The Filings Report

Teradyne insider trading

TERfinancial statementsForm 4 filings on EDGAR183 transactions since Nov 1, 2024

From August 4, 2026 to November 1, 2026, 0 insiders at Teradyne bought $0 of stock in the open market, and 3 sold $6M. Officers and directors accounted for $0 of purchases and $6M of sales. The last reported transaction was an open-market sale by Matz Marilyn on October 21, 2026.

The answer card and chart use the same period. Change the range above the chart to update both. Form 4 filings through October 22, 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.

TER daily priceSplit-adjusted prices in US dollars

Bought $0Sold $6MAug 4, 2026 – Nov 1, 2026

Oct 30, 2026O $277.54 · H $284.16 · L $266.36 · C $274.37Bought $0 (0)Sold $0 (0)
$255$307$359$411$4632026-08-04: open $388.61, high $409.72, low $382.87, close $403.562026-08-05: open $402.47, high $409.40, low $386.08, close $389.392026-08-06: open $382.01, high $396.59, low $370.00, close $384.892026-08-07: open $397.60, high $397.60, low $372.80, close $379.312026-08-10: open $386.66, high $387.00, low $364.26, close $365.102026-08-11: open $373.79, high $387.81, low $371.20, close $379.562026-08-12: open $396.50, high $408.55, low $393.16, close $402.742026-08-13: open $399.40, high $422.32, low $398.00, close $410.522026-08-14: open $410.51, high $419.00, low $398.42, close $418.792026-08-17: open $425.00, high $444.17, low $420.22, close $443.142026-08-18: open $419.15, high $424.76, low $392.18, close $404.292026-08-19: open $405.19, high $405.19, low $374.01, close $379.652026-08-20: open $377.34, high $385.93, low $372.90, close $383.152026-08-21: open $381.80, high $385.57, low $365.01, close $375.742026-08-24: open $360.12, high $367.82, low $349.01, close $364.902026-08-25: open $374.28, high $378.75, low $360.65, close $366.432026-08-26: open $366.17, high $366.52, low $357.03, close $363.102026-08-27: open $370.20, high $372.68, low $360.44, close $372.062026-08-28: open $368.54, high $370.58, low $353.25, close $354.972026-08-31: open $357.36, high $361.83, low $347.81, close $349.832026-09-01: open $341.30, high $342.31, low $328.10, close $335.462026-09-02: open $334.01, high $347.00, low $330.12, close $341.622026-09-03: open $332.86, high $341.61, low $326.00, close $338.592026-09-04: open $345.89, high $359.00, low $342.29, close $357.032026-09-08: open $365.03, high $377.76, low $364.42, close $372.062026-09-09: open $368.48, high $384.45, low $368.48, close $383.692026-09-10: open $371.61, high $375.00, low $365.82, close $370.192026-09-11: open $380.37, high $385.68, low $374.38, close $379.722026-09-14: open $347.12, high $349.35, low $328.59, close $329.202026-09-15: open $337.83, high $338.48, low $326.37, close $332.852026-09-16: open $340.51, high $347.00, low $336.57, close $341.152026-09-17: open $352.86, high $360.26, low $350.00, close $353.132026-09-18: open $359.24, high $371.71, low $356.97, close $371.472026-09-21: open $378.71, high $384.99, low $370.88, close $381.542026-09-22: open $373.00, high $399.40, low $371.39, close $398.692026-09-23: open $398.00, high $398.68, low $378.31, close $389.142026-09-24: open $383.08, high $388.54, low $376.02, close $387.702026-09-25: open $394.85, high $400.46, low $388.47, close $398.382026-09-28: open $394.70, high $401.97, low $383.50, close $401.302026-09-29: open $410.85, high $415.61, low $399.84, close $403.022026-09-30: open $402.60, high $404.46, low $393.14, close $400.912026-10-01: open $402.90, high $419.21, low $401.24, close $415.792026-10-02: open $430.80, high $451.86, low $427.03, close $449.042026-10-05: open $447.09, high $447.71, low $435.50, close $444.532026-10-06: open $445.07, high $448.00, low $427.04, close $430.322026-10-07: open $415.18, high $416.69, low $404.80, close $411.782026-10-08: open $405.00, high $410.73, low $388.85, close $398.722026-10-09: open $405.19, high $414.26, low $399.31, close $402.682026-10-12: open $394.09, high $394.68, low $381.74, close $383.852026-10-13: open $371.50, high $381.10, low $362.54, close $380.292026-10-14: open $368.04, high $371.71, low $354.74, close $359.442026-10-15: open $341.80, high $344.88, low $331.89, close $343.212026-10-16: open $339.14, high $341.01, low $324.09, close $325.002026-10-19: open $341.50, high $348.38, low $333.00, close $335.532026-10-20: open $328.03, high $342.98, low $322.33, close $336.592026-10-21: open $345.55, high $351.95, low $341.51, close $345.492026-10-22: open $323.66, high $324.45, low $306.84, close $308.752026-10-23: open $306.35, high $317.79, low $304.27, close $308.852026-10-26: open $314.33, high $320.00, low $306.44, close $309.002026-10-27: open $317.72, high $328.83, low $312.28, close $323.682026-10-28: open $302.68, high $317.00, low $295.00, close $313.242026-10-29: open $303.23, high $304.78, low $288.67, close $296.232026-10-30: open $277.54, high $284.16, low $266.36, close $274.37Insider purchases / sales · USD$5M$0−$5M2026-08-17: 0 purchases ($0), 2 sales ($2M)2026-09-01: 0 purchases ($0), 1 sales ($57K)2026-09-15: 0 purchases ($0), 2 sales ($2M)2026-09-17: 0 purchases ($0), 1 sales ($140K)2026-10-01: 0 purchases ($0), 1 sales ($67K)2026-10-15: 0 purchases ($0), 2 sales ($2M)2026-10-21: 0 purchases ($0), 1 sales ($140K)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

