,535.00 1/14/2025Michael P PlisinskiCEOSell20,000$200.19$4,003,800.00 9/3/2024Srinivas VedulaSVPSell1,275$207.24$264,231.00 (Data available from 1/1/2013 forward) ONTO Insider Trading Activity - Frequently Asked Questions Who is on Onto Innovation's Insider Roster? The list of insiders at Onto Innovation includes David Brian Miller, Ju Jin, Mark Slicer, Michael P Plisinski, Robert Fiordalice, Srinivas Vedula, and Yoon Ah Oh. Learn more on insiders at ONTO. What percentage of Onto Innovation stock is owned by insiders? 0.63% of Onto Innovation stock is owned by insiders. Learn more on ONTO's insider holdings. Which Onto Innovation insiders have been selling company stock? The following insiders have sold ONTO shares in the last 24 months: David Brian Miller ($477,372.00), Mark Slicer ($490,853.69), Michael P Plisinski ($28,530,200.00), Robert Fiordalice ($882,464.31), Srinivas Vedula ($952,131.40), and Yoon Ah Oh ($770,382.60). How much insider selling is happening at Onto Innovation? Insiders have sold a total of 178,800 Onto Innovation shares in the last 24 months for a total of $32,103,404.00 sold. Which members of congress are trading Onto Innovation? Robert Bresnahan, Jr. (R-PA) has sold shares of Onto Innovation in the last year totaling $16,000. Onto Innovation Key ExecutivesMr. Michael P. Plisinski (Age 54)CEO & Director Compensation: $1.32MMr. Mark R. Slicer (Age 52)Senior VP & CFO Compensation: $709.82kMr. Ramil Yaldaei (Age 59)Chief Operating Officer Compensation: $480.96kMs. Yoon Ah E. Oh (Age 42)VP, General Counsel & Company Secretary Compensation: $572.56kDr. Srinivas Vedula Ph.D. (Age 51)Senior Vice President of Customer Success Group Compensation: $483.89kMr. Michael SheafferSenior Director of Investor Relations & ESG ReportingDr. Michel RosaChief Marketing Officer & Senior VP of StrategyMr. Robert Fiordalice (Age 62)Senior VP & GM of Metrology Business Unit Compensation: $518.66k More Insider Trading Tools from MarketBeat Related Companies ACLS Insider Trades AMAT Insider Trades FORM Insider Trades KLAC Insider Trades LRCX Insider Trades MKSI Insider Trades UCTT Insider Trades VECO Insider Trades ENTG Insider Trades AMKR Insider Trades Insider Tracking Tools CEO Purchases/Sales CFO Purchases/Sales Top Insider Buying Stocks Top Insider Selling Stocks Insider Trades Screener Insider Trades Newsletter Congressional Stock Trades Insider Trading By Country U.S. Insider Trading Activity Canadian Insider Trading Activity U.K. Insider Trading Activity Australia Insider Trading Activity Latest Articles Buy, Sell, or Hold? Insiders Pile Into These 3 Healthcare StocksInsiders Trade Millions in NVIDIA-Linked Navitas, Hims, & Shift45 Stocks Insiders Are Selling That Analysts Say BuyStrategy Insiders Buy In While Analysts Predict Big UpsideThe Bottom Is in For These 3 Small-Cap Stocks Insiders Are Buying This page (NYSE:ONTO) was last updated on 8/21/2025 by MarketBeat.com Staff From Our PartnersTrump’s national nightmare is herePorter Stansberry and Jeff Brown say a new U.S. national emergency is already underway — and it could trigger ...Porter & Company | SponsoredMarket Panic: Trump Just Dropped a Bomb on Your Stockstock Market Panic: Trump Just Dropped a Bomb on Your Stocks The market is in freefall—and Trump's new tarif...American Alternative | SponsoredAlex’s “Next Magnificent Seven” stocksThe original “Magnificent Seven” turned $7K into $1.18 million. 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