The Filings Report

ON Semiconductor Corp insider trading

ONfinancial statementsForm 4 filings on EDGAR115 transactions since Nov 1, 2024

From August 4, 2026 to November 1, 2026, 0 insiders at ON Semiconductor Corp bought $0 of stock in the open market, and 1 sold $1M. Officers and directors accounted for $0 of purchases and $1M of sales. The last reported transaction was an award by Mascarenas Paul Anthony on October 2, 2026.

The answer card and chart use the same period. Change the range above the chart to update both. Form 4 filings through October 2, 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.

ON daily priceSplit-adjusted prices in US dollars

Bought $0Sold $1MAug 4, 2026 – Nov 1, 2026

Oct 30, 2026O $72.67 · H $72.77 · L $69.64 · C $71.67Bought $0 (0)Sold $0 (0)
$65$70$76$82$882026-08-04: open $84.39, high $84.48, low $79.50, close $80.782026-08-05: open $79.01, high $80.79, low $76.54, close $76.912026-08-06: open $75.87, high $80.42, low $75.69, close $78.332026-08-07: open $80.23, high $81.63, low $79.72, close $81.172026-08-10: open $81.50, high $82.51, low $79.72, close $79.782026-08-11: open $81.49, high $82.65, low $80.47, close $81.112026-08-12: open $84.34, high $84.84, low $82.51, close $83.322026-08-13: open $82.88, high $84.50, low $81.30, close $81.562026-08-14: open $81.84, high $83.57, low $81.50, close $82.662026-08-17: open $83.34, high $85.55, low $83.28, close $83.382026-08-18: open $79.99, high $80.90, low $76.96, close $79.422026-08-19: open $80.53, high $81.07, low $76.43, close $76.582026-08-20: open $76.00, high $76.69, low $74.50, close $74.712026-08-21: open $75.27, high $75.67, low $73.52, close $74.212026-08-24: open $73.45, high $73.53, low $70.92, close $71.932026-08-25: open $73.13, high $73.37, low $71.63, close $72.512026-08-26: open $72.56, high $73.83, low $72.39, close $73.222026-08-27: open $74.55, high $74.91, low $73.18, close $74.802026-08-28: open $74.40, high $74.40, low $72.05, close $72.612026-08-31: open $73.55, high $74.98, low $73.35, close $74.092026-09-01: open $72.63, high $73.10, low $71.41, close $72.652026-09-02: open $72.86, high $74.14, low $71.66, close $72.352026-09-03: open $72.19, high $74.31, low $71.36, close $73.652026-09-04: open $75.23, high $75.33, low $73.57, close $74.382026-09-08: open $74.81, high $74.95, low $70.87, close $71.082026-09-09: open $70.83, high $72.45, low $70.54, close $70.982026-09-10: open $69.42, high $70.55, low $68.79, close $70.172026-09-11: open $70.98, high $76.19, low $70.38, close $76.142026-09-14: open $72.38, high $73.14, low $71.46, close $71.652026-09-15: open $73.35, high $74.75, low $71.35, close $73.202026-09-16: open $74.33, high $74.42, low $65.80, close $66.602026-09-17: open $68.13, high $69.80, low $66.05, close $68.302026-09-18: open $70.14, high $70.82, low $68.52, close $69.982026-09-21: open $71.00, high $72.05, low $68.17, close $71.722026-09-22: open $71.75, high $73.83, low $71.18, close $73.602026-09-23: open $73.77, high $74.48, low $72.21, close $74.102026-09-24: open $72.50, high $73.30, low $71.79, close $73.152026-09-25: open $74.27, high $77.68, low $73.66, close $77.202026-09-28: open $77.00, high $77.21, low $74.11, close $75.652026-09-29: open $77.12, high $77.45, low $75.10, close $75.952026-09-30: open $76.50, high $77.20, low $75.37, close $76.872026-10-01: open $76.56, high $80.46, low $76.12, close $80.082026-10-02: open $84.75, high $86.45, low $82.96, close $84.892026-10-05: open $85.10, high $86.33, low $83.90, close $85.932026-10-06: open $86.90, high $86.92, low $85.22, close $86.312026-10-07: open $84.21, high $85.21, low $82.05, close $82.512026-10-08: open $80.47, high $81.60, low $78.54, close $79.412026-10-09: open $81.23, high $81.25, low $75.78, close $77.532026-10-12: open $76.88, high $77.27, low $75.94, close $76.002026-10-13: open $74.85, high $76.75, low $74.27, close $76.692026-10-14: open $74.83, high $76.05, low $71.84, close $73.362026-10-15: open $71.11, high $74.37, low $71.00, close $73.732026-10-16: open $72.71, high $75.07, low $71.74, close $72.022026-10-19: open $72.97, high $74.16, low $71.27, close $73.122026-10-20: open $72.02, high $76.27, low $71.39, close $75.622026-10-21: open $76.40, high $77.69, low $74.95, close $76.942026-10-22: open $75.22, high $75.46, low $72.43, close $73.232026-10-23: open $72.56, high $73.28, low $71.76, close $72.252026-10-26: open $72.50, high $74.93, low $72.22, close $74.062026-10-27: open $75.37, high $79.29, low $74.95, close $78.672026-10-28: open $76.60, high $77.07, low $74.41, close $75.632026-10-29: open $74.68, high $75.96, low $73.80, close $75.242026-10-30: open $72.67, high $72.77, low $69.64, close $71.67Insider purchases / sales · USD$2M$0−$2M2026-10-01: 0 purchases ($0), 1 sales ($1M)Aug 4Aug 26Sep 17Oct 9Oct 30