183 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 21, 2026Matz MarilynDirectoropen-market sale10b5-1400$350.00$140K12,641Oct 22, 2026
Oct 15, 2026Smith Gregory StephenPresident and CEO, Directoropen-market sale10b5-14,000$341.28$1M104,495Oct 19, 2026
Oct 15, 2026Matz MarilynDirectoropen-market sale10b5-1800$341.28$273K13,041Oct 19, 2026
Oct 1, 2026Johnson MercedesDirectoropen-market sale10b5-1167$402.90$67K6,197Oct 2, 2026
Sep 25, 2026Herweck PeterDirectorother4$0.00—16,282Sep 28, 2026
Sep 25, 2026Tufano Paul JDirectorother19$0.00—66,008Sep 28, 2026
Sep 25, 2026Maddock Ernest EDirectorother2$0.00—10,269Sep 28, 2026
Sep 24, 2026Herweck PeterDirectoraward77$0.00—16,278Sep 28, 2026
Sep 24, 2026Tufano Paul JDirectoraward141$0.00—65,989Sep 28, 2026
Sep 24, 2026Henry Andrew ChisholmDirectoraward64$0.00—2,991Sep 28, 2026
Sep 17, 2026Matz MarilynDirectoropen-market sale10b5-1400$351.11$140K13,841Sep 18, 2026
Sep 15, 2026Smith Gregory StephenPresident and CEO, Directoropen-market sale10b5-14,000$337.83$1M108,495Sep 16, 2026
Sep 15, 2026Matz MarilynDirectoropen-market sale10b5-1800$337.83$270K14,241Sep 16, 2026
Sep 1, 2026Johnson MercedesDirectoropen-market sale10b5-1167$341.30$57K6,364Sep 2, 2026
Aug 17, 2026Smith Gregory StephenPresident and CEO, Directoropen-market sale10b5-14,000$425.00$2M112,495Aug 18, 2026
Aug 17, 2026Matz MarilynDirectoropen-market sale10b5-11,200$425.00$510K15,041Aug 18, 2026
Aug 3, 2026Johnson MercedesDirectoropen-market sale10b5-1166$358.15$59K6,531Aug 4, 2026
Jul 15, 2026Smith Gregory StephenPresident and CEO, Directoropen-market sale10b5-14,000$356.31$1M116,495Jul 16, 2026
Jul 15, 2026Matz MarilynDirectoropen-market sale10b5-11,200$356.31$428K16,241Jul 16, 2026
Jul 1, 2026Johnson MercedesDirectoropen-market sale10b5-1167$460.00$77K6,697Jul 2, 2026
Jun 25, 2026Tufano Paul JDirectoraward116$0.00—65,848Jun 29, 2026
Jun 25, 2026Henry Andrew ChisholmDirectoraward52$0.00—2,927Jun 29, 2026
Jun 25, 2026Herweck PeterDirectoraward63$0.00—16,201Jun 29, 2026
Jun 15, 2026Matz MarilynDirectoropen-market sale10b5-11,200$423.03$508K17,441Jun 16, 2026
Jun 15, 2026Smith Gregory StephenPresident and CEO, Directoropen-market sale10b5-14,000$423.03$2M120,470Jun 16, 2026
Jun 12, 2026Maddock Ernest EDirectorother2$0.00—10,267Jun 16, 2026
Jun 12, 2026Herweck PeterDirectorother4$0.00—16,138Jun 16, 2026
Jun 12, 2026Tufano Paul JDirectorother19$0.00—65,732Jun 16, 2026
Jun 2, 2026Hathout Jean PierrePresident, Teradyne Roboticstax withholding174$392.62$68K9,733Jun 3, 2026
Jun 2, 2026Johnson MercedesDirectoropen-market sale10b5-1167$369.74$62K6,864Jun 3, 2026
Jun 1, 2026Hathout Jean PierrePresident, Teradyne Roboticstax withholding267$369.47$99K9,907Jun 3, 2026
May 22, 2026Poulin Shannon JohnPresident, Semiconductor Testopen-market sale10b5-1656$355.00$233K15,722May 26, 2026
May 21, 2026Poulin Shannon JohnPresident, Semiconductor Testopen-market sale10b5-11,008$345.37$348K15,066May 26, 2026
May 21, 2026Poulin Shannon JohnPresident, Semiconductor Testoption exercise2,843$82.61$235K17,909May 26, 2026
May 21, 2026Poulin Shannon JohnPresident, Semiconductor Testtax withholding1,531$345.98$530K16,378May 26, 2026
May 21, 2026Matz MarilynDirectoropen-market sale10b5-1400$350.00$140K18,641May 26, 2026
May 15, 2026Smith Gregory StephenPresident and CEO, Directoroption exercise4,597$72.10$331K133,067May 19, 2026
May 15, 2026Smith Gregory StephenPresident and CEO, Directoropen-market sale10b5-18,597$338.98$3M124,470May 19, 2026
May 15, 2026Matz MarilynDirectoropen-market sale10b5-1800$338.98$271K19,041May 19, 2026
May 8, 2026Herweck PeterDirectoraward668$0.00—16,134May 12, 2026
May 8, 2026Johnson MercedesDirectoraward668$0.00—7,031May 12, 2026
May 8, 2026Matz MarilynDirectoraward668$0.00—19,841May 12, 2026
May 8, 2026van Kralingen Bridget ADirectoraward668$0.00—6,224May 12, 2026
May 8, 2026Tufano Paul JDirectoraward668$0.00—65,713May 12, 2026
May 8, 2026Sayiner NecipDirectoraward668$0.00—2,800May 12, 2026
May 8, 2026Maddock Ernest EDirectoraward668$0.00—10,265May 12, 2026
May 8, 2026Henry Andrew ChisholmDirectoraward668$0.00—2,875May 12, 2026
May 7, 2026Driscoll RyanVP, General Counsel, Secretaryopen-market sale10b5-1680$377.60$257K7,665May 11, 2026
Apr 8, 2026Mills ReganPresident, Product Testopen-market sale10b5-116$342.17$5K11,399Apr 9, 2026
Apr 6, 2026Johnson MercedesDirectoropen-market sale10b5-1625$312.20$195K6,363Apr 7, 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
Smith Gregory StephenPresident and CEO, DirectorOct 15, 2026open-market sale104,495—$11M (8)8 of 8
Matz MarilynDirectorOct 21, 2026open-market sale12,641—$3M (9)9 of 9
Johnson MercedesDirectorOct 1, 2026open-market sale6,197—$1M (11)11 of 11
Poulin Shannon JohnPresident, Semiconductor TestMay 22, 2026open-market sale15,722—$581K (2)2 of 2
Mills ReganPresident, Product TestApr 8, 2026open-market sale11,399—$341K (3)2 of 3
Driscoll RyanVP, General Counsel, SecretaryMay 7, 2026open-market sale7,665—$257K (1)1 of 1
Herweck PeterDirectorSep 25, 2026other16,282———
Tufano Paul JDirectorSep 25, 2026other66,008———
Maddock Ernest EDirectorSep 25, 2026other10,269———
Mehta SanjayVP and Chief Financial OfficerFeb 4, 2025open-market sale36,576———
Burns Richard JohnPresident, Semiconductor TestFeb 4, 2025open-market sale25,191———
Henry Andrew ChisholmDirectorSep 24, 2026award2,991———
Lukez JohnPresident, LitePoint Corp.Feb 3, 2025tax withholding4,185———
Wood John FrancisPresident, System Test GroupFeb 3, 2025tax withholding14,137———
Hathout Jean PierrePresident, Teradyne RoboticsJun 2, 2026tax withholding9,733———
Kumar UjjwalPresident, Teradyne RoboticsAug 1, 2025tax withholding16,369———
van Kralingen Bridget ADirectorMay 8, 2026award6,224———
Sayiner NecipDirectorMay 8, 2026award2,800———
Turner Michelle L.Chief Financial OfficerNov 3, 2025award11,260———

Questions

Are Teradyne insiders buying or selling?

Over the twelve months to November 1, 2026, 6 insiders at Teradyne sold $16M of stock in the open market, all by officers and directors, and no insider bought. Net, insiders sold $16M. Only open-market purchases and sales are counted.

Who sold the most Teradyne stock in the last year?

Smith Gregory Stephen (President and CEO, Director) sold $11M in 8 open-market sales over the twelve months to November 1, 2026.

Do Teradyne executives sell under 10b5-1 plans?

33 of the 34 open-market sales in the last twelve months (97%) 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 Teradyne

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