The Filings Report

Onto Innovation Inc. insider trading

ONTOfinancial statementsForm 4 filings on EDGAR95 transactions since Nov 3, 2024

From August 6, 2026 to November 3, 2026, 0 insiders at Onto Innovation Inc. bought $0 of stock in the open market, and 2 sold $902K. Officers and directors accounted for $0 of purchases and $902K of sales. The last reported transaction was an open-market sale by Miller David Brian on September 29, 2026.

The answer card and chart use the same period. Change the range above the chart to update both. Form 4 filings through October 1, 2026; awards, option exercises, tax withholding and gifts are excluded from these totals.

Stock price and insider activity

Daily price candles with insider purchases and sales directly beneath them on the same timeline. Bars show individual days; totals sum all days in the selected period.

ONTO daily priceSplit-adjusted prices in US dollars

Bought $0Sold $902KAug 6, 2026 – Nov 3, 2026

Nov 3, 2026O $200.34 · H $207.71 · L $199.05 · C $202.39Bought $0 (0)Sold $0 (0)
$180$226$272$318$3642026-08-06: open $266.43, high $280.23, low $260.10, close $268.702026-08-07: open $300.00, high $314.22, low $295.00, close $308.302026-08-10: open $316.00, high $316.00, low $291.05, close $291.352026-08-11: open $301.25, high $320.32, low $295.98, close $319.792026-08-12: open $333.13, high $343.58, low $332.51, close $337.352026-08-13: open $334.57, high $342.80, low $327.23, close $337.822026-08-14: open $337.20, high $346.90, low $330.99, close $331.712026-08-17: open $342.10, high $353.84, low $336.87, close $351.162026-08-18: open $332.40, high $335.58, low $310.22, close $315.422026-08-19: open $317.05, high $319.46, low $292.53, close $299.502026-08-20: open $296.00, high $306.62, low $292.35, close $298.842026-08-21: open $303.00, high $303.77, low $286.49, close $293.332026-08-24: open $284.85, high $285.25, low $274.66, close $282.912026-08-25: open $289.76, high $294.69, low $283.60, close $291.622026-08-26: open $291.62, high $294.90, low $285.53, close $291.882026-08-27: open $301.52, high $305.74, low $289.23, close $292.622026-08-28: open $289.51, high $290.77, low $270.33, close $270.792026-08-31: open $276.66, high $276.66, low $265.45, close $267.212026-09-01: open $263.69, high $263.98, low $253.40, close $256.372026-09-02: open $256.67, high $259.01, low $251.06, close $254.552026-09-03: open $249.77, high $256.27, low $244.46, close $252.462026-09-04: open $259.01, high $270.00, low $257.70, close $268.012026-09-08: open $271.63, high $284.24, low $271.63, close $281.112026-09-09: open $278.97, high $288.63, low $277.54, close $278.402026-09-10: open $270.11, high $274.46, low $266.60, close $268.922026-09-11: open $274.00, high $282.08, low $272.00, close $281.262026-09-14: open $256.41, high $263.51, low $249.26, close $250.132026-09-15: open $255.00, high $255.00, low $240.01, close $244.162026-09-16: open $252.37, high $254.98, low $240.20, close $243.642026-09-17: open $254.26, high $256.55, low $249.09, close $250.032026-09-18: open $256.94, high $266.45, low $253.30, close $263.432026-09-21: open $272.00, high $277.14, low $268.27, close $275.982026-09-22: open $273.71, high $284.76, low $273.50, close $283.812026-09-23: open $281.73, high $286.00, low $273.06, close $282.312026-09-24: open $276.16, high $281.04, low $272.26, close $279.732026-09-25: open $281.94, high $290.00, low $281.00, close $287.642026-09-28: open $286.93, high $292.36, low $279.66, close $288.742026-09-29: open $297.00, high $304.78, low $295.90, close $304.692026-09-30: open $304.88, high $311.00, low $297.90, close $307.822026-10-01: open $315.94, high $315.94, low $306.37, close $314.882026-10-02: open $328.89, high $339.04, low $325.89, close $327.772026-10-05: open $327.74, high $330.00, low $319.72, close $325.412026-10-06: open $329.29, high $329.29, low $311.00, close $313.712026-10-07: open $302.73, high $306.37, low $296.01, close $304.402026-10-08: open $297.04, high $306.35, low $288.16, close $292.672026-10-09: open $298.77, high $299.22, low $290.00, close $294.532026-10-12: open $289.87, high $289.87, low $272.62, close $273.742026-10-13: open $266.66, high $271.92, low $256.53, close $263.552026-10-14: open $256.11, high $259.10, low $237.54, close $241.412026-10-15: open $228.76, high $232.16, low $220.22, close $231.952026-10-16: open $229.84, high $232.85, low $219.92, close $220.702026-10-19: open $232.16, high $233.15, low $224.67, close $226.282026-10-20: open $220.20, high $225.12, low $214.65, close $219.622026-10-21: open $226.01, high $228.98, low $219.65, close $222.142026-10-22: open $205.38, high $207.89, low $196.54, close $198.672026-10-23: open $196.72, high $203.87, low $195.19, close $198.682026-10-26: open $200.30, high $208.60, low $196.66, close $203.532026-10-27: open $209.93, high $216.40, low $206.02, close $214.172026-10-28: open $219.92, high $225.54, low $216.74, close $223.682026-10-29: open $220.65, high $229.14, low $219.19, close $221.892026-10-30: open $204.24, high $210.78, low $195.21, close $201.572026-11-02: open $204.98, high $207.56, low $190.26, close $191.402026-11-03: open $200.34, high $207.71, low $199.05, close $202.39Insider purchases / sales · USD$1M$0−$1M2026-08-21: 0 purchases ($0), 1 sales ($302K)2026-09-29: 0 purchases ($0), 1 sales ($600K)Aug 6Aug 28Sep 21Oct 13Nov 3

purchases above zero; sales below. Both use the transaction date and the same dollar scale. Hover, tap, or use arrow keys to inspect a date. Awards, exercises, tax withholding and gifts are excluded.

Dates with prices or insider activity are spaced evenly; empty weekends and holidays are omitted. Prices through Nov 3, 2026. Insider data through Nov 3, 2026. Prices are adjusted for splits; transaction values are reported dollars.

Every transaction

95 transactions from November 3, 2024 to November 3, 2026, newest first. Open-market purchases and sales are coloured; awards, exercises, tax withholding and gifts are grey and not counted.

TradedInsiderRoleTransactionSharesPriceValueHeld afterFiled
Sep 29, 2026Miller David BrianDirectoropen-market sale10b5-12,000$300.00$600K10,692Oct 1, 2026
Sep 2, 2026Roberts Brian KChief Financial Officertax withholding3,239$254.55$824K21,032Sep 4, 2026
Sep 2, 2026Chen ShirleySenior Vice President of Custotax withholding1,516$254.55$386K14,001Sep 4, 2026
Sep 2, 2026Roberts Brian KChief Financial Officertax withholding3,239$254.55$824K21,032Sep 4, 2026
Aug 21, 2026Lynch Susan DDirectoropen-market sale10b5-11,000$302.30$302K2,684Aug 25, 2026
May 20, 2026Su MayDirectoraward761$0.00—7,984May 22, 2026
May 20, 2026Seams Christopher ADirectoraward761$0.00—38,513May 22, 2026
May 20, 2026Schwartz Stephen SDirectoraward761$0.00—3,536May 22, 2026
May 20, 2026Miller David BrianDirectoraward761$0.00—12,692May 22, 2026
May 20, 2026Lynch Susan DDirectoraward761$0.00—3,684May 22, 2026
May 20, 2026Kelley Stephen DouglasDirectoraward761$0.00—6,384May 22, 2026
May 15, 2026Yaldaei RamilChief Operating Officertax withholding218$271.77$59K18,218May 18, 2026
May 15, 2026Yaldaei RamilChief Operating Officertax withholding625$271.77$170K17,593May 18, 2026
May 15, 2026OH Yoon AhSVP, Gen Counsel & Corp Sectax withholding530$271.77$144K21,110May 18, 2026
Mar 3, 2026Dolev IdoEVP, Prod Solutions Grptax withholding819$207.50$170K26,536Mar 4, 2026
Mar 3, 2026Yaldaei RamilChief Operating Officertax withholding615$207.50$128K18,436Mar 4, 2026
Mar 3, 2026Plisinski Michael PChief Executive Officer, Directortax withholding3,742$207.50$776K179,242Mar 4, 2026
Mar 3, 2026OH Yoon AhSVP, Gen Counsel & Corp Sectax withholding417$207.50$87K21,640Mar 4, 2026
Mar 2, 2026Roberts Brian KChief Financial Officeraward3,096$0.00—24,271Mar 4, 2026
Mar 2, 2026Dolev IdoEVP, Prod Solutions Grpaward3,440$0.00—27,355Mar 4, 2026
Mar 2, 2026Yaldaei RamilChief Operating Officeraward7,683$0.00—19,051Mar 4, 2026
Mar 2, 2026Plisinski Michael PChief Executive Officer, Directoraward14,479$0.00—182,984Mar 4, 2026
Mar 2, 2026OH Yoon AhSVP, Gen Counsel & Corp Secaward2,408$0.00—22,057Mar 4, 2026
Mar 2, 2026Chen ShirleySVP Customer Successaward2,523$0.00—15,517Mar 4, 2026
Mar 1, 2026Yaldaei RamilChief Operating Officertax withholding347$215.89$75K11,644Mar 3, 2026
Mar 1, 2026Yaldaei RamilChief Operating Officertax withholding276$215.89$60K11,368Mar 3, 2026
Mar 1, 2026Yaldaei RamilChief Operating Officeroption exercise649$0.00—11,991Mar 3, 2026
Mar 1, 2026Plisinski Michael PChief Executive Officer, Directortax withholding2,222$215.89$480K170,430Mar 3, 2026
Mar 1, 2026Plisinski Michael PChief Executive Officer, Directoroption exercise4,597$0.00—172,652Mar 3, 2026
Mar 1, 2026Plisinski Michael PChief Executive Officer, Directortax withholding1,925$215.89$416K168,505Mar 3, 2026
Mar 1, 2026OH Yoon AhSVP, Gen Counsel & Corp Secoption exercise724$0.00—20,223Mar 3, 2026
Mar 1, 2026OH Yoon AhSVP, Gen Counsel & Corp Sectax withholding307$215.89$66K19,916Mar 3, 2026
Mar 1, 2026OH Yoon AhSVP, Gen Counsel & Corp Sectax withholding267$215.89$58K19,649Mar 3, 2026
Feb 14, 2026Plisinski Michael PChief Executive Officer, Directortax withholding8,919$217.23$2M171,687Feb 18, 2026
Feb 14, 2026Plisinski Michael PChief Executive Officer, Directortax withholding3,632$217.23$789K168,055Feb 18, 2026
Feb 14, 2026Plisinski Michael PChief Executive Officer, Directoroption exercise18,445$0.00—180,606Feb 18, 2026
Feb 14, 2026OH Yoon AhSVP, Gen Counsel & Corp Sectax withholding1,094$217.23$238K20,000Feb 18, 2026
Feb 14, 2026OH Yoon AhSVP, Gen Counsel & Corp Secoption exercise3,084$0.00—21,094Feb 18, 2026
Feb 14, 2026OH Yoon AhSVP, Gen Counsel & Corp Sectax withholding501$217.23$109K19,499Feb 18, 2026
Dec 24, 2025Plisinski Michael PChief Executive Officer, Directorgift25,000$0.00—162,161Dec 29, 2025
Dec 2, 2025Dolev IdoEVP, Prod Solutions Grptax withholding3,183$154.01$490K23,915Dec 4, 2025
Oct 3, 2025Yaldaei RamilChief Operating Officertax withholding594$143.71$85K11,342Oct 6, 2025
Sep 2, 2025Roberts Brian KChief Financial Officeraward21,175$0.00—21,175Sep 3, 2025
Sep 2, 2025Chen ShirleySVP, Customer Successaward12,994$0.00—12,994Sep 3, 2025
Jun 2, 2025Dolev IdoEVP, Prod Solutions Grpaward21,562$0.00—21,562Jun 4, 2025
Jun 2, 2025Dolev IdoEVP, Prod Solutions Grpaward5,391$0.00—26,953Jun 4, 2025
May 21, 2025Su MayDirectoraward2,114$0.00—7,223May 23, 2025
May 21, 2025Seams Christopher ADirectoraward2,114$0.00—37,752May 23, 2025
May 21, 2025Schwartz Stephen SDirectoraward2,114$0.00—2,775May 23, 2025
May 21, 2025Miller David BrianDirectoraward2,114$0.00—11,931May 23, 2025

Who the insiders are

Everyone who reported a transaction since November 3, 2024, by open-market value over twelve months. Shares held are after the insider’s latest directly held transaction.

InsiderRoleLast transactionKindShares heldBought, 12 monthsSold, 12 monthsSales under a plan
Miller David BrianDirectorSep 29, 2026open-market sale10,692—$600K (1)1 of 1
Lynch Susan DDirectorAug 21, 2026open-market sale2,684—$302K (1)1 of 1
Plisinski Michael PChief Executive Officer, DirectorMar 3, 2026tax withholding179,242———
OH Yoon AhSVP, Gen Counsel & Corp SecMay 15, 2026tax withholding21,110———
Yaldaei RamilChief Operating OfficerMay 15, 2026tax withholding18,218———
Vedula SrinivasSVP, Customer SuccessMar 3, 2025award18,730———
Slicer MarkChief Financial OfficerMay 17, 2025tax withholding13,640———
Dolev IdoEVP, Prod Solutions GrpMar 3, 2026tax withholding26,536———
Roberts Brian KChief Financial OfficerSep 2, 2026tax withholding21,032———
Chen ShirleySenior Vice President of CustoSep 2, 2026tax withholding14,001———
Su MayDirectorMay 20, 2026award7,984———
Seams Christopher ADirectorMay 20, 2026award38,513———
Schwartz Stephen SDirectorMay 20, 2026award3,536———
Kelley Stephen DouglasDirectorMay 20, 2026award6,384———

Questions

Are Onto Innovation Inc. insiders buying or selling?

Over the twelve months to November 3, 2026, 2 insiders at Onto Innovation Inc. sold $902K of stock in the open market, all by officers and directors, and no insider bought. Net, insiders sold $902K. Only open-market purchases and sales are counted.

Who sold the most Onto Innovation Inc. stock in the last year?

Miller David Brian (Director) sold $600K in 1 open-market sale over the twelve months to November 3, 2026.

Do Onto Innovation Inc. executives sell under 10b5-1 plans?

2 of the 2 open-market sales in the last twelve months (100%) were reported as made under a Rule 10b5-1 trading plan, set up in advance. A sale under a plan is still counted as a sale.

What counts as insider buying here?

Only open-market purchases (Form 4 code P) and sales (code S) by officers, directors and 10% owners. Stock awards, option exercises, shares withheld for tax and gifts are listed in the table but never counted as buying or selling.

More on Onto Innovation Inc.

From Form 4, 4/A and 5 filings with the SEC. A record of insider transactions, not a recommendation.