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 Oct 30, 2026. Insider data through Nov 1, 2026. Prices are adjusted for splits; transaction values are reported dollars.

Every transaction

115 transactions from November 1, 2024 to November 1, 2026, newest first. Open-market purchases and sales are coloured; awards, exercises, tax withholding and gifts are grey and not counted.

TradedInsiderRoleTransactionSharesPriceValueHeld afterFiled
Oct 2, 2026Mascarenas Paul AnthonyDirectoraward126$84.89$11K57,716Oct 2, 2026
Oct 1, 2026Gopalswamy SudhirGroup President, AMG & ISGopen-market sale10b5-115,578$80.00$1M158,177Oct 2, 2026
Jul 2, 2026Mascarenas Paul AnthonyDirectoraward116$91.22$11K57,590Jul 2, 2026
May 26, 2026Gopalswamy SudhirGroup President, AMG & ISGtax withholding470$127.00$60K173,588May 27, 2026
May 14, 2026Deitrich ThomasDirectoraward1,986$0.00—26,060May 18, 2026
May 14, 2026Waters Gregory LDirectoraward1,986$0.00—24,524May 18, 2026
May 14, 2026Carter Susan KDirectoraward1,986$0.00—25,638May 18, 2026
May 14, 2026Yan Christine YDirectoraward1,986$0.00—48,655May 18, 2026
May 14, 2026Kiddoo Bruce EDirectoraward1,986$0.00—19,216May 18, 2026
May 14, 2026Mascarenas Paul AnthonyDirectoraward1,986$0.00—57,474May 18, 2026
Apr 24, 2026Thad TrentExec VP & CFOopen-market sale10b5-130,000$100.00$3M271,194Apr 27, 2026
Apr 23, 2026Thad TrentExec VP & CFOopen-market sale10b5-130,000$93.00$3M301,194Apr 27, 2026
Apr 16, 2026Thad TrentExec VP & CFOopen-market sale10b5-130,000$80.00$2M331,194Apr 17, 2026
Apr 3, 2026Mascarenas Paul AnthonyDirectoraward168$62.19$10K55,488Apr 6, 2026
Mar 13, 2026Gopalswamy SudhirGroup President, AMG & ISGopen-market sale6,114$58.67$359K173,943Mar 16, 2026
Feb 21, 2026El-Khoury HassaneCEO & President, Directortax withholding36,802$69.11$3M1MFeb 24, 2026
Feb 21, 2026Gopalswamy SudhirGroup President, AMG & ISGtax withholding9,583$69.11$662K180,057Feb 24, 2026
Feb 21, 2026Thad TrentExec VP & CFOtax withholding10,383$69.11$718K361,079Feb 24, 2026
Feb 21, 2026Keeton SimonGroup President, PSGtax withholding7,788$69.11$538K214,123Feb 24, 2026
Feb 20, 2026El-Khoury HassaneCEO & President, Directoraward75,315$0.00—1MFeb 24, 2026
Feb 20, 2026Gopalswamy SudhirGroup President, AMG & ISGtax withholding1,455$69.11$101K189,640Feb 24, 2026
Feb 20, 2026Gopalswamy SudhirGroup President, AMG & ISGaward31,834$0.00—191,095Feb 24, 2026
Feb 20, 2026Thad TrentExec VP & CFOtax withholding4,173$69.11$288K371,462Feb 24, 2026
Feb 20, 2026Thad TrentExec VP & CFOaward36,175$0.00—375,635Feb 24, 2026
Feb 20, 2026Keeton SimonGroup President, PSGtax withholding3,130$69.11$216K221,911Feb 24, 2026
Feb 20, 2026Keeton SimonGroup President, PSGaward26,046$0.00—225,041Feb 24, 2026
Feb 17, 2026Keeton SimonGroup President, PSGopen-market sale4,597$71.56$329K243,258Feb 18, 2026
Feb 17, 2026Keeton SimonGroup President, PSGopen-market sale44,263$71.77$3M198,995Feb 18, 2026
Feb 12, 2026Kiddoo Bruce EDirectorgift3,570$0.00—17,230Feb 13, 2026
Feb 12, 2026El-Khoury HassaneCEO & President, Directoropen-market sale19,900$73.02$1M1MFeb 12, 2026
Feb 12, 2026El-Khoury HassaneCEO & President, Directoropen-market sale100$73.56$7K1MFeb 12, 2026
Feb 12, 2026Thad TrentExec VP & CFOopen-market sale10b5-11,300$71.70$93K398,160Feb 12, 2026
Feb 12, 2026Thad TrentExec VP & CFOopen-market sale10b5-12,200$73.39$161K395,960Feb 12, 2026
Feb 12, 2026Thad TrentExec VP & CFOopen-market sale10b5-149,500$70.87$4M339,460Feb 12, 2026
Feb 12, 2026Thad TrentExec VP & CFOopen-market sale10b5-17,000$72.88$510K388,960Feb 12, 2026
Feb 10, 2026Keeton SimonGroup President, PSGtax withholding5,032$67.38$339K247,855Feb 12, 2026
Feb 10, 2026El-Khoury HassaneCEO & President, Directortax withholding20,762$67.38$1M1MFeb 12, 2026
Feb 10, 2026Thad TrentExec VP & CFOtax withholding6,709$67.38$452K399,460Feb 12, 2026
Feb 10, 2026Gopalswamy SudhirGroup President, AMG & ISGtax withholding6,191$67.38$417K159,261Feb 12, 2026
Feb 6, 2026Gopalswamy SudhirGroup President, AMG & ISGtax withholding6,041$65.20$394K165,452Feb 9, 2026
Feb 6, 2026Keeton SimonGroup President, PSGtax withholding9,232$65.20$602K252,887Feb 9, 2026
Feb 6, 2026Thad TrentExec VP & CFOtax withholding12,270$65.20$800K406,169Feb 9, 2026
Feb 6, 2026El-Khoury HassaneCEO & President, Directortax withholding34,460$65.20$2M1MFeb 9, 2026
Feb 5, 2026Gopalswamy SudhirGroup President, AMG & ISGaward23,287$0.00—167,272Feb 9, 2026
Feb 5, 2026Gopalswamy SudhirGroup President, AMG & ISGaward2,581$0.00—169,853Feb 9, 2026
Feb 5, 2026Gopalswamy SudhirGroup President, AMG & ISGaward401$0.00—171,493Feb 9, 2026
Feb 5, 2026Gopalswamy SudhirGroup President, AMG & ISGaward1,239$0.00—171,092Feb 9, 2026
Feb 5, 2026Keeton SimonGroup President, PSGaward23,287$0.00—256,259Feb 9, 2026
Feb 5, 2026Keeton SimonGroup President, PSGaward3,279$0.00—259,538Feb 9, 2026
Feb 5, 2026Keeton SimonGroup President, PSGaward2,581$0.00—262,119Feb 9, 2026

Who the insiders are

Everyone who reported a transaction since November 1, 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
Thad TrentExec VP & CFOApr 24, 2026open-market sale271,194—$14M (8)7 of 8
Keeton SimonGroup President, PSGFeb 21, 2026tax withholding214,123—$5M (3)0 of 3
Gopalswamy SudhirGroup President, AMG & ISGOct 1, 2026open-market sale158,177—$2M (2)1 of 2
El-Khoury HassaneCEO & President, DirectorFeb 21, 2026tax withholding1M—$1M (2)0 of 2
Mascarenas Paul AnthonyDirectorOct 2, 2026award57,716———
Kiddoo Bruce EDirectorMay 14, 2026award19,216———
Campbell AlanDirectorJun 12, 2025open-market sale84,689———
Deitrich ThomasDirectorMay 14, 2026award26,060———
Waters Gregory LDirectorMay 14, 2026award24,524———
Carter Susan KDirectorMay 14, 2026award25,638———
Yan Christine YDirectorMay 14, 2026award48,655———

Questions

Are ON Semiconductor Corp insiders buying or selling?

Over the twelve months to November 1, 2026, 4 insiders at ON Semiconductor Corp sold $21M of stock in the open market, all by officers and directors, and no insider bought. Net, insiders sold $21M. Only open-market purchases and sales are counted.

Who sold the most ON Semiconductor Corp stock in the last year?

Thad Trent (Exec VP & CFO) sold $14M in 8 open-market sales over the twelve months to November 1, 2026.

Do ON Semiconductor Corp executives sell under 10b5-1 plans?

8 of the 15 open-market sales in the last twelve months (53%) 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 ON Semiconductor Corp

